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Bram Moolenaaredf3f972016-08-29 22:49:24 +02001/* vi:set ts=8 sts=4 sw=4 noet:
Bram Moolenaar071d4272004-06-13 20:20:40 +00002 *
3 * VIM - Vi IMproved by Bram Moolenaar
4 * Multibyte extensions partly by Sung-Hoon Baek
5 *
6 * Do ":help uganda" in Vim to read copying and usage conditions.
7 * Do ":help credits" in Vim to see a list of people who contributed.
8 * See README.txt for an overview of the Vim source code.
9 */
10/*
11 * mbyte.c: Code specifically for handling multi-byte characters.
12 *
13 * The encoding used in the core is set with 'encoding'. When 'encoding' is
14 * changed, the following four variables are set (for speed).
15 * Currently these types of character encodings are supported:
16 *
17 * "enc_dbcs" When non-zero it tells the type of double byte character
18 * encoding (Chinese, Korean, Japanese, etc.).
19 * The cell width on the display is equal to the number of
20 * bytes. (exception: DBCS_JPNU with first byte 0x8e)
21 * Recognizing the first or second byte is difficult, it
22 * requires checking a byte sequence from the start.
23 * "enc_utf8" When TRUE use Unicode characters in UTF-8 encoding.
24 * The cell width on the display needs to be determined from
25 * the character value.
26 * Recognizing bytes is easy: 0xxx.xxxx is a single-byte
27 * char, 10xx.xxxx is a trailing byte, 11xx.xxxx is a leading
28 * byte of a multi-byte character.
Bram Moolenaar3e8cb582010-01-12 19:52:03 +010029 * To make things complicated, up to six composing characters
Bram Moolenaar071d4272004-06-13 20:20:40 +000030 * are allowed. These are drawn on top of the first char.
31 * For most editing the sequence of bytes with composing
32 * characters included is considered to be one character.
33 * "enc_unicode" When 2 use 16-bit Unicode characters (or UTF-16).
34 * When 4 use 32-but Unicode characters.
35 * Internally characters are stored in UTF-8 encoding to
36 * avoid NUL bytes. Conversion happens when doing I/O.
37 * "enc_utf8" will also be TRUE.
38 *
39 * "has_mbyte" is set when "enc_dbcs" or "enc_utf8" is non-zero.
40 *
41 * If none of these is TRUE, 8-bit bytes are used for a character. The
42 * encoding isn't currently specified (TODO).
43 *
44 * 'encoding' specifies the encoding used in the core. This is in registers,
45 * text manipulation, buffers, etc. Conversion has to be done when characters
46 * in another encoding are received or send:
47 *
48 * clipboard
49 * ^
50 * | (2)
51 * V
52 * +---------------+
53 * (1) | | (3)
54 * keyboard ----->| core |-----> display
55 * | |
56 * +---------------+
57 * ^
58 * | (4)
59 * V
60 * file
61 *
62 * (1) Typed characters arrive in the current locale. Conversion is to be
63 * done when 'encoding' is different from 'termencoding'.
64 * (2) Text will be made available with the encoding specified with
65 * 'encoding'. If this is not sufficient, system-specific conversion
66 * might be required.
67 * (3) For the GUI the correct font must be selected, no conversion done.
68 * Otherwise, conversion is to be done when 'encoding' differs from
69 * 'termencoding'. (Different in the GTK+ 2 port -- 'termencoding'
70 * is always used for both input and output and must always be set to
71 * "utf-8". gui_mch_init() does this automatically.)
72 * (4) The encoding of the file is specified with 'fileencoding'. Conversion
73 * is to be done when it's different from 'encoding'.
74 *
75 * The viminfo file is a special case: Only text is converted, not file names.
76 * Vim scripts may contain an ":encoding" command. This has an effect for
77 * some commands, like ":menutrans"
78 */
79
80#include "vim.h"
81
82#ifdef WIN32UNIX
83# ifndef WIN32_LEAN_AND_MEAN
84# define WIN32_LEAN_AND_MEAN
85# endif
Bram Moolenaarca058dc2014-01-14 13:26:21 +010086# if defined(FEAT_GUI) || defined(FEAT_XCLIPBOARD)
87# include <X11/Xwindows.h>
88# define WINBYTE wBYTE
89# else
90# include <windows.h>
91# define WINBYTE BYTE
92# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +000093# ifdef WIN32
94# undef WIN32 /* Some windows.h define WIN32, we don't want that here. */
95# endif
Bram Moolenaarca058dc2014-01-14 13:26:21 +010096#else
97# define WINBYTE BYTE
Bram Moolenaar071d4272004-06-13 20:20:40 +000098#endif
99
100#if (defined(WIN3264) || defined(WIN32UNIX)) && !defined(__MINGW32__)
101# include <winnls.h>
102#endif
103
104#ifdef FEAT_GUI_X11
105# include <X11/Intrinsic.h>
106#endif
107#ifdef X_LOCALE
108#include <X11/Xlocale.h>
109#endif
110
Bram Moolenaar182c5be2010-06-25 05:37:59 +0200111#if defined(FEAT_GUI_GTK) && defined(FEAT_XIM)
Bram Moolenaar98921892016-02-23 17:14:37 +0100112# if GTK_CHECK_VERSION(3,0,0)
113# include <gdk/gdkkeysyms-compat.h>
114# else
115# include <gdk/gdkkeysyms.h>
116# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +0000117# ifdef WIN3264
118# include <gdk/gdkwin32.h>
119# else
120# include <gdk/gdkx.h>
121# endif
122#endif
123
124#ifdef HAVE_WCHAR_H
125# include <wchar.h>
126#endif
127
128#if 0
129/* This has been disabled, because several people reported problems with the
130 * wcwidth() and iswprint() library functions, esp. for Hebrew. */
131# ifdef __STDC_ISO_10646__
132# define USE_WCHAR_FUNCTIONS
133# endif
134#endif
135
136#if defined(FEAT_MBYTE) || defined(PROTO)
137
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +0100138static int enc_canon_search(char_u *name);
139static int dbcs_char2len(int c);
140static int dbcs_char2bytes(int c, char_u *buf);
141static int dbcs_ptr2len(char_u *p);
142static int dbcs_ptr2len_len(char_u *p, int size);
143static int utf_ptr2cells_len(char_u *p, int size);
144static int dbcs_char2cells(int c);
145static int dbcs_ptr2cells_len(char_u *p, int size);
146static int dbcs_ptr2char(char_u *p);
147static int utf_safe_read_char_adv(char_u **s, size_t *n);
Bram Moolenaar071d4272004-06-13 20:20:40 +0000148
Bram Moolenaar24397332009-12-02 14:02:39 +0000149/*
150 * Lookup table to quickly get the length in bytes of a UTF-8 character from
151 * the first byte of a UTF-8 string.
152 * Bytes which are illegal when used as the first byte have a 1.
153 * The NUL byte has length 1.
154 */
Bram Moolenaar071d4272004-06-13 20:20:40 +0000155static char utf8len_tab[256] =
156{
157 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
158 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
159 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
160 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
Bram Moolenaar24397332009-12-02 14:02:39 +0000161 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
162 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
Bram Moolenaar071d4272004-06-13 20:20:40 +0000163 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
164 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1,
165};
166
167/*
Bram Moolenaar24397332009-12-02 14:02:39 +0000168 * Like utf8len_tab above, but using a zero for illegal lead bytes.
169 */
170static char utf8len_tab_zero[256] =
171{
172 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
173 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
174 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
175 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
176 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
177 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
178 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
179 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,0,0,
180};
181
182/*
Bram Moolenaar071d4272004-06-13 20:20:40 +0000183 * XIM often causes trouble. Define XIM_DEBUG to get a log of XIM callbacks
184 * in the "xim.log" file.
185 */
186/* #define XIM_DEBUG */
187#ifdef XIM_DEBUG
188 static void
189xim_log(char *s, ...)
190{
191 va_list arglist;
192 static FILE *fd = NULL;
193
194 if (fd == (FILE *)-1)
195 return;
196 if (fd == NULL)
197 {
Bram Moolenaarbfd8fc02005-09-20 23:22:24 +0000198 fd = mch_fopen("xim.log", "w");
Bram Moolenaar071d4272004-06-13 20:20:40 +0000199 if (fd == NULL)
200 {
201 EMSG("Cannot open xim.log");
202 fd = (FILE *)-1;
203 return;
204 }
205 }
206
207 va_start(arglist, s);
208 vfprintf(fd, s, arglist);
209 va_end(arglist);
210}
211#endif
212
213#endif
214
215#if defined(FEAT_MBYTE) || defined(FEAT_POSTSCRIPT) || defined(PROTO)
216/*
217 * Canonical encoding names and their properties.
218 * "iso-8859-n" is handled by enc_canonize() directly.
219 */
220static struct
221{ char *name; int prop; int codepage;}
222enc_canon_table[] =
223{
224#define IDX_LATIN_1 0
225 {"latin1", ENC_8BIT + ENC_LATIN1, 1252},
226#define IDX_ISO_2 1
227 {"iso-8859-2", ENC_8BIT, 0},
228#define IDX_ISO_3 2
229 {"iso-8859-3", ENC_8BIT, 0},
230#define IDX_ISO_4 3
231 {"iso-8859-4", ENC_8BIT, 0},
232#define IDX_ISO_5 4
233 {"iso-8859-5", ENC_8BIT, 0},
234#define IDX_ISO_6 5
235 {"iso-8859-6", ENC_8BIT, 0},
236#define IDX_ISO_7 6
237 {"iso-8859-7", ENC_8BIT, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000238#define IDX_ISO_8 7
Bram Moolenaar071d4272004-06-13 20:20:40 +0000239 {"iso-8859-8", ENC_8BIT, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000240#define IDX_ISO_9 8
Bram Moolenaar071d4272004-06-13 20:20:40 +0000241 {"iso-8859-9", ENC_8BIT, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000242#define IDX_ISO_10 9
Bram Moolenaar071d4272004-06-13 20:20:40 +0000243 {"iso-8859-10", ENC_8BIT, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000244#define IDX_ISO_11 10
Bram Moolenaar071d4272004-06-13 20:20:40 +0000245 {"iso-8859-11", ENC_8BIT, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000246#define IDX_ISO_13 11
Bram Moolenaar071d4272004-06-13 20:20:40 +0000247 {"iso-8859-13", ENC_8BIT, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000248#define IDX_ISO_14 12
Bram Moolenaar071d4272004-06-13 20:20:40 +0000249 {"iso-8859-14", ENC_8BIT, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000250#define IDX_ISO_15 13
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +0000251 {"iso-8859-15", ENC_8BIT + ENC_LATIN9, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000252#define IDX_KOI8_R 14
Bram Moolenaar071d4272004-06-13 20:20:40 +0000253 {"koi8-r", ENC_8BIT, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000254#define IDX_KOI8_U 15
Bram Moolenaar071d4272004-06-13 20:20:40 +0000255 {"koi8-u", ENC_8BIT, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000256#define IDX_UTF8 16
Bram Moolenaar071d4272004-06-13 20:20:40 +0000257 {"utf-8", ENC_UNICODE, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000258#define IDX_UCS2 17
Bram Moolenaar071d4272004-06-13 20:20:40 +0000259 {"ucs-2", ENC_UNICODE + ENC_ENDIAN_B + ENC_2BYTE, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000260#define IDX_UCS2LE 18
Bram Moolenaar071d4272004-06-13 20:20:40 +0000261 {"ucs-2le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2BYTE, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000262#define IDX_UTF16 19
Bram Moolenaar071d4272004-06-13 20:20:40 +0000263 {"utf-16", ENC_UNICODE + ENC_ENDIAN_B + ENC_2WORD, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000264#define IDX_UTF16LE 20
Bram Moolenaar071d4272004-06-13 20:20:40 +0000265 {"utf-16le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2WORD, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000266#define IDX_UCS4 21
Bram Moolenaar071d4272004-06-13 20:20:40 +0000267 {"ucs-4", ENC_UNICODE + ENC_ENDIAN_B + ENC_4BYTE, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000268#define IDX_UCS4LE 22
Bram Moolenaar071d4272004-06-13 20:20:40 +0000269 {"ucs-4le", ENC_UNICODE + ENC_ENDIAN_L + ENC_4BYTE, 0},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000270
271 /* For debugging DBCS encoding on Unix. */
272#define IDX_DEBUG 23
Bram Moolenaar071d4272004-06-13 20:20:40 +0000273 {"debug", ENC_DBCS, DBCS_DEBUG},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000274#define IDX_EUC_JP 24
Bram Moolenaar071d4272004-06-13 20:20:40 +0000275 {"euc-jp", ENC_DBCS, DBCS_JPNU},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000276#define IDX_SJIS 25
Bram Moolenaar071d4272004-06-13 20:20:40 +0000277 {"sjis", ENC_DBCS, DBCS_JPN},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000278#define IDX_EUC_KR 26
Bram Moolenaar071d4272004-06-13 20:20:40 +0000279 {"euc-kr", ENC_DBCS, DBCS_KORU},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000280#define IDX_EUC_CN 27
Bram Moolenaar071d4272004-06-13 20:20:40 +0000281 {"euc-cn", ENC_DBCS, DBCS_CHSU},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000282#define IDX_EUC_TW 28
Bram Moolenaar071d4272004-06-13 20:20:40 +0000283 {"euc-tw", ENC_DBCS, DBCS_CHTU},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000284#define IDX_BIG5 29
Bram Moolenaar071d4272004-06-13 20:20:40 +0000285 {"big5", ENC_DBCS, DBCS_CHT},
Bram Moolenaar35fdbb52005-07-09 21:08:57 +0000286
287 /* MS-DOS and MS-Windows codepages are included here, so that they can be
288 * used on Unix too. Most of them are similar to ISO-8859 encodings, but
289 * not exactly the same. */
290#define IDX_CP437 30
291 {"cp437", ENC_8BIT, 437}, /* like iso-8859-1 */
292#define IDX_CP737 31
293 {"cp737", ENC_8BIT, 737}, /* like iso-8859-7 */
294#define IDX_CP775 32
295 {"cp775", ENC_8BIT, 775}, /* Baltic */
296#define IDX_CP850 33
297 {"cp850", ENC_8BIT, 850}, /* like iso-8859-4 */
298#define IDX_CP852 34
299 {"cp852", ENC_8BIT, 852}, /* like iso-8859-1 */
300#define IDX_CP855 35
301 {"cp855", ENC_8BIT, 855}, /* like iso-8859-2 */
302#define IDX_CP857 36
303 {"cp857", ENC_8BIT, 857}, /* like iso-8859-5 */
304#define IDX_CP860 37
305 {"cp860", ENC_8BIT, 860}, /* like iso-8859-9 */
306#define IDX_CP861 38
307 {"cp861", ENC_8BIT, 861}, /* like iso-8859-1 */
308#define IDX_CP862 39
309 {"cp862", ENC_8BIT, 862}, /* like iso-8859-1 */
310#define IDX_CP863 40
311 {"cp863", ENC_8BIT, 863}, /* like iso-8859-8 */
312#define IDX_CP865 41
313 {"cp865", ENC_8BIT, 865}, /* like iso-8859-1 */
314#define IDX_CP866 42
315 {"cp866", ENC_8BIT, 866}, /* like iso-8859-5 */
316#define IDX_CP869 43
317 {"cp869", ENC_8BIT, 869}, /* like iso-8859-7 */
318#define IDX_CP874 44
319 {"cp874", ENC_8BIT, 874}, /* Thai */
320#define IDX_CP932 45
321 {"cp932", ENC_DBCS, DBCS_JPN},
322#define IDX_CP936 46
323 {"cp936", ENC_DBCS, DBCS_CHS},
324#define IDX_CP949 47
325 {"cp949", ENC_DBCS, DBCS_KOR},
326#define IDX_CP950 48
327 {"cp950", ENC_DBCS, DBCS_CHT},
328#define IDX_CP1250 49
329 {"cp1250", ENC_8BIT, 1250}, /* Czech, Polish, etc. */
330#define IDX_CP1251 50
331 {"cp1251", ENC_8BIT, 1251}, /* Cyrillic */
332 /* cp1252 is considered to be equal to latin1 */
333#define IDX_CP1253 51
334 {"cp1253", ENC_8BIT, 1253}, /* Greek */
335#define IDX_CP1254 52
336 {"cp1254", ENC_8BIT, 1254}, /* Turkish */
337#define IDX_CP1255 53
338 {"cp1255", ENC_8BIT, 1255}, /* Hebrew */
339#define IDX_CP1256 54
340 {"cp1256", ENC_8BIT, 1256}, /* Arabic */
341#define IDX_CP1257 55
342 {"cp1257", ENC_8BIT, 1257}, /* Baltic */
343#define IDX_CP1258 56
344 {"cp1258", ENC_8BIT, 1258}, /* Vietnamese */
345
346#define IDX_MACROMAN 57
347 {"macroman", ENC_8BIT + ENC_MACROMAN, 0}, /* Mac OS */
Bram Moolenaarae177eb2006-05-13 15:06:23 +0000348#define IDX_DECMCS 58
349 {"dec-mcs", ENC_8BIT, 0}, /* DEC MCS */
350#define IDX_HPROMAN8 59
351 {"hp-roman8", ENC_8BIT, 0}, /* HP Roman8 */
352#define IDX_COUNT 60
Bram Moolenaar071d4272004-06-13 20:20:40 +0000353};
354
355/*
356 * Aliases for encoding names.
357 */
358static struct
359{ char *name; int canon;}
360enc_alias_table[] =
361{
362 {"ansi", IDX_LATIN_1},
363 {"iso-8859-1", IDX_LATIN_1},
364 {"latin2", IDX_ISO_2},
365 {"latin3", IDX_ISO_3},
366 {"latin4", IDX_ISO_4},
367 {"cyrillic", IDX_ISO_5},
368 {"arabic", IDX_ISO_6},
369 {"greek", IDX_ISO_7},
370#ifdef WIN3264
371 {"hebrew", IDX_CP1255},
372#else
373 {"hebrew", IDX_ISO_8},
374#endif
375 {"latin5", IDX_ISO_9},
376 {"turkish", IDX_ISO_9}, /* ? */
377 {"latin6", IDX_ISO_10},
378 {"nordic", IDX_ISO_10}, /* ? */
379 {"thai", IDX_ISO_11}, /* ? */
380 {"latin7", IDX_ISO_13},
381 {"latin8", IDX_ISO_14},
382 {"latin9", IDX_ISO_15},
383 {"utf8", IDX_UTF8},
384 {"unicode", IDX_UCS2},
385 {"ucs2", IDX_UCS2},
386 {"ucs2be", IDX_UCS2},
387 {"ucs-2be", IDX_UCS2},
388 {"ucs2le", IDX_UCS2LE},
389 {"utf16", IDX_UTF16},
390 {"utf16be", IDX_UTF16},
391 {"utf-16be", IDX_UTF16},
392 {"utf16le", IDX_UTF16LE},
393 {"ucs4", IDX_UCS4},
394 {"ucs4be", IDX_UCS4},
395 {"ucs-4be", IDX_UCS4},
396 {"ucs4le", IDX_UCS4LE},
Bram Moolenaar5360af92008-02-20 10:29:39 +0000397 {"utf32", IDX_UCS4},
398 {"utf-32", IDX_UCS4},
399 {"utf32be", IDX_UCS4},
400 {"utf-32be", IDX_UCS4},
401 {"utf32le", IDX_UCS4LE},
402 {"utf-32le", IDX_UCS4LE},
Bram Moolenaar071d4272004-06-13 20:20:40 +0000403 {"932", IDX_CP932},
404 {"949", IDX_CP949},
405 {"936", IDX_CP936},
Bram Moolenaar0928caa2006-08-16 16:03:34 +0000406 {"gbk", IDX_CP936},
Bram Moolenaar071d4272004-06-13 20:20:40 +0000407 {"950", IDX_CP950},
408 {"eucjp", IDX_EUC_JP},
409 {"unix-jis", IDX_EUC_JP},
410 {"ujis", IDX_EUC_JP},
411 {"shift-jis", IDX_SJIS},
Bram Moolenaar57bc4632014-11-19 17:05:55 +0100412 {"pck", IDX_SJIS}, /* Sun: PCK */
Bram Moolenaar071d4272004-06-13 20:20:40 +0000413 {"euckr", IDX_EUC_KR},
414 {"5601", IDX_EUC_KR}, /* Sun: KS C 5601 */
415 {"euccn", IDX_EUC_CN},
416 {"gb2312", IDX_EUC_CN},
417 {"euctw", IDX_EUC_TW},
418#if defined(WIN3264) || defined(WIN32UNIX) || defined(MACOS)
419 {"japan", IDX_CP932},
420 {"korea", IDX_CP949},
421 {"prc", IDX_CP936},
422 {"chinese", IDX_CP936},
423 {"taiwan", IDX_CP950},
424 {"big5", IDX_CP950},
425#else
426 {"japan", IDX_EUC_JP},
427 {"korea", IDX_EUC_KR},
428 {"prc", IDX_EUC_CN},
429 {"chinese", IDX_EUC_CN},
430 {"taiwan", IDX_EUC_TW},
431 {"cp950", IDX_BIG5},
432 {"950", IDX_BIG5},
433#endif
434 {"mac", IDX_MACROMAN},
Bram Moolenaarae177eb2006-05-13 15:06:23 +0000435 {"mac-roman", IDX_MACROMAN},
Bram Moolenaar071d4272004-06-13 20:20:40 +0000436 {NULL, 0}
437};
438
439#ifndef CP_UTF8
440# define CP_UTF8 65001 /* magic number from winnls.h */
441#endif
442
443/*
444 * Find encoding "name" in the list of canonical encoding names.
445 * Returns -1 if not found.
446 */
447 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +0100448enc_canon_search(char_u *name)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000449{
450 int i;
451
452 for (i = 0; i < IDX_COUNT; ++i)
453 if (STRCMP(name, enc_canon_table[i].name) == 0)
454 return i;
455 return -1;
456}
457
458#endif
459
460#if defined(FEAT_MBYTE) || defined(PROTO)
461
462/*
463 * Find canonical encoding "name" in the list and return its properties.
464 * Returns 0 if not found.
465 */
466 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +0100467enc_canon_props(char_u *name)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000468{
469 int i;
470
471 i = enc_canon_search(name);
472 if (i >= 0)
473 return enc_canon_table[i].prop;
474#ifdef WIN3264
475 if (name[0] == 'c' && name[1] == 'p' && VIM_ISDIGIT(name[2]))
476 {
477 CPINFO cpinfo;
478
479 /* Get info on this codepage to find out what it is. */
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +0100480 if (GetCPInfo(atoi((char *)name + 2), &cpinfo) != 0)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000481 {
482 if (cpinfo.MaxCharSize == 1) /* some single-byte encoding */
483 return ENC_8BIT;
484 if (cpinfo.MaxCharSize == 2
485 && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0))
486 /* must be a DBCS encoding */
487 return ENC_DBCS;
488 }
489 return 0;
490 }
491#endif
492 if (STRNCMP(name, "2byte-", 6) == 0)
493 return ENC_DBCS;
494 if (STRNCMP(name, "8bit-", 5) == 0 || STRNCMP(name, "iso-8859-", 9) == 0)
495 return ENC_8BIT;
496 return 0;
497}
498
499/*
500 * Set up for using multi-byte characters.
501 * Called in three cases:
502 * - by main() to initialize (p_enc == NULL)
503 * - by set_init_1() after 'encoding' was set to its default.
504 * - by do_set() when 'encoding' has been set.
505 * p_enc must have been passed through enc_canonize() already.
506 * Sets the "enc_unicode", "enc_utf8", "enc_dbcs" and "has_mbyte" flags.
507 * Fills mb_bytelen_tab[] and returns NULL when there are no problems.
508 * When there is something wrong: Returns an error message and doesn't change
509 * anything.
510 */
511 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +0100512mb_init(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000513{
514 int i;
515 int idx;
516 int n;
517 int enc_dbcs_new = 0;
518#if defined(USE_ICONV) && !defined(WIN3264) && !defined(WIN32UNIX) \
519 && !defined(MACOS)
520# define LEN_FROM_CONV
521 vimconv_T vimconv;
522 char_u *p;
523#endif
524
525 if (p_enc == NULL)
526 {
527 /* Just starting up: set the whole table to one's. */
528 for (i = 0; i < 256; ++i)
529 mb_bytelen_tab[i] = 1;
530 input_conv.vc_type = CONV_NONE;
531 input_conv.vc_factor = 1;
532 output_conv.vc_type = CONV_NONE;
533 return NULL;
534 }
535
536#ifdef WIN3264
537 if (p_enc[0] == 'c' && p_enc[1] == 'p' && VIM_ISDIGIT(p_enc[2]))
538 {
539 CPINFO cpinfo;
540
541 /* Get info on this codepage to find out what it is. */
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +0100542 if (GetCPInfo(atoi((char *)p_enc + 2), &cpinfo) != 0)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000543 {
544 if (cpinfo.MaxCharSize == 1)
545 {
546 /* some single-byte encoding */
547 enc_unicode = 0;
548 enc_utf8 = FALSE;
549 }
550 else if (cpinfo.MaxCharSize == 2
551 && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0))
552 {
553 /* must be a DBCS encoding, check below */
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +0100554 enc_dbcs_new = atoi((char *)p_enc + 2);
Bram Moolenaar071d4272004-06-13 20:20:40 +0000555 }
556 else
557 goto codepage_invalid;
558 }
559 else if (GetLastError() == ERROR_INVALID_PARAMETER)
560 {
561codepage_invalid:
562 return (char_u *)N_("E543: Not a valid codepage");
563 }
564 }
565#endif
566 else if (STRNCMP(p_enc, "8bit-", 5) == 0
567 || STRNCMP(p_enc, "iso-8859-", 9) == 0)
568 {
569 /* Accept any "8bit-" or "iso-8859-" name. */
570 enc_unicode = 0;
571 enc_utf8 = FALSE;
572 }
573 else if (STRNCMP(p_enc, "2byte-", 6) == 0)
574 {
575#ifdef WIN3264
576 /* Windows: accept only valid codepage numbers, check below. */
577 if (p_enc[6] != 'c' || p_enc[7] != 'p'
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +0100578 || (enc_dbcs_new = atoi((char *)p_enc + 8)) == 0)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000579 return e_invarg;
580#else
581 /* Unix: accept any "2byte-" name, assume current locale. */
582 enc_dbcs_new = DBCS_2BYTE;
583#endif
584 }
585 else if ((idx = enc_canon_search(p_enc)) >= 0)
586 {
587 i = enc_canon_table[idx].prop;
588 if (i & ENC_UNICODE)
589 {
590 /* Unicode */
591 enc_utf8 = TRUE;
592 if (i & (ENC_2BYTE | ENC_2WORD))
593 enc_unicode = 2;
594 else if (i & ENC_4BYTE)
595 enc_unicode = 4;
596 else
597 enc_unicode = 0;
598 }
599 else if (i & ENC_DBCS)
600 {
601 /* 2byte, handle below */
602 enc_dbcs_new = enc_canon_table[idx].codepage;
603 }
604 else
605 {
606 /* Must be 8-bit. */
607 enc_unicode = 0;
608 enc_utf8 = FALSE;
609 }
610 }
611 else /* Don't know what encoding this is, reject it. */
612 return e_invarg;
613
614 if (enc_dbcs_new != 0)
615 {
616#ifdef WIN3264
617 /* Check if the DBCS code page is OK. */
618 if (!IsValidCodePage(enc_dbcs_new))
619 goto codepage_invalid;
620#endif
621 enc_unicode = 0;
622 enc_utf8 = FALSE;
623 }
624 enc_dbcs = enc_dbcs_new;
625 has_mbyte = (enc_dbcs != 0 || enc_utf8);
626
Bram Moolenaar693e40c2013-02-26 14:56:42 +0100627#if defined(WIN3264) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000628 enc_codepage = encname2codepage(p_enc);
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +0000629 enc_latin9 = (STRCMP(p_enc, "iso-8859-15") == 0);
Bram Moolenaar071d4272004-06-13 20:20:40 +0000630#endif
631
Bram Moolenaar78622822005-08-23 21:00:13 +0000632 /* Detect an encoding that uses latin1 characters. */
633 enc_latin1like = (enc_utf8 || STRCMP(p_enc, "latin1") == 0
634 || STRCMP(p_enc, "iso-8859-15") == 0);
635
Bram Moolenaar071d4272004-06-13 20:20:40 +0000636 /*
637 * Set the function pointers.
638 */
639 if (enc_utf8)
640 {
Bram Moolenaar0fa313a2005-08-10 21:07:57 +0000641 mb_ptr2len = utfc_ptr2len;
Bram Moolenaarfeba08b2009-06-16 13:12:07 +0000642 mb_ptr2len_len = utfc_ptr2len_len;
Bram Moolenaar071d4272004-06-13 20:20:40 +0000643 mb_char2len = utf_char2len;
644 mb_char2bytes = utf_char2bytes;
645 mb_ptr2cells = utf_ptr2cells;
Bram Moolenaarfeba08b2009-06-16 13:12:07 +0000646 mb_ptr2cells_len = utf_ptr2cells_len;
Bram Moolenaar071d4272004-06-13 20:20:40 +0000647 mb_char2cells = utf_char2cells;
648 mb_off2cells = utf_off2cells;
649 mb_ptr2char = utf_ptr2char;
650 mb_head_off = utf_head_off;
651 }
652 else if (enc_dbcs != 0)
653 {
Bram Moolenaar0fa313a2005-08-10 21:07:57 +0000654 mb_ptr2len = dbcs_ptr2len;
Bram Moolenaarfeba08b2009-06-16 13:12:07 +0000655 mb_ptr2len_len = dbcs_ptr2len_len;
Bram Moolenaar071d4272004-06-13 20:20:40 +0000656 mb_char2len = dbcs_char2len;
657 mb_char2bytes = dbcs_char2bytes;
658 mb_ptr2cells = dbcs_ptr2cells;
Bram Moolenaarfeba08b2009-06-16 13:12:07 +0000659 mb_ptr2cells_len = dbcs_ptr2cells_len;
Bram Moolenaar071d4272004-06-13 20:20:40 +0000660 mb_char2cells = dbcs_char2cells;
661 mb_off2cells = dbcs_off2cells;
662 mb_ptr2char = dbcs_ptr2char;
663 mb_head_off = dbcs_head_off;
664 }
665 else
666 {
Bram Moolenaar0fa313a2005-08-10 21:07:57 +0000667 mb_ptr2len = latin_ptr2len;
Bram Moolenaarfeba08b2009-06-16 13:12:07 +0000668 mb_ptr2len_len = latin_ptr2len_len;
Bram Moolenaar071d4272004-06-13 20:20:40 +0000669 mb_char2len = latin_char2len;
670 mb_char2bytes = latin_char2bytes;
671 mb_ptr2cells = latin_ptr2cells;
Bram Moolenaarfeba08b2009-06-16 13:12:07 +0000672 mb_ptr2cells_len = latin_ptr2cells_len;
Bram Moolenaar071d4272004-06-13 20:20:40 +0000673 mb_char2cells = latin_char2cells;
674 mb_off2cells = latin_off2cells;
675 mb_ptr2char = latin_ptr2char;
676 mb_head_off = latin_head_off;
677 }
678
679 /*
680 * Fill the mb_bytelen_tab[] for MB_BYTE2LEN().
681 */
682#ifdef LEN_FROM_CONV
683 /* When 'encoding' is different from the current locale mblen() won't
684 * work. Use conversion to "utf-8" instead. */
685 vimconv.vc_type = CONV_NONE;
686 if (enc_dbcs)
687 {
688 p = enc_locale();
689 if (p == NULL || STRCMP(p, p_enc) != 0)
690 {
691 convert_setup(&vimconv, p_enc, (char_u *)"utf-8");
692 vimconv.vc_fail = TRUE;
693 }
694 vim_free(p);
695 }
696#endif
697
698 for (i = 0; i < 256; ++i)
699 {
700 /* Our own function to reliably check the length of UTF-8 characters,
701 * independent of mblen(). */
702 if (enc_utf8)
703 n = utf8len_tab[i];
704 else if (enc_dbcs == 0)
705 n = 1;
706 else
707 {
708#if defined(WIN3264) || defined(WIN32UNIX)
709 /* enc_dbcs is set by setting 'fileencoding'. It becomes a Windows
710 * CodePage identifier, which we can pass directly in to Windows
711 * API */
Bram Moolenaarca058dc2014-01-14 13:26:21 +0100712 n = IsDBCSLeadByteEx(enc_dbcs, (WINBYTE)i) ? 2 : 1;
Bram Moolenaar071d4272004-06-13 20:20:40 +0000713#else
Bram Moolenaar4064e242014-03-12 14:54:34 +0100714# if defined(MACOS) || defined(__amigaos4__) || defined(__ANDROID__)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000715 /*
716 * if mblen() is not available, character which MSB is turned on
717 * are treated as leading byte character. (note : This assumption
718 * is not always true.)
719 */
720 n = (i & 0x80) ? 2 : 1;
721# else
Bram Moolenaar9a920d82012-06-01 15:21:02 +0200722 char buf[MB_MAXBYTES + 1];
Bram Moolenaar071d4272004-06-13 20:20:40 +0000723# ifdef X_LOCALE
724# ifndef mblen
725# define mblen _Xmblen
726# endif
727# endif
728 if (i == NUL) /* just in case mblen() can't handle "" */
729 n = 1;
730 else
731 {
732 buf[0] = i;
733 buf[1] = 0;
734#ifdef LEN_FROM_CONV
735 if (vimconv.vc_type != CONV_NONE)
736 {
737 /*
738 * string_convert() should fail when converting the first
739 * byte of a double-byte character.
740 */
741 p = string_convert(&vimconv, (char_u *)buf, NULL);
742 if (p != NULL)
743 {
744 vim_free(p);
745 n = 1;
746 }
747 else
748 n = 2;
749 }
750 else
751#endif
752 {
753 /*
754 * mblen() should return -1 for invalid (means the leading
755 * multibyte) character. However there are some platforms
756 * where mblen() returns 0 for invalid character.
757 * Therefore, following condition includes 0.
758 */
Bram Moolenaarfe86f2d2008-11-28 20:29:07 +0000759 ignored = mblen(NULL, 0); /* First reset the state. */
Bram Moolenaar071d4272004-06-13 20:20:40 +0000760 if (mblen(buf, (size_t)1) <= 0)
761 n = 2;
762 else
763 n = 1;
764 }
765 }
766# endif
767#endif
768 }
769
770 mb_bytelen_tab[i] = n;
771 }
772
773#ifdef LEN_FROM_CONV
774 convert_setup(&vimconv, NULL, NULL);
775#endif
776
777 /* The cell width depends on the type of multi-byte characters. */
778 (void)init_chartab();
779
780 /* When enc_utf8 is set or reset, (de)allocate ScreenLinesUC[] */
781 screenalloc(FALSE);
782
783 /* When using Unicode, set default for 'fileencodings'. */
784 if (enc_utf8 && !option_was_set((char_u *)"fencs"))
785 set_string_option_direct((char_u *)"fencs", -1,
Bram Moolenaar5e3cb7e2006-02-27 23:58:35 +0000786 (char_u *)"ucs-bom,utf-8,default,latin1", OPT_FREE, 0);
787
Bram Moolenaar071d4272004-06-13 20:20:40 +0000788#if defined(HAVE_BIND_TEXTDOMAIN_CODESET) && defined(FEAT_GETTEXT)
789 /* GNU gettext 0.10.37 supports this feature: set the codeset used for
790 * translated messages independently from the current locale. */
791 (void)bind_textdomain_codeset(VIMPACKAGE,
792 enc_utf8 ? "utf-8" : (char *)p_enc);
793#endif
794
Bram Moolenaar15d0a8c2004-09-06 17:44:46 +0000795#ifdef WIN32
796 /* When changing 'encoding' while starting up, then convert the command
797 * line arguments from the active codepage to 'encoding'. */
798 if (starting != 0)
Bram Moolenaar15d0a8c2004-09-06 17:44:46 +0000799 fix_arg_enc();
Bram Moolenaar15d0a8c2004-09-06 17:44:46 +0000800#endif
801
Bram Moolenaar071d4272004-06-13 20:20:40 +0000802#ifdef FEAT_AUTOCMD
803 /* Fire an autocommand to let people do custom font setup. This must be
804 * after Vim has been setup for the new encoding. */
805 apply_autocmds(EVENT_ENCODINGCHANGED, NULL, (char_u *)"", FALSE, curbuf);
806#endif
807
Bram Moolenaar2b48ad52006-03-12 21:56:11 +0000808#ifdef FEAT_SPELL
Bram Moolenaar402d2fe2005-04-15 21:00:38 +0000809 /* Need to reload spell dictionaries */
810 spell_reload();
811#endif
812
Bram Moolenaar071d4272004-06-13 20:20:40 +0000813 return NULL;
814}
815
816/*
817 * Return the size of the BOM for the current buffer:
818 * 0 - no BOM
819 * 2 - UCS-2 or UTF-16 BOM
820 * 4 - UCS-4 BOM
821 * 3 - UTF-8 BOM
822 */
823 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +0100824bomb_size(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000825{
826 int n = 0;
827
828 if (curbuf->b_p_bomb && !curbuf->b_p_bin)
829 {
830 if (*curbuf->b_p_fenc == NUL)
831 {
832 if (enc_utf8)
833 {
834 if (enc_unicode != 0)
835 n = enc_unicode;
836 else
837 n = 3;
838 }
839 }
840 else if (STRCMP(curbuf->b_p_fenc, "utf-8") == 0)
841 n = 3;
842 else if (STRNCMP(curbuf->b_p_fenc, "ucs-2", 5) == 0
843 || STRNCMP(curbuf->b_p_fenc, "utf-16", 6) == 0)
844 n = 2;
845 else if (STRNCMP(curbuf->b_p_fenc, "ucs-4", 5) == 0)
846 n = 4;
847 }
848 return n;
849}
850
851/*
Bram Moolenaar836082d2011-08-10 13:21:46 +0200852 * Remove all BOM from "s" by moving remaining text.
853 */
854 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +0100855remove_bom(char_u *s)
Bram Moolenaar836082d2011-08-10 13:21:46 +0200856{
857 if (enc_utf8)
858 {
859 char_u *p = s;
860
861 while ((p = vim_strbyte(p, 0xef)) != NULL)
862 {
863 if (p[1] == 0xbb && p[2] == 0xbf)
864 STRMOVE(p, p + 3);
865 else
866 ++p;
867 }
868 }
869}
870
871/*
Bram Moolenaar071d4272004-06-13 20:20:40 +0000872 * Get class of pointer:
873 * 0 for blank or NUL
874 * 1 for punctuation
875 * 2 for an (ASCII) word character
876 * >2 for other word characters
877 */
878 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +0100879mb_get_class(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000880{
Bram Moolenaarf813a182013-01-30 13:59:37 +0100881 return mb_get_class_buf(p, curbuf);
882}
883
884 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +0100885mb_get_class_buf(char_u *p, buf_T *buf)
Bram Moolenaarf813a182013-01-30 13:59:37 +0100886{
Bram Moolenaar071d4272004-06-13 20:20:40 +0000887 if (MB_BYTE2LEN(p[0]) == 1)
888 {
889 if (p[0] == NUL || vim_iswhite(p[0]))
890 return 0;
Bram Moolenaarf813a182013-01-30 13:59:37 +0100891 if (vim_iswordc_buf(p[0], buf))
Bram Moolenaar071d4272004-06-13 20:20:40 +0000892 return 2;
893 return 1;
894 }
895 if (enc_dbcs != 0 && p[0] != NUL && p[1] != NUL)
896 return dbcs_class(p[0], p[1]);
897 if (enc_utf8)
Bram Moolenaar4019cf92017-01-28 16:39:34 +0100898 return utf_class_buf(utf_ptr2char(p), buf);
Bram Moolenaar071d4272004-06-13 20:20:40 +0000899 return 0;
900}
901
902/*
903 * Get class of a double-byte character. This always returns 3 or bigger.
904 * TODO: Should return 1 for punctuation.
905 */
906 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +0100907dbcs_class(unsigned lead, unsigned trail)
Bram Moolenaar071d4272004-06-13 20:20:40 +0000908{
909 switch (enc_dbcs)
910 {
Bram Moolenaar84a05ac2013-05-06 04:24:17 +0200911 /* please add classify routine for your language in here */
Bram Moolenaar071d4272004-06-13 20:20:40 +0000912
913 case DBCS_JPNU: /* ? */
914 case DBCS_JPN:
915 {
916 /* JIS code classification */
917 unsigned char lb = lead;
918 unsigned char tb = trail;
919
920 /* convert process code to JIS */
921# if defined(WIN3264) || defined(WIN32UNIX) || defined(MACOS)
922 /* process code is SJIS */
923 if (lb <= 0x9f)
924 lb = (lb - 0x81) * 2 + 0x21;
925 else
926 lb = (lb - 0xc1) * 2 + 0x21;
927 if (tb <= 0x7e)
928 tb -= 0x1f;
929 else if (tb <= 0x9e)
930 tb -= 0x20;
931 else
932 {
933 tb -= 0x7e;
934 lb += 1;
935 }
936# else
937 /*
938 * XXX: Code page identification can not use with all
939 * system! So, some other encoding information
940 * will be needed.
941 * In japanese: SJIS,EUC,UNICODE,(JIS)
942 * Note that JIS-code system don't use as
943 * process code in most system because it uses
944 * escape sequences(JIS is context depend encoding).
945 */
946 /* assume process code is JAPANESE-EUC */
947 lb &= 0x7f;
948 tb &= 0x7f;
949# endif
950 /* exceptions */
951 switch (lb << 8 | tb)
952 {
953 case 0x2121: /* ZENKAKU space */
954 return 0;
Bram Moolenaarcc63c642013-11-12 04:44:01 +0100955 case 0x2122: /* TOU-TEN (Japanese comma) */
956 case 0x2123: /* KU-TEN (Japanese period) */
Bram Moolenaar071d4272004-06-13 20:20:40 +0000957 case 0x2124: /* ZENKAKU comma */
958 case 0x2125: /* ZENKAKU period */
959 return 1;
960 case 0x213c: /* prolongedsound handled as KATAKANA */
961 return 13;
962 }
963 /* sieved by KU code */
964 switch (lb)
965 {
966 case 0x21:
967 case 0x22:
968 /* special symbols */
969 return 10;
970 case 0x23:
971 /* alpha-numeric */
972 return 11;
973 case 0x24:
974 /* hiragana */
975 return 12;
976 case 0x25:
977 /* katakana */
978 return 13;
979 case 0x26:
980 /* greek */
981 return 14;
982 case 0x27:
983 /* russian */
984 return 15;
985 case 0x28:
986 /* lines */
987 return 16;
988 default:
989 /* kanji */
990 return 17;
991 }
992 }
993
994 case DBCS_KORU: /* ? */
995 case DBCS_KOR:
996 {
997 /* KS code classification */
998 unsigned char c1 = lead;
999 unsigned char c2 = trail;
1000
1001 /*
1002 * 20 : Hangul
1003 * 21 : Hanja
1004 * 22 : Symbols
1005 * 23 : Alpha-numeric/Roman Letter (Full width)
1006 * 24 : Hangul Letter(Alphabet)
1007 * 25 : Roman Numeral/Greek Letter
1008 * 26 : Box Drawings
1009 * 27 : Unit Symbols
1010 * 28 : Circled/Parenthesized Letter
Bram Moolenaar84a05ac2013-05-06 04:24:17 +02001011 * 29 : Hiragana/Katakana
Bram Moolenaar071d4272004-06-13 20:20:40 +00001012 * 30 : Cyrillic Letter
1013 */
1014
1015 if (c1 >= 0xB0 && c1 <= 0xC8)
1016 /* Hangul */
1017 return 20;
1018#if defined(WIN3264) || defined(WIN32UNIX)
1019 else if (c1 <= 0xA0 || c2 <= 0xA0)
1020 /* Extended Hangul Region : MS UHC(Unified Hangul Code) */
1021 /* c1: 0x81-0xA0 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xFE
1022 * c1: 0xA1-0xC6 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xA0
1023 */
1024 return 20;
1025#endif
1026
1027 else if (c1 >= 0xCA && c1 <= 0xFD)
1028 /* Hanja */
1029 return 21;
1030 else switch (c1)
1031 {
1032 case 0xA1:
1033 case 0xA2:
1034 /* Symbols */
1035 return 22;
1036 case 0xA3:
1037 /* Alpha-numeric */
1038 return 23;
1039 case 0xA4:
1040 /* Hangul Letter(Alphabet) */
1041 return 24;
1042 case 0xA5:
1043 /* Roman Numeral/Greek Letter */
1044 return 25;
1045 case 0xA6:
1046 /* Box Drawings */
1047 return 26;
1048 case 0xA7:
1049 /* Unit Symbols */
1050 return 27;
1051 case 0xA8:
1052 case 0xA9:
1053 if (c2 <= 0xAF)
1054 return 25; /* Roman Letter */
1055 else if (c2 >= 0xF6)
1056 return 22; /* Symbols */
1057 else
1058 /* Circled/Parenthesized Letter */
1059 return 28;
1060 case 0xAA:
1061 case 0xAB:
Bram Moolenaar84a05ac2013-05-06 04:24:17 +02001062 /* Hiragana/Katakana */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001063 return 29;
1064 case 0xAC:
1065 /* Cyrillic Letter */
1066 return 30;
1067 }
1068 }
1069 default:
1070 break;
1071 }
1072 return 3;
1073}
1074
1075/*
1076 * mb_char2len() function pointer.
1077 * Return length in bytes of character "c".
1078 * Returns 1 for a single-byte character.
1079 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001080 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001081latin_char2len(int c UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001082{
1083 return 1;
1084}
1085
1086 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001087dbcs_char2len(
1088 int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001089{
1090 if (c >= 0x100)
1091 return 2;
1092 return 1;
1093}
1094
1095/*
1096 * mb_char2bytes() function pointer.
1097 * Convert a character to its bytes.
1098 * Returns the length in bytes.
1099 */
1100 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001101latin_char2bytes(int c, char_u *buf)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001102{
1103 buf[0] = c;
1104 return 1;
1105}
1106
1107 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001108dbcs_char2bytes(int c, char_u *buf)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001109{
1110 if (c >= 0x100)
1111 {
1112 buf[0] = (unsigned)c >> 8;
1113 buf[1] = c;
Bram Moolenaar217ad922005-03-20 22:37:15 +00001114 /* Never use a NUL byte, it causes lots of trouble. It's an invalid
1115 * character anyway. */
1116 if (buf[1] == NUL)
1117 buf[1] = '\n';
Bram Moolenaar071d4272004-06-13 20:20:40 +00001118 return 2;
1119 }
1120 buf[0] = c;
1121 return 1;
1122}
1123
1124/*
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001125 * mb_ptr2len() function pointer.
Bram Moolenaar071d4272004-06-13 20:20:40 +00001126 * Get byte length of character at "*p" but stop at a NUL.
1127 * For UTF-8 this includes following composing characters.
1128 * Returns 0 when *p is NUL.
Bram Moolenaar071d4272004-06-13 20:20:40 +00001129 */
1130 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001131latin_ptr2len(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001132{
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001133 return MB_BYTE2LEN(*p);
Bram Moolenaar071d4272004-06-13 20:20:40 +00001134}
1135
1136 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001137dbcs_ptr2len(
1138 char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001139{
1140 int len;
1141
1142 /* Check if second byte is not missing. */
1143 len = MB_BYTE2LEN(*p);
1144 if (len == 2 && p[1] == NUL)
1145 len = 1;
1146 return len;
1147}
1148
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001149/*
1150 * mb_ptr2len_len() function pointer.
1151 * Like mb_ptr2len(), but limit to read "size" bytes.
1152 * Returns 0 for an empty string.
1153 * Returns 1 for an illegal char or an incomplete byte sequence.
1154 */
1155 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001156latin_ptr2len_len(char_u *p, int size)
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001157{
1158 if (size < 1 || *p == NUL)
1159 return 0;
1160 return 1;
1161}
1162
1163 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001164dbcs_ptr2len_len(char_u *p, int size)
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001165{
1166 int len;
1167
1168 if (size < 1 || *p == NUL)
1169 return 0;
1170 if (size == 1)
1171 return 1;
1172 /* Check that second byte is not missing. */
1173 len = MB_BYTE2LEN(*p);
1174 if (len == 2 && p[1] == NUL)
1175 len = 1;
1176 return len;
1177}
1178
Bram Moolenaar071d4272004-06-13 20:20:40 +00001179struct interval
1180{
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01001181 long first;
1182 long last;
Bram Moolenaar071d4272004-06-13 20:20:40 +00001183};
Bram Moolenaar071d4272004-06-13 20:20:40 +00001184
1185/*
1186 * Return TRUE if "c" is in "table[size / sizeof(struct interval)]".
1187 */
1188 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001189intable(struct interval *table, size_t size, int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001190{
1191 int mid, bot, top;
1192
1193 /* first quick check for Latin1 etc. characters */
1194 if (c < table[0].first)
1195 return FALSE;
1196
1197 /* binary search in table */
1198 bot = 0;
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00001199 top = (int)(size / sizeof(struct interval) - 1);
Bram Moolenaar071d4272004-06-13 20:20:40 +00001200 while (top >= bot)
1201 {
1202 mid = (bot + top) / 2;
1203 if (table[mid].last < c)
1204 bot = mid + 1;
1205 else if (table[mid].first > c)
1206 top = mid - 1;
1207 else
1208 return TRUE;
1209 }
1210 return FALSE;
1211}
1212
Bram Moolenaarcb070082016-04-02 22:14:51 +02001213/* Sorted list of non-overlapping intervals of East Asian Ambiguous
1214 * characters, generated with ../runtime/tools/unicode.vim. */
1215static struct interval ambiguous[] =
1216{
1217 {0x00a1, 0x00a1},
1218 {0x00a4, 0x00a4},
1219 {0x00a7, 0x00a8},
1220 {0x00aa, 0x00aa},
1221 {0x00ad, 0x00ae},
1222 {0x00b0, 0x00b4},
1223 {0x00b6, 0x00ba},
1224 {0x00bc, 0x00bf},
1225 {0x00c6, 0x00c6},
1226 {0x00d0, 0x00d0},
1227 {0x00d7, 0x00d8},
1228 {0x00de, 0x00e1},
1229 {0x00e6, 0x00e6},
1230 {0x00e8, 0x00ea},
1231 {0x00ec, 0x00ed},
1232 {0x00f0, 0x00f0},
1233 {0x00f2, 0x00f3},
1234 {0x00f7, 0x00fa},
1235 {0x00fc, 0x00fc},
1236 {0x00fe, 0x00fe},
1237 {0x0101, 0x0101},
1238 {0x0111, 0x0111},
1239 {0x0113, 0x0113},
1240 {0x011b, 0x011b},
1241 {0x0126, 0x0127},
1242 {0x012b, 0x012b},
1243 {0x0131, 0x0133},
1244 {0x0138, 0x0138},
1245 {0x013f, 0x0142},
1246 {0x0144, 0x0144},
1247 {0x0148, 0x014b},
1248 {0x014d, 0x014d},
1249 {0x0152, 0x0153},
1250 {0x0166, 0x0167},
1251 {0x016b, 0x016b},
1252 {0x01ce, 0x01ce},
1253 {0x01d0, 0x01d0},
1254 {0x01d2, 0x01d2},
1255 {0x01d4, 0x01d4},
1256 {0x01d6, 0x01d6},
1257 {0x01d8, 0x01d8},
1258 {0x01da, 0x01da},
1259 {0x01dc, 0x01dc},
1260 {0x0251, 0x0251},
1261 {0x0261, 0x0261},
1262 {0x02c4, 0x02c4},
1263 {0x02c7, 0x02c7},
1264 {0x02c9, 0x02cb},
1265 {0x02cd, 0x02cd},
1266 {0x02d0, 0x02d0},
1267 {0x02d8, 0x02db},
1268 {0x02dd, 0x02dd},
1269 {0x02df, 0x02df},
1270 {0x0300, 0x036f},
1271 {0x0391, 0x03a1},
1272 {0x03a3, 0x03a9},
1273 {0x03b1, 0x03c1},
1274 {0x03c3, 0x03c9},
1275 {0x0401, 0x0401},
1276 {0x0410, 0x044f},
1277 {0x0451, 0x0451},
1278 {0x2010, 0x2010},
1279 {0x2013, 0x2016},
1280 {0x2018, 0x2019},
1281 {0x201c, 0x201d},
1282 {0x2020, 0x2022},
1283 {0x2024, 0x2027},
1284 {0x2030, 0x2030},
1285 {0x2032, 0x2033},
1286 {0x2035, 0x2035},
1287 {0x203b, 0x203b},
1288 {0x203e, 0x203e},
1289 {0x2074, 0x2074},
1290 {0x207f, 0x207f},
1291 {0x2081, 0x2084},
1292 {0x20ac, 0x20ac},
1293 {0x2103, 0x2103},
1294 {0x2105, 0x2105},
1295 {0x2109, 0x2109},
1296 {0x2113, 0x2113},
1297 {0x2116, 0x2116},
1298 {0x2121, 0x2122},
1299 {0x2126, 0x2126},
1300 {0x212b, 0x212b},
1301 {0x2153, 0x2154},
1302 {0x215b, 0x215e},
1303 {0x2160, 0x216b},
1304 {0x2170, 0x2179},
1305 {0x2189, 0x2189},
1306 {0x2190, 0x2199},
1307 {0x21b8, 0x21b9},
1308 {0x21d2, 0x21d2},
1309 {0x21d4, 0x21d4},
1310 {0x21e7, 0x21e7},
1311 {0x2200, 0x2200},
1312 {0x2202, 0x2203},
1313 {0x2207, 0x2208},
1314 {0x220b, 0x220b},
1315 {0x220f, 0x220f},
1316 {0x2211, 0x2211},
1317 {0x2215, 0x2215},
1318 {0x221a, 0x221a},
1319 {0x221d, 0x2220},
1320 {0x2223, 0x2223},
1321 {0x2225, 0x2225},
1322 {0x2227, 0x222c},
1323 {0x222e, 0x222e},
1324 {0x2234, 0x2237},
1325 {0x223c, 0x223d},
1326 {0x2248, 0x2248},
1327 {0x224c, 0x224c},
1328 {0x2252, 0x2252},
1329 {0x2260, 0x2261},
1330 {0x2264, 0x2267},
1331 {0x226a, 0x226b},
1332 {0x226e, 0x226f},
1333 {0x2282, 0x2283},
1334 {0x2286, 0x2287},
1335 {0x2295, 0x2295},
1336 {0x2299, 0x2299},
1337 {0x22a5, 0x22a5},
1338 {0x22bf, 0x22bf},
1339 {0x2312, 0x2312},
1340 {0x2460, 0x24e9},
1341 {0x24eb, 0x254b},
1342 {0x2550, 0x2573},
1343 {0x2580, 0x258f},
1344 {0x2592, 0x2595},
1345 {0x25a0, 0x25a1},
1346 {0x25a3, 0x25a9},
1347 {0x25b2, 0x25b3},
1348 {0x25b6, 0x25b7},
1349 {0x25bc, 0x25bd},
1350 {0x25c0, 0x25c1},
1351 {0x25c6, 0x25c8},
1352 {0x25cb, 0x25cb},
1353 {0x25ce, 0x25d1},
1354 {0x25e2, 0x25e5},
1355 {0x25ef, 0x25ef},
1356 {0x2605, 0x2606},
1357 {0x2609, 0x2609},
1358 {0x260e, 0x260f},
Bram Moolenaarcb070082016-04-02 22:14:51 +02001359 {0x261c, 0x261c},
1360 {0x261e, 0x261e},
1361 {0x2640, 0x2640},
1362 {0x2642, 0x2642},
1363 {0x2660, 0x2661},
1364 {0x2663, 0x2665},
1365 {0x2667, 0x266a},
1366 {0x266c, 0x266d},
1367 {0x266f, 0x266f},
1368 {0x269e, 0x269f},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02001369 {0x26bf, 0x26bf},
1370 {0x26c6, 0x26cd},
1371 {0x26cf, 0x26d3},
1372 {0x26d5, 0x26e1},
Bram Moolenaarcb070082016-04-02 22:14:51 +02001373 {0x26e3, 0x26e3},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02001374 {0x26e8, 0x26e9},
1375 {0x26eb, 0x26f1},
1376 {0x26f4, 0x26f4},
1377 {0x26f6, 0x26f9},
1378 {0x26fb, 0x26fc},
1379 {0x26fe, 0x26ff},
Bram Moolenaarcb070082016-04-02 22:14:51 +02001380 {0x273d, 0x273d},
Bram Moolenaarcb070082016-04-02 22:14:51 +02001381 {0x2776, 0x277f},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02001382 {0x2b56, 0x2b59},
Bram Moolenaarcb070082016-04-02 22:14:51 +02001383 {0x3248, 0x324f},
1384 {0xe000, 0xf8ff},
1385 {0xfe00, 0xfe0f},
1386 {0xfffd, 0xfffd},
1387 {0x1f100, 0x1f10a},
1388 {0x1f110, 0x1f12d},
1389 {0x1f130, 0x1f169},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02001390 {0x1f170, 0x1f18d},
1391 {0x1f18f, 0x1f190},
1392 {0x1f19b, 0x1f1ac},
Bram Moolenaarcb070082016-04-02 22:14:51 +02001393 {0xe0100, 0xe01ef},
1394 {0xf0000, 0xffffd},
1395 {0x100000, 0x10fffd}
1396};
1397
Bram Moolenaar071d4272004-06-13 20:20:40 +00001398/*
1399 * For UTF-8 character "c" return 2 for a double-width character, 1 for others.
1400 * Returns 4 or 6 for an unprintable character.
1401 * Is only correct for characters >= 0x80.
1402 * When p_ambw is "double", return 2 for a character with East Asian Width
1403 * class 'A'(mbiguous).
1404 */
1405 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001406utf_char2cells(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001407{
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001408 /* Sorted list of non-overlapping intervals of East Asian double width
1409 * characters, generated with ../runtime/tools/unicode.vim. */
1410 static struct interval doublewidth[] =
1411 {
1412 {0x1100, 0x115f},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02001413 {0x231a, 0x231b},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001414 {0x2329, 0x232a},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02001415 {0x23e9, 0x23ec},
1416 {0x23f0, 0x23f0},
1417 {0x23f3, 0x23f3},
1418 {0x25fd, 0x25fe},
1419 {0x2614, 0x2615},
1420 {0x2648, 0x2653},
1421 {0x267f, 0x267f},
1422 {0x2693, 0x2693},
1423 {0x26a1, 0x26a1},
1424 {0x26aa, 0x26ab},
1425 {0x26bd, 0x26be},
1426 {0x26c4, 0x26c5},
1427 {0x26ce, 0x26ce},
1428 {0x26d4, 0x26d4},
1429 {0x26ea, 0x26ea},
1430 {0x26f2, 0x26f3},
1431 {0x26f5, 0x26f5},
1432 {0x26fa, 0x26fa},
1433 {0x26fd, 0x26fd},
1434 {0x2705, 0x2705},
1435 {0x270a, 0x270b},
1436 {0x2728, 0x2728},
1437 {0x274c, 0x274c},
1438 {0x274e, 0x274e},
1439 {0x2753, 0x2755},
1440 {0x2757, 0x2757},
1441 {0x2795, 0x2797},
1442 {0x27b0, 0x27b0},
1443 {0x27bf, 0x27bf},
1444 {0x2b1b, 0x2b1c},
1445 {0x2b50, 0x2b50},
1446 {0x2b55, 0x2b55},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001447 {0x2e80, 0x2e99},
1448 {0x2e9b, 0x2ef3},
1449 {0x2f00, 0x2fd5},
1450 {0x2ff0, 0x2ffb},
Bram Moolenaarea676722015-01-14 17:40:09 +01001451 {0x3000, 0x303e},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001452 {0x3041, 0x3096},
Bram Moolenaarea676722015-01-14 17:40:09 +01001453 {0x3099, 0x30ff},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001454 {0x3105, 0x312d},
1455 {0x3131, 0x318e},
Bram Moolenaarea676722015-01-14 17:40:09 +01001456 {0x3190, 0x31ba},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001457 {0x31c0, 0x31e3},
1458 {0x31f0, 0x321e},
1459 {0x3220, 0x3247},
1460 {0x3250, 0x32fe},
1461 {0x3300, 0x4dbf},
1462 {0x4e00, 0xa48c},
1463 {0xa490, 0xa4c6},
1464 {0xa960, 0xa97c},
1465 {0xac00, 0xd7a3},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001466 {0xf900, 0xfaff},
1467 {0xfe10, 0xfe19},
1468 {0xfe30, 0xfe52},
1469 {0xfe54, 0xfe66},
1470 {0xfe68, 0xfe6b},
1471 {0xff01, 0xff60},
1472 {0xffe0, 0xffe6},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02001473 {0x16fe0, 0x16fe0},
1474 {0x17000, 0x187ec},
1475 {0x18800, 0x18af2},
Bram Moolenaard63aff02016-03-21 22:15:30 +01001476 {0x1b000, 0x1b001},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02001477 {0x1f004, 0x1f004},
1478 {0x1f0cf, 0x1f0cf},
1479 {0x1f18e, 0x1f18e},
1480 {0x1f191, 0x1f19a},
Bram Moolenaard63aff02016-03-21 22:15:30 +01001481 {0x1f200, 0x1f202},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02001482 {0x1f210, 0x1f23b},
Bram Moolenaard63aff02016-03-21 22:15:30 +01001483 {0x1f240, 0x1f248},
1484 {0x1f250, 0x1f251},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02001485 {0x1f300, 0x1f320},
1486 {0x1f32d, 0x1f335},
1487 {0x1f337, 0x1f37c},
1488 {0x1f37e, 0x1f393},
1489 {0x1f3a0, 0x1f3ca},
1490 {0x1f3cf, 0x1f3d3},
1491 {0x1f3e0, 0x1f3f0},
1492 {0x1f3f4, 0x1f3f4},
1493 {0x1f3f8, 0x1f43e},
1494 {0x1f440, 0x1f440},
1495 {0x1f442, 0x1f4fc},
1496 {0x1f4ff, 0x1f53d},
1497 {0x1f54b, 0x1f54e},
1498 {0x1f550, 0x1f567},
1499 {0x1f57a, 0x1f57a},
1500 {0x1f595, 0x1f596},
1501 {0x1f5a4, 0x1f5a4},
1502 {0x1f5fb, 0x1f64f},
1503 {0x1f680, 0x1f6c5},
1504 {0x1f6cc, 0x1f6cc},
1505 {0x1f6d0, 0x1f6d2},
1506 {0x1f6eb, 0x1f6ec},
1507 {0x1f6f4, 0x1f6f6},
1508 {0x1f910, 0x1f91e},
1509 {0x1f920, 0x1f927},
1510 {0x1f930, 0x1f930},
1511 {0x1f933, 0x1f93e},
1512 {0x1f940, 0x1f94b},
1513 {0x1f950, 0x1f95e},
1514 {0x1f980, 0x1f991},
1515 {0x1f9c0, 0x1f9c0},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001516 {0x20000, 0x2fffd},
1517 {0x30000, 0x3fffd}
1518 };
Bram Moolenaarea676722015-01-14 17:40:09 +01001519
Bram Moolenaarb86f10e2016-03-21 22:09:44 +01001520 /* Sorted list of non-overlapping intervals of Emoji characters that don't
1521 * have ambiguous or double width,
1522 * based on http://unicode.org/emoji/charts/emoji-list.html */
1523 static struct interval emoji_width[] =
1524 {
Bram Moolenaarb86f10e2016-03-21 22:09:44 +01001525 {0x1f004, 0x1f004},
1526 {0x1f0cf, 0x1f0cf},
1527 {0x1f1e6, 0x1f1ff},
1528 {0x1f300, 0x1f320},
1529 {0x1f330, 0x1f335},
1530 {0x1f337, 0x1f37c},
1531 {0x1f380, 0x1f393},
1532 {0x1f3a0, 0x1f3c4},
1533 {0x1f3c6, 0x1f3ca},
1534 {0x1f3e0, 0x1f3f0},
1535 {0x1f400, 0x1f43e},
1536 {0x1f440, 0x1f440},
1537 {0x1f442, 0x1f4f7},
1538 {0x1f4f9, 0x1f4fc},
1539 {0x1f500, 0x1f53d},
1540 {0x1f550, 0x1f567},
1541 {0x1f5fb, 0x1f640},
1542 {0x1f645, 0x1f64f},
1543 {0x1f680, 0x1f6c5}
1544 };
1545
Bram Moolenaar071d4272004-06-13 20:20:40 +00001546 if (c >= 0x100)
1547 {
1548#ifdef USE_WCHAR_FUNCTIONS
1549 /*
1550 * Assume the library function wcwidth() works better than our own
1551 * stuff. It should return 1 for ambiguous width chars!
1552 */
1553 int n = wcwidth(c);
1554
1555 if (n < 0)
1556 return 6; /* unprintable, displays <xxxx> */
1557 if (n > 1)
1558 return n;
1559#else
1560 if (!utf_printable(c))
1561 return 6; /* unprintable, displays <xxxx> */
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001562 if (intable(doublewidth, sizeof(doublewidth), c))
Bram Moolenaar071d4272004-06-13 20:20:40 +00001563 return 2;
1564#endif
Bram Moolenaarb86f10e2016-03-21 22:09:44 +01001565 if (p_emoji && intable(emoji_width, sizeof(emoji_width), c))
Bram Moolenaar3848e002016-03-19 18:42:29 +01001566 return 2;
Bram Moolenaar071d4272004-06-13 20:20:40 +00001567 }
1568
1569 /* Characters below 0x100 are influenced by 'isprint' option */
1570 else if (c >= 0x80 && !vim_isprintc(c))
1571 return 4; /* unprintable, displays <xx> */
1572
1573 if (c >= 0x80 && *p_ambw == 'd' && intable(ambiguous, sizeof(ambiguous), c))
1574 return 2;
1575
1576 return 1;
1577}
1578
1579/*
1580 * mb_ptr2cells() function pointer.
1581 * Return the number of display cells character at "*p" occupies.
1582 * This doesn't take care of unprintable characters, use ptr2cells() for that.
1583 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001584 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001585latin_ptr2cells(char_u *p UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001586{
1587 return 1;
1588}
1589
1590 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001591utf_ptr2cells(
1592 char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001593{
1594 int c;
1595
1596 /* Need to convert to a wide character. */
1597 if (*p >= 0x80)
1598 {
1599 c = utf_ptr2char(p);
1600 /* An illegal byte is displayed as <xx>. */
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001601 if (utf_ptr2len(p) == 1 || c == NUL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001602 return 4;
1603 /* If the char is ASCII it must be an overlong sequence. */
1604 if (c < 0x80)
1605 return char2cells(c);
1606 return utf_char2cells(c);
1607 }
1608 return 1;
1609}
1610
1611 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001612dbcs_ptr2cells(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001613{
1614 /* Number of cells is equal to number of bytes, except for euc-jp when
1615 * the first byte is 0x8e. */
1616 if (enc_dbcs == DBCS_JPNU && *p == 0x8e)
1617 return 1;
1618 return MB_BYTE2LEN(*p);
1619}
1620
1621/*
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001622 * mb_ptr2cells_len() function pointer.
1623 * Like mb_ptr2cells(), but limit string length to "size".
1624 * For an empty string or truncated character returns 1.
1625 */
1626 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001627latin_ptr2cells_len(char_u *p UNUSED, int size UNUSED)
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001628{
1629 return 1;
1630}
1631
1632 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001633utf_ptr2cells_len(char_u *p, int size)
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001634{
1635 int c;
1636
1637 /* Need to convert to a wide character. */
1638 if (size > 0 && *p >= 0x80)
1639 {
1640 if (utf_ptr2len_len(p, size) < utf8len_tab[*p])
Bram Moolenaar24397332009-12-02 14:02:39 +00001641 return 1; /* truncated */
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001642 c = utf_ptr2char(p);
1643 /* An illegal byte is displayed as <xx>. */
1644 if (utf_ptr2len(p) == 1 || c == NUL)
1645 return 4;
1646 /* If the char is ASCII it must be an overlong sequence. */
1647 if (c < 0x80)
1648 return char2cells(c);
1649 return utf_char2cells(c);
1650 }
1651 return 1;
1652}
1653
1654 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001655dbcs_ptr2cells_len(char_u *p, int size)
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001656{
1657 /* Number of cells is equal to number of bytes, except for euc-jp when
1658 * the first byte is 0x8e. */
1659 if (size <= 1 || (enc_dbcs == DBCS_JPNU && *p == 0x8e))
1660 return 1;
1661 return MB_BYTE2LEN(*p);
1662}
1663
1664/*
Bram Moolenaar071d4272004-06-13 20:20:40 +00001665 * mb_char2cells() function pointer.
1666 * Return the number of display cells character "c" occupies.
1667 * Only takes care of multi-byte chars, not "^C" and such.
1668 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001669 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001670latin_char2cells(int c UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001671{
1672 return 1;
1673}
1674
1675 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001676dbcs_char2cells(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001677{
1678 /* Number of cells is equal to number of bytes, except for euc-jp when
1679 * the first byte is 0x8e. */
1680 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e)
1681 return 1;
1682 /* use the first byte */
1683 return MB_BYTE2LEN((unsigned)c >> 8);
1684}
1685
1686/*
Bram Moolenaar72597a52010-07-18 15:31:08 +02001687 * Return the number of cells occupied by string "p".
1688 * Stop at a NUL character. When "len" >= 0 stop at character "p[len]".
1689 */
1690 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001691mb_string2cells(char_u *p, int len)
Bram Moolenaar72597a52010-07-18 15:31:08 +02001692{
1693 int i;
1694 int clen = 0;
1695
1696 for (i = 0; (len < 0 || i < len) && p[i] != NUL; i += (*mb_ptr2len)(p + i))
1697 clen += (*mb_ptr2cells)(p + i);
1698 return clen;
1699}
1700
1701/*
Bram Moolenaar071d4272004-06-13 20:20:40 +00001702 * mb_off2cells() function pointer.
1703 * Return number of display cells for char at ScreenLines[off].
Bram Moolenaar367329b2007-08-30 11:53:22 +00001704 * We make sure that the offset used is less than "max_off".
Bram Moolenaar071d4272004-06-13 20:20:40 +00001705 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001706 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001707latin_off2cells(unsigned off UNUSED, unsigned max_off UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001708{
1709 return 1;
1710}
1711
1712 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001713dbcs_off2cells(unsigned off, unsigned max_off)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001714{
Bram Moolenaar367329b2007-08-30 11:53:22 +00001715 /* never check beyond end of the line */
1716 if (off >= max_off)
1717 return 1;
1718
Bram Moolenaar071d4272004-06-13 20:20:40 +00001719 /* Number of cells is equal to number of bytes, except for euc-jp when
1720 * the first byte is 0x8e. */
1721 if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e)
1722 return 1;
1723 return MB_BYTE2LEN(ScreenLines[off]);
1724}
1725
1726 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001727utf_off2cells(unsigned off, unsigned max_off)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001728{
Bram Moolenaar367329b2007-08-30 11:53:22 +00001729 return (off + 1 < max_off && ScreenLines[off + 1] == 0) ? 2 : 1;
Bram Moolenaar071d4272004-06-13 20:20:40 +00001730}
1731
1732/*
1733 * mb_ptr2char() function pointer.
1734 * Convert a byte sequence into a character.
1735 */
1736 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001737latin_ptr2char(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001738{
1739 return *p;
1740}
1741
1742 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001743dbcs_ptr2char(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001744{
1745 if (MB_BYTE2LEN(*p) > 1 && p[1] != NUL)
1746 return (p[0] << 8) + p[1];
1747 return *p;
1748}
1749
1750/*
1751 * Convert a UTF-8 byte sequence to a wide character.
1752 * If the sequence is illegal or truncated by a NUL the first byte is
1753 * returned.
1754 * Does not include composing characters, of course.
1755 */
1756 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001757utf_ptr2char(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001758{
1759 int len;
1760
1761 if (p[0] < 0x80) /* be quick for ASCII */
1762 return p[0];
1763
Bram Moolenaar24397332009-12-02 14:02:39 +00001764 len = utf8len_tab_zero[p[0]];
Bram Moolenaar89bf0922008-06-29 14:16:06 +00001765 if (len > 1 && (p[1] & 0xc0) == 0x80)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001766 {
1767 if (len == 2)
1768 return ((p[0] & 0x1f) << 6) + (p[1] & 0x3f);
1769 if ((p[2] & 0xc0) == 0x80)
1770 {
1771 if (len == 3)
1772 return ((p[0] & 0x0f) << 12) + ((p[1] & 0x3f) << 6)
1773 + (p[2] & 0x3f);
1774 if ((p[3] & 0xc0) == 0x80)
1775 {
1776 if (len == 4)
1777 return ((p[0] & 0x07) << 18) + ((p[1] & 0x3f) << 12)
1778 + ((p[2] & 0x3f) << 6) + (p[3] & 0x3f);
1779 if ((p[4] & 0xc0) == 0x80)
1780 {
1781 if (len == 5)
1782 return ((p[0] & 0x03) << 24) + ((p[1] & 0x3f) << 18)
1783 + ((p[2] & 0x3f) << 12) + ((p[3] & 0x3f) << 6)
1784 + (p[4] & 0x3f);
1785 if ((p[5] & 0xc0) == 0x80 && len == 6)
1786 return ((p[0] & 0x01) << 30) + ((p[1] & 0x3f) << 24)
1787 + ((p[2] & 0x3f) << 18) + ((p[3] & 0x3f) << 12)
1788 + ((p[4] & 0x3f) << 6) + (p[5] & 0x3f);
1789 }
1790 }
1791 }
1792 }
1793 /* Illegal value, just return the first byte */
1794 return p[0];
1795}
1796
1797/*
Bram Moolenaar35ee4522011-07-15 21:16:59 +02001798 * Convert a UTF-8 byte sequence to a wide character.
1799 * String is assumed to be terminated by NUL or after "n" bytes, whichever
1800 * comes first.
1801 * The function is safe in the sense that it never accesses memory beyond the
1802 * first "n" bytes of "s".
1803 *
1804 * On success, returns decoded codepoint, advances "s" to the beginning of
1805 * next character and decreases "n" accordingly.
1806 *
1807 * If end of string was reached, returns 0 and, if "n" > 0, advances "s" past
1808 * NUL byte.
1809 *
1810 * If byte sequence is illegal or incomplete, returns -1 and does not advance
1811 * "s".
1812 */
1813 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001814utf_safe_read_char_adv(char_u **s, size_t *n)
Bram Moolenaar35ee4522011-07-15 21:16:59 +02001815{
1816 int c, k;
1817
1818 if (*n == 0) /* end of buffer */
1819 return 0;
1820
1821 k = utf8len_tab_zero[**s];
1822
1823 if (k == 1)
1824 {
1825 /* ASCII character or NUL */
1826 (*n)--;
1827 return *(*s)++;
1828 }
1829
1830 if ((size_t)k <= *n)
1831 {
1832 /* We have a multibyte sequence and it isn't truncated by buffer
1833 * limits so utf_ptr2char() is safe to use. Or the first byte is
1834 * illegal (k=0), and it's also safe to use utf_ptr2char(). */
1835 c = utf_ptr2char(*s);
1836
1837 /* On failure, utf_ptr2char() returns the first byte, so here we
1838 * check equality with the first byte. The only non-ASCII character
1839 * which equals the first byte of its own UTF-8 representation is
1840 * U+00C3 (UTF-8: 0xC3 0x83), so need to check that special case too.
1841 * It's safe even if n=1, else we would have k=2 > n. */
1842 if (c != (int)(**s) || (c == 0xC3 && (*s)[1] == 0x83))
1843 {
1844 /* byte sequence was successfully decoded */
1845 *s += k;
1846 *n -= k;
1847 return c;
1848 }
1849 }
1850
1851 /* byte sequence is incomplete or illegal */
1852 return -1;
1853}
1854
1855/*
Bram Moolenaar071d4272004-06-13 20:20:40 +00001856 * Get character at **pp and advance *pp to the next character.
1857 * Note: composing characters are skipped!
1858 */
1859 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001860mb_ptr2char_adv(char_u **pp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001861{
1862 int c;
1863
1864 c = (*mb_ptr2char)(*pp);
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001865 *pp += (*mb_ptr2len)(*pp);
1866 return c;
1867}
1868
1869/*
1870 * Get character at **pp and advance *pp to the next character.
1871 * Note: composing characters are returned as separate characters.
1872 */
1873 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001874mb_cptr2char_adv(char_u **pp)
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001875{
1876 int c;
1877
1878 c = (*mb_ptr2char)(*pp);
1879 if (enc_utf8)
1880 *pp += utf_ptr2len(*pp);
1881 else
1882 *pp += (*mb_ptr2len)(*pp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00001883 return c;
1884}
1885
1886#if defined(FEAT_ARABIC) || defined(PROTO)
1887/*
1888 * Check whether we are dealing with Arabic combining characters.
1889 * Note: these are NOT really composing characters!
1890 */
1891 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001892arabic_combine(
1893 int one, /* first character */
1894 int two) /* character just after "one" */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001895{
1896 if (one == a_LAM)
1897 return arabic_maycombine(two);
1898 return FALSE;
1899}
1900
1901/*
1902 * Check whether we are dealing with a character that could be regarded as an
1903 * Arabic combining character, need to check the character before this.
1904 */
1905 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001906arabic_maycombine(int two)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001907{
1908 if (p_arshape && !p_tbidi)
1909 return (two == a_ALEF_MADDA
1910 || two == a_ALEF_HAMZA_ABOVE
1911 || two == a_ALEF_HAMZA_BELOW
1912 || two == a_ALEF);
1913 return FALSE;
1914}
1915
1916/*
1917 * Check if the character pointed to by "p2" is a composing character when it
1918 * comes after "p1". For Arabic sometimes "ab" is replaced with "c", which
1919 * behaves like a composing character.
1920 */
1921 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001922utf_composinglike(char_u *p1, char_u *p2)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001923{
1924 int c2;
1925
1926 c2 = utf_ptr2char(p2);
1927 if (utf_iscomposing(c2))
1928 return TRUE;
1929 if (!arabic_maycombine(c2))
1930 return FALSE;
1931 return arabic_combine(utf_ptr2char(p1), c2);
1932}
1933#endif
1934
1935/*
Bram Moolenaar29466f22007-05-10 17:45:37 +00001936 * Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO
Bram Moolenaar071d4272004-06-13 20:20:40 +00001937 * composing characters.
1938 */
1939 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001940utfc_ptr2char(
1941 char_u *p,
1942 int *pcc) /* return: composing chars, last one is 0 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001943{
1944 int len;
1945 int c;
1946 int cc;
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001947 int i = 0;
Bram Moolenaar071d4272004-06-13 20:20:40 +00001948
1949 c = utf_ptr2char(p);
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001950 len = utf_ptr2len(p);
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001951
Bram Moolenaar071d4272004-06-13 20:20:40 +00001952 /* Only accept a composing char when the first char isn't illegal. */
1953 if ((len > 1 || *p < 0x80)
1954 && p[len] >= 0x80
1955 && UTF_COMPOSINGLIKE(p, p + len))
1956 {
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001957 cc = utf_ptr2char(p + len);
1958 for (;;)
1959 {
1960 pcc[i++] = cc;
1961 if (i == MAX_MCO)
1962 break;
1963 len += utf_ptr2len(p + len);
1964 if (p[len] < 0x80 || !utf_iscomposing(cc = utf_ptr2char(p + len)))
1965 break;
1966 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00001967 }
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001968
1969 if (i < MAX_MCO) /* last composing char must be 0 */
1970 pcc[i] = 0;
1971
Bram Moolenaar071d4272004-06-13 20:20:40 +00001972 return c;
1973}
1974
1975/*
Bram Moolenaar29466f22007-05-10 17:45:37 +00001976 * Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO
Bram Moolenaar071d4272004-06-13 20:20:40 +00001977 * composing characters. Use no more than p[maxlen].
1978 */
1979 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001980utfc_ptr2char_len(
1981 char_u *p,
1982 int *pcc, /* return: composing chars, last one is 0 */
1983 int maxlen)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001984{
1985 int len;
1986 int c;
1987 int cc;
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001988 int i = 0;
Bram Moolenaar071d4272004-06-13 20:20:40 +00001989
1990 c = utf_ptr2char(p);
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001991 len = utf_ptr2len_len(p, maxlen);
Bram Moolenaar071d4272004-06-13 20:20:40 +00001992 /* Only accept a composing char when the first char isn't illegal. */
1993 if ((len > 1 || *p < 0x80)
1994 && len < maxlen
1995 && p[len] >= 0x80
1996 && UTF_COMPOSINGLIKE(p, p + len))
1997 {
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001998 cc = utf_ptr2char(p + len);
1999 for (;;)
2000 {
2001 pcc[i++] = cc;
2002 if (i == MAX_MCO)
2003 break;
2004 len += utf_ptr2len_len(p + len, maxlen - len);
2005 if (len >= maxlen
2006 || p[len] < 0x80
2007 || !utf_iscomposing(cc = utf_ptr2char(p + len)))
2008 break;
2009 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00002010 }
Bram Moolenaar362e1a32006-03-06 23:29:24 +00002011
2012 if (i < MAX_MCO) /* last composing char must be 0 */
2013 pcc[i] = 0;
2014
Bram Moolenaar071d4272004-06-13 20:20:40 +00002015 return c;
2016}
2017
2018/*
2019 * Convert the character at screen position "off" to a sequence of bytes.
2020 * Includes the composing characters.
Bram Moolenaar9a920d82012-06-01 15:21:02 +02002021 * "buf" must at least have the length MB_MAXBYTES + 1.
Bram Moolenaarfff2bee2010-05-15 13:56:02 +02002022 * Only to be used when ScreenLinesUC[off] != 0.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002023 * Returns the produced number of bytes.
2024 */
2025 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002026utfc_char2bytes(int off, char_u *buf)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002027{
2028 int len;
Bram Moolenaar362e1a32006-03-06 23:29:24 +00002029 int i;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002030
2031 len = utf_char2bytes(ScreenLinesUC[off], buf);
Bram Moolenaar362e1a32006-03-06 23:29:24 +00002032 for (i = 0; i < Screen_mco; ++i)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002033 {
Bram Moolenaar362e1a32006-03-06 23:29:24 +00002034 if (ScreenLinesC[i][off] == 0)
2035 break;
2036 len += utf_char2bytes(ScreenLinesC[i][off], buf + len);
Bram Moolenaar071d4272004-06-13 20:20:40 +00002037 }
2038 return len;
2039}
2040
2041/*
2042 * Get the length of a UTF-8 byte sequence, not including any following
2043 * composing characters.
2044 * Returns 0 for "".
2045 * Returns 1 for an illegal byte sequence.
2046 */
2047 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002048utf_ptr2len(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002049{
2050 int len;
2051 int i;
2052
2053 if (*p == NUL)
2054 return 0;
2055 len = utf8len_tab[*p];
2056 for (i = 1; i < len; ++i)
2057 if ((p[i] & 0xc0) != 0x80)
2058 return 1;
2059 return len;
2060}
2061
2062/*
2063 * Return length of UTF-8 character, obtained from the first byte.
2064 * "b" must be between 0 and 255!
Bram Moolenaar24397332009-12-02 14:02:39 +00002065 * Returns 1 for an invalid first byte value.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002066 */
2067 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002068utf_byte2len(int b)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002069{
2070 return utf8len_tab[b];
2071}
2072
2073/*
2074 * Get the length of UTF-8 byte sequence "p[size]". Does not include any
2075 * following composing characters.
2076 * Returns 1 for "".
Bram Moolenaarc048f672008-01-04 16:47:25 +00002077 * Returns 1 for an illegal byte sequence (also in incomplete byte seq.).
Bram Moolenaar071d4272004-06-13 20:20:40 +00002078 * Returns number > "size" for an incomplete byte sequence.
Bram Moolenaar24397332009-12-02 14:02:39 +00002079 * Never returns zero.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002080 */
2081 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002082utf_ptr2len_len(char_u *p, int size)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002083{
2084 int len;
2085 int i;
Bram Moolenaarc048f672008-01-04 16:47:25 +00002086 int m;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002087
Bram Moolenaar24397332009-12-02 14:02:39 +00002088 len = utf8len_tab[*p];
2089 if (len == 1)
2090 return 1; /* NUL, ascii or illegal lead byte */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002091 if (len > size)
Bram Moolenaarc048f672008-01-04 16:47:25 +00002092 m = size; /* incomplete byte sequence. */
Bram Moolenaar24397332009-12-02 14:02:39 +00002093 else
2094 m = len;
Bram Moolenaarc048f672008-01-04 16:47:25 +00002095 for (i = 1; i < m; ++i)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002096 if ((p[i] & 0xc0) != 0x80)
2097 return 1;
2098 return len;
2099}
2100
2101/*
2102 * Return the number of bytes the UTF-8 encoding of the character at "p" takes.
2103 * This includes following composing characters.
2104 */
2105 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002106utfc_ptr2len(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002107{
2108 int len;
Bram Moolenaarc669e662005-06-08 22:00:03 +00002109 int b0 = *p;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002110#ifdef FEAT_ARABIC
2111 int prevlen;
2112#endif
2113
Bram Moolenaarc669e662005-06-08 22:00:03 +00002114 if (b0 == NUL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002115 return 0;
Bram Moolenaarc669e662005-06-08 22:00:03 +00002116 if (b0 < 0x80 && p[1] < 0x80) /* be quick for ASCII */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002117 return 1;
2118
2119 /* Skip over first UTF-8 char, stopping at a NUL byte. */
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00002120 len = utf_ptr2len(p);
Bram Moolenaar071d4272004-06-13 20:20:40 +00002121
2122 /* Check for illegal byte. */
Bram Moolenaarc669e662005-06-08 22:00:03 +00002123 if (len == 1 && b0 >= 0x80)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002124 return 1;
2125
2126 /*
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002127 * Check for composing characters. We can handle only the first six, but
Bram Moolenaar071d4272004-06-13 20:20:40 +00002128 * skip all of them (otherwise the cursor would get stuck).
2129 */
2130#ifdef FEAT_ARABIC
2131 prevlen = 0;
2132#endif
2133 for (;;)
2134 {
2135 if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len))
2136 return len;
2137
2138 /* Skip over composing char */
2139#ifdef FEAT_ARABIC
2140 prevlen = len;
2141#endif
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00002142 len += utf_ptr2len(p + len);
Bram Moolenaar071d4272004-06-13 20:20:40 +00002143 }
2144}
2145
2146/*
2147 * Return the number of bytes the UTF-8 encoding of the character at "p[size]"
2148 * takes. This includes following composing characters.
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00002149 * Returns 0 for an empty string.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002150 * Returns 1 for an illegal char or an incomplete byte sequence.
2151 */
2152 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002153utfc_ptr2len_len(char_u *p, int size)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002154{
2155 int len;
2156#ifdef FEAT_ARABIC
2157 int prevlen;
2158#endif
2159
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00002160 if (size < 1 || *p == NUL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002161 return 0;
2162 if (p[0] < 0x80 && (size == 1 || p[1] < 0x80)) /* be quick for ASCII */
2163 return 1;
2164
2165 /* Skip over first UTF-8 char, stopping at a NUL byte. */
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00002166 len = utf_ptr2len_len(p, size);
Bram Moolenaar071d4272004-06-13 20:20:40 +00002167
2168 /* Check for illegal byte and incomplete byte sequence. */
2169 if ((len == 1 && p[0] >= 0x80) || len > size)
2170 return 1;
2171
2172 /*
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002173 * Check for composing characters. We can handle only the first six, but
Bram Moolenaar071d4272004-06-13 20:20:40 +00002174 * skip all of them (otherwise the cursor would get stuck).
2175 */
2176#ifdef FEAT_ARABIC
2177 prevlen = 0;
2178#endif
2179 while (len < size)
2180 {
Bram Moolenaar89bf0922008-06-29 14:16:06 +00002181 int len_next_char;
2182
2183 if (p[len] < 0x80)
2184 break;
2185
2186 /*
2187 * Next character length should not go beyond size to ensure that
2188 * UTF_COMPOSINGLIKE(...) does not read beyond size.
2189 */
2190 len_next_char = utf_ptr2len_len(p + len, size - len);
2191 if (len_next_char > size - len)
2192 break;
2193
2194 if (!UTF_COMPOSINGLIKE(p + prevlen, p + len))
Bram Moolenaar071d4272004-06-13 20:20:40 +00002195 break;
2196
2197 /* Skip over composing char */
2198#ifdef FEAT_ARABIC
2199 prevlen = len;
2200#endif
Bram Moolenaar89bf0922008-06-29 14:16:06 +00002201 len += len_next_char;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002202 }
2203 return len;
2204}
2205
2206/*
2207 * Return the number of bytes the UTF-8 encoding of character "c" takes.
2208 * This does not include composing characters.
2209 */
2210 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002211utf_char2len(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002212{
2213 if (c < 0x80)
2214 return 1;
2215 if (c < 0x800)
2216 return 2;
2217 if (c < 0x10000)
2218 return 3;
2219 if (c < 0x200000)
2220 return 4;
2221 if (c < 0x4000000)
2222 return 5;
2223 return 6;
2224}
2225
2226/*
2227 * Convert Unicode character "c" to UTF-8 string in "buf[]".
2228 * Returns the number of bytes.
2229 * This does not include composing characters.
2230 */
2231 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002232utf_char2bytes(int c, char_u *buf)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002233{
2234 if (c < 0x80) /* 7 bits */
2235 {
2236 buf[0] = c;
2237 return 1;
2238 }
2239 if (c < 0x800) /* 11 bits */
2240 {
2241 buf[0] = 0xc0 + ((unsigned)c >> 6);
2242 buf[1] = 0x80 + (c & 0x3f);
2243 return 2;
2244 }
2245 if (c < 0x10000) /* 16 bits */
2246 {
2247 buf[0] = 0xe0 + ((unsigned)c >> 12);
2248 buf[1] = 0x80 + (((unsigned)c >> 6) & 0x3f);
2249 buf[2] = 0x80 + (c & 0x3f);
2250 return 3;
2251 }
2252 if (c < 0x200000) /* 21 bits */
2253 {
2254 buf[0] = 0xf0 + ((unsigned)c >> 18);
2255 buf[1] = 0x80 + (((unsigned)c >> 12) & 0x3f);
2256 buf[2] = 0x80 + (((unsigned)c >> 6) & 0x3f);
2257 buf[3] = 0x80 + (c & 0x3f);
2258 return 4;
2259 }
2260 if (c < 0x4000000) /* 26 bits */
2261 {
2262 buf[0] = 0xf8 + ((unsigned)c >> 24);
2263 buf[1] = 0x80 + (((unsigned)c >> 18) & 0x3f);
2264 buf[2] = 0x80 + (((unsigned)c >> 12) & 0x3f);
2265 buf[3] = 0x80 + (((unsigned)c >> 6) & 0x3f);
2266 buf[4] = 0x80 + (c & 0x3f);
2267 return 5;
2268 }
2269 /* 31 bits */
2270 buf[0] = 0xfc + ((unsigned)c >> 30);
2271 buf[1] = 0x80 + (((unsigned)c >> 24) & 0x3f);
2272 buf[2] = 0x80 + (((unsigned)c >> 18) & 0x3f);
2273 buf[3] = 0x80 + (((unsigned)c >> 12) & 0x3f);
2274 buf[4] = 0x80 + (((unsigned)c >> 6) & 0x3f);
2275 buf[5] = 0x80 + (c & 0x3f);
2276 return 6;
2277}
2278
2279/*
2280 * Return TRUE if "c" is a composing UTF-8 character. This means it will be
2281 * drawn on top of the preceding character.
2282 * Based on code from Markus Kuhn.
2283 */
2284 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002285utf_iscomposing(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002286{
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002287 /* Sorted list of non-overlapping intervals.
2288 * Generated by ../runtime/tools/unicode.vim. */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002289 static struct interval combining[] =
2290 {
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002291 {0x0300, 0x036f},
2292 {0x0483, 0x0489},
2293 {0x0591, 0x05bd},
2294 {0x05bf, 0x05bf},
2295 {0x05c1, 0x05c2},
2296 {0x05c4, 0x05c5},
2297 {0x05c7, 0x05c7},
2298 {0x0610, 0x061a},
Bram Moolenaarea676722015-01-14 17:40:09 +01002299 {0x064b, 0x065f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002300 {0x0670, 0x0670},
2301 {0x06d6, 0x06dc},
Bram Moolenaarea676722015-01-14 17:40:09 +01002302 {0x06df, 0x06e4},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002303 {0x06e7, 0x06e8},
2304 {0x06ea, 0x06ed},
2305 {0x0711, 0x0711},
2306 {0x0730, 0x074a},
2307 {0x07a6, 0x07b0},
2308 {0x07eb, 0x07f3},
2309 {0x0816, 0x0819},
2310 {0x081b, 0x0823},
2311 {0x0825, 0x0827},
2312 {0x0829, 0x082d},
Bram Moolenaarea676722015-01-14 17:40:09 +01002313 {0x0859, 0x085b},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02002314 {0x08d4, 0x08e1},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002315 {0x08e3, 0x0903},
Bram Moolenaarea676722015-01-14 17:40:09 +01002316 {0x093a, 0x093c},
2317 {0x093e, 0x094f},
2318 {0x0951, 0x0957},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002319 {0x0962, 0x0963},
2320 {0x0981, 0x0983},
2321 {0x09bc, 0x09bc},
2322 {0x09be, 0x09c4},
2323 {0x09c7, 0x09c8},
2324 {0x09cb, 0x09cd},
2325 {0x09d7, 0x09d7},
2326 {0x09e2, 0x09e3},
2327 {0x0a01, 0x0a03},
2328 {0x0a3c, 0x0a3c},
2329 {0x0a3e, 0x0a42},
2330 {0x0a47, 0x0a48},
2331 {0x0a4b, 0x0a4d},
2332 {0x0a51, 0x0a51},
2333 {0x0a70, 0x0a71},
2334 {0x0a75, 0x0a75},
2335 {0x0a81, 0x0a83},
2336 {0x0abc, 0x0abc},
2337 {0x0abe, 0x0ac5},
2338 {0x0ac7, 0x0ac9},
2339 {0x0acb, 0x0acd},
2340 {0x0ae2, 0x0ae3},
2341 {0x0b01, 0x0b03},
2342 {0x0b3c, 0x0b3c},
2343 {0x0b3e, 0x0b44},
2344 {0x0b47, 0x0b48},
2345 {0x0b4b, 0x0b4d},
2346 {0x0b56, 0x0b57},
2347 {0x0b62, 0x0b63},
2348 {0x0b82, 0x0b82},
2349 {0x0bbe, 0x0bc2},
2350 {0x0bc6, 0x0bc8},
2351 {0x0bca, 0x0bcd},
2352 {0x0bd7, 0x0bd7},
Bram Moolenaarea676722015-01-14 17:40:09 +01002353 {0x0c00, 0x0c03},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002354 {0x0c3e, 0x0c44},
2355 {0x0c46, 0x0c48},
2356 {0x0c4a, 0x0c4d},
2357 {0x0c55, 0x0c56},
2358 {0x0c62, 0x0c63},
Bram Moolenaarea676722015-01-14 17:40:09 +01002359 {0x0c81, 0x0c83},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002360 {0x0cbc, 0x0cbc},
2361 {0x0cbe, 0x0cc4},
2362 {0x0cc6, 0x0cc8},
2363 {0x0cca, 0x0ccd},
2364 {0x0cd5, 0x0cd6},
2365 {0x0ce2, 0x0ce3},
Bram Moolenaarea676722015-01-14 17:40:09 +01002366 {0x0d01, 0x0d03},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002367 {0x0d3e, 0x0d44},
2368 {0x0d46, 0x0d48},
2369 {0x0d4a, 0x0d4d},
2370 {0x0d57, 0x0d57},
2371 {0x0d62, 0x0d63},
2372 {0x0d82, 0x0d83},
2373 {0x0dca, 0x0dca},
2374 {0x0dcf, 0x0dd4},
2375 {0x0dd6, 0x0dd6},
2376 {0x0dd8, 0x0ddf},
2377 {0x0df2, 0x0df3},
2378 {0x0e31, 0x0e31},
2379 {0x0e34, 0x0e3a},
2380 {0x0e47, 0x0e4e},
2381 {0x0eb1, 0x0eb1},
2382 {0x0eb4, 0x0eb9},
2383 {0x0ebb, 0x0ebc},
2384 {0x0ec8, 0x0ecd},
2385 {0x0f18, 0x0f19},
2386 {0x0f35, 0x0f35},
2387 {0x0f37, 0x0f37},
2388 {0x0f39, 0x0f39},
2389 {0x0f3e, 0x0f3f},
2390 {0x0f71, 0x0f84},
2391 {0x0f86, 0x0f87},
Bram Moolenaarea676722015-01-14 17:40:09 +01002392 {0x0f8d, 0x0f97},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002393 {0x0f99, 0x0fbc},
2394 {0x0fc6, 0x0fc6},
2395 {0x102b, 0x103e},
2396 {0x1056, 0x1059},
2397 {0x105e, 0x1060},
2398 {0x1062, 0x1064},
2399 {0x1067, 0x106d},
2400 {0x1071, 0x1074},
2401 {0x1082, 0x108d},
2402 {0x108f, 0x108f},
2403 {0x109a, 0x109d},
Bram Moolenaarea676722015-01-14 17:40:09 +01002404 {0x135d, 0x135f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002405 {0x1712, 0x1714},
2406 {0x1732, 0x1734},
2407 {0x1752, 0x1753},
2408 {0x1772, 0x1773},
Bram Moolenaarea676722015-01-14 17:40:09 +01002409 {0x17b4, 0x17d3},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002410 {0x17dd, 0x17dd},
2411 {0x180b, 0x180d},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02002412 {0x1885, 0x1886},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002413 {0x18a9, 0x18a9},
2414 {0x1920, 0x192b},
2415 {0x1930, 0x193b},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002416 {0x1a17, 0x1a1b},
2417 {0x1a55, 0x1a5e},
2418 {0x1a60, 0x1a7c},
2419 {0x1a7f, 0x1a7f},
Bram Moolenaarea676722015-01-14 17:40:09 +01002420 {0x1ab0, 0x1abe},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002421 {0x1b00, 0x1b04},
2422 {0x1b34, 0x1b44},
2423 {0x1b6b, 0x1b73},
2424 {0x1b80, 0x1b82},
Bram Moolenaarea676722015-01-14 17:40:09 +01002425 {0x1ba1, 0x1bad},
2426 {0x1be6, 0x1bf3},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002427 {0x1c24, 0x1c37},
2428 {0x1cd0, 0x1cd2},
2429 {0x1cd4, 0x1ce8},
2430 {0x1ced, 0x1ced},
Bram Moolenaarea676722015-01-14 17:40:09 +01002431 {0x1cf2, 0x1cf4},
2432 {0x1cf8, 0x1cf9},
2433 {0x1dc0, 0x1df5},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02002434 {0x1dfb, 0x1dff},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002435 {0x20d0, 0x20f0},
2436 {0x2cef, 0x2cf1},
Bram Moolenaarea676722015-01-14 17:40:09 +01002437 {0x2d7f, 0x2d7f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002438 {0x2de0, 0x2dff},
2439 {0x302a, 0x302f},
2440 {0x3099, 0x309a},
2441 {0xa66f, 0xa672},
Bram Moolenaarea676722015-01-14 17:40:09 +01002442 {0xa674, 0xa67d},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002443 {0xa69e, 0xa69f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002444 {0xa6f0, 0xa6f1},
2445 {0xa802, 0xa802},
2446 {0xa806, 0xa806},
2447 {0xa80b, 0xa80b},
2448 {0xa823, 0xa827},
2449 {0xa880, 0xa881},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02002450 {0xa8b4, 0xa8c5},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002451 {0xa8e0, 0xa8f1},
2452 {0xa926, 0xa92d},
2453 {0xa947, 0xa953},
2454 {0xa980, 0xa983},
2455 {0xa9b3, 0xa9c0},
Bram Moolenaarea676722015-01-14 17:40:09 +01002456 {0xa9e5, 0xa9e5},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002457 {0xaa29, 0xaa36},
2458 {0xaa43, 0xaa43},
2459 {0xaa4c, 0xaa4d},
Bram Moolenaarea676722015-01-14 17:40:09 +01002460 {0xaa7b, 0xaa7d},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002461 {0xaab0, 0xaab0},
2462 {0xaab2, 0xaab4},
2463 {0xaab7, 0xaab8},
2464 {0xaabe, 0xaabf},
2465 {0xaac1, 0xaac1},
Bram Moolenaarea676722015-01-14 17:40:09 +01002466 {0xaaeb, 0xaaef},
2467 {0xaaf5, 0xaaf6},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002468 {0xabe3, 0xabea},
2469 {0xabec, 0xabed},
2470 {0xfb1e, 0xfb1e},
2471 {0xfe00, 0xfe0f},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002472 {0xfe20, 0xfe2f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002473 {0x101fd, 0x101fd},
Bram Moolenaarea676722015-01-14 17:40:09 +01002474 {0x102e0, 0x102e0},
2475 {0x10376, 0x1037a},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002476 {0x10a01, 0x10a03},
2477 {0x10a05, 0x10a06},
2478 {0x10a0c, 0x10a0f},
2479 {0x10a38, 0x10a3a},
2480 {0x10a3f, 0x10a3f},
Bram Moolenaarea676722015-01-14 17:40:09 +01002481 {0x10ae5, 0x10ae6},
2482 {0x11000, 0x11002},
2483 {0x11038, 0x11046},
2484 {0x1107f, 0x11082},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002485 {0x110b0, 0x110ba},
Bram Moolenaarea676722015-01-14 17:40:09 +01002486 {0x11100, 0x11102},
2487 {0x11127, 0x11134},
2488 {0x11173, 0x11173},
2489 {0x11180, 0x11182},
2490 {0x111b3, 0x111c0},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002491 {0x111ca, 0x111cc},
Bram Moolenaarea676722015-01-14 17:40:09 +01002492 {0x1122c, 0x11237},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02002493 {0x1123e, 0x1123e},
Bram Moolenaarea676722015-01-14 17:40:09 +01002494 {0x112df, 0x112ea},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002495 {0x11300, 0x11303},
Bram Moolenaarea676722015-01-14 17:40:09 +01002496 {0x1133c, 0x1133c},
2497 {0x1133e, 0x11344},
2498 {0x11347, 0x11348},
2499 {0x1134b, 0x1134d},
2500 {0x11357, 0x11357},
2501 {0x11362, 0x11363},
2502 {0x11366, 0x1136c},
2503 {0x11370, 0x11374},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02002504 {0x11435, 0x11446},
Bram Moolenaarea676722015-01-14 17:40:09 +01002505 {0x114b0, 0x114c3},
2506 {0x115af, 0x115b5},
2507 {0x115b8, 0x115c0},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002508 {0x115dc, 0x115dd},
Bram Moolenaarea676722015-01-14 17:40:09 +01002509 {0x11630, 0x11640},
2510 {0x116ab, 0x116b7},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002511 {0x1171d, 0x1172b},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02002512 {0x11c2f, 0x11c36},
2513 {0x11c38, 0x11c3f},
2514 {0x11c92, 0x11ca7},
2515 {0x11ca9, 0x11cb6},
Bram Moolenaarea676722015-01-14 17:40:09 +01002516 {0x16af0, 0x16af4},
2517 {0x16b30, 0x16b36},
2518 {0x16f51, 0x16f7e},
2519 {0x16f8f, 0x16f92},
2520 {0x1bc9d, 0x1bc9e},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002521 {0x1d165, 0x1d169},
2522 {0x1d16d, 0x1d172},
2523 {0x1d17b, 0x1d182},
2524 {0x1d185, 0x1d18b},
2525 {0x1d1aa, 0x1d1ad},
2526 {0x1d242, 0x1d244},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002527 {0x1da00, 0x1da36},
2528 {0x1da3b, 0x1da6c},
2529 {0x1da75, 0x1da75},
2530 {0x1da84, 0x1da84},
2531 {0x1da9b, 0x1da9f},
2532 {0x1daa1, 0x1daaf},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02002533 {0x1e000, 0x1e006},
2534 {0x1e008, 0x1e018},
2535 {0x1e01b, 0x1e021},
2536 {0x1e023, 0x1e024},
2537 {0x1e026, 0x1e02a},
Bram Moolenaarea676722015-01-14 17:40:09 +01002538 {0x1e8d0, 0x1e8d6},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02002539 {0x1e944, 0x1e94a},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002540 {0xe0100, 0xe01ef}
Bram Moolenaar071d4272004-06-13 20:20:40 +00002541 };
2542
2543 return intable(combining, sizeof(combining), c);
2544}
2545
2546/*
2547 * Return TRUE for characters that can be displayed in a normal way.
2548 * Only for characters of 0x100 and above!
2549 */
2550 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002551utf_printable(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002552{
2553#ifdef USE_WCHAR_FUNCTIONS
2554 /*
2555 * Assume the iswprint() library function works better than our own stuff.
2556 */
2557 return iswprint(c);
2558#else
2559 /* Sorted list of non-overlapping intervals.
2560 * 0xd800-0xdfff is reserved for UTF-16, actually illegal. */
2561 static struct interval nonprint[] =
2562 {
2563 {0x070f, 0x070f}, {0x180b, 0x180e}, {0x200b, 0x200f}, {0x202a, 0x202e},
2564 {0x206a, 0x206f}, {0xd800, 0xdfff}, {0xfeff, 0xfeff}, {0xfff9, 0xfffb},
2565 {0xfffe, 0xffff}
2566 };
2567
2568 return !intable(nonprint, sizeof(nonprint), c);
2569#endif
2570}
2571
Bram Moolenaarcb070082016-04-02 22:14:51 +02002572/* Sorted list of non-overlapping intervals of all Emoji characters,
2573 * based on http://unicode.org/emoji/charts/emoji-list.html */
2574static struct interval emoji_all[] =
2575{
2576 {0x203c, 0x203c},
2577 {0x2049, 0x2049},
2578 {0x2122, 0x2122},
2579 {0x2139, 0x2139},
2580 {0x2194, 0x2199},
2581 {0x21a9, 0x21aa},
2582 {0x231a, 0x231b},
2583 {0x2328, 0x2328},
2584 {0x23cf, 0x23cf},
2585 {0x23e9, 0x23f3},
2586 {0x24c2, 0x24c2},
2587 {0x25aa, 0x25ab},
2588 {0x25b6, 0x25b6},
2589 {0x25c0, 0x25c0},
2590 {0x25fb, 0x25fe},
2591 {0x2600, 0x2604},
2592 {0x260e, 0x260e},
2593 {0x2611, 0x2611},
2594 {0x2614, 0x2615},
2595 {0x2618, 0x2618},
2596 {0x261d, 0x261d},
2597 {0x2620, 0x2620},
2598 {0x2622, 0x2623},
2599 {0x2626, 0x2626},
2600 {0x262a, 0x262a},
2601 {0x262e, 0x262f},
2602 {0x2638, 0x263a},
2603 {0x2648, 0x2653},
2604 {0x2660, 0x2660},
2605 {0x2663, 0x2663},
2606 {0x2665, 0x2666},
2607 {0x2668, 0x2668},
2608 {0x267b, 0x267b},
2609 {0x267f, 0x267f},
2610 {0x2692, 0x2694},
2611 {0x2696, 0x2697},
2612 {0x2699, 0x2699},
2613 {0x269b, 0x269c},
2614 {0x26a0, 0x26a1},
2615 {0x26aa, 0x26ab},
2616 {0x26b0, 0x26b1},
2617 {0x26bd, 0x26be},
2618 {0x26c4, 0x26c5},
2619 {0x26c8, 0x26c8},
2620 {0x26ce, 0x26cf},
2621 {0x26d1, 0x26d1},
2622 {0x26d3, 0x26d4},
2623 {0x26e9, 0x26ea},
2624 {0x26f0, 0x26f5},
2625 {0x26f7, 0x26fa},
2626 {0x26fd, 0x26fd},
2627 {0x2702, 0x2702},
2628 {0x2705, 0x2705},
2629 {0x2708, 0x270d},
2630 {0x270f, 0x270f},
2631 {0x2712, 0x2712},
2632 {0x2714, 0x2714},
2633 {0x2716, 0x2716},
2634 {0x271d, 0x271d},
2635 {0x2721, 0x2721},
2636 {0x2728, 0x2728},
2637 {0x2733, 0x2734},
2638 {0x2744, 0x2744},
2639 {0x2747, 0x2747},
2640 {0x274c, 0x274c},
2641 {0x274e, 0x274e},
2642 {0x2753, 0x2755},
2643 {0x2757, 0x2757},
2644 {0x2763, 0x2764},
2645 {0x2795, 0x2797},
2646 {0x27a1, 0x27a1},
2647 {0x27b0, 0x27b0},
2648 {0x27bf, 0x27bf},
2649 {0x2934, 0x2935},
2650 {0x2b05, 0x2b07},
2651 {0x2b1b, 0x2b1c},
2652 {0x2b50, 0x2b50},
2653 {0x2b55, 0x2b55},
2654 {0x3030, 0x3030},
2655 {0x303d, 0x303d},
2656 {0x3297, 0x3297},
2657 {0x3299, 0x3299},
2658 {0x1f004, 0x1f004},
2659 {0x1f0cf, 0x1f0cf},
2660 {0x1f170, 0x1f171},
2661 {0x1f17e, 0x1f17f},
2662 {0x1f18e, 0x1f18e},
2663 {0x1f191, 0x1f19a},
2664 {0x1f1e6, 0x1f1ff},
2665 {0x1f201, 0x1f202},
2666 {0x1f21a, 0x1f21a},
2667 {0x1f22f, 0x1f22f},
2668 {0x1f232, 0x1f23a},
2669 {0x1f250, 0x1f251},
2670 {0x1f300, 0x1f320},
2671 {0x1f330, 0x1f335},
2672 {0x1f337, 0x1f37c},
2673 {0x1f380, 0x1f393},
2674 {0x1f3a0, 0x1f3c4},
2675 {0x1f3c6, 0x1f3ca},
2676 {0x1f3e0, 0x1f3f0},
2677 {0x1f400, 0x1f43e},
2678 {0x1f440, 0x1f440},
2679 {0x1f442, 0x1f4f7},
2680 {0x1f4f9, 0x1f4fc},
2681 {0x1f500, 0x1f53d},
2682 {0x1f550, 0x1f567},
2683 {0x1f5fb, 0x1f640},
2684 {0x1f645, 0x1f64f},
2685 {0x1f680, 0x1f6c5}
2686};
2687
Bram Moolenaar071d4272004-06-13 20:20:40 +00002688/*
2689 * Get class of a Unicode character.
2690 * 0: white space
2691 * 1: punctuation
2692 * 2 or bigger: some class of word character.
2693 */
2694 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002695utf_class(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002696{
Bram Moolenaar4019cf92017-01-28 16:39:34 +01002697 return utf_class_buf(c, curbuf);
2698}
2699
2700 int
2701utf_class_buf(int c, buf_T *buf)
2702{
Bram Moolenaar071d4272004-06-13 20:20:40 +00002703 /* sorted list of non-overlapping intervals */
2704 static struct clinterval
2705 {
Bram Moolenaarcc63c642013-11-12 04:44:01 +01002706 unsigned int first;
2707 unsigned int last;
2708 unsigned int class;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002709 } classes[] =
2710 {
2711 {0x037e, 0x037e, 1}, /* Greek question mark */
2712 {0x0387, 0x0387, 1}, /* Greek ano teleia */
2713 {0x055a, 0x055f, 1}, /* Armenian punctuation */
2714 {0x0589, 0x0589, 1}, /* Armenian full stop */
2715 {0x05be, 0x05be, 1},
2716 {0x05c0, 0x05c0, 1},
2717 {0x05c3, 0x05c3, 1},
2718 {0x05f3, 0x05f4, 1},
2719 {0x060c, 0x060c, 1},
2720 {0x061b, 0x061b, 1},
2721 {0x061f, 0x061f, 1},
2722 {0x066a, 0x066d, 1},
2723 {0x06d4, 0x06d4, 1},
2724 {0x0700, 0x070d, 1}, /* Syriac punctuation */
2725 {0x0964, 0x0965, 1},
2726 {0x0970, 0x0970, 1},
2727 {0x0df4, 0x0df4, 1},
2728 {0x0e4f, 0x0e4f, 1},
2729 {0x0e5a, 0x0e5b, 1},
2730 {0x0f04, 0x0f12, 1},
2731 {0x0f3a, 0x0f3d, 1},
2732 {0x0f85, 0x0f85, 1},
2733 {0x104a, 0x104f, 1}, /* Myanmar punctuation */
2734 {0x10fb, 0x10fb, 1}, /* Georgian punctuation */
2735 {0x1361, 0x1368, 1}, /* Ethiopic punctuation */
2736 {0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
2737 {0x1680, 0x1680, 0},
2738 {0x169b, 0x169c, 1},
2739 {0x16eb, 0x16ed, 1},
2740 {0x1735, 0x1736, 1},
2741 {0x17d4, 0x17dc, 1}, /* Khmer punctuation */
2742 {0x1800, 0x180a, 1}, /* Mongolian punctuation */
2743 {0x2000, 0x200b, 0}, /* spaces */
2744 {0x200c, 0x2027, 1}, /* punctuation and symbols */
2745 {0x2028, 0x2029, 0},
2746 {0x202a, 0x202e, 1}, /* punctuation and symbols */
2747 {0x202f, 0x202f, 0},
2748 {0x2030, 0x205e, 1}, /* punctuation and symbols */
2749 {0x205f, 0x205f, 0},
2750 {0x2060, 0x27ff, 1}, /* punctuation and symbols */
2751 {0x2070, 0x207f, 0x2070}, /* superscript */
Bram Moolenaarbbb79722008-06-04 09:00:32 +00002752 {0x2080, 0x2094, 0x2080}, /* subscript */
2753 {0x20a0, 0x27ff, 1}, /* all kinds of symbols */
2754 {0x2800, 0x28ff, 0x2800}, /* braille */
2755 {0x2900, 0x2998, 1}, /* arrows, brackets, etc. */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002756 {0x29d8, 0x29db, 1},
2757 {0x29fc, 0x29fd, 1},
Bram Moolenaar103650d2014-09-15 14:25:54 +02002758 {0x2e00, 0x2e7f, 1}, /* supplemental punctuation */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002759 {0x3000, 0x3000, 0}, /* ideographic space */
2760 {0x3001, 0x3020, 1}, /* ideographic punctuation */
2761 {0x3030, 0x3030, 1},
2762 {0x303d, 0x303d, 1},
2763 {0x3040, 0x309f, 0x3040}, /* Hiragana */
2764 {0x30a0, 0x30ff, 0x30a0}, /* Katakana */
2765 {0x3300, 0x9fff, 0x4e00}, /* CJK Ideographs */
2766 {0xac00, 0xd7a3, 0xac00}, /* Hangul Syllables */
2767 {0xf900, 0xfaff, 0x4e00}, /* CJK Ideographs */
2768 {0xfd3e, 0xfd3f, 1},
2769 {0xfe30, 0xfe6b, 1}, /* punctuation forms */
2770 {0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
2771 {0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
2772 {0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
2773 {0xff5b, 0xff65, 1}, /* half/fullwidth ASCII */
Bram Moolenaarcc63c642013-11-12 04:44:01 +01002774 {0x20000, 0x2a6df, 0x4e00}, /* CJK Ideographs */
2775 {0x2a700, 0x2b73f, 0x4e00}, /* CJK Ideographs */
2776 {0x2b740, 0x2b81f, 0x4e00}, /* CJK Ideographs */
2777 {0x2f800, 0x2fa1f, 0x4e00}, /* CJK Ideographs */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002778 };
Bram Moolenaarb86f10e2016-03-21 22:09:44 +01002779
Bram Moolenaar071d4272004-06-13 20:20:40 +00002780 int bot = 0;
2781 int top = sizeof(classes) / sizeof(struct clinterval) - 1;
2782 int mid;
2783
2784 /* First quick check for Latin1 characters, use 'iskeyword'. */
2785 if (c < 0x100)
2786 {
Bram Moolenaarf7bbbc52005-06-17 21:55:00 +00002787 if (c == ' ' || c == '\t' || c == NUL || c == 0xa0)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002788 return 0; /* blank */
Bram Moolenaar4019cf92017-01-28 16:39:34 +01002789 if (vim_iswordc_buf(c, buf))
Bram Moolenaar071d4272004-06-13 20:20:40 +00002790 return 2; /* word character */
2791 return 1; /* punctuation */
2792 }
2793
2794 /* binary search in table */
2795 while (top >= bot)
2796 {
2797 mid = (bot + top) / 2;
Bram Moolenaarcc63c642013-11-12 04:44:01 +01002798 if (classes[mid].last < (unsigned int)c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002799 bot = mid + 1;
Bram Moolenaarcc63c642013-11-12 04:44:01 +01002800 else if (classes[mid].first > (unsigned int)c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002801 top = mid - 1;
2802 else
2803 return (int)classes[mid].class;
2804 }
2805
Bram Moolenaar4077b332016-03-20 18:15:21 +01002806 /* emoji */
Bram Moolenaarb86f10e2016-03-21 22:09:44 +01002807 if (intable(emoji_all, sizeof(emoji_all), c))
Bram Moolenaar4077b332016-03-20 18:15:21 +01002808 return 3;
2809
Bram Moolenaar071d4272004-06-13 20:20:40 +00002810 /* most other characters are "word" characters */
2811 return 2;
2812}
2813
Bram Moolenaarcb070082016-04-02 22:14:51 +02002814 int
2815utf_ambiguous_width(int c)
2816{
2817 return c >= 0x80 && (intable(ambiguous, sizeof(ambiguous), c)
2818 || intable(emoji_all, sizeof(emoji_all), c));
2819}
2820
Bram Moolenaar071d4272004-06-13 20:20:40 +00002821/*
2822 * Code for Unicode case-dependent operations. Based on notes in
2823 * http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
2824 * This code uses simple case folding, not full case folding.
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002825 * Last updated for Unicode 5.2.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002826 */
2827
2828/*
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002829 * The following tables are built by ../runtime/tools/unicode.vim.
2830 * They must be in numeric order, because we use binary search.
2831 * An entry such as {0x41,0x5a,1,32} means that Unicode characters in the
2832 * range from 0x41 to 0x5a inclusive, stepping by 1, are changed to
2833 * folded/upper/lower by adding 32.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002834 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002835typedef struct
2836{
2837 int rangeStart;
2838 int rangeEnd;
2839 int step;
2840 int offset;
2841} convertStruct;
2842
Bram Moolenaard6f676d2005-06-01 21:51:55 +00002843static convertStruct foldCase[] =
Bram Moolenaar071d4272004-06-13 20:20:40 +00002844{
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002845 {0x41,0x5a,1,32},
2846 {0xb5,0xb5,-1,775},
2847 {0xc0,0xd6,1,32},
2848 {0xd8,0xde,1,32},
2849 {0x100,0x12e,2,1},
2850 {0x132,0x136,2,1},
2851 {0x139,0x147,2,1},
2852 {0x14a,0x176,2,1},
2853 {0x178,0x178,-1,-121},
2854 {0x179,0x17d,2,1},
2855 {0x17f,0x17f,-1,-268},
2856 {0x181,0x181,-1,210},
2857 {0x182,0x184,2,1},
2858 {0x186,0x186,-1,206},
2859 {0x187,0x187,-1,1},
2860 {0x189,0x18a,1,205},
2861 {0x18b,0x18b,-1,1},
2862 {0x18e,0x18e,-1,79},
2863 {0x18f,0x18f,-1,202},
2864 {0x190,0x190,-1,203},
2865 {0x191,0x191,-1,1},
2866 {0x193,0x193,-1,205},
2867 {0x194,0x194,-1,207},
2868 {0x196,0x196,-1,211},
2869 {0x197,0x197,-1,209},
2870 {0x198,0x198,-1,1},
2871 {0x19c,0x19c,-1,211},
2872 {0x19d,0x19d,-1,213},
2873 {0x19f,0x19f,-1,214},
2874 {0x1a0,0x1a4,2,1},
2875 {0x1a6,0x1a6,-1,218},
2876 {0x1a7,0x1a7,-1,1},
2877 {0x1a9,0x1a9,-1,218},
2878 {0x1ac,0x1ac,-1,1},
2879 {0x1ae,0x1ae,-1,218},
2880 {0x1af,0x1af,-1,1},
2881 {0x1b1,0x1b2,1,217},
2882 {0x1b3,0x1b5,2,1},
2883 {0x1b7,0x1b7,-1,219},
2884 {0x1b8,0x1bc,4,1},
2885 {0x1c4,0x1c4,-1,2},
2886 {0x1c5,0x1c5,-1,1},
2887 {0x1c7,0x1c7,-1,2},
2888 {0x1c8,0x1c8,-1,1},
2889 {0x1ca,0x1ca,-1,2},
2890 {0x1cb,0x1db,2,1},
2891 {0x1de,0x1ee,2,1},
2892 {0x1f1,0x1f1,-1,2},
2893 {0x1f2,0x1f4,2,1},
2894 {0x1f6,0x1f6,-1,-97},
2895 {0x1f7,0x1f7,-1,-56},
2896 {0x1f8,0x21e,2,1},
2897 {0x220,0x220,-1,-130},
2898 {0x222,0x232,2,1},
2899 {0x23a,0x23a,-1,10795},
2900 {0x23b,0x23b,-1,1},
2901 {0x23d,0x23d,-1,-163},
2902 {0x23e,0x23e,-1,10792},
2903 {0x241,0x241,-1,1},
2904 {0x243,0x243,-1,-195},
2905 {0x244,0x244,-1,69},
2906 {0x245,0x245,-1,71},
2907 {0x246,0x24e,2,1},
2908 {0x345,0x345,-1,116},
2909 {0x370,0x372,2,1},
2910 {0x376,0x376,-1,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01002911 {0x37f,0x37f,-1,116},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002912 {0x386,0x386,-1,38},
2913 {0x388,0x38a,1,37},
2914 {0x38c,0x38c,-1,64},
2915 {0x38e,0x38f,1,63},
2916 {0x391,0x3a1,1,32},
2917 {0x3a3,0x3ab,1,32},
2918 {0x3c2,0x3c2,-1,1},
2919 {0x3cf,0x3cf,-1,8},
2920 {0x3d0,0x3d0,-1,-30},
2921 {0x3d1,0x3d1,-1,-25},
2922 {0x3d5,0x3d5,-1,-15},
2923 {0x3d6,0x3d6,-1,-22},
2924 {0x3d8,0x3ee,2,1},
2925 {0x3f0,0x3f0,-1,-54},
2926 {0x3f1,0x3f1,-1,-48},
2927 {0x3f4,0x3f4,-1,-60},
2928 {0x3f5,0x3f5,-1,-64},
2929 {0x3f7,0x3f7,-1,1},
2930 {0x3f9,0x3f9,-1,-7},
2931 {0x3fa,0x3fa,-1,1},
2932 {0x3fd,0x3ff,1,-130},
2933 {0x400,0x40f,1,80},
2934 {0x410,0x42f,1,32},
2935 {0x460,0x480,2,1},
2936 {0x48a,0x4be,2,1},
2937 {0x4c0,0x4c0,-1,15},
2938 {0x4c1,0x4cd,2,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01002939 {0x4d0,0x52e,2,1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002940 {0x531,0x556,1,48},
2941 {0x10a0,0x10c5,1,7264},
Bram Moolenaarea676722015-01-14 17:40:09 +01002942 {0x10c7,0x10cd,6,7264},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002943 {0x13f8,0x13fd,1,-8},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02002944 {0x1c80,0x1c80,-1,-6222},
2945 {0x1c81,0x1c81,-1,-6221},
2946 {0x1c82,0x1c82,-1,-6212},
2947 {0x1c83,0x1c84,1,-6210},
2948 {0x1c85,0x1c85,-1,-6211},
2949 {0x1c86,0x1c86,-1,-6204},
2950 {0x1c87,0x1c87,-1,-6180},
2951 {0x1c88,0x1c88,-1,35267},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002952 {0x1e00,0x1e94,2,1},
2953 {0x1e9b,0x1e9b,-1,-58},
2954 {0x1e9e,0x1e9e,-1,-7615},
2955 {0x1ea0,0x1efe,2,1},
2956 {0x1f08,0x1f0f,1,-8},
2957 {0x1f18,0x1f1d,1,-8},
2958 {0x1f28,0x1f2f,1,-8},
2959 {0x1f38,0x1f3f,1,-8},
2960 {0x1f48,0x1f4d,1,-8},
2961 {0x1f59,0x1f5f,2,-8},
2962 {0x1f68,0x1f6f,1,-8},
2963 {0x1f88,0x1f8f,1,-8},
2964 {0x1f98,0x1f9f,1,-8},
2965 {0x1fa8,0x1faf,1,-8},
2966 {0x1fb8,0x1fb9,1,-8},
2967 {0x1fba,0x1fbb,1,-74},
2968 {0x1fbc,0x1fbc,-1,-9},
2969 {0x1fbe,0x1fbe,-1,-7173},
2970 {0x1fc8,0x1fcb,1,-86},
2971 {0x1fcc,0x1fcc,-1,-9},
2972 {0x1fd8,0x1fd9,1,-8},
2973 {0x1fda,0x1fdb,1,-100},
2974 {0x1fe8,0x1fe9,1,-8},
2975 {0x1fea,0x1feb,1,-112},
2976 {0x1fec,0x1fec,-1,-7},
2977 {0x1ff8,0x1ff9,1,-128},
2978 {0x1ffa,0x1ffb,1,-126},
2979 {0x1ffc,0x1ffc,-1,-9},
2980 {0x2126,0x2126,-1,-7517},
2981 {0x212a,0x212a,-1,-8383},
2982 {0x212b,0x212b,-1,-8262},
2983 {0x2132,0x2132,-1,28},
2984 {0x2160,0x216f,1,16},
2985 {0x2183,0x2183,-1,1},
2986 {0x24b6,0x24cf,1,26},
2987 {0x2c00,0x2c2e,1,48},
2988 {0x2c60,0x2c60,-1,1},
2989 {0x2c62,0x2c62,-1,-10743},
2990 {0x2c63,0x2c63,-1,-3814},
2991 {0x2c64,0x2c64,-1,-10727},
2992 {0x2c67,0x2c6b,2,1},
2993 {0x2c6d,0x2c6d,-1,-10780},
2994 {0x2c6e,0x2c6e,-1,-10749},
2995 {0x2c6f,0x2c6f,-1,-10783},
2996 {0x2c70,0x2c70,-1,-10782},
2997 {0x2c72,0x2c75,3,1},
2998 {0x2c7e,0x2c7f,1,-10815},
2999 {0x2c80,0x2ce2,2,1},
3000 {0x2ceb,0x2ced,2,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003001 {0x2cf2,0xa640,31054,1},
3002 {0xa642,0xa66c,2,1},
3003 {0xa680,0xa69a,2,1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003004 {0xa722,0xa72e,2,1},
3005 {0xa732,0xa76e,2,1},
3006 {0xa779,0xa77b,2,1},
3007 {0xa77d,0xa77d,-1,-35332},
3008 {0xa77e,0xa786,2,1},
3009 {0xa78b,0xa78b,-1,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003010 {0xa78d,0xa78d,-1,-42280},
3011 {0xa790,0xa792,2,1},
3012 {0xa796,0xa7a8,2,1},
3013 {0xa7aa,0xa7aa,-1,-42308},
3014 {0xa7ab,0xa7ab,-1,-42319},
3015 {0xa7ac,0xa7ac,-1,-42315},
3016 {0xa7ad,0xa7ad,-1,-42305},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02003017 {0xa7ae,0xa7ae,-1,-42308},
Bram Moolenaarea676722015-01-14 17:40:09 +01003018 {0xa7b0,0xa7b0,-1,-42258},
3019 {0xa7b1,0xa7b1,-1,-42282},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003020 {0xa7b2,0xa7b2,-1,-42261},
3021 {0xa7b3,0xa7b3,-1,928},
3022 {0xa7b4,0xa7b6,2,1},
3023 {0xab70,0xabbf,1,-38864},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003024 {0xff21,0xff3a,1,32},
Bram Moolenaarea676722015-01-14 17:40:09 +01003025 {0x10400,0x10427,1,40},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02003026 {0x104b0,0x104d3,1,40},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003027 {0x10c80,0x10cb2,1,64},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02003028 {0x118a0,0x118bf,1,32},
3029 {0x1e900,0x1e921,1,34}
Bram Moolenaar071d4272004-06-13 20:20:40 +00003030};
3031
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +01003032static int utf_convert(int a, convertStruct table[], int tableSize);
3033static int utf_strnicmp(char_u *s1, char_u *s2, size_t n1, size_t n2);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003034
3035/*
3036 * Generic conversion function for case operations.
3037 * Return the converted equivalent of "a", which is a UCS-4 character. Use
3038 * the given conversion "table". Uses binary search on "table".
3039 */
3040 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003041utf_convert(
3042 int a,
3043 convertStruct table[],
3044 int tableSize)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003045{
3046 int start, mid, end; /* indices into table */
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003047 int entries = tableSize / sizeof(convertStruct);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003048
3049 start = 0;
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003050 end = entries;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003051 while (start < end)
3052 {
3053 /* need to search further */
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003054 mid = (end + start) / 2;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003055 if (table[mid].rangeEnd < a)
3056 start = mid + 1;
3057 else
3058 end = mid;
3059 }
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003060 if (start < entries
3061 && table[start].rangeStart <= a
3062 && a <= table[start].rangeEnd
Bram Moolenaar071d4272004-06-13 20:20:40 +00003063 && (a - table[start].rangeStart) % table[start].step == 0)
3064 return (a + table[start].offset);
3065 else
3066 return a;
3067}
3068
3069/*
3070 * Return the folded-case equivalent of "a", which is a UCS-4 character. Uses
3071 * simple case folding.
3072 */
3073 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003074utf_fold(int a)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003075{
Bram Moolenaarc4a927c2016-07-10 18:24:27 +02003076 if (a < 0x80)
3077 /* be fast for ASCII */
3078 return a >= 0x41 && a <= 0x5a ? a + 32 : a;
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003079 return utf_convert(a, foldCase, (int)sizeof(foldCase));
Bram Moolenaar071d4272004-06-13 20:20:40 +00003080}
3081
Bram Moolenaard6f676d2005-06-01 21:51:55 +00003082static convertStruct toLower[] =
Bram Moolenaar071d4272004-06-13 20:20:40 +00003083{
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003084 {0x41,0x5a,1,32},
3085 {0xc0,0xd6,1,32},
3086 {0xd8,0xde,1,32},
3087 {0x100,0x12e,2,1},
3088 {0x130,0x130,-1,-199},
3089 {0x132,0x136,2,1},
3090 {0x139,0x147,2,1},
3091 {0x14a,0x176,2,1},
3092 {0x178,0x178,-1,-121},
3093 {0x179,0x17d,2,1},
3094 {0x181,0x181,-1,210},
3095 {0x182,0x184,2,1},
3096 {0x186,0x186,-1,206},
3097 {0x187,0x187,-1,1},
3098 {0x189,0x18a,1,205},
3099 {0x18b,0x18b,-1,1},
3100 {0x18e,0x18e,-1,79},
3101 {0x18f,0x18f,-1,202},
3102 {0x190,0x190,-1,203},
3103 {0x191,0x191,-1,1},
3104 {0x193,0x193,-1,205},
3105 {0x194,0x194,-1,207},
3106 {0x196,0x196,-1,211},
3107 {0x197,0x197,-1,209},
3108 {0x198,0x198,-1,1},
3109 {0x19c,0x19c,-1,211},
3110 {0x19d,0x19d,-1,213},
3111 {0x19f,0x19f,-1,214},
3112 {0x1a0,0x1a4,2,1},
3113 {0x1a6,0x1a6,-1,218},
3114 {0x1a7,0x1a7,-1,1},
3115 {0x1a9,0x1a9,-1,218},
3116 {0x1ac,0x1ac,-1,1},
3117 {0x1ae,0x1ae,-1,218},
3118 {0x1af,0x1af,-1,1},
3119 {0x1b1,0x1b2,1,217},
3120 {0x1b3,0x1b5,2,1},
3121 {0x1b7,0x1b7,-1,219},
3122 {0x1b8,0x1bc,4,1},
3123 {0x1c4,0x1c4,-1,2},
3124 {0x1c5,0x1c5,-1,1},
3125 {0x1c7,0x1c7,-1,2},
3126 {0x1c8,0x1c8,-1,1},
3127 {0x1ca,0x1ca,-1,2},
3128 {0x1cb,0x1db,2,1},
3129 {0x1de,0x1ee,2,1},
3130 {0x1f1,0x1f1,-1,2},
3131 {0x1f2,0x1f4,2,1},
3132 {0x1f6,0x1f6,-1,-97},
3133 {0x1f7,0x1f7,-1,-56},
3134 {0x1f8,0x21e,2,1},
3135 {0x220,0x220,-1,-130},
3136 {0x222,0x232,2,1},
3137 {0x23a,0x23a,-1,10795},
3138 {0x23b,0x23b,-1,1},
3139 {0x23d,0x23d,-1,-163},
3140 {0x23e,0x23e,-1,10792},
3141 {0x241,0x241,-1,1},
3142 {0x243,0x243,-1,-195},
3143 {0x244,0x244,-1,69},
3144 {0x245,0x245,-1,71},
3145 {0x246,0x24e,2,1},
3146 {0x370,0x372,2,1},
3147 {0x376,0x376,-1,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003148 {0x37f,0x37f,-1,116},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003149 {0x386,0x386,-1,38},
3150 {0x388,0x38a,1,37},
3151 {0x38c,0x38c,-1,64},
3152 {0x38e,0x38f,1,63},
3153 {0x391,0x3a1,1,32},
3154 {0x3a3,0x3ab,1,32},
3155 {0x3cf,0x3cf,-1,8},
3156 {0x3d8,0x3ee,2,1},
3157 {0x3f4,0x3f4,-1,-60},
3158 {0x3f7,0x3f7,-1,1},
3159 {0x3f9,0x3f9,-1,-7},
3160 {0x3fa,0x3fa,-1,1},
3161 {0x3fd,0x3ff,1,-130},
3162 {0x400,0x40f,1,80},
3163 {0x410,0x42f,1,32},
3164 {0x460,0x480,2,1},
3165 {0x48a,0x4be,2,1},
3166 {0x4c0,0x4c0,-1,15},
3167 {0x4c1,0x4cd,2,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003168 {0x4d0,0x52e,2,1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003169 {0x531,0x556,1,48},
3170 {0x10a0,0x10c5,1,7264},
Bram Moolenaarea676722015-01-14 17:40:09 +01003171 {0x10c7,0x10cd,6,7264},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003172 {0x13a0,0x13ef,1,38864},
3173 {0x13f0,0x13f5,1,8},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003174 {0x1e00,0x1e94,2,1},
3175 {0x1e9e,0x1e9e,-1,-7615},
3176 {0x1ea0,0x1efe,2,1},
3177 {0x1f08,0x1f0f,1,-8},
3178 {0x1f18,0x1f1d,1,-8},
3179 {0x1f28,0x1f2f,1,-8},
3180 {0x1f38,0x1f3f,1,-8},
3181 {0x1f48,0x1f4d,1,-8},
3182 {0x1f59,0x1f5f,2,-8},
3183 {0x1f68,0x1f6f,1,-8},
3184 {0x1f88,0x1f8f,1,-8},
3185 {0x1f98,0x1f9f,1,-8},
3186 {0x1fa8,0x1faf,1,-8},
3187 {0x1fb8,0x1fb9,1,-8},
3188 {0x1fba,0x1fbb,1,-74},
3189 {0x1fbc,0x1fbc,-1,-9},
3190 {0x1fc8,0x1fcb,1,-86},
3191 {0x1fcc,0x1fcc,-1,-9},
3192 {0x1fd8,0x1fd9,1,-8},
3193 {0x1fda,0x1fdb,1,-100},
3194 {0x1fe8,0x1fe9,1,-8},
3195 {0x1fea,0x1feb,1,-112},
3196 {0x1fec,0x1fec,-1,-7},
3197 {0x1ff8,0x1ff9,1,-128},
3198 {0x1ffa,0x1ffb,1,-126},
3199 {0x1ffc,0x1ffc,-1,-9},
3200 {0x2126,0x2126,-1,-7517},
3201 {0x212a,0x212a,-1,-8383},
3202 {0x212b,0x212b,-1,-8262},
3203 {0x2132,0x2132,-1,28},
3204 {0x2160,0x216f,1,16},
3205 {0x2183,0x2183,-1,1},
3206 {0x24b6,0x24cf,1,26},
3207 {0x2c00,0x2c2e,1,48},
3208 {0x2c60,0x2c60,-1,1},
3209 {0x2c62,0x2c62,-1,-10743},
3210 {0x2c63,0x2c63,-1,-3814},
3211 {0x2c64,0x2c64,-1,-10727},
3212 {0x2c67,0x2c6b,2,1},
3213 {0x2c6d,0x2c6d,-1,-10780},
3214 {0x2c6e,0x2c6e,-1,-10749},
3215 {0x2c6f,0x2c6f,-1,-10783},
3216 {0x2c70,0x2c70,-1,-10782},
3217 {0x2c72,0x2c75,3,1},
3218 {0x2c7e,0x2c7f,1,-10815},
3219 {0x2c80,0x2ce2,2,1},
3220 {0x2ceb,0x2ced,2,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003221 {0x2cf2,0xa640,31054,1},
3222 {0xa642,0xa66c,2,1},
3223 {0xa680,0xa69a,2,1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003224 {0xa722,0xa72e,2,1},
3225 {0xa732,0xa76e,2,1},
3226 {0xa779,0xa77b,2,1},
3227 {0xa77d,0xa77d,-1,-35332},
3228 {0xa77e,0xa786,2,1},
3229 {0xa78b,0xa78b,-1,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003230 {0xa78d,0xa78d,-1,-42280},
3231 {0xa790,0xa792,2,1},
3232 {0xa796,0xa7a8,2,1},
3233 {0xa7aa,0xa7aa,-1,-42308},
3234 {0xa7ab,0xa7ab,-1,-42319},
3235 {0xa7ac,0xa7ac,-1,-42315},
3236 {0xa7ad,0xa7ad,-1,-42305},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02003237 {0xa7ae,0xa7ae,-1,-42308},
Bram Moolenaarea676722015-01-14 17:40:09 +01003238 {0xa7b0,0xa7b0,-1,-42258},
3239 {0xa7b1,0xa7b1,-1,-42282},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003240 {0xa7b2,0xa7b2,-1,-42261},
3241 {0xa7b3,0xa7b3,-1,928},
3242 {0xa7b4,0xa7b6,2,1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003243 {0xff21,0xff3a,1,32},
Bram Moolenaarea676722015-01-14 17:40:09 +01003244 {0x10400,0x10427,1,40},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02003245 {0x104b0,0x104d3,1,40},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003246 {0x10c80,0x10cb2,1,64},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02003247 {0x118a0,0x118bf,1,32},
3248 {0x1e900,0x1e921,1,34}
Bram Moolenaar071d4272004-06-13 20:20:40 +00003249};
3250
Bram Moolenaard6f676d2005-06-01 21:51:55 +00003251static convertStruct toUpper[] =
Bram Moolenaar071d4272004-06-13 20:20:40 +00003252{
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003253 {0x61,0x7a,1,-32},
3254 {0xb5,0xb5,-1,743},
Bram Moolenaarea676722015-01-14 17:40:09 +01003255 {0xe0,0xf6,1,-32},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003256 {0xf8,0xfe,1,-32},
3257 {0xff,0xff,-1,121},
3258 {0x101,0x12f,2,-1},
3259 {0x131,0x131,-1,-232},
3260 {0x133,0x137,2,-1},
3261 {0x13a,0x148,2,-1},
3262 {0x14b,0x177,2,-1},
3263 {0x17a,0x17e,2,-1},
3264 {0x17f,0x17f,-1,-300},
3265 {0x180,0x180,-1,195},
3266 {0x183,0x185,2,-1},
3267 {0x188,0x18c,4,-1},
3268 {0x192,0x192,-1,-1},
3269 {0x195,0x195,-1,97},
3270 {0x199,0x199,-1,-1},
3271 {0x19a,0x19a,-1,163},
3272 {0x19e,0x19e,-1,130},
3273 {0x1a1,0x1a5,2,-1},
3274 {0x1a8,0x1ad,5,-1},
3275 {0x1b0,0x1b4,4,-1},
3276 {0x1b6,0x1b9,3,-1},
3277 {0x1bd,0x1bd,-1,-1},
3278 {0x1bf,0x1bf,-1,56},
3279 {0x1c5,0x1c5,-1,-1},
3280 {0x1c6,0x1c6,-1,-2},
3281 {0x1c8,0x1c8,-1,-1},
3282 {0x1c9,0x1c9,-1,-2},
3283 {0x1cb,0x1cb,-1,-1},
3284 {0x1cc,0x1cc,-1,-2},
3285 {0x1ce,0x1dc,2,-1},
3286 {0x1dd,0x1dd,-1,-79},
3287 {0x1df,0x1ef,2,-1},
3288 {0x1f2,0x1f2,-1,-1},
3289 {0x1f3,0x1f3,-1,-2},
3290 {0x1f5,0x1f9,4,-1},
3291 {0x1fb,0x21f,2,-1},
3292 {0x223,0x233,2,-1},
3293 {0x23c,0x23c,-1,-1},
3294 {0x23f,0x240,1,10815},
3295 {0x242,0x247,5,-1},
3296 {0x249,0x24f,2,-1},
3297 {0x250,0x250,-1,10783},
3298 {0x251,0x251,-1,10780},
3299 {0x252,0x252,-1,10782},
3300 {0x253,0x253,-1,-210},
3301 {0x254,0x254,-1,-206},
3302 {0x256,0x257,1,-205},
3303 {0x259,0x259,-1,-202},
3304 {0x25b,0x25b,-1,-203},
Bram Moolenaarea676722015-01-14 17:40:09 +01003305 {0x25c,0x25c,-1,42319},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003306 {0x260,0x260,-1,-205},
Bram Moolenaarea676722015-01-14 17:40:09 +01003307 {0x261,0x261,-1,42315},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003308 {0x263,0x263,-1,-207},
Bram Moolenaarea676722015-01-14 17:40:09 +01003309 {0x265,0x265,-1,42280},
3310 {0x266,0x266,-1,42308},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003311 {0x268,0x268,-1,-209},
3312 {0x269,0x269,-1,-211},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02003313 {0x26a,0x26a,-1,42308},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003314 {0x26b,0x26b,-1,10743},
Bram Moolenaarea676722015-01-14 17:40:09 +01003315 {0x26c,0x26c,-1,42305},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003316 {0x26f,0x26f,-1,-211},
3317 {0x271,0x271,-1,10749},
3318 {0x272,0x272,-1,-213},
3319 {0x275,0x275,-1,-214},
3320 {0x27d,0x27d,-1,10727},
3321 {0x280,0x283,3,-218},
Bram Moolenaarea676722015-01-14 17:40:09 +01003322 {0x287,0x287,-1,42282},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003323 {0x288,0x288,-1,-218},
3324 {0x289,0x289,-1,-69},
3325 {0x28a,0x28b,1,-217},
3326 {0x28c,0x28c,-1,-71},
3327 {0x292,0x292,-1,-219},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003328 {0x29d,0x29d,-1,42261},
Bram Moolenaarea676722015-01-14 17:40:09 +01003329 {0x29e,0x29e,-1,42258},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003330 {0x345,0x345,-1,84},
3331 {0x371,0x373,2,-1},
3332 {0x377,0x377,-1,-1},
3333 {0x37b,0x37d,1,130},
3334 {0x3ac,0x3ac,-1,-38},
3335 {0x3ad,0x3af,1,-37},
3336 {0x3b1,0x3c1,1,-32},
3337 {0x3c2,0x3c2,-1,-31},
3338 {0x3c3,0x3cb,1,-32},
3339 {0x3cc,0x3cc,-1,-64},
3340 {0x3cd,0x3ce,1,-63},
3341 {0x3d0,0x3d0,-1,-62},
3342 {0x3d1,0x3d1,-1,-57},
3343 {0x3d5,0x3d5,-1,-47},
3344 {0x3d6,0x3d6,-1,-54},
3345 {0x3d7,0x3d7,-1,-8},
3346 {0x3d9,0x3ef,2,-1},
3347 {0x3f0,0x3f0,-1,-86},
3348 {0x3f1,0x3f1,-1,-80},
3349 {0x3f2,0x3f2,-1,7},
Bram Moolenaarea676722015-01-14 17:40:09 +01003350 {0x3f3,0x3f3,-1,-116},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003351 {0x3f5,0x3f5,-1,-96},
3352 {0x3f8,0x3fb,3,-1},
3353 {0x430,0x44f,1,-32},
3354 {0x450,0x45f,1,-80},
3355 {0x461,0x481,2,-1},
3356 {0x48b,0x4bf,2,-1},
3357 {0x4c2,0x4ce,2,-1},
3358 {0x4cf,0x4cf,-1,-15},
Bram Moolenaarea676722015-01-14 17:40:09 +01003359 {0x4d1,0x52f,2,-1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003360 {0x561,0x586,1,-48},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003361 {0x13f8,0x13fd,1,-8},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02003362 {0x1c80,0x1c80,-1,-6254},
3363 {0x1c81,0x1c81,-1,-6253},
3364 {0x1c82,0x1c82,-1,-6244},
3365 {0x1c83,0x1c84,1,-6242},
3366 {0x1c85,0x1c85,-1,-6243},
3367 {0x1c86,0x1c86,-1,-6236},
3368 {0x1c87,0x1c87,-1,-6181},
3369 {0x1c88,0x1c88,-1,35266},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003370 {0x1d79,0x1d79,-1,35332},
3371 {0x1d7d,0x1d7d,-1,3814},
3372 {0x1e01,0x1e95,2,-1},
3373 {0x1e9b,0x1e9b,-1,-59},
3374 {0x1ea1,0x1eff,2,-1},
3375 {0x1f00,0x1f07,1,8},
3376 {0x1f10,0x1f15,1,8},
3377 {0x1f20,0x1f27,1,8},
3378 {0x1f30,0x1f37,1,8},
3379 {0x1f40,0x1f45,1,8},
3380 {0x1f51,0x1f57,2,8},
3381 {0x1f60,0x1f67,1,8},
3382 {0x1f70,0x1f71,1,74},
3383 {0x1f72,0x1f75,1,86},
3384 {0x1f76,0x1f77,1,100},
3385 {0x1f78,0x1f79,1,128},
3386 {0x1f7a,0x1f7b,1,112},
3387 {0x1f7c,0x1f7d,1,126},
3388 {0x1f80,0x1f87,1,8},
3389 {0x1f90,0x1f97,1,8},
3390 {0x1fa0,0x1fa7,1,8},
3391 {0x1fb0,0x1fb1,1,8},
3392 {0x1fb3,0x1fb3,-1,9},
3393 {0x1fbe,0x1fbe,-1,-7205},
3394 {0x1fc3,0x1fc3,-1,9},
3395 {0x1fd0,0x1fd1,1,8},
3396 {0x1fe0,0x1fe1,1,8},
3397 {0x1fe5,0x1fe5,-1,7},
3398 {0x1ff3,0x1ff3,-1,9},
3399 {0x214e,0x214e,-1,-28},
3400 {0x2170,0x217f,1,-16},
3401 {0x2184,0x2184,-1,-1},
3402 {0x24d0,0x24e9,1,-26},
3403 {0x2c30,0x2c5e,1,-48},
3404 {0x2c61,0x2c61,-1,-1},
3405 {0x2c65,0x2c65,-1,-10795},
3406 {0x2c66,0x2c66,-1,-10792},
3407 {0x2c68,0x2c6c,2,-1},
3408 {0x2c73,0x2c76,3,-1},
3409 {0x2c81,0x2ce3,2,-1},
3410 {0x2cec,0x2cee,2,-1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003411 {0x2cf3,0x2cf3,-1,-1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003412 {0x2d00,0x2d25,1,-7264},
Bram Moolenaarea676722015-01-14 17:40:09 +01003413 {0x2d27,0x2d2d,6,-7264},
3414 {0xa641,0xa66d,2,-1},
3415 {0xa681,0xa69b,2,-1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003416 {0xa723,0xa72f,2,-1},
3417 {0xa733,0xa76f,2,-1},
3418 {0xa77a,0xa77c,2,-1},
3419 {0xa77f,0xa787,2,-1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003420 {0xa78c,0xa791,5,-1},
3421 {0xa793,0xa797,4,-1},
3422 {0xa799,0xa7a9,2,-1},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003423 {0xa7b5,0xa7b7,2,-1},
3424 {0xab53,0xab53,-1,-928},
3425 {0xab70,0xabbf,1,-38864},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003426 {0xff41,0xff5a,1,-32},
Bram Moolenaarea676722015-01-14 17:40:09 +01003427 {0x10428,0x1044f,1,-40},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02003428 {0x104d8,0x104fb,1,-40},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003429 {0x10cc0,0x10cf2,1,-64},
Bram Moolenaar04e2b4b2016-06-26 17:53:07 +02003430 {0x118c0,0x118df,1,-32},
3431 {0x1e922,0x1e943,1,-34}
Bram Moolenaar071d4272004-06-13 20:20:40 +00003432};
Bram Moolenaard63aff02016-03-21 22:15:30 +01003433
Bram Moolenaar071d4272004-06-13 20:20:40 +00003434/*
3435 * Return the upper-case equivalent of "a", which is a UCS-4 character. Use
3436 * simple case folding.
3437 */
3438 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003439utf_toupper(int a)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003440{
3441 /* If 'casemap' contains "keepascii" use ASCII style toupper(). */
3442 if (a < 128 && (cmp_flags & CMP_KEEPASCII))
3443 return TOUPPER_ASC(a);
3444
Bram Moolenaarc9b4b052006-04-30 18:54:39 +00003445#if defined(HAVE_TOWUPPER) && defined(__STDC_ISO_10646__)
3446 /* If towupper() is available and handles Unicode, use it. */
Bram Moolenaar071d4272004-06-13 20:20:40 +00003447 if (!(cmp_flags & CMP_INTERNAL))
3448 return towupper(a);
3449#endif
3450
3451 /* For characters below 128 use locale sensitive toupper(). */
3452 if (a < 128)
3453 return TOUPPER_LOC(a);
3454
3455 /* For any other characters use the above mapping table. */
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003456 return utf_convert(a, toUpper, (int)sizeof(toUpper));
Bram Moolenaar071d4272004-06-13 20:20:40 +00003457}
3458
3459 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003460utf_islower(int a)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003461{
Bram Moolenaar88178de2012-06-01 17:46:59 +02003462 /* German sharp s is lower case but has no upper case equivalent. */
3463 return (utf_toupper(a) != a) || a == 0xdf;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003464}
3465
3466/*
3467 * Return the lower-case equivalent of "a", which is a UCS-4 character. Use
3468 * simple case folding.
3469 */
3470 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003471utf_tolower(int a)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003472{
3473 /* If 'casemap' contains "keepascii" use ASCII style tolower(). */
3474 if (a < 128 && (cmp_flags & CMP_KEEPASCII))
3475 return TOLOWER_ASC(a);
3476
Bram Moolenaarc9b4b052006-04-30 18:54:39 +00003477#if defined(HAVE_TOWLOWER) && defined(__STDC_ISO_10646__)
Bram Moolenaar8fcc0f72005-04-23 20:45:11 +00003478 /* If towlower() is available and handles Unicode, use it. */
Bram Moolenaar071d4272004-06-13 20:20:40 +00003479 if (!(cmp_flags & CMP_INTERNAL))
3480 return towlower(a);
3481#endif
3482
3483 /* For characters below 128 use locale sensitive tolower(). */
3484 if (a < 128)
3485 return TOLOWER_LOC(a);
3486
3487 /* For any other characters use the above mapping table. */
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003488 return utf_convert(a, toLower, (int)sizeof(toLower));
Bram Moolenaar071d4272004-06-13 20:20:40 +00003489}
3490
3491 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003492utf_isupper(int a)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003493{
3494 return (utf_tolower(a) != a);
3495}
3496
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003497 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003498utf_strnicmp(
3499 char_u *s1,
3500 char_u *s2,
3501 size_t n1,
3502 size_t n2)
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003503{
3504 int c1, c2, cdiff;
3505 char_u buffer[6];
3506
3507 for (;;)
3508 {
3509 c1 = utf_safe_read_char_adv(&s1, &n1);
3510 c2 = utf_safe_read_char_adv(&s2, &n2);
3511
3512 if (c1 <= 0 || c2 <= 0)
3513 break;
3514
3515 if (c1 == c2)
3516 continue;
3517
3518 cdiff = utf_fold(c1) - utf_fold(c2);
3519 if (cdiff != 0)
3520 return cdiff;
3521 }
3522
3523 /* some string ended or has an incomplete/illegal character sequence */
3524
3525 if (c1 == 0 || c2 == 0)
3526 {
3527 /* some string ended. shorter string is smaller */
3528 if (c1 == 0 && c2 == 0)
3529 return 0;
3530 return c1 == 0 ? -1 : 1;
3531 }
3532
3533 /* Continue with bytewise comparison to produce some result that
3534 * would make comparison operations involving this function transitive.
3535 *
3536 * If only one string had an error, comparison should be made with
3537 * folded version of the other string. In this case it is enough
3538 * to fold just one character to determine the result of comparison. */
3539
3540 if (c1 != -1 && c2 == -1)
3541 {
3542 n1 = utf_char2bytes(utf_fold(c1), buffer);
3543 s1 = buffer;
3544 }
3545 else if (c2 != -1 && c1 == -1)
3546 {
3547 n2 = utf_char2bytes(utf_fold(c2), buffer);
3548 s2 = buffer;
3549 }
3550
3551 while (n1 > 0 && n2 > 0 && *s1 != NUL && *s2 != NUL)
3552 {
3553 cdiff = (int)(*s1) - (int)(*s2);
3554 if (cdiff != 0)
3555 return cdiff;
3556
3557 s1++;
3558 s2++;
3559 n1--;
3560 n2--;
3561 }
3562
3563 if (n1 > 0 && *s1 == NUL)
3564 n1 = 0;
3565 if (n2 > 0 && *s2 == NUL)
3566 n2 = 0;
3567
3568 if (n1 == 0 && n2 == 0)
3569 return 0;
3570 return n1 == 0 ? -1 : 1;
3571}
3572
Bram Moolenaar071d4272004-06-13 20:20:40 +00003573/*
3574 * Version of strnicmp() that handles multi-byte characters.
Bram Moolenaar8fae8e62013-01-17 14:39:47 +01003575 * Needed for Big5, Shift-JIS and UTF-8 encoding. Other DBCS encodings can
Bram Moolenaar071d4272004-06-13 20:20:40 +00003576 * probably use strnicmp(), because there are no ASCII characters in the
3577 * second byte.
3578 * Returns zero if s1 and s2 are equal (ignoring case), the difference between
3579 * two characters otherwise.
3580 */
3581 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003582mb_strnicmp(char_u *s1, char_u *s2, size_t nn)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003583{
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003584 int i, l;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003585 int cdiff;
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00003586 int n = (int)nn;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003587
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003588 if (enc_utf8)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003589 {
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003590 return utf_strnicmp(s1, s2, nn, nn);
3591 }
3592 else
3593 {
3594 for (i = 0; i < n; i += l)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003595 {
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003596 if (s1[i] == NUL && s2[i] == NUL) /* both strings end */
3597 return 0;
3598
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003599 l = (*mb_ptr2len)(s1 + i);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003600 if (l <= 1)
3601 {
3602 /* Single byte: first check normally, then with ignore case. */
3603 if (s1[i] != s2[i])
3604 {
Bram Moolenaara245a5b2007-08-11 11:58:23 +00003605 cdiff = MB_TOLOWER(s1[i]) - MB_TOLOWER(s2[i]);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003606 if (cdiff != 0)
3607 return cdiff;
3608 }
3609 }
3610 else
3611 {
3612 /* For non-Unicode multi-byte don't ignore case. */
3613 if (l > n - i)
3614 l = n - i;
3615 cdiff = STRNCMP(s1 + i, s2 + i, l);
3616 if (cdiff != 0)
3617 return cdiff;
3618 }
3619 }
3620 }
3621 return 0;
3622}
3623
3624/*
3625 * "g8": show bytes of the UTF-8 char under the cursor. Doesn't matter what
3626 * 'encoding' has been set to.
3627 */
3628 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003629show_utf8(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003630{
3631 int len;
Bram Moolenaar051b7822005-05-19 21:00:46 +00003632 int rlen = 0;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003633 char_u *line;
3634 int clen;
3635 int i;
3636
3637 /* Get the byte length of the char under the cursor, including composing
3638 * characters. */
3639 line = ml_get_cursor();
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003640 len = utfc_ptr2len(line);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003641 if (len == 0)
3642 {
3643 MSG("NUL");
3644 return;
3645 }
3646
Bram Moolenaar071d4272004-06-13 20:20:40 +00003647 clen = 0;
3648 for (i = 0; i < len; ++i)
3649 {
3650 if (clen == 0)
3651 {
3652 /* start of (composing) character, get its length */
3653 if (i > 0)
Bram Moolenaar051b7822005-05-19 21:00:46 +00003654 {
3655 STRCPY(IObuff + rlen, "+ ");
3656 rlen += 2;
3657 }
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003658 clen = utf_ptr2len(line + i);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003659 }
Bram Moolenaarb382ad12010-05-21 15:46:35 +02003660 sprintf((char *)IObuff + rlen, "%02x ",
Bram Moolenaarcc448b32010-07-14 16:52:17 +02003661 (line[i] == NL) ? NUL : line[i]); /* NUL is stored as NL */
Bram Moolenaar071d4272004-06-13 20:20:40 +00003662 --clen;
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00003663 rlen += (int)STRLEN(IObuff + rlen);
Bram Moolenaar051b7822005-05-19 21:00:46 +00003664 if (rlen > IOSIZE - 20)
3665 break;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003666 }
3667
3668 msg(IObuff);
3669}
3670
3671/*
3672 * mb_head_off() function pointer.
3673 * Return offset from "p" to the first byte of the character it points into.
Bram Moolenaar24397332009-12-02 14:02:39 +00003674 * If "p" points to the NUL at the end of the string return 0.
Bram Moolenaar071d4272004-06-13 20:20:40 +00003675 * Returns 0 when already at the first byte of a character.
3676 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00003677 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003678latin_head_off(char_u *base UNUSED, char_u *p UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003679{
3680 return 0;
3681}
3682
3683 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003684dbcs_head_off(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003685{
3686 char_u *q;
3687
3688 /* It can't be a trailing byte when not using DBCS, at the start of the
3689 * string or the previous byte can't start a double-byte. */
Bram Moolenaar24397332009-12-02 14:02:39 +00003690 if (p <= base || MB_BYTE2LEN(p[-1]) == 1 || *p == NUL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003691 return 0;
3692
3693 /* This is slow: need to start at the base and go forward until the
3694 * byte we are looking for. Return 1 when we went past it, 0 otherwise. */
3695 q = base;
3696 while (q < p)
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003697 q += dbcs_ptr2len(q);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003698 return (q == p) ? 0 : 1;
3699}
3700
Bram Moolenaar071d4272004-06-13 20:20:40 +00003701/*
3702 * Special version of dbcs_head_off() that works for ScreenLines[], where
3703 * single-width DBCS_JPNU characters are stored separately.
3704 */
3705 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003706dbcs_screen_head_off(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003707{
3708 char_u *q;
3709
3710 /* It can't be a trailing byte when not using DBCS, at the start of the
3711 * string or the previous byte can't start a double-byte.
3712 * For euc-jp an 0x8e byte in the previous cell always means we have a
3713 * lead byte in the current cell. */
3714 if (p <= base
3715 || (enc_dbcs == DBCS_JPNU && p[-1] == 0x8e)
Bram Moolenaar24397332009-12-02 14:02:39 +00003716 || MB_BYTE2LEN(p[-1]) == 1
3717 || *p == NUL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003718 return 0;
3719
3720 /* This is slow: need to start at the base and go forward until the
3721 * byte we are looking for. Return 1 when we went past it, 0 otherwise.
3722 * For DBCS_JPNU look out for 0x8e, which means the second byte is not
3723 * stored as the next byte. */
3724 q = base;
3725 while (q < p)
3726 {
3727 if (enc_dbcs == DBCS_JPNU && *q == 0x8e)
3728 ++q;
3729 else
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003730 q += dbcs_ptr2len(q);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003731 }
3732 return (q == p) ? 0 : 1;
3733}
Bram Moolenaar071d4272004-06-13 20:20:40 +00003734
3735 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003736utf_head_off(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003737{
3738 char_u *q;
3739 char_u *s;
3740 int c;
Bram Moolenaar24397332009-12-02 14:02:39 +00003741 int len;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003742#ifdef FEAT_ARABIC
3743 char_u *j;
3744#endif
3745
3746 if (*p < 0x80) /* be quick for ASCII */
3747 return 0;
3748
3749 /* Skip backwards over trailing bytes: 10xx.xxxx
3750 * Skip backwards again if on a composing char. */
3751 for (q = p; ; --q)
3752 {
3753 /* Move s to the last byte of this char. */
3754 for (s = q; (s[1] & 0xc0) == 0x80; ++s)
3755 ;
3756 /* Move q to the first byte of this char. */
3757 while (q > base && (*q & 0xc0) == 0x80)
3758 --q;
3759 /* Check for illegal sequence. Do allow an illegal byte after where we
3760 * started. */
Bram Moolenaar24397332009-12-02 14:02:39 +00003761 len = utf8len_tab[*q];
3762 if (len != (int)(s - q + 1) && len != (int)(p - q + 1))
Bram Moolenaar071d4272004-06-13 20:20:40 +00003763 return 0;
3764
3765 if (q <= base)
3766 break;
3767
3768 c = utf_ptr2char(q);
3769 if (utf_iscomposing(c))
3770 continue;
3771
3772#ifdef FEAT_ARABIC
3773 if (arabic_maycombine(c))
3774 {
3775 /* Advance to get a sneak-peak at the next char */
3776 j = q;
3777 --j;
3778 /* Move j to the first byte of this char. */
3779 while (j > base && (*j & 0xc0) == 0x80)
3780 --j;
3781 if (arabic_combine(utf_ptr2char(j), c))
3782 continue;
3783 }
3784#endif
3785 break;
3786 }
3787
3788 return (int)(p - q);
3789}
3790
3791/*
Bram Moolenaard8b02732005-01-14 21:48:43 +00003792 * Copy a character from "*fp" to "*tp" and advance the pointers.
3793 */
3794 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003795mb_copy_char(char_u **fp, char_u **tp)
Bram Moolenaard8b02732005-01-14 21:48:43 +00003796{
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003797 int l = (*mb_ptr2len)(*fp);
Bram Moolenaard8b02732005-01-14 21:48:43 +00003798
3799 mch_memmove(*tp, *fp, (size_t)l);
3800 *tp += l;
3801 *fp += l;
3802}
3803
3804/*
Bram Moolenaar071d4272004-06-13 20:20:40 +00003805 * Return the offset from "p" to the first byte of a character. When "p" is
3806 * at the start of a character 0 is returned, otherwise the offset to the next
3807 * character. Can start anywhere in a stream of bytes.
3808 */
3809 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003810mb_off_next(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003811{
3812 int i;
3813 int j;
3814
3815 if (enc_utf8)
3816 {
3817 if (*p < 0x80) /* be quick for ASCII */
3818 return 0;
3819
3820 /* Find the next character that isn't 10xx.xxxx */
3821 for (i = 0; (p[i] & 0xc0) == 0x80; ++i)
3822 ;
3823 if (i > 0)
3824 {
3825 /* Check for illegal sequence. */
3826 for (j = 0; p - j > base; ++j)
3827 if ((p[-j] & 0xc0) != 0x80)
3828 break;
3829 if (utf8len_tab[p[-j]] != i + j)
3830 return 0;
3831 }
3832 return i;
3833 }
3834
3835 /* Only need to check if we're on a trail byte, it doesn't matter if we
3836 * want the offset to the next or current character. */
3837 return (*mb_head_off)(base, p);
3838}
3839
3840/*
3841 * Return the offset from "p" to the last byte of the character it points
3842 * into. Can start anywhere in a stream of bytes.
3843 */
3844 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003845mb_tail_off(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003846{
3847 int i;
3848 int j;
3849
3850 if (*p == NUL)
3851 return 0;
3852
3853 if (enc_utf8)
3854 {
3855 /* Find the last character that is 10xx.xxxx */
3856 for (i = 0; (p[i + 1] & 0xc0) == 0x80; ++i)
3857 ;
3858 /* Check for illegal sequence. */
3859 for (j = 0; p - j > base; ++j)
3860 if ((p[-j] & 0xc0) != 0x80)
3861 break;
3862 if (utf8len_tab[p[-j]] != i + j + 1)
3863 return 0;
3864 return i;
3865 }
3866
3867 /* It can't be the first byte if a double-byte when not using DBCS, at the
3868 * end of the string or the byte can't start a double-byte. */
3869 if (enc_dbcs == 0 || p[1] == NUL || MB_BYTE2LEN(*p) == 1)
3870 return 0;
3871
3872 /* Return 1 when on the lead byte, 0 when on the tail byte. */
3873 return 1 - dbcs_head_off(base, p);
3874}
3875
Bram Moolenaar68f1a482006-03-17 23:12:21 +00003876/*
3877 * Find the next illegal byte sequence.
3878 */
3879 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003880utf_find_illegal(void)
Bram Moolenaar68f1a482006-03-17 23:12:21 +00003881{
3882 pos_T pos = curwin->w_cursor;
3883 char_u *p;
3884 int len;
3885 vimconv_T vimconv;
3886 char_u *tofree = NULL;
3887
3888 vimconv.vc_type = CONV_NONE;
3889 if (enc_utf8 && (enc_canon_props(curbuf->b_p_fenc) & ENC_8BIT))
3890 {
3891 /* 'encoding' is "utf-8" but we are editing a 8-bit encoded file,
3892 * possibly a utf-8 file with illegal bytes. Setup for conversion
3893 * from utf-8 to 'fileencoding'. */
3894 convert_setup(&vimconv, p_enc, curbuf->b_p_fenc);
3895 }
3896
3897#ifdef FEAT_VIRTUALEDIT
3898 curwin->w_cursor.coladd = 0;
3899#endif
3900 for (;;)
3901 {
3902 p = ml_get_cursor();
3903 if (vimconv.vc_type != CONV_NONE)
3904 {
3905 vim_free(tofree);
3906 tofree = string_convert(&vimconv, p, NULL);
3907 if (tofree == NULL)
3908 break;
3909 p = tofree;
3910 }
3911
3912 while (*p != NUL)
3913 {
3914 /* Illegal means that there are not enough trail bytes (checked by
3915 * utf_ptr2len()) or too many of them (overlong sequence). */
3916 len = utf_ptr2len(p);
3917 if (*p >= 0x80 && (len == 1
3918 || utf_char2len(utf_ptr2char(p)) != len))
3919 {
3920 if (vimconv.vc_type == CONV_NONE)
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00003921 curwin->w_cursor.col += (colnr_T)(p - ml_get_cursor());
Bram Moolenaar68f1a482006-03-17 23:12:21 +00003922 else
3923 {
3924 int l;
3925
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00003926 len = (int)(p - tofree);
Bram Moolenaar68f1a482006-03-17 23:12:21 +00003927 for (p = ml_get_cursor(); *p != NUL && len-- > 0; p += l)
3928 {
3929 l = utf_ptr2len(p);
3930 curwin->w_cursor.col += l;
3931 }
3932 }
3933 goto theend;
3934 }
3935 p += len;
3936 }
3937 if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
3938 break;
3939 ++curwin->w_cursor.lnum;
3940 curwin->w_cursor.col = 0;
3941 }
3942
3943 /* didn't find it: don't move and beep */
3944 curwin->w_cursor = pos;
3945 beep_flush();
3946
3947theend:
3948 vim_free(tofree);
3949 convert_setup(&vimconv, NULL, NULL);
3950}
3951
Bram Moolenaar0eda7ac2010-06-26 05:38:18 +02003952#if defined(FEAT_GUI_GTK) || defined(PROTO)
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00003953/*
3954 * Return TRUE if string "s" is a valid utf-8 string.
3955 * When "end" is NULL stop at the first NUL.
3956 * When "end" is positive stop there.
3957 */
3958 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003959utf_valid_string(char_u *s, char_u *end)
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00003960{
3961 int l;
3962 char_u *p = s;
3963
3964 while (end == NULL ? *p != NUL : p < end)
3965 {
Bram Moolenaar24397332009-12-02 14:02:39 +00003966 l = utf8len_tab_zero[*p];
3967 if (l == 0)
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00003968 return FALSE; /* invalid lead byte */
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00003969 if (end != NULL && p + l > end)
3970 return FALSE; /* incomplete byte sequence */
3971 ++p;
3972 while (--l > 0)
3973 if ((*p++ & 0xc0) != 0x80)
3974 return FALSE; /* invalid trail byte */
3975 }
3976 return TRUE;
3977}
3978#endif
3979
Bram Moolenaar071d4272004-06-13 20:20:40 +00003980#if defined(FEAT_GUI) || defined(PROTO)
3981/*
3982 * Special version of mb_tail_off() for use in ScreenLines[].
3983 */
3984 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003985dbcs_screen_tail_off(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003986{
3987 /* It can't be the first byte if a double-byte when not using DBCS, at the
3988 * end of the string or the byte can't start a double-byte.
3989 * For euc-jp an 0x8e byte always means we have a lead byte in the current
3990 * cell. */
3991 if (*p == NUL || p[1] == NUL
3992 || (enc_dbcs == DBCS_JPNU && *p == 0x8e)
3993 || MB_BYTE2LEN(*p) == 1)
3994 return 0;
3995
3996 /* Return 1 when on the lead byte, 0 when on the tail byte. */
3997 return 1 - dbcs_screen_head_off(base, p);
3998}
3999#endif
4000
4001/*
4002 * If the cursor moves on an trail byte, set the cursor on the lead byte.
4003 * Thus it moves left if necessary.
4004 * Return TRUE when the cursor was adjusted.
4005 */
4006 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004007mb_adjust_cursor(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004008{
Bram Moolenaar03a807a2011-07-07 15:08:58 +02004009 mb_adjustpos(curbuf, &curwin->w_cursor);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004010}
4011
4012/*
4013 * Adjust position "*lp" to point to the first byte of a multi-byte character.
4014 * If it points to a tail byte it's moved backwards to the head byte.
4015 */
4016 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004017mb_adjustpos(buf_T *buf, pos_T *lp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004018{
4019 char_u *p;
4020
4021 if (lp->col > 0
4022#ifdef FEAT_VIRTUALEDIT
4023 || lp->coladd > 1
4024#endif
4025 )
4026 {
Bram Moolenaar03a807a2011-07-07 15:08:58 +02004027 p = ml_get_buf(buf, lp->lnum, FALSE);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004028 lp->col -= (*mb_head_off)(p, p + lp->col);
4029#ifdef FEAT_VIRTUALEDIT
4030 /* Reset "coladd" when the cursor would be on the right half of a
4031 * double-wide character. */
4032 if (lp->coladd == 1
4033 && p[lp->col] != TAB
4034 && vim_isprintc((*mb_ptr2char)(p + lp->col))
4035 && ptr2cells(p + lp->col) > 1)
4036 lp->coladd = 0;
4037#endif
4038 }
4039}
4040
4041/*
4042 * Return a pointer to the character before "*p", if there is one.
4043 */
4044 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004045mb_prevptr(
4046 char_u *line, /* start of the string */
4047 char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004048{
4049 if (p > line)
Bram Moolenaar91acfff2017-03-12 19:22:36 +01004050 MB_PTR_BACK(line, p);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004051 return p;
4052}
4053
4054/*
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00004055 * Return the character length of "str". Each multi-byte character (with
4056 * following composing characters) counts as one.
Bram Moolenaar071d4272004-06-13 20:20:40 +00004057 */
4058 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004059mb_charlen(char_u *str)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004060{
Bram Moolenaarac6e65f2005-08-29 22:25:38 +00004061 char_u *p = str;
4062 int count;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004063
Bram Moolenaarac6e65f2005-08-29 22:25:38 +00004064 if (p == NULL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004065 return 0;
4066
Bram Moolenaarac6e65f2005-08-29 22:25:38 +00004067 for (count = 0; *p != NUL; count++)
4068 p += (*mb_ptr2len)(p);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004069
4070 return count;
4071}
4072
Bram Moolenaar2b48ad52006-03-12 21:56:11 +00004073#if defined(FEAT_SPELL) || defined(PROTO)
Bram Moolenaarac6e65f2005-08-29 22:25:38 +00004074/*
4075 * Like mb_charlen() but for a string with specified length.
4076 */
4077 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004078mb_charlen_len(char_u *str, int len)
Bram Moolenaarac6e65f2005-08-29 22:25:38 +00004079{
4080 char_u *p = str;
4081 int count;
4082
4083 for (count = 0; *p != NUL && p < str + len; count++)
4084 p += (*mb_ptr2len)(p);
4085
4086 return count;
4087}
4088#endif
4089
Bram Moolenaar071d4272004-06-13 20:20:40 +00004090/*
4091 * Try to un-escape a multi-byte character.
4092 * Used for the "to" and "from" part of a mapping.
4093 * Return the un-escaped string if it is a multi-byte character, and advance
4094 * "pp" to just after the bytes that formed it.
4095 * Return NULL if no multi-byte char was found.
4096 */
4097 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004098mb_unescape(char_u **pp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004099{
Bram Moolenaar4fabd7d2012-09-18 18:03:37 +02004100 static char_u buf[6];
4101 int n;
4102 int m = 0;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004103 char_u *str = *pp;
4104
4105 /* Must translate K_SPECIAL KS_SPECIAL KE_FILLER to K_SPECIAL and CSI
Bram Moolenaar4fabd7d2012-09-18 18:03:37 +02004106 * KS_EXTRA KE_CSI to CSI.
4107 * Maximum length of a utf-8 character is 4 bytes. */
4108 for (n = 0; str[n] != NUL && m < 4; ++n)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004109 {
4110 if (str[n] == K_SPECIAL
4111 && str[n + 1] == KS_SPECIAL
4112 && str[n + 2] == KE_FILLER)
4113 {
4114 buf[m++] = K_SPECIAL;
4115 n += 2;
4116 }
Bram Moolenaar6203ff92008-01-06 16:18:56 +00004117 else if ((str[n] == K_SPECIAL
Bram Moolenaar071d4272004-06-13 20:20:40 +00004118# ifdef FEAT_GUI
Bram Moolenaar6203ff92008-01-06 16:18:56 +00004119 || str[n] == CSI
4120# endif
4121 )
Bram Moolenaar071d4272004-06-13 20:20:40 +00004122 && str[n + 1] == KS_EXTRA
4123 && str[n + 2] == (int)KE_CSI)
4124 {
4125 buf[m++] = CSI;
4126 n += 2;
4127 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00004128 else if (str[n] == K_SPECIAL
4129# ifdef FEAT_GUI
4130 || str[n] == CSI
4131# endif
4132 )
4133 break; /* a special key can't be a multibyte char */
4134 else
4135 buf[m++] = str[n];
4136 buf[m] = NUL;
4137
4138 /* Return a multi-byte character if it's found. An illegal sequence
4139 * will result in a 1 here. */
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00004140 if ((*mb_ptr2len)(buf) > 1)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004141 {
4142 *pp = str + n + 1;
4143 return buf;
4144 }
Bram Moolenaar4fabd7d2012-09-18 18:03:37 +02004145
4146 /* Bail out quickly for ASCII. */
4147 if (buf[0] < 128)
4148 break;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004149 }
4150 return NULL;
4151}
4152
4153/*
4154 * Return TRUE if the character at "row"/"col" on the screen is the left side
4155 * of a double-width character.
4156 * Caller must make sure "row" and "col" are not invalid!
4157 */
4158 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004159mb_lefthalve(int row, int col)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004160{
4161#ifdef FEAT_HANGULIN
4162 if (composing_hangul)
4163 return TRUE;
4164#endif
Bram Moolenaar367329b2007-08-30 11:53:22 +00004165 return (*mb_off2cells)(LineOffset[row] + col,
4166 LineOffset[row] + screen_Columns) > 1;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004167}
4168
Bram Moolenaar071d4272004-06-13 20:20:40 +00004169/*
Bram Moolenaare37d50a2008-08-06 17:06:04 +00004170 * Correct a position on the screen, if it's the right half of a double-wide
4171 * char move it to the left half. Returns the corrected column.
Bram Moolenaar071d4272004-06-13 20:20:40 +00004172 */
4173 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004174mb_fix_col(int col, int row)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004175{
4176 col = check_col(col);
4177 row = check_row(row);
4178 if (has_mbyte && ScreenLines != NULL && col > 0
4179 && ((enc_dbcs
4180 && ScreenLines[LineOffset[row] + col] != NUL
4181 && dbcs_screen_head_off(ScreenLines + LineOffset[row],
4182 ScreenLines + LineOffset[row] + col))
4183 || (enc_utf8 && ScreenLines[LineOffset[row] + col] == 0)))
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004184 return col - 1;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004185 return col;
4186}
Bram Moolenaar071d4272004-06-13 20:20:40 +00004187#endif
4188
4189#if defined(FEAT_MBYTE) || defined(FEAT_POSTSCRIPT) || defined(PROTO)
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +01004190static int enc_alias_search(char_u *name);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004191
4192/*
4193 * Skip the Vim specific head of a 'encoding' name.
4194 */
4195 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004196enc_skip(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004197{
4198 if (STRNCMP(p, "2byte-", 6) == 0)
4199 return p + 6;
4200 if (STRNCMP(p, "8bit-", 5) == 0)
4201 return p + 5;
4202 return p;
4203}
4204
4205/*
4206 * Find the canonical name for encoding "enc".
4207 * When the name isn't recognized, returns "enc" itself, but with all lower
4208 * case characters and '_' replaced with '-'.
4209 * Returns an allocated string. NULL for out-of-memory.
4210 */
4211 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004212enc_canonize(char_u *enc)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004213{
4214 char_u *r;
4215 char_u *p, *s;
4216 int i;
4217
Bram Moolenaar1cd871b2004-12-19 22:46:22 +00004218# ifdef FEAT_MBYTE
4219 if (STRCMP(enc, "default") == 0)
4220 {
4221 /* Use the default encoding as it's found by set_init_1(). */
4222 r = get_encoding_default();
4223 if (r == NULL)
4224 r = (char_u *)"latin1";
4225 return vim_strsave(r);
4226 }
4227# endif
4228
Bram Moolenaar29466f22007-05-10 17:45:37 +00004229 /* copy "enc" to allocated memory, with room for two '-' */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004230 r = alloc((unsigned)(STRLEN(enc) + 3));
4231 if (r != NULL)
4232 {
4233 /* Make it all lower case and replace '_' with '-'. */
4234 p = r;
4235 for (s = enc; *s != NUL; ++s)
4236 {
4237 if (*s == '_')
4238 *p++ = '-';
4239 else
4240 *p++ = TOLOWER_ASC(*s);
4241 }
4242 *p = NUL;
4243
4244 /* Skip "2byte-" and "8bit-". */
4245 p = enc_skip(r);
4246
Bram Moolenaarae5bce12005-08-15 21:41:48 +00004247 /* Change "microsoft-cp" to "cp". Used in some spell files. */
4248 if (STRNCMP(p, "microsoft-cp", 12) == 0)
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004249 STRMOVE(p, p + 10);
Bram Moolenaarae5bce12005-08-15 21:41:48 +00004250
Bram Moolenaar071d4272004-06-13 20:20:40 +00004251 /* "iso8859" -> "iso-8859" */
4252 if (STRNCMP(p, "iso8859", 7) == 0)
4253 {
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004254 STRMOVE(p + 4, p + 3);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004255 p[3] = '-';
4256 }
4257
4258 /* "iso-8859n" -> "iso-8859-n" */
4259 if (STRNCMP(p, "iso-8859", 8) == 0 && p[8] != '-')
4260 {
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004261 STRMOVE(p + 9, p + 8);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004262 p[8] = '-';
4263 }
4264
4265 /* "latin-N" -> "latinN" */
4266 if (STRNCMP(p, "latin-", 6) == 0)
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004267 STRMOVE(p + 5, p + 6);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004268
4269 if (enc_canon_search(p) >= 0)
4270 {
4271 /* canonical name can be used unmodified */
4272 if (p != r)
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004273 STRMOVE(r, p);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004274 }
4275 else if ((i = enc_alias_search(p)) >= 0)
4276 {
4277 /* alias recognized, get canonical name */
4278 vim_free(r);
4279 r = vim_strsave((char_u *)enc_canon_table[i].name);
4280 }
4281 }
4282 return r;
4283}
4284
4285/*
4286 * Search for an encoding alias of "name".
4287 * Returns -1 when not found.
4288 */
4289 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004290enc_alias_search(char_u *name)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004291{
4292 int i;
4293
4294 for (i = 0; enc_alias_table[i].name != NULL; ++i)
4295 if (STRCMP(name, enc_alias_table[i].name) == 0)
4296 return enc_alias_table[i].canon;
4297 return -1;
4298}
4299#endif
4300
4301#if defined(FEAT_MBYTE) || defined(PROTO)
4302
4303#ifdef HAVE_LANGINFO_H
4304# include <langinfo.h>
4305#endif
4306
4307/*
4308 * Get the canonicalized encoding of the current locale.
4309 * Returns an allocated string when successful, NULL when not.
4310 */
4311 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004312enc_locale(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004313{
4314#ifndef WIN3264
4315 char *s;
4316 char *p;
4317 int i;
4318#endif
4319 char buf[50];
4320#ifdef WIN3264
4321 long acp = GetACP();
4322
4323 if (acp == 1200)
4324 STRCPY(buf, "ucs-2le");
Bram Moolenaar35fdbb52005-07-09 21:08:57 +00004325 else if (acp == 1252) /* cp1252 is used as latin1 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004326 STRCPY(buf, "latin1");
4327 else
4328 sprintf(buf, "cp%ld", acp);
4329#else
4330# ifdef HAVE_NL_LANGINFO_CODESET
4331 if ((s = nl_langinfo(CODESET)) == NULL || *s == NUL)
4332# endif
Bram Moolenaardf177f62005-02-22 08:39:57 +00004333# if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004334 if ((s = setlocale(LC_CTYPE, NULL)) == NULL || *s == NUL)
Bram Moolenaardf177f62005-02-22 08:39:57 +00004335# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00004336 if ((s = getenv("LC_ALL")) == NULL || *s == NUL)
4337 if ((s = getenv("LC_CTYPE")) == NULL || *s == NUL)
4338 s = getenv("LANG");
4339
4340 if (s == NULL || *s == NUL)
4341 return FAIL;
4342
4343 /* The most generic locale format is:
4344 * language[_territory][.codeset][@modifier][+special][,[sponsor][_revision]]
4345 * If there is a '.' remove the part before it.
4346 * if there is something after the codeset, remove it.
4347 * Make the name lowercase and replace '_' with '-'.
4348 * Exception: "ja_JP.EUC" == "euc-jp", "zh_CN.EUC" = "euc-cn",
4349 * "ko_KR.EUC" == "euc-kr"
4350 */
4351 if ((p = (char *)vim_strchr((char_u *)s, '.')) != NULL)
4352 {
4353 if (p > s + 2 && STRNICMP(p + 1, "EUC", 3) == 0
4354 && !isalnum((int)p[4]) && p[4] != '-' && p[-3] == '_')
4355 {
4356 /* copy "XY.EUC" to "euc-XY" to buf[10] */
4357 STRCPY(buf + 10, "euc-");
4358 buf[14] = p[-2];
4359 buf[15] = p[-1];
4360 buf[16] = 0;
4361 s = buf + 10;
4362 }
4363 else
4364 s = p + 1;
4365 }
Bram Moolenaar5498a412016-07-11 23:19:05 +02004366 for (i = 0; i < (int)sizeof(buf) - 1 && s[i] != NUL; ++i)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004367 {
4368 if (s[i] == '_' || s[i] == '-')
4369 buf[i] = '-';
4370 else if (isalnum((int)s[i]))
4371 buf[i] = TOLOWER_ASC(s[i]);
4372 else
4373 break;
4374 }
4375 buf[i] = NUL;
4376#endif
4377
4378 return enc_canonize((char_u *)buf);
4379}
4380
Bram Moolenaar693e40c2013-02-26 14:56:42 +01004381#if defined(WIN3264) || defined(PROTO) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004382/*
4383 * Convert an encoding name to an MS-Windows codepage.
4384 * Returns zero if no codepage can be figured out.
4385 */
4386 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004387encname2codepage(char_u *name)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004388{
4389 int cp;
4390 char_u *p = name;
4391 int idx;
4392
4393 if (STRNCMP(p, "8bit-", 5) == 0)
4394 p += 5;
4395 else if (STRNCMP(p_enc, "2byte-", 6) == 0)
4396 p += 6;
4397
4398 if (p[0] == 'c' && p[1] == 'p')
Bram Moolenaar2c6f3dc2013-07-05 20:09:16 +02004399 cp = atoi((char *)p + 2);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004400 else if ((idx = enc_canon_search(p)) >= 0)
4401 cp = enc_canon_table[idx].codepage;
4402 else
4403 return 0;
4404 if (IsValidCodePage(cp))
4405 return cp;
4406 return 0;
4407}
4408#endif
4409
4410# if defined(USE_ICONV) || defined(PROTO)
4411
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +01004412static char_u *iconv_string(vimconv_T *vcp, char_u *str, int slen, int *unconvlenp, int *resultlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004413
4414/*
4415 * Call iconv_open() with a check if iconv() works properly (there are broken
4416 * versions).
4417 * Returns (void *)-1 if failed.
4418 * (should return iconv_t, but that causes problems with prototypes).
4419 */
4420 void *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004421my_iconv_open(char_u *to, char_u *from)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004422{
4423 iconv_t fd;
4424#define ICONV_TESTLEN 400
4425 char_u tobuf[ICONV_TESTLEN];
4426 char *p;
4427 size_t tolen;
4428 static int iconv_ok = -1;
4429
4430 if (iconv_ok == FALSE)
4431 return (void *)-1; /* detected a broken iconv() previously */
4432
4433#ifdef DYNAMIC_ICONV
4434 /* Check if the iconv.dll can be found. */
4435 if (!iconv_enabled(TRUE))
4436 return (void *)-1;
4437#endif
4438
4439 fd = iconv_open((char *)enc_skip(to), (char *)enc_skip(from));
4440
4441 if (fd != (iconv_t)-1 && iconv_ok == -1)
4442 {
4443 /*
4444 * Do a dummy iconv() call to check if it actually works. There is a
4445 * version of iconv() on Linux that is broken. We can't ignore it,
4446 * because it's wide-spread. The symptoms are that after outputting
4447 * the initial shift state the "to" pointer is NULL and conversion
4448 * stops for no apparent reason after about 8160 characters.
4449 */
4450 p = (char *)tobuf;
4451 tolen = ICONV_TESTLEN;
4452 (void)iconv(fd, NULL, NULL, &p, &tolen);
4453 if (p == NULL)
4454 {
4455 iconv_ok = FALSE;
4456 iconv_close(fd);
4457 fd = (iconv_t)-1;
4458 }
4459 else
4460 iconv_ok = TRUE;
4461 }
4462
4463 return (void *)fd;
4464}
4465
4466/*
4467 * Convert the string "str[slen]" with iconv().
4468 * If "unconvlenp" is not NULL handle the string ending in an incomplete
4469 * sequence and set "*unconvlenp" to the length of it.
4470 * Returns the converted string in allocated memory. NULL for an error.
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00004471 * If resultlenp is not NULL, sets it to the result length in bytes.
Bram Moolenaar071d4272004-06-13 20:20:40 +00004472 */
4473 static char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004474iconv_string(
4475 vimconv_T *vcp,
4476 char_u *str,
4477 int slen,
4478 int *unconvlenp,
4479 int *resultlenp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004480{
4481 const char *from;
4482 size_t fromlen;
4483 char *to;
4484 size_t tolen;
4485 size_t len = 0;
4486 size_t done = 0;
4487 char_u *result = NULL;
4488 char_u *p;
4489 int l;
4490
4491 from = (char *)str;
4492 fromlen = slen;
4493 for (;;)
4494 {
4495 if (len == 0 || ICONV_ERRNO == ICONV_E2BIG)
4496 {
4497 /* Allocate enough room for most conversions. When re-allocating
4498 * increase the buffer size. */
4499 len = len + fromlen * 2 + 40;
4500 p = alloc((unsigned)len);
4501 if (p != NULL && done > 0)
4502 mch_memmove(p, result, done);
4503 vim_free(result);
4504 result = p;
4505 if (result == NULL) /* out of memory */
4506 break;
4507 }
4508
4509 to = (char *)result + done;
4510 tolen = len - done - 2;
4511 /* Avoid a warning for systems with a wrong iconv() prototype by
4512 * casting the second argument to void *. */
4513 if (iconv(vcp->vc_fd, (void *)&from, &fromlen, &to, &tolen)
4514 != (size_t)-1)
4515 {
4516 /* Finished, append a NUL. */
4517 *to = NUL;
4518 break;
4519 }
4520
4521 /* Check both ICONV_EINVAL and EINVAL, because the dynamically loaded
4522 * iconv library may use one of them. */
4523 if (!vcp->vc_fail && unconvlenp != NULL
4524 && (ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL))
4525 {
4526 /* Handle an incomplete sequence at the end. */
4527 *to = NUL;
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00004528 *unconvlenp = (int)fromlen;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004529 break;
4530 }
4531
4532 /* Check both ICONV_EILSEQ and EILSEQ, because the dynamically loaded
4533 * iconv library may use one of them. */
4534 else if (!vcp->vc_fail
4535 && (ICONV_ERRNO == ICONV_EILSEQ || ICONV_ERRNO == EILSEQ
4536 || ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL))
4537 {
4538 /* Can't convert: insert a '?' and skip a character. This assumes
4539 * conversion from 'encoding' to something else. In other
4540 * situations we don't know what to skip anyway. */
4541 *to++ = '?';
4542 if ((*mb_ptr2cells)((char_u *)from) > 1)
4543 *to++ = '?';
Bram Moolenaar217ad922005-03-20 22:37:15 +00004544 if (enc_utf8)
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00004545 l = utfc_ptr2len_len((char_u *)from, (int)fromlen);
Bram Moolenaar217ad922005-03-20 22:37:15 +00004546 else
4547 {
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00004548 l = (*mb_ptr2len)((char_u *)from);
Bram Moolenaar6bb68362005-03-22 23:03:44 +00004549 if (l > (int)fromlen)
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00004550 l = (int)fromlen;
Bram Moolenaar217ad922005-03-20 22:37:15 +00004551 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00004552 from += l;
4553 fromlen -= l;
4554 }
4555 else if (ICONV_ERRNO != ICONV_E2BIG)
4556 {
4557 /* conversion failed */
4558 vim_free(result);
4559 result = NULL;
4560 break;
4561 }
4562 /* Not enough room or skipping illegal sequence. */
4563 done = to - (char *)result;
4564 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00004565
Bram Moolenaar0d35e912011-04-11 14:29:17 +02004566 if (resultlenp != NULL && result != NULL)
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00004567 *resultlenp = (int)(to - (char *)result);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004568 return result;
4569}
4570
4571# if defined(DYNAMIC_ICONV) || defined(PROTO)
4572/*
4573 * Dynamically load the "iconv.dll" on Win32.
4574 */
4575
Bram Moolenaar938ee832016-01-24 15:36:03 +01004576# ifndef DYNAMIC_ICONV /* must be generating prototypes */
4577# define HINSTANCE int
4578# endif
Bram Moolenaard6f676d2005-06-01 21:51:55 +00004579static HINSTANCE hIconvDLL = 0;
4580static HINSTANCE hMsvcrtDLL = 0;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004581
Bram Moolenaar938ee832016-01-24 15:36:03 +01004582# ifndef DYNAMIC_ICONV_DLL
4583# define DYNAMIC_ICONV_DLL "iconv.dll"
4584# define DYNAMIC_ICONV_DLL_ALT1 "libiconv.dll"
4585# define DYNAMIC_ICONV_DLL_ALT2 "libiconv2.dll"
4586# define DYNAMIC_ICONV_DLL_ALT3 "libiconv-2.dll"
4587# endif
4588# ifndef DYNAMIC_MSVCRT_DLL
4589# define DYNAMIC_MSVCRT_DLL "msvcrt.dll"
4590# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00004591
4592/*
4593 * Try opening the iconv.dll and return TRUE if iconv() can be used.
4594 */
4595 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004596iconv_enabled(int verbose)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004597{
4598 if (hIconvDLL != 0 && hMsvcrtDLL != 0)
4599 return TRUE;
Bram Moolenaar9d6ca1c2015-10-13 13:49:09 +02004600
Bram Moolenaar938ee832016-01-24 15:36:03 +01004601 /* The iconv DLL file goes under different names, try them all.
4602 * Do the "2" version first, it's newer. */
4603#ifdef DYNAMIC_ICONV_DLL_ALT2
Bram Moolenaar9d6ca1c2015-10-13 13:49:09 +02004604 if (hIconvDLL == 0)
4605 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT2);
Bram Moolenaar938ee832016-01-24 15:36:03 +01004606#endif
4607#ifdef DYNAMIC_ICONV_DLL_ALT3
Bram Moolenaar9d6ca1c2015-10-13 13:49:09 +02004608 if (hIconvDLL == 0)
4609 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT3);
Bram Moolenaar938ee832016-01-24 15:36:03 +01004610#endif
4611 if (hIconvDLL == 0)
4612 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL);
4613#ifdef DYNAMIC_ICONV_DLL_ALT1
4614 if (hIconvDLL == 0)
4615 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT1);
4616#endif
Bram Moolenaar9d6ca1c2015-10-13 13:49:09 +02004617
Bram Moolenaar071d4272004-06-13 20:20:40 +00004618 if (hIconvDLL != 0)
Bram Moolenaarebbcb822010-10-23 14:02:54 +02004619 hMsvcrtDLL = vimLoadLib(DYNAMIC_MSVCRT_DLL);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004620 if (hIconvDLL == 0 || hMsvcrtDLL == 0)
4621 {
4622 /* Only give the message when 'verbose' is set, otherwise it might be
4623 * done whenever a conversion is attempted. */
4624 if (verbose && p_verbose > 0)
Bram Moolenaara04f10b2005-05-31 22:09:46 +00004625 {
4626 verbose_enter();
Bram Moolenaar071d4272004-06-13 20:20:40 +00004627 EMSG2(_(e_loadlib),
4628 hIconvDLL == 0 ? DYNAMIC_ICONV_DLL : DYNAMIC_MSVCRT_DLL);
Bram Moolenaara04f10b2005-05-31 22:09:46 +00004629 verbose_leave();
4630 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00004631 iconv_end();
4632 return FALSE;
4633 }
4634
Bram Moolenaard857f0e2005-06-21 22:37:39 +00004635 iconv = (void *)GetProcAddress(hIconvDLL, "libiconv");
4636 iconv_open = (void *)GetProcAddress(hIconvDLL, "libiconv_open");
4637 iconv_close = (void *)GetProcAddress(hIconvDLL, "libiconv_close");
4638 iconvctl = (void *)GetProcAddress(hIconvDLL, "libiconvctl");
Bram Moolenaar972c3b82017-01-12 21:44:49 +01004639 iconv_errno = get_dll_import_func(hIconvDLL, "_errno");
Bram Moolenaar8fae8e62013-01-17 14:39:47 +01004640 if (iconv_errno == NULL)
4641 iconv_errno = (void *)GetProcAddress(hMsvcrtDLL, "_errno");
Bram Moolenaar071d4272004-06-13 20:20:40 +00004642 if (iconv == NULL || iconv_open == NULL || iconv_close == NULL
4643 || iconvctl == NULL || iconv_errno == NULL)
4644 {
4645 iconv_end();
4646 if (verbose && p_verbose > 0)
Bram Moolenaara04f10b2005-05-31 22:09:46 +00004647 {
4648 verbose_enter();
Bram Moolenaar071d4272004-06-13 20:20:40 +00004649 EMSG2(_(e_loadfunc), "for libiconv");
Bram Moolenaara04f10b2005-05-31 22:09:46 +00004650 verbose_leave();
4651 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00004652 return FALSE;
4653 }
4654 return TRUE;
4655}
4656
4657 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004658iconv_end(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004659{
4660 /* Don't use iconv() when inputting or outputting characters. */
4661 if (input_conv.vc_type == CONV_ICONV)
4662 convert_setup(&input_conv, NULL, NULL);
4663 if (output_conv.vc_type == CONV_ICONV)
4664 convert_setup(&output_conv, NULL, NULL);
4665
4666 if (hIconvDLL != 0)
4667 FreeLibrary(hIconvDLL);
4668 if (hMsvcrtDLL != 0)
4669 FreeLibrary(hMsvcrtDLL);
4670 hIconvDLL = 0;
4671 hMsvcrtDLL = 0;
4672}
4673# endif /* DYNAMIC_ICONV */
4674# endif /* USE_ICONV */
4675
4676#endif /* FEAT_MBYTE */
4677
4678#if defined(FEAT_XIM) || defined(PROTO)
4679
Bram Moolenaar64404472010-06-26 06:24:45 +02004680# if defined(FEAT_GUI_GTK) || defined(PROTO)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004681static int xim_has_preediting INIT(= FALSE); /* IM current status */
4682
4683/*
4684 * Set preedit_start_col to the current cursor position.
4685 */
4686 static void
4687init_preedit_start_col(void)
4688{
4689 if (State & CMDLINE)
4690 preedit_start_col = cmdline_getvcol_cursor();
Bram Moolenaar9ec021a2015-12-12 16:23:29 +01004691 else if (curwin != NULL && curwin->w_buffer != NULL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004692 getvcol(curwin, &curwin->w_cursor, &preedit_start_col, NULL, NULL);
4693 /* Prevent that preediting marks the buffer as changed. */
4694 xim_changed_while_preediting = curbuf->b_changed;
4695}
Bram Moolenaar071d4272004-06-13 20:20:40 +00004696
4697static int im_is_active = FALSE; /* IM is enabled for current mode */
Bram Moolenaarc236c162008-07-13 17:41:49 +00004698static int preedit_is_active = FALSE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004699static int im_preedit_cursor = 0; /* cursor offset in characters */
4700static int im_preedit_trailing = 0; /* number of characters after cursor */
4701
4702static unsigned long im_commit_handler_id = 0;
4703static unsigned int im_activatekey_keyval = GDK_VoidSymbol;
4704static unsigned int im_activatekey_state = 0;
4705
4706 void
4707im_set_active(int active)
4708{
4709 int was_active;
4710
Bram Moolenaarabab85a2013-06-26 19:18:05 +02004711 was_active = !!im_get_status();
Bram Moolenaar071d4272004-06-13 20:20:40 +00004712 im_is_active = (active && !p_imdisable);
4713
4714 if (im_is_active != was_active)
4715 xim_reset();
4716}
4717
4718 void
4719xim_set_focus(int focus)
4720{
4721 if (xic != NULL)
4722 {
4723 if (focus)
4724 gtk_im_context_focus_in(xic);
4725 else
4726 gtk_im_context_focus_out(xic);
4727 }
4728}
4729
4730 void
4731im_set_position(int row, int col)
4732{
4733 if (xic != NULL)
4734 {
4735 GdkRectangle area;
4736
4737 area.x = FILL_X(col);
4738 area.y = FILL_Y(row);
4739 area.width = gui.char_width * (mb_lefthalve(row, col) ? 2 : 1);
4740 area.height = gui.char_height;
4741
4742 gtk_im_context_set_cursor_location(xic, &area);
4743 }
4744}
4745
4746# if 0 || defined(PROTO) /* apparently only used in gui_x11.c */
4747 void
4748xim_set_preedit(void)
4749{
4750 im_set_position(gui.row, gui.col);
4751}
4752# endif
4753
4754 static void
4755im_add_to_input(char_u *str, int len)
4756{
4757 /* Convert from 'termencoding' (always "utf-8") to 'encoding' */
4758 if (input_conv.vc_type != CONV_NONE)
4759 {
4760 str = string_convert(&input_conv, str, &len);
4761 g_return_if_fail(str != NULL);
4762 }
4763
4764 add_to_input_buf_csi(str, len);
4765
4766 if (input_conv.vc_type != CONV_NONE)
4767 vim_free(str);
4768
4769 if (p_mh) /* blank out the pointer if necessary */
4770 gui_mch_mousehide(TRUE);
4771}
4772
4773 static void
4774im_delete_preedit(void)
4775{
4776 char_u bskey[] = {CSI, 'k', 'b'};
4777 char_u delkey[] = {CSI, 'k', 'D'};
4778
4779 if (State & NORMAL)
4780 {
4781 im_preedit_cursor = 0;
4782 return;
4783 }
4784 for (; im_preedit_cursor > 0; --im_preedit_cursor)
4785 add_to_input_buf(bskey, (int)sizeof(bskey));
4786
4787 for (; im_preedit_trailing > 0; --im_preedit_trailing)
4788 add_to_input_buf(delkey, (int)sizeof(delkey));
4789}
4790
Bram Moolenaar39fecab2006-08-29 14:07:36 +00004791/*
4792 * Move the cursor left by "num_move_back" characters.
4793 * Note that ins_left() checks im_is_preediting() to avoid breaking undo for
4794 * these K_LEFT keys.
4795 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004796 static void
4797im_correct_cursor(int num_move_back)
4798{
4799 char_u backkey[] = {CSI, 'k', 'l'};
4800
4801 if (State & NORMAL)
4802 return;
4803# ifdef FEAT_RIGHTLEFT
4804 if ((State & CMDLINE) == 0 && curwin != NULL && curwin->w_p_rl)
4805 backkey[2] = 'r';
4806# endif
4807 for (; num_move_back > 0; --num_move_back)
4808 add_to_input_buf(backkey, (int)sizeof(backkey));
4809}
4810
4811static int xim_expected_char = NUL;
4812static int xim_ignored_char = FALSE;
4813
4814/*
4815 * Update the mode and cursor while in an IM callback.
4816 */
4817 static void
4818im_show_info(void)
4819{
4820 int old_vgetc_busy;
Bram Moolenaar5555acc2006-04-07 21:33:12 +00004821
Bram Moolenaar071d4272004-06-13 20:20:40 +00004822 old_vgetc_busy = vgetc_busy;
4823 vgetc_busy = TRUE;
4824 showmode();
4825 vgetc_busy = old_vgetc_busy;
Bram Moolenaar917ba892012-03-07 19:38:55 +01004826 if ((State & NORMAL) || (State & INSERT))
4827 setcursor();
Bram Moolenaar071d4272004-06-13 20:20:40 +00004828 out_flush();
4829}
4830
4831/*
4832 * Callback invoked when the user finished preediting.
4833 * Put the final string into the input buffer.
4834 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004835 static void
Bram Moolenaar2c4278f2009-05-17 11:33:22 +00004836im_commit_cb(GtkIMContext *context UNUSED,
4837 const gchar *str,
4838 gpointer data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004839{
Bram Moolenaar72597a52010-07-18 15:31:08 +02004840 int slen = (int)STRLEN(str);
4841 int add_to_input = TRUE;
4842 int clen;
4843 int len = slen;
4844 int commit_with_preedit = TRUE;
4845 char_u *im_str;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004846
4847#ifdef XIM_DEBUG
4848 xim_log("im_commit_cb(): %s\n", str);
4849#endif
4850
4851 /* The imhangul module doesn't reset the preedit string before
4852 * committing. Call im_delete_preedit() to work around that. */
4853 im_delete_preedit();
4854
4855 /* Indicate that preediting has finished. */
4856 if (preedit_start_col == MAXCOL)
4857 {
4858 init_preedit_start_col();
4859 commit_with_preedit = FALSE;
4860 }
4861
4862 /* The thing which setting "preedit_start_col" to MAXCOL means that
Bram Moolenaar84a05ac2013-05-06 04:24:17 +02004863 * "preedit_start_col" will be set forcedly when calling
Bram Moolenaar071d4272004-06-13 20:20:40 +00004864 * preedit_changed_cb() next time.
4865 * "preedit_start_col" should not reset with MAXCOL on this part. Vim
4866 * is simulating the preediting by using add_to_input_str(). when
4867 * preedit begin immediately before committed, the typebuf is not
4868 * flushed to screen, then it can't get correct "preedit_start_col".
4869 * Thus, it should calculate the cells by adding cells of the committed
4870 * string. */
4871 if (input_conv.vc_type != CONV_NONE)
4872 {
4873 im_str = string_convert(&input_conv, (char_u *)str, &len);
4874 g_return_if_fail(im_str != NULL);
4875 }
4876 else
4877 im_str = (char_u *)str;
Bram Moolenaar72597a52010-07-18 15:31:08 +02004878
4879 clen = mb_string2cells(im_str, len);
4880
Bram Moolenaar071d4272004-06-13 20:20:40 +00004881 if (input_conv.vc_type != CONV_NONE)
4882 vim_free(im_str);
4883 preedit_start_col += clen;
4884
4885 /* Is this a single character that matches a keypad key that's just
4886 * been pressed? If so, we don't want it to be entered as such - let
4887 * us carry on processing the raw keycode so that it may be used in
4888 * mappings as <kSomething>. */
4889 if (xim_expected_char != NUL)
4890 {
4891 /* We're currently processing a keypad or other special key */
4892 if (slen == 1 && str[0] == xim_expected_char)
4893 {
4894 /* It's a match - don't do it here */
4895 xim_ignored_char = TRUE;
4896 add_to_input = FALSE;
4897 }
4898 else
4899 {
4900 /* Not a match */
4901 xim_ignored_char = FALSE;
4902 }
4903 }
4904
4905 if (add_to_input)
4906 im_add_to_input((char_u *)str, slen);
4907
4908 /* Inserting chars while "im_is_active" is set does not cause a change of
4909 * buffer. When the chars are committed the buffer must be marked as
4910 * changed. */
4911 if (!commit_with_preedit)
4912 preedit_start_col = MAXCOL;
4913
4914 /* This flag is used in changed() at next call. */
4915 xim_changed_while_preediting = TRUE;
4916
4917 if (gtk_main_level() > 0)
4918 gtk_main_quit();
4919}
4920
4921/*
4922 * Callback invoked after start to the preedit.
4923 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004924 static void
Bram Moolenaar2c4278f2009-05-17 11:33:22 +00004925im_preedit_start_cb(GtkIMContext *context UNUSED, gpointer data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004926{
4927#ifdef XIM_DEBUG
4928 xim_log("im_preedit_start_cb()\n");
4929#endif
4930
4931 im_is_active = TRUE;
Bram Moolenaarc236c162008-07-13 17:41:49 +00004932 preedit_is_active = TRUE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004933 gui_update_cursor(TRUE, FALSE);
Bram Moolenaarc236c162008-07-13 17:41:49 +00004934 im_show_info();
Bram Moolenaar071d4272004-06-13 20:20:40 +00004935}
4936
4937/*
4938 * Callback invoked after end to the preedit.
4939 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004940 static void
Bram Moolenaar2c4278f2009-05-17 11:33:22 +00004941im_preedit_end_cb(GtkIMContext *context UNUSED, gpointer data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004942{
4943#ifdef XIM_DEBUG
4944 xim_log("im_preedit_end_cb()\n");
4945#endif
4946 im_delete_preedit();
4947
4948 /* Indicate that preediting has finished */
4949 preedit_start_col = MAXCOL;
4950 xim_has_preediting = FALSE;
4951
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004952#if 0
4953 /* Removal of this line suggested by Takuhiro Nishioka. Fixes that IM was
Bram Moolenaarc236c162008-07-13 17:41:49 +00004954 * switched off unintentionally. We now use preedit_is_active (added by
4955 * SungHyun Nam). */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004956 im_is_active = FALSE;
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004957#endif
Bram Moolenaarc236c162008-07-13 17:41:49 +00004958 preedit_is_active = FALSE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004959 gui_update_cursor(TRUE, FALSE);
4960 im_show_info();
4961}
4962
4963/*
4964 * Callback invoked after changes to the preedit string. If the preedit
4965 * string was empty before, remember the preedit start column so we know
4966 * where to apply feedback attributes. Delete the previous preedit string
4967 * if there was one, save the new preedit cursor offset, and put the new
4968 * string into the input buffer.
4969 *
4970 * TODO: The pragmatic "put into input buffer" approach used here has
4971 * several fundamental problems:
4972 *
4973 * - The characters in the preedit string are subject to remapping.
4974 * That's broken, only the finally committed string should be remapped.
4975 *
4976 * - There is a race condition involved: The retrieved value for the
4977 * current cursor position will be wrong if any unprocessed characters
4978 * are still queued in the input buffer.
4979 *
4980 * - Due to the lack of synchronization between the file buffer in memory
4981 * and any typed characters, it's practically impossible to implement the
4982 * "retrieve_surrounding" and "delete_surrounding" signals reliably. IM
4983 * modules for languages such as Thai are likely to rely on this feature
4984 * for proper operation.
4985 *
4986 * Conclusions: I think support for preediting needs to be moved to the
4987 * core parts of Vim. Ideally, until it has been committed, the preediting
4988 * string should only be displayed and not affect the buffer content at all.
4989 * The question how to deal with the synchronization issue still remains.
4990 * Circumventing the input buffer is probably not desirable. Anyway, I think
4991 * implementing "retrieve_surrounding" is the only hard problem.
4992 *
4993 * One way to solve all of this in a clean manner would be to queue all key
4994 * press/release events "as is" in the input buffer, and apply the IM filtering
4995 * at the receiving end of the queue. This, however, would have a rather large
4996 * impact on the code base. If there is an easy way to force processing of all
4997 * remaining input from within the "retrieve_surrounding" signal handler, this
4998 * might not be necessary. Gotta ask on vim-dev for opinions.
4999 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00005000 static void
Bram Moolenaar2c4278f2009-05-17 11:33:22 +00005001im_preedit_changed_cb(GtkIMContext *context, gpointer data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005002{
5003 char *preedit_string = NULL;
5004 int cursor_index = 0;
5005 int num_move_back = 0;
5006 char_u *str;
5007 char_u *p;
5008 int i;
5009
5010 gtk_im_context_get_preedit_string(context,
5011 &preedit_string, NULL,
5012 &cursor_index);
5013
5014#ifdef XIM_DEBUG
5015 xim_log("im_preedit_changed_cb(): %s\n", preedit_string);
5016#endif
5017
5018 g_return_if_fail(preedit_string != NULL); /* just in case */
5019
5020 /* If preedit_start_col is MAXCOL set it to the current cursor position. */
5021 if (preedit_start_col == MAXCOL && preedit_string[0] != '\0')
5022 {
5023 xim_has_preediting = TRUE;
5024
5025 /* Urgh, this breaks if the input buffer isn't empty now */
5026 init_preedit_start_col();
5027 }
5028 else if (cursor_index == 0 && preedit_string[0] == '\0')
5029 {
Bram Moolenaar39fecab2006-08-29 14:07:36 +00005030 xim_has_preediting = FALSE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005031
5032 /* If at the start position (after typing backspace)
5033 * preedit_start_col must be reset. */
5034 preedit_start_col = MAXCOL;
5035 }
5036
5037 im_delete_preedit();
5038
5039 /*
5040 * Compute the end of the preediting area: "preedit_end_col".
5041 * According to the documentation of gtk_im_context_get_preedit_string(),
5042 * the cursor_pos output argument returns the offset in bytes. This is
5043 * unfortunately not true -- real life shows the offset is in characters,
5044 * and the GTK+ source code agrees with me. Will file a bug later.
5045 */
5046 if (preedit_start_col != MAXCOL)
5047 preedit_end_col = preedit_start_col;
5048 str = (char_u *)preedit_string;
5049 for (p = str, i = 0; *p != NUL; p += utf_byte2len(*p), ++i)
5050 {
5051 int is_composing;
5052
5053 is_composing = ((*p & 0x80) != 0 && utf_iscomposing(utf_ptr2char(p)));
5054 /*
5055 * These offsets are used as counters when generating <BS> and <Del>
5056 * to delete the preedit string. So don't count composing characters
5057 * unless 'delcombine' is enabled.
5058 */
5059 if (!is_composing || p_deco)
5060 {
5061 if (i < cursor_index)
5062 ++im_preedit_cursor;
5063 else
5064 ++im_preedit_trailing;
5065 }
5066 if (!is_composing && i >= cursor_index)
5067 {
5068 /* This is essentially the same as im_preedit_trailing, except
5069 * composing characters are not counted even if p_deco is set. */
5070 ++num_move_back;
5071 }
5072 if (preedit_start_col != MAXCOL)
5073 preedit_end_col += utf_ptr2cells(p);
5074 }
5075
5076 if (p > str)
5077 {
5078 im_add_to_input(str, (int)(p - str));
5079 im_correct_cursor(num_move_back);
5080 }
5081
5082 g_free(preedit_string);
5083
5084 if (gtk_main_level() > 0)
5085 gtk_main_quit();
5086}
5087
5088/*
5089 * Translate the Pango attributes at iter to Vim highlighting attributes.
5090 * Ignore attributes not supported by Vim highlighting. This shouldn't have
5091 * too much impact -- right now we handle even more attributes than necessary
5092 * for the IM modules I tested with.
5093 */
5094 static int
5095translate_pango_attributes(PangoAttrIterator *iter)
5096{
5097 PangoAttribute *attr;
5098 int char_attr = HL_NORMAL;
5099
5100 attr = pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE);
5101 if (attr != NULL && ((PangoAttrInt *)attr)->value
5102 != (int)PANGO_UNDERLINE_NONE)
5103 char_attr |= HL_UNDERLINE;
5104
5105 attr = pango_attr_iterator_get(iter, PANGO_ATTR_WEIGHT);
5106 if (attr != NULL && ((PangoAttrInt *)attr)->value >= (int)PANGO_WEIGHT_BOLD)
5107 char_attr |= HL_BOLD;
5108
5109 attr = pango_attr_iterator_get(iter, PANGO_ATTR_STYLE);
5110 if (attr != NULL && ((PangoAttrInt *)attr)->value
5111 != (int)PANGO_STYLE_NORMAL)
5112 char_attr |= HL_ITALIC;
5113
5114 attr = pango_attr_iterator_get(iter, PANGO_ATTR_BACKGROUND);
5115 if (attr != NULL)
5116 {
5117 const PangoColor *color = &((PangoAttrColor *)attr)->color;
5118
5119 /* Assume inverse if black background is requested */
5120 if ((color->red | color->green | color->blue) == 0)
5121 char_attr |= HL_INVERSE;
5122 }
5123
5124 return char_attr;
5125}
5126
5127/*
5128 * Retrieve the highlighting attributes at column col in the preedit string.
5129 * Return -1 if not in preediting mode or if col is out of range.
5130 */
5131 int
5132im_get_feedback_attr(int col)
5133{
5134 char *preedit_string = NULL;
5135 PangoAttrList *attr_list = NULL;
5136 int char_attr = -1;
5137
5138 if (xic == NULL)
5139 return char_attr;
5140
5141 gtk_im_context_get_preedit_string(xic, &preedit_string, &attr_list, NULL);
5142
5143 if (preedit_string != NULL && attr_list != NULL)
5144 {
Bram Moolenaar89d40322006-08-29 15:30:07 +00005145 int idx;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005146
5147 /* Get the byte index as used by PangoAttrIterator */
Bram Moolenaar89d40322006-08-29 15:30:07 +00005148 for (idx = 0; col > 0 && preedit_string[idx] != '\0'; --col)
5149 idx += utfc_ptr2len((char_u *)preedit_string + idx);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005150
Bram Moolenaar89d40322006-08-29 15:30:07 +00005151 if (preedit_string[idx] != '\0')
Bram Moolenaar071d4272004-06-13 20:20:40 +00005152 {
5153 PangoAttrIterator *iter;
5154 int start, end;
5155
5156 char_attr = HL_NORMAL;
5157 iter = pango_attr_list_get_iterator(attr_list);
5158
5159 /* Extract all relevant attributes from the list. */
5160 do
5161 {
5162 pango_attr_iterator_range(iter, &start, &end);
5163
Bram Moolenaar89d40322006-08-29 15:30:07 +00005164 if (idx >= start && idx < end)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005165 char_attr |= translate_pango_attributes(iter);
5166 }
5167 while (pango_attr_iterator_next(iter));
5168
5169 pango_attr_iterator_destroy(iter);
5170 }
5171 }
5172
5173 if (attr_list != NULL)
5174 pango_attr_list_unref(attr_list);
5175 g_free(preedit_string);
5176
5177 return char_attr;
5178}
5179
5180 void
5181xim_init(void)
5182{
5183#ifdef XIM_DEBUG
5184 xim_log("xim_init()\n");
5185#endif
5186
5187 g_return_if_fail(gui.drawarea != NULL);
Bram Moolenaar98921892016-02-23 17:14:37 +01005188#if GTK_CHECK_VERSION(3,0,0)
5189 g_return_if_fail(gtk_widget_get_window(gui.drawarea) != NULL);
5190#else
Bram Moolenaar071d4272004-06-13 20:20:40 +00005191 g_return_if_fail(gui.drawarea->window != NULL);
Bram Moolenaar98921892016-02-23 17:14:37 +01005192#endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00005193
5194 xic = gtk_im_multicontext_new();
5195 g_object_ref(xic);
5196
5197 im_commit_handler_id = g_signal_connect(G_OBJECT(xic), "commit",
5198 G_CALLBACK(&im_commit_cb), NULL);
5199 g_signal_connect(G_OBJECT(xic), "preedit_changed",
5200 G_CALLBACK(&im_preedit_changed_cb), NULL);
5201 g_signal_connect(G_OBJECT(xic), "preedit_start",
5202 G_CALLBACK(&im_preedit_start_cb), NULL);
5203 g_signal_connect(G_OBJECT(xic), "preedit_end",
5204 G_CALLBACK(&im_preedit_end_cb), NULL);
5205
Bram Moolenaar98921892016-02-23 17:14:37 +01005206#if GTK_CHECK_VERSION(3,0,0)
5207 gtk_im_context_set_client_window(xic, gtk_widget_get_window(gui.drawarea));
5208#else
Bram Moolenaar071d4272004-06-13 20:20:40 +00005209 gtk_im_context_set_client_window(xic, gui.drawarea->window);
Bram Moolenaar98921892016-02-23 17:14:37 +01005210#endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00005211}
5212
5213 void
5214im_shutdown(void)
5215{
5216#ifdef XIM_DEBUG
5217 xim_log("im_shutdown()\n");
5218#endif
5219
5220 if (xic != NULL)
5221 {
5222 gtk_im_context_focus_out(xic);
5223 g_object_unref(xic);
5224 xic = NULL;
5225 }
5226 im_is_active = FALSE;
5227 im_commit_handler_id = 0;
5228 preedit_start_col = MAXCOL;
5229 xim_has_preediting = FALSE;
5230}
5231
5232/*
5233 * Convert the string argument to keyval and state for GdkEventKey.
5234 * If str is valid return TRUE, otherwise FALSE.
5235 *
5236 * See 'imactivatekey' for documentation of the format.
5237 */
5238 static int
5239im_string_to_keyval(const char *str, unsigned int *keyval, unsigned int *state)
5240{
5241 const char *mods_end;
5242 unsigned tmp_keyval;
5243 unsigned tmp_state = 0;
5244
5245 mods_end = strrchr(str, '-');
5246 mods_end = (mods_end != NULL) ? mods_end + 1 : str;
5247
5248 /* Parse modifier keys */
5249 while (str < mods_end)
5250 switch (*str++)
5251 {
5252 case '-': break;
5253 case 'S': case 's': tmp_state |= (unsigned)GDK_SHIFT_MASK; break;
5254 case 'L': case 'l': tmp_state |= (unsigned)GDK_LOCK_MASK; break;
5255 case 'C': case 'c': tmp_state |= (unsigned)GDK_CONTROL_MASK;break;
5256 case '1': tmp_state |= (unsigned)GDK_MOD1_MASK; break;
5257 case '2': tmp_state |= (unsigned)GDK_MOD2_MASK; break;
5258 case '3': tmp_state |= (unsigned)GDK_MOD3_MASK; break;
5259 case '4': tmp_state |= (unsigned)GDK_MOD4_MASK; break;
5260 case '5': tmp_state |= (unsigned)GDK_MOD5_MASK; break;
5261 default:
5262 return FALSE;
5263 }
5264
5265 tmp_keyval = gdk_keyval_from_name(str);
5266
5267 if (tmp_keyval == 0 || tmp_keyval == GDK_VoidSymbol)
5268 return FALSE;
5269
5270 if (keyval != NULL)
5271 *keyval = tmp_keyval;
5272 if (state != NULL)
5273 *state = tmp_state;
5274
5275 return TRUE;
5276}
5277
5278/*
5279 * Return TRUE if p_imak is valid, otherwise FALSE. As a special case, an
5280 * empty string is also regarded as valid.
5281 *
5282 * Note: The numerical key value of p_imak is cached if it was valid; thus
5283 * boldly assuming im_xim_isvalid_imactivate() will always be called whenever
5284 * 'imak' changes. This is currently the case but not obvious -- should
5285 * probably rename the function for clarity.
5286 */
5287 int
5288im_xim_isvalid_imactivate(void)
5289{
5290 if (p_imak[0] == NUL)
5291 {
5292 im_activatekey_keyval = GDK_VoidSymbol;
5293 im_activatekey_state = 0;
5294 return TRUE;
5295 }
5296
5297 return im_string_to_keyval((const char *)p_imak,
5298 &im_activatekey_keyval,
5299 &im_activatekey_state);
5300}
5301
5302 static void
5303im_synthesize_keypress(unsigned int keyval, unsigned int state)
5304{
5305 GdkEventKey *event;
5306
5307# ifdef HAVE_GTK_MULTIHEAD
5308 event = (GdkEventKey *)gdk_event_new(GDK_KEY_PRESS);
Bram Moolenaar98921892016-02-23 17:14:37 +01005309# if GTK_CHECK_VERSION(3,0,0)
5310 g_object_ref(gtk_widget_get_window(gui.drawarea));
5311 /* unreffed by gdk_event_free() */
5312# else
Bram Moolenaar071d4272004-06-13 20:20:40 +00005313 g_object_ref(gui.drawarea->window); /* unreffed by gdk_event_free() */
Bram Moolenaar98921892016-02-23 17:14:37 +01005314# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00005315# else
5316 event = (GdkEventKey *)g_malloc0((gulong)sizeof(GdkEvent));
5317 event->type = GDK_KEY_PRESS;
5318# endif
Bram Moolenaar98921892016-02-23 17:14:37 +01005319# if GTK_CHECK_VERSION(3,0,0)
5320 event->window = gtk_widget_get_window(gui.drawarea);
5321# else
Bram Moolenaar071d4272004-06-13 20:20:40 +00005322 event->window = gui.drawarea->window;
Bram Moolenaar98921892016-02-23 17:14:37 +01005323# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00005324 event->send_event = TRUE;
5325 event->time = GDK_CURRENT_TIME;
5326 event->state = state;
5327 event->keyval = keyval;
5328 event->hardware_keycode = /* needed for XIM */
5329 XKeysymToKeycode(GDK_WINDOW_XDISPLAY(event->window), (KeySym)keyval);
5330 event->length = 0;
5331 event->string = NULL;
5332
5333 gtk_im_context_filter_keypress(xic, event);
5334
5335 /* For consistency, also send the corresponding release event. */
5336 event->type = GDK_KEY_RELEASE;
5337 event->send_event = FALSE;
5338 gtk_im_context_filter_keypress(xic, event);
5339
5340# ifdef HAVE_GTK_MULTIHEAD
5341 gdk_event_free((GdkEvent *)event);
5342# else
5343 g_free(event);
5344# endif
5345}
5346
5347 void
5348xim_reset(void)
5349{
5350 if (xic != NULL)
5351 {
Bram Moolenaar071d4272004-06-13 20:20:40 +00005352 gtk_im_context_reset(xic);
5353
Bram Moolenaar071d4272004-06-13 20:20:40 +00005354 if (p_imdisable)
5355 im_shutdown();
5356 else
5357 {
Bram Moolenaar071d4272004-06-13 20:20:40 +00005358 xim_set_focus(gui.in_focus);
5359
Bram Moolenaarf0327f62013-06-28 20:16:55 +02005360# ifdef FEAT_EVAL
Bram Moolenaarabab85a2013-06-26 19:18:05 +02005361 if (p_imaf[0] != NUL)
5362 {
5363 char_u *argv[1];
5364
5365 if (im_is_active)
5366 argv[0] = (char_u *)"1";
5367 else
5368 argv[0] = (char_u *)"0";
5369 (void)call_func_retnr(p_imaf, 1, argv, FALSE);
5370 }
Bram Moolenaarf0327f62013-06-28 20:16:55 +02005371 else
5372# endif
5373 if (im_activatekey_keyval != GDK_VoidSymbol)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005374 {
5375 if (im_is_active)
5376 {
5377 g_signal_handler_block(xic, im_commit_handler_id);
5378 im_synthesize_keypress(im_activatekey_keyval,
5379 im_activatekey_state);
5380 g_signal_handler_unblock(xic, im_commit_handler_id);
5381 }
5382 }
5383 else
5384 {
5385 im_shutdown();
5386 xim_init();
5387 xim_set_focus(gui.in_focus);
5388 }
5389 }
5390 }
5391
5392 preedit_start_col = MAXCOL;
5393 xim_has_preediting = FALSE;
5394}
5395
5396 int
5397xim_queue_key_press_event(GdkEventKey *event, int down)
5398{
5399 if (down)
5400 {
5401 /*
5402 * Workaround GTK2 XIM 'feature' that always converts keypad keys to
5403 * chars., even when not part of an IM sequence (ref. feature of
5404 * gdk/gdkkeyuni.c).
5405 * Flag any keypad keys that might represent a single char.
5406 * If this (on its own - i.e., not part of an IM sequence) is
5407 * committed while we're processing one of these keys, we can ignore
5408 * that commit and go ahead & process it ourselves. That way we can
5409 * still distinguish keypad keys for use in mappings.
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00005410 * Also add GDK_space to make <S-Space> work.
Bram Moolenaar071d4272004-06-13 20:20:40 +00005411 */
5412 switch (event->keyval)
5413 {
5414 case GDK_KP_Add: xim_expected_char = '+'; break;
5415 case GDK_KP_Subtract: xim_expected_char = '-'; break;
5416 case GDK_KP_Divide: xim_expected_char = '/'; break;
5417 case GDK_KP_Multiply: xim_expected_char = '*'; break;
5418 case GDK_KP_Decimal: xim_expected_char = '.'; break;
5419 case GDK_KP_Equal: xim_expected_char = '='; break;
5420 case GDK_KP_0: xim_expected_char = '0'; break;
5421 case GDK_KP_1: xim_expected_char = '1'; break;
5422 case GDK_KP_2: xim_expected_char = '2'; break;
5423 case GDK_KP_3: xim_expected_char = '3'; break;
5424 case GDK_KP_4: xim_expected_char = '4'; break;
5425 case GDK_KP_5: xim_expected_char = '5'; break;
5426 case GDK_KP_6: xim_expected_char = '6'; break;
5427 case GDK_KP_7: xim_expected_char = '7'; break;
5428 case GDK_KP_8: xim_expected_char = '8'; break;
5429 case GDK_KP_9: xim_expected_char = '9'; break;
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00005430 case GDK_space: xim_expected_char = ' '; break;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005431 default: xim_expected_char = NUL;
5432 }
5433 xim_ignored_char = FALSE;
5434 }
5435
5436 /*
5437 * When typing fFtT, XIM may be activated. Thus it must pass
5438 * gtk_im_context_filter_keypress() in Normal mode.
5439 * And while doing :sh too.
5440 */
5441 if (xic != NULL && !p_imdisable
5442 && (State & (INSERT | CMDLINE | NORMAL | EXTERNCMD)) != 0)
5443 {
5444 /*
5445 * Filter 'imactivatekey' and map it to CTRL-^. This way, Vim is
5446 * always aware of the current status of IM, and can even emulate
5447 * the activation key for modules that don't support one.
5448 */
5449 if (event->keyval == im_activatekey_keyval
5450 && (event->state & im_activatekey_state) == im_activatekey_state)
5451 {
5452 unsigned int state_mask;
5453
5454 /* Require the state of the 3 most used modifiers to match exactly.
5455 * Otherwise e.g. <S-C-space> would be unusable for other purposes
5456 * if the IM activate key is <S-space>. */
5457 state_mask = im_activatekey_state;
5458 state_mask |= ((int)GDK_SHIFT_MASK | (int)GDK_CONTROL_MASK
5459 | (int)GDK_MOD1_MASK);
5460
5461 if ((event->state & state_mask) != im_activatekey_state)
5462 return FALSE;
5463
5464 /* Don't send it a second time on GDK_KEY_RELEASE. */
5465 if (event->type != GDK_KEY_PRESS)
5466 return TRUE;
5467
Bram Moolenaar658b74a2006-03-18 21:33:02 +00005468 if (map_to_exists_mode((char_u *)"", LANGMAP, FALSE))
Bram Moolenaar071d4272004-06-13 20:20:40 +00005469 {
5470 im_set_active(FALSE);
5471
5472 /* ":lmap" mappings exists, toggle use of mappings. */
5473 State ^= LANGMAP;
5474 if (State & LANGMAP)
5475 {
5476 curbuf->b_p_iminsert = B_IMODE_NONE;
5477 State &= ~LANGMAP;
5478 }
5479 else
5480 {
5481 curbuf->b_p_iminsert = B_IMODE_LMAP;
5482 State |= LANGMAP;
5483 }
5484 return TRUE;
5485 }
5486
5487 return gtk_im_context_filter_keypress(xic, event);
5488 }
5489
5490 /* Don't filter events through the IM context if IM isn't active
5491 * right now. Unlike with GTK+ 1.2 we cannot rely on the IM module
5492 * not doing anything before the activation key was sent. */
5493 if (im_activatekey_keyval == GDK_VoidSymbol || im_is_active)
5494 {
5495 int imresult = gtk_im_context_filter_keypress(xic, event);
5496
5497 /* Some XIM send following sequence:
5498 * 1. preedited string.
5499 * 2. committed string.
5500 * 3. line changed key.
5501 * 4. preedited string.
5502 * 5. remove preedited string.
5503 * if 3, Vim can't move back the above line for 5.
5504 * thus, this part should not parse the key. */
5505 if (!imresult && preedit_start_col != MAXCOL
5506 && event->keyval == GDK_Return)
5507 {
5508 im_synthesize_keypress(GDK_Return, 0U);
5509 return FALSE;
5510 }
5511
5512 /* If XIM tried to commit a keypad key as a single char.,
5513 * ignore it so we can use the keypad key 'raw', for mappings. */
5514 if (xim_expected_char != NUL && xim_ignored_char)
5515 /* We had a keypad key, and XIM tried to thieve it */
5516 return FALSE;
5517
Bram Moolenaar673214b2011-07-27 18:25:44 +02005518 /* This is supposed to fix a problem with iBus, that space
5519 * characters don't work in input mode. */
5520 xim_expected_char = NUL;
5521
Bram Moolenaar071d4272004-06-13 20:20:40 +00005522 /* Normal processing */
5523 return imresult;
5524 }
5525 }
5526
5527 return FALSE;
5528}
5529
5530 int
5531im_get_status(void)
5532{
Bram Moolenaarf0327f62013-06-28 20:16:55 +02005533# ifdef FEAT_EVAL
Bram Moolenaarabab85a2013-06-26 19:18:05 +02005534 if (p_imsf[0] != NUL)
5535 {
5536 int is_active;
5537
5538 /* FIXME: Don't execute user function in unsafe situation. */
Bram Moolenaarf0327f62013-06-28 20:16:55 +02005539 if (exiting
5540# ifdef FEAT_AUTOCMD
5541 || is_autocmd_blocked()
5542# endif
5543 )
Bram Moolenaarabab85a2013-06-26 19:18:05 +02005544 return FALSE;
5545 /* FIXME: :py print 'xxx' is shown duplicate result.
5546 * Use silent to avoid it. */
5547 ++msg_silent;
5548 is_active = call_func_retnr(p_imsf, 0, NULL, FALSE);
5549 --msg_silent;
5550 return (is_active > 0);
5551 }
Bram Moolenaarf0327f62013-06-28 20:16:55 +02005552# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00005553 return im_is_active;
5554}
5555
Bram Moolenaar64404472010-06-26 06:24:45 +02005556 int
5557preedit_get_status(void)
5558{
5559 return preedit_is_active;
5560}
5561
5562 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005563im_is_preediting(void)
Bram Moolenaar64404472010-06-26 06:24:45 +02005564{
5565 return xim_has_preediting;
5566}
5567
Bram Moolenaar0eda7ac2010-06-26 05:38:18 +02005568# else /* !FEAT_GUI_GTK */
Bram Moolenaar071d4272004-06-13 20:20:40 +00005569
5570static int xim_is_active = FALSE; /* XIM should be active in the current
5571 mode */
5572static int xim_has_focus = FALSE; /* XIM is really being used for Vim */
5573#ifdef FEAT_GUI_X11
5574static XIMStyle input_style;
5575static int status_area_enabled = TRUE;
5576#endif
5577
Bram Moolenaar071d4272004-06-13 20:20:40 +00005578/*
5579 * Switch using XIM on/off. This is used by the code that changes "State".
5580 */
5581 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005582im_set_active(int active)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005583{
5584 if (xic == NULL)
5585 return;
5586
5587 /* If 'imdisable' is set, XIM is never active. */
5588 if (p_imdisable)
5589 active = FALSE;
Bram Moolenaar860cae12010-06-05 23:22:07 +02005590#if !defined(FEAT_GUI_GTK)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005591 else if (input_style & XIMPreeditPosition)
5592 /* There is a problem in switching XIM off when preediting is used,
5593 * and it is not clear how this can be solved. For now, keep XIM on
5594 * all the time, like it was done in Vim 5.8. */
5595 active = TRUE;
5596#endif
5597
5598 /* Remember the active state, it is needed when Vim gets keyboard focus. */
5599 xim_is_active = active;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005600 xim_set_preedit();
5601}
5602
5603/*
5604 * Adjust using XIM for gaining or losing keyboard focus. Also called when
5605 * "xim_is_active" changes.
5606 */
5607 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005608xim_set_focus(int focus)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005609{
5610 if (xic == NULL)
5611 return;
5612
5613 /*
5614 * XIM only gets focus when the Vim window has keyboard focus and XIM has
5615 * been set active for the current mode.
5616 */
5617 if (focus && xim_is_active)
5618 {
5619 if (!xim_has_focus)
5620 {
5621 xim_has_focus = TRUE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005622 XSetICFocus(xic);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005623 }
5624 }
5625 else
5626 {
5627 if (xim_has_focus)
5628 {
5629 xim_has_focus = FALSE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005630 XUnsetICFocus(xic);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005631 }
5632 }
5633}
5634
Bram Moolenaar071d4272004-06-13 20:20:40 +00005635 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005636im_set_position(int row UNUSED, int col UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005637{
5638 xim_set_preedit();
5639}
5640
5641/*
5642 * Set the XIM to the current cursor position.
5643 */
5644 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005645xim_set_preedit(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005646{
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005647 XVaNestedList attr_list;
5648 XRectangle spot_area;
5649 XPoint over_spot;
5650 int line_space;
5651
Bram Moolenaar60bb4e12010-09-18 13:36:49 +02005652 if (xic == NULL)
5653 return;
5654
5655 xim_set_focus(TRUE);
5656
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005657 if (!xim_has_focus)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005658 {
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005659 /* hide XIM cursor */
5660 over_spot.x = 0;
5661 over_spot.y = -100; /* arbitrary invisible position */
5662 attr_list = (XVaNestedList) XVaCreateNestedList(0,
5663 XNSpotLocation,
5664 &over_spot,
5665 NULL);
5666 XSetICValues(xic, XNPreeditAttributes, attr_list, NULL);
5667 XFree(attr_list);
5668 return;
5669 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00005670
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005671 if (input_style & XIMPreeditPosition)
5672 {
Bram Moolenaar071d4272004-06-13 20:20:40 +00005673 if (xim_fg_color == INVALCOLOR)
5674 {
5675 xim_fg_color = gui.def_norm_pixel;
5676 xim_bg_color = gui.def_back_pixel;
5677 }
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005678 over_spot.x = TEXT_X(gui.col);
5679 over_spot.y = TEXT_Y(gui.row);
5680 spot_area.x = 0;
5681 spot_area.y = 0;
5682 spot_area.height = gui.char_height * Rows;
5683 spot_area.width = gui.char_width * Columns;
5684 line_space = gui.char_height;
5685 attr_list = (XVaNestedList) XVaCreateNestedList(0,
5686 XNSpotLocation, &over_spot,
5687 XNForeground, (Pixel) xim_fg_color,
5688 XNBackground, (Pixel) xim_bg_color,
5689 XNArea, &spot_area,
5690 XNLineSpace, line_space,
5691 NULL);
5692 if (XSetICValues(xic, XNPreeditAttributes, attr_list, NULL))
5693 EMSG(_("E284: Cannot set IC values"));
5694 XFree(attr_list);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005695 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00005696}
5697
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005698#if defined(FEAT_GUI_X11)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005699static char e_xim[] = N_("E285: Failed to create input context");
5700#endif
5701
5702#if defined(FEAT_GUI_X11) || defined(PROTO)
Bram Moolenaara899e6e2016-12-03 16:40:51 +01005703# if defined(XtSpecificationRelease) && XtSpecificationRelease >= 6 && !defined(SUN_SYSTEM)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005704# define USE_X11R6_XIM
5705# endif
5706
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +01005707static int xim_real_init(Window x11_window, Display *x11_display);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005708
5709
5710#ifdef USE_X11R6_XIM
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +01005711static void xim_destroy_cb(XIM im, XPointer client_data, XPointer call_data);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005712
Bram Moolenaar071d4272004-06-13 20:20:40 +00005713 static void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005714xim_instantiate_cb(
5715 Display *display,
5716 XPointer client_data UNUSED,
5717 XPointer call_data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005718{
5719 Window x11_window;
5720 Display *x11_display;
5721
5722#ifdef XIM_DEBUG
5723 xim_log("xim_instantiate_cb()\n");
5724#endif
5725
5726 gui_get_x11_windis(&x11_window, &x11_display);
5727 if (display != x11_display)
5728 return;
5729
5730 xim_real_init(x11_window, x11_display);
Bram Moolenaar2e2a2812006-03-27 20:55:21 +00005731 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005732 if (xic != NULL)
5733 XUnregisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
5734 xim_instantiate_cb, NULL);
5735}
5736
Bram Moolenaar071d4272004-06-13 20:20:40 +00005737 static void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005738xim_destroy_cb(
5739 XIM im UNUSED,
5740 XPointer client_data UNUSED,
5741 XPointer call_data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005742{
5743 Window x11_window;
5744 Display *x11_display;
5745
5746#ifdef XIM_DEBUG
5747 xim_log("xim_destroy_cb()\n");
5748#endif
5749 gui_get_x11_windis(&x11_window, &x11_display);
5750
5751 xic = NULL;
5752 status_area_enabled = FALSE;
5753
Bram Moolenaar2e2a2812006-03-27 20:55:21 +00005754 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005755
5756 XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
5757 xim_instantiate_cb, NULL);
5758}
5759#endif
5760
5761 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005762xim_init(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005763{
5764 Window x11_window;
5765 Display *x11_display;
5766
5767#ifdef XIM_DEBUG
5768 xim_log("xim_init()\n");
5769#endif
5770
5771 gui_get_x11_windis(&x11_window, &x11_display);
5772
5773 xic = NULL;
5774
5775 if (xim_real_init(x11_window, x11_display))
5776 return;
5777
Bram Moolenaar2e2a2812006-03-27 20:55:21 +00005778 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005779
5780#ifdef USE_X11R6_XIM
5781 XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
5782 xim_instantiate_cb, NULL);
5783#endif
5784}
5785
5786 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005787xim_real_init(Window x11_window, Display *x11_display)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005788{
5789 int i;
5790 char *p,
5791 *s,
5792 *ns,
5793 *end,
5794 tmp[1024];
5795#define IMLEN_MAX 40
5796 char buf[IMLEN_MAX + 7];
5797 XIM xim = NULL;
5798 XIMStyles *xim_styles;
5799 XIMStyle this_input_style = 0;
5800 Boolean found;
5801 XPoint over_spot;
5802 XVaNestedList preedit_list, status_list;
5803
5804 input_style = 0;
5805 status_area_enabled = FALSE;
5806
5807 if (xic != NULL)
5808 return FALSE;
5809
5810 if (gui.rsrc_input_method != NULL && *gui.rsrc_input_method != NUL)
5811 {
5812 strcpy(tmp, gui.rsrc_input_method);
5813 for (ns = s = tmp; ns != NULL && *s != NUL;)
5814 {
5815 s = (char *)skipwhite((char_u *)s);
5816 if (*s == NUL)
5817 break;
5818 if ((ns = end = strchr(s, ',')) == NULL)
5819 end = s + strlen(s);
5820 while (isspace(((char_u *)end)[-1]))
5821 end--;
5822 *end = NUL;
5823
5824 if (strlen(s) <= IMLEN_MAX)
5825 {
5826 strcpy(buf, "@im=");
5827 strcat(buf, s);
5828 if ((p = XSetLocaleModifiers(buf)) != NULL && *p != NUL
5829 && (xim = XOpenIM(x11_display, NULL, NULL, NULL))
5830 != NULL)
5831 break;
5832 }
5833
5834 s = ns + 1;
5835 }
5836 }
5837
5838 if (xim == NULL && (p = XSetLocaleModifiers("")) != NULL && *p != NUL)
5839 xim = XOpenIM(x11_display, NULL, NULL, NULL);
5840
5841 /* This is supposed to be useful to obtain characters through
5842 * XmbLookupString() without really using a XIM. */
5843 if (xim == NULL && (p = XSetLocaleModifiers("@im=none")) != NULL
5844 && *p != NUL)
5845 xim = XOpenIM(x11_display, NULL, NULL, NULL);
5846
5847 if (xim == NULL)
5848 {
5849 /* Only give this message when verbose is set, because too many people
5850 * got this message when they didn't want to use a XIM. */
5851 if (p_verbose > 0)
Bram Moolenaara04f10b2005-05-31 22:09:46 +00005852 {
5853 verbose_enter();
Bram Moolenaar071d4272004-06-13 20:20:40 +00005854 EMSG(_("E286: Failed to open input method"));
Bram Moolenaara04f10b2005-05-31 22:09:46 +00005855 verbose_leave();
5856 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00005857 return FALSE;
5858 }
5859
5860#ifdef USE_X11R6_XIM
5861 {
5862 XIMCallback destroy_cb;
5863
5864 destroy_cb.callback = xim_destroy_cb;
5865 destroy_cb.client_data = NULL;
5866 if (XSetIMValues(xim, XNDestroyCallback, &destroy_cb, NULL))
5867 EMSG(_("E287: Warning: Could not set destroy callback to IM"));
5868 }
5869#endif
5870
5871 if (XGetIMValues(xim, XNQueryInputStyle, &xim_styles, NULL) || !xim_styles)
5872 {
5873 EMSG(_("E288: input method doesn't support any style"));
5874 XCloseIM(xim);
5875 return FALSE;
5876 }
5877
5878 found = False;
5879 strcpy(tmp, gui.rsrc_preedit_type_name);
5880 for (s = tmp; s && !found; )
5881 {
5882 while (*s && isspace((unsigned char)*s))
5883 s++;
5884 if (!*s)
5885 break;
5886 if ((ns = end = strchr(s, ',')) != 0)
5887 ns++;
5888 else
5889 end = s + strlen(s);
5890 while (isspace((unsigned char)*end))
5891 end--;
5892 *end = '\0';
5893
5894 if (!strcmp(s, "OverTheSpot"))
5895 this_input_style = (XIMPreeditPosition | XIMStatusArea);
5896 else if (!strcmp(s, "OffTheSpot"))
5897 this_input_style = (XIMPreeditArea | XIMStatusArea);
5898 else if (!strcmp(s, "Root"))
5899 this_input_style = (XIMPreeditNothing | XIMStatusNothing);
5900
5901 for (i = 0; (unsigned short)i < xim_styles->count_styles; i++)
5902 {
5903 if (this_input_style == xim_styles->supported_styles[i])
5904 {
5905 found = True;
5906 break;
5907 }
5908 }
5909 if (!found)
5910 for (i = 0; (unsigned short)i < xim_styles->count_styles; i++)
5911 {
5912 if ((xim_styles->supported_styles[i] & this_input_style)
5913 == (this_input_style & ~XIMStatusArea))
5914 {
5915 this_input_style &= ~XIMStatusArea;
5916 found = True;
5917 break;
5918 }
5919 }
5920
5921 s = ns;
5922 }
5923 XFree(xim_styles);
5924
5925 if (!found)
5926 {
5927 /* Only give this message when verbose is set, because too many people
5928 * got this message when they didn't want to use a XIM. */
5929 if (p_verbose > 0)
Bram Moolenaara04f10b2005-05-31 22:09:46 +00005930 {
5931 verbose_enter();
Bram Moolenaar071d4272004-06-13 20:20:40 +00005932 EMSG(_("E289: input method doesn't support my preedit type"));
Bram Moolenaara04f10b2005-05-31 22:09:46 +00005933 verbose_leave();
5934 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00005935 XCloseIM(xim);
5936 return FALSE;
5937 }
5938
5939 over_spot.x = TEXT_X(gui.col);
5940 over_spot.y = TEXT_Y(gui.row);
5941 input_style = this_input_style;
5942
5943 /* A crash was reported when trying to pass gui.norm_font as XNFontSet,
5944 * thus that has been removed. Hopefully the default works... */
5945#ifdef FEAT_XFONTSET
5946 if (gui.fontset != NOFONTSET)
5947 {
5948 preedit_list = XVaCreateNestedList(0,
5949 XNSpotLocation, &over_spot,
5950 XNForeground, (Pixel)gui.def_norm_pixel,
5951 XNBackground, (Pixel)gui.def_back_pixel,
5952 XNFontSet, (XFontSet)gui.fontset,
5953 NULL);
5954 status_list = XVaCreateNestedList(0,
5955 XNForeground, (Pixel)gui.def_norm_pixel,
5956 XNBackground, (Pixel)gui.def_back_pixel,
5957 XNFontSet, (XFontSet)gui.fontset,
5958 NULL);
5959 }
5960 else
5961#endif
5962 {
5963 preedit_list = XVaCreateNestedList(0,
5964 XNSpotLocation, &over_spot,
5965 XNForeground, (Pixel)gui.def_norm_pixel,
5966 XNBackground, (Pixel)gui.def_back_pixel,
5967 NULL);
5968 status_list = XVaCreateNestedList(0,
5969 XNForeground, (Pixel)gui.def_norm_pixel,
5970 XNBackground, (Pixel)gui.def_back_pixel,
5971 NULL);
5972 }
5973
5974 xic = XCreateIC(xim,
5975 XNInputStyle, input_style,
5976 XNClientWindow, x11_window,
5977 XNFocusWindow, gui.wid,
5978 XNPreeditAttributes, preedit_list,
5979 XNStatusAttributes, status_list,
5980 NULL);
5981 XFree(status_list);
5982 XFree(preedit_list);
5983 if (xic != NULL)
5984 {
5985 if (input_style & XIMStatusArea)
5986 {
5987 xim_set_status_area();
5988 status_area_enabled = TRUE;
5989 }
5990 else
Bram Moolenaar2e2a2812006-03-27 20:55:21 +00005991 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005992 }
5993 else
5994 {
5995 EMSG(_(e_xim));
5996 XCloseIM(xim);
5997 return FALSE;
5998 }
5999
6000 return TRUE;
6001}
6002
6003#endif /* FEAT_GUI_X11 */
6004
Bram Moolenaar071d4272004-06-13 20:20:40 +00006005/*
6006 * Get IM status. When IM is on, return TRUE. Else return FALSE.
6007 * FIXME: This doesn't work correctly: Having focus doesn't always mean XIM is
6008 * active, when not having focus XIM may still be active (e.g., when using a
6009 * tear-off menu item).
6010 */
6011 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006012im_get_status(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006013{
Bram Moolenaar071d4272004-06-13 20:20:40 +00006014 return xim_has_focus;
6015}
6016
Bram Moolenaar0eda7ac2010-06-26 05:38:18 +02006017# endif /* !FEAT_GUI_GTK */
Bram Moolenaar071d4272004-06-13 20:20:40 +00006018
Bram Moolenaar64404472010-06-26 06:24:45 +02006019# if !defined(FEAT_GUI_GTK) || defined(PROTO)
6020/*
6021 * Set up the status area.
6022 *
6023 * This should use a separate Widget, but that seems not possible, because
6024 * preedit_area and status_area should be set to the same window as for the
6025 * text input. Unfortunately this means the status area pollutes the text
6026 * window...
6027 */
6028 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006029xim_set_status_area(void)
Bram Moolenaarc236c162008-07-13 17:41:49 +00006030{
Bram Moolenaar64404472010-06-26 06:24:45 +02006031 XVaNestedList preedit_list = 0, status_list = 0, list = 0;
6032 XRectangle pre_area, status_area;
6033
Bram Moolenaar60bb4e12010-09-18 13:36:49 +02006034 if (xic == NULL)
6035 return;
6036
Bram Moolenaar64404472010-06-26 06:24:45 +02006037 if (input_style & XIMStatusArea)
6038 {
6039 if (input_style & XIMPreeditArea)
6040 {
6041 XRectangle *needed_rect;
6042
6043 /* to get status_area width */
6044 status_list = XVaCreateNestedList(0, XNAreaNeeded,
6045 &needed_rect, NULL);
6046 XGetICValues(xic, XNStatusAttributes, status_list, NULL);
6047 XFree(status_list);
6048
6049 status_area.width = needed_rect->width;
6050 }
6051 else
6052 status_area.width = gui.char_width * Columns;
6053
6054 status_area.x = 0;
6055 status_area.y = gui.char_height * Rows + gui.border_offset;
6056 if (gui.which_scrollbars[SBAR_BOTTOM])
6057 status_area.y += gui.scrollbar_height;
6058#ifdef FEAT_MENU
6059 if (gui.menu_is_active)
6060 status_area.y += gui.menu_height;
6061#endif
6062 status_area.height = gui.char_height;
6063 status_list = XVaCreateNestedList(0, XNArea, &status_area, NULL);
6064 }
6065 else
6066 {
6067 status_area.x = 0;
6068 status_area.y = gui.char_height * Rows + gui.border_offset;
6069 if (gui.which_scrollbars[SBAR_BOTTOM])
6070 status_area.y += gui.scrollbar_height;
6071#ifdef FEAT_MENU
6072 if (gui.menu_is_active)
6073 status_area.y += gui.menu_height;
6074#endif
6075 status_area.width = 0;
6076 status_area.height = gui.char_height;
6077 }
6078
6079 if (input_style & XIMPreeditArea) /* off-the-spot */
6080 {
6081 pre_area.x = status_area.x + status_area.width;
6082 pre_area.y = gui.char_height * Rows + gui.border_offset;
6083 pre_area.width = gui.char_width * Columns - pre_area.x;
6084 if (gui.which_scrollbars[SBAR_BOTTOM])
6085 pre_area.y += gui.scrollbar_height;
6086#ifdef FEAT_MENU
6087 if (gui.menu_is_active)
6088 pre_area.y += gui.menu_height;
6089#endif
6090 pre_area.height = gui.char_height;
6091 preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL);
6092 }
6093 else if (input_style & XIMPreeditPosition) /* over-the-spot */
6094 {
6095 pre_area.x = 0;
6096 pre_area.y = 0;
6097 pre_area.height = gui.char_height * Rows;
6098 pre_area.width = gui.char_width * Columns;
6099 preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL);
6100 }
6101
6102 if (preedit_list && status_list)
6103 list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list,
6104 XNStatusAttributes, status_list, NULL);
6105 else if (preedit_list)
6106 list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list,
6107 NULL);
6108 else if (status_list)
6109 list = XVaCreateNestedList(0, XNStatusAttributes, status_list,
6110 NULL);
6111 else
6112 list = NULL;
6113
6114 if (list)
6115 {
6116 XSetICValues(xic, XNVaNestedList, list, NULL);
6117 XFree(list);
6118 }
6119 if (status_list)
6120 XFree(status_list);
6121 if (preedit_list)
6122 XFree(preedit_list);
6123}
6124
6125 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006126xim_get_status_area_height(void)
Bram Moolenaar64404472010-06-26 06:24:45 +02006127{
6128 if (status_area_enabled)
6129 return gui.char_height;
6130 return 0;
Bram Moolenaarc236c162008-07-13 17:41:49 +00006131}
6132# endif
6133
Bram Moolenaar071d4272004-06-13 20:20:40 +00006134#endif /* FEAT_XIM */
6135
6136#if defined(FEAT_MBYTE) || defined(PROTO)
6137
6138/*
6139 * Setup "vcp" for conversion from "from" to "to".
6140 * The names must have been made canonical with enc_canonize().
6141 * vcp->vc_type must have been initialized to CONV_NONE.
6142 * Note: cannot be used for conversion from/to ucs-2 and ucs-4 (will use utf-8
6143 * instead).
6144 * Afterwards invoke with "from" and "to" equal to NULL to cleanup.
6145 * Return FAIL when conversion is not supported, OK otherwise.
6146 */
6147 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006148convert_setup(vimconv_T *vcp, char_u *from, char_u *to)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006149{
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006150 return convert_setup_ext(vcp, from, TRUE, to, TRUE);
6151}
6152
6153/*
6154 * As convert_setup(), but only when from_unicode_is_utf8 is TRUE will all
6155 * "from" unicode charsets be considered utf-8. Same for "to".
6156 */
6157 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006158convert_setup_ext(
6159 vimconv_T *vcp,
6160 char_u *from,
6161 int from_unicode_is_utf8,
6162 char_u *to,
6163 int to_unicode_is_utf8)
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006164{
Bram Moolenaar071d4272004-06-13 20:20:40 +00006165 int from_prop;
6166 int to_prop;
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006167 int from_is_utf8;
6168 int to_is_utf8;
Bram Moolenaar071d4272004-06-13 20:20:40 +00006169
6170 /* Reset to no conversion. */
6171# ifdef USE_ICONV
6172 if (vcp->vc_type == CONV_ICONV && vcp->vc_fd != (iconv_t)-1)
6173 iconv_close(vcp->vc_fd);
6174# endif
6175 vcp->vc_type = CONV_NONE;
6176 vcp->vc_factor = 1;
6177 vcp->vc_fail = FALSE;
6178
6179 /* No conversion when one of the names is empty or they are equal. */
6180 if (from == NULL || *from == NUL || to == NULL || *to == NUL
6181 || STRCMP(from, to) == 0)
6182 return OK;
6183
6184 from_prop = enc_canon_props(from);
6185 to_prop = enc_canon_props(to);
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006186 if (from_unicode_is_utf8)
6187 from_is_utf8 = from_prop & ENC_UNICODE;
6188 else
6189 from_is_utf8 = from_prop == ENC_UNICODE;
6190 if (to_unicode_is_utf8)
6191 to_is_utf8 = to_prop & ENC_UNICODE;
6192 else
6193 to_is_utf8 = to_prop == ENC_UNICODE;
6194
6195 if ((from_prop & ENC_LATIN1) && to_is_utf8)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006196 {
6197 /* Internal latin1 -> utf-8 conversion. */
6198 vcp->vc_type = CONV_TO_UTF8;
6199 vcp->vc_factor = 2; /* up to twice as long */
6200 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006201 else if ((from_prop & ENC_LATIN9) && to_is_utf8)
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006202 {
6203 /* Internal latin9 -> utf-8 conversion. */
6204 vcp->vc_type = CONV_9_TO_UTF8;
6205 vcp->vc_factor = 3; /* up to three as long (euro sign) */
6206 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006207 else if (from_is_utf8 && (to_prop & ENC_LATIN1))
Bram Moolenaar071d4272004-06-13 20:20:40 +00006208 {
6209 /* Internal utf-8 -> latin1 conversion. */
6210 vcp->vc_type = CONV_TO_LATIN1;
6211 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006212 else if (from_is_utf8 && (to_prop & ENC_LATIN9))
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006213 {
6214 /* Internal utf-8 -> latin9 conversion. */
6215 vcp->vc_type = CONV_TO_LATIN9;
6216 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00006217#ifdef WIN3264
6218 /* Win32-specific codepage <-> codepage conversion without iconv. */
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006219 else if ((from_is_utf8 || encname2codepage(from) > 0)
6220 && (to_is_utf8 || encname2codepage(to) > 0))
Bram Moolenaar071d4272004-06-13 20:20:40 +00006221 {
6222 vcp->vc_type = CONV_CODEPAGE;
6223 vcp->vc_factor = 2; /* up to twice as long */
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006224 vcp->vc_cpfrom = from_is_utf8 ? 0 : encname2codepage(from);
6225 vcp->vc_cpto = to_is_utf8 ? 0 : encname2codepage(to);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006226 }
6227#endif
6228#ifdef MACOS_X
6229 else if ((from_prop & ENC_MACROMAN) && (to_prop & ENC_LATIN1))
6230 {
6231 vcp->vc_type = CONV_MAC_LATIN1;
6232 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006233 else if ((from_prop & ENC_MACROMAN) && to_is_utf8)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006234 {
6235 vcp->vc_type = CONV_MAC_UTF8;
6236 vcp->vc_factor = 2; /* up to twice as long */
6237 }
6238 else if ((from_prop & ENC_LATIN1) && (to_prop & ENC_MACROMAN))
6239 {
6240 vcp->vc_type = CONV_LATIN1_MAC;
6241 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006242 else if (from_is_utf8 && (to_prop & ENC_MACROMAN))
Bram Moolenaar071d4272004-06-13 20:20:40 +00006243 {
6244 vcp->vc_type = CONV_UTF8_MAC;
6245 }
6246#endif
6247# ifdef USE_ICONV
6248 else
6249 {
6250 /* Use iconv() for conversion. */
6251 vcp->vc_fd = (iconv_t)my_iconv_open(
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006252 to_is_utf8 ? (char_u *)"utf-8" : to,
6253 from_is_utf8 ? (char_u *)"utf-8" : from);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006254 if (vcp->vc_fd != (iconv_t)-1)
6255 {
6256 vcp->vc_type = CONV_ICONV;
6257 vcp->vc_factor = 4; /* could be longer too... */
6258 }
6259 }
6260# endif
6261 if (vcp->vc_type == CONV_NONE)
6262 return FAIL;
Bram Moolenaardf177f62005-02-22 08:39:57 +00006263
Bram Moolenaar071d4272004-06-13 20:20:40 +00006264 return OK;
6265}
6266
6267#if defined(FEAT_GUI) || defined(AMIGA) || defined(WIN3264) \
Bram Moolenaar48e330a2016-02-23 14:53:34 +01006268 || defined(PROTO)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006269/*
6270 * Do conversion on typed input characters in-place.
6271 * The input and output are not NUL terminated!
6272 * Returns the length after conversion.
6273 */
6274 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006275convert_input(char_u *ptr, int len, int maxlen)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006276{
6277 return convert_input_safe(ptr, len, maxlen, NULL, NULL);
6278}
6279#endif
6280
6281/*
6282 * Like convert_input(), but when there is an incomplete byte sequence at the
6283 * end return that as an allocated string in "restp" and set "*restlenp" to
6284 * the length. If "restp" is NULL it is not used.
6285 */
6286 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006287convert_input_safe(
6288 char_u *ptr,
6289 int len,
6290 int maxlen,
6291 char_u **restp,
6292 int *restlenp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006293{
6294 char_u *d;
6295 int dlen = len;
6296 int unconvertlen = 0;
6297
6298 d = string_convert_ext(&input_conv, ptr, &dlen,
6299 restp == NULL ? NULL : &unconvertlen);
6300 if (d != NULL)
6301 {
6302 if (dlen <= maxlen)
6303 {
6304 if (unconvertlen > 0)
6305 {
6306 /* Move the unconverted characters to allocated memory. */
6307 *restp = alloc(unconvertlen);
6308 if (*restp != NULL)
6309 mch_memmove(*restp, ptr + len - unconvertlen, unconvertlen);
6310 *restlenp = unconvertlen;
6311 }
6312 mch_memmove(ptr, d, dlen);
6313 }
6314 else
6315 /* result is too long, keep the unconverted text (the caller must
6316 * have done something wrong!) */
6317 dlen = len;
6318 vim_free(d);
6319 }
6320 return dlen;
6321}
6322
Bram Moolenaar071d4272004-06-13 20:20:40 +00006323/*
6324 * Convert text "ptr[*lenp]" according to "vcp".
6325 * Returns the result in allocated memory and sets "*lenp".
6326 * When "lenp" is NULL, use NUL terminated strings.
6327 * Illegal chars are often changed to "?", unless vcp->vc_fail is set.
6328 * When something goes wrong, NULL is returned and "*lenp" is unchanged.
6329 */
6330 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006331string_convert(
6332 vimconv_T *vcp,
6333 char_u *ptr,
6334 int *lenp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006335{
6336 return string_convert_ext(vcp, ptr, lenp, NULL);
6337}
6338
6339/*
6340 * Like string_convert(), but when "unconvlenp" is not NULL and there are is
6341 * an incomplete sequence at the end it is not converted and "*unconvlenp" is
6342 * set to the number of remaining bytes.
6343 */
6344 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006345string_convert_ext(
6346 vimconv_T *vcp,
6347 char_u *ptr,
6348 int *lenp,
6349 int *unconvlenp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006350{
6351 char_u *retval = NULL;
6352 char_u *d;
6353 int len;
6354 int i;
6355 int l;
6356 int c;
6357
6358 if (lenp == NULL)
6359 len = (int)STRLEN(ptr);
6360 else
6361 len = *lenp;
6362 if (len == 0)
6363 return vim_strsave((char_u *)"");
6364
6365 switch (vcp->vc_type)
6366 {
6367 case CONV_TO_UTF8: /* latin1 to utf-8 conversion */
6368 retval = alloc(len * 2 + 1);
6369 if (retval == NULL)
6370 break;
6371 d = retval;
6372 for (i = 0; i < len; ++i)
6373 {
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006374 c = ptr[i];
6375 if (c < 0x80)
6376 *d++ = c;
Bram Moolenaar071d4272004-06-13 20:20:40 +00006377 else
6378 {
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006379 *d++ = 0xc0 + ((unsigned)c >> 6);
6380 *d++ = 0x80 + (c & 0x3f);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006381 }
6382 }
6383 *d = NUL;
6384 if (lenp != NULL)
6385 *lenp = (int)(d - retval);
6386 break;
6387
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006388 case CONV_9_TO_UTF8: /* latin9 to utf-8 conversion */
6389 retval = alloc(len * 3 + 1);
6390 if (retval == NULL)
6391 break;
6392 d = retval;
6393 for (i = 0; i < len; ++i)
6394 {
6395 c = ptr[i];
6396 switch (c)
6397 {
6398 case 0xa4: c = 0x20ac; break; /* euro */
6399 case 0xa6: c = 0x0160; break; /* S hat */
6400 case 0xa8: c = 0x0161; break; /* S -hat */
6401 case 0xb4: c = 0x017d; break; /* Z hat */
6402 case 0xb8: c = 0x017e; break; /* Z -hat */
6403 case 0xbc: c = 0x0152; break; /* OE */
6404 case 0xbd: c = 0x0153; break; /* oe */
6405 case 0xbe: c = 0x0178; break; /* Y */
6406 }
6407 d += utf_char2bytes(c, d);
6408 }
6409 *d = NUL;
6410 if (lenp != NULL)
6411 *lenp = (int)(d - retval);
6412 break;
6413
Bram Moolenaar071d4272004-06-13 20:20:40 +00006414 case CONV_TO_LATIN1: /* utf-8 to latin1 conversion */
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006415 case CONV_TO_LATIN9: /* utf-8 to latin9 conversion */
Bram Moolenaar071d4272004-06-13 20:20:40 +00006416 retval = alloc(len + 1);
6417 if (retval == NULL)
6418 break;
6419 d = retval;
6420 for (i = 0; i < len; ++i)
6421 {
Bram Moolenaar24397332009-12-02 14:02:39 +00006422 l = utf_ptr2len_len(ptr + i, len - i);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006423 if (l == 0)
6424 *d++ = NUL;
6425 else if (l == 1)
6426 {
Bram Moolenaar24397332009-12-02 14:02:39 +00006427 int l_w = utf8len_tab_zero[ptr[i]];
6428
6429 if (l_w == 0)
6430 {
6431 /* Illegal utf-8 byte cannot be converted */
6432 vim_free(retval);
6433 return NULL;
6434 }
6435 if (unconvlenp != NULL && l_w > len - i)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006436 {
6437 /* Incomplete sequence at the end. */
6438 *unconvlenp = len - i;
6439 break;
6440 }
6441 *d++ = ptr[i];
6442 }
6443 else
6444 {
6445 c = utf_ptr2char(ptr + i);
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006446 if (vcp->vc_type == CONV_TO_LATIN9)
6447 switch (c)
6448 {
6449 case 0x20ac: c = 0xa4; break; /* euro */
6450 case 0x0160: c = 0xa6; break; /* S hat */
6451 case 0x0161: c = 0xa8; break; /* S -hat */
6452 case 0x017d: c = 0xb4; break; /* Z hat */
6453 case 0x017e: c = 0xb8; break; /* Z -hat */
6454 case 0x0152: c = 0xbc; break; /* OE */
6455 case 0x0153: c = 0xbd; break; /* oe */
6456 case 0x0178: c = 0xbe; break; /* Y */
6457 case 0xa4:
6458 case 0xa6:
6459 case 0xa8:
6460 case 0xb4:
6461 case 0xb8:
6462 case 0xbc:
6463 case 0xbd:
6464 case 0xbe: c = 0x100; break; /* not in latin9 */
6465 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00006466 if (!utf_iscomposing(c)) /* skip composing chars */
6467 {
6468 if (c < 0x100)
6469 *d++ = c;
6470 else if (vcp->vc_fail)
6471 {
6472 vim_free(retval);
6473 return NULL;
6474 }
6475 else
6476 {
6477 *d++ = 0xbf;
6478 if (utf_char2cells(c) > 1)
6479 *d++ = '?';
6480 }
6481 }
6482 i += l - 1;
6483 }
6484 }
6485 *d = NUL;
6486 if (lenp != NULL)
6487 *lenp = (int)(d - retval);
6488 break;
6489
Bram Moolenaar56718732006-03-15 22:53:57 +00006490# ifdef MACOS_CONVERT
Bram Moolenaar071d4272004-06-13 20:20:40 +00006491 case CONV_MAC_LATIN1:
6492 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
Bram Moolenaarab79bcb2004-07-18 21:34:53 +00006493 'm', 'l', unconvlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006494 break;
6495
6496 case CONV_LATIN1_MAC:
6497 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
Bram Moolenaarab79bcb2004-07-18 21:34:53 +00006498 'l', 'm', unconvlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006499 break;
6500
6501 case CONV_MAC_UTF8:
6502 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
Bram Moolenaarab79bcb2004-07-18 21:34:53 +00006503 'm', 'u', unconvlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006504 break;
6505
6506 case CONV_UTF8_MAC:
6507 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
Bram Moolenaarab79bcb2004-07-18 21:34:53 +00006508 'u', 'm', unconvlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006509 break;
6510# endif
6511
6512# ifdef USE_ICONV
6513 case CONV_ICONV: /* conversion with output_conv.vc_fd */
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006514 retval = iconv_string(vcp, ptr, len, unconvlenp, lenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006515 break;
6516# endif
6517# ifdef WIN3264
6518 case CONV_CODEPAGE: /* codepage -> codepage */
6519 {
6520 int retlen;
6521 int tmp_len;
6522 short_u *tmp;
6523
6524 /* 1. codepage/UTF-8 -> ucs-2. */
6525 if (vcp->vc_cpfrom == 0)
Bram Moolenaar36f692d2008-11-20 16:10:17 +00006526 tmp_len = utf8_to_utf16(ptr, len, NULL, NULL);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006527 else
Bram Moolenaarffeedec2013-02-13 16:49:58 +01006528 {
6529 tmp_len = MultiByteToWideChar(vcp->vc_cpfrom,
6530 unconvlenp ? MB_ERR_INVALID_CHARS : 0,
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +01006531 (char *)ptr, len, 0, 0);
Bram Moolenaarffeedec2013-02-13 16:49:58 +01006532 if (tmp_len == 0
6533 && GetLastError() == ERROR_NO_UNICODE_TRANSLATION)
6534 {
6535 if (lenp != NULL)
6536 *lenp = 0;
6537 if (unconvlenp != NULL)
6538 *unconvlenp = len;
6539 retval = alloc(1);
6540 if (retval)
6541 retval[0] = NUL;
6542 return retval;
6543 }
6544 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00006545 tmp = (short_u *)alloc(sizeof(short_u) * tmp_len);
6546 if (tmp == NULL)
6547 break;
6548 if (vcp->vc_cpfrom == 0)
Bram Moolenaar36f692d2008-11-20 16:10:17 +00006549 utf8_to_utf16(ptr, len, tmp, unconvlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006550 else
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +01006551 MultiByteToWideChar(vcp->vc_cpfrom, 0,
6552 (char *)ptr, len, tmp, tmp_len);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006553
6554 /* 2. ucs-2 -> codepage/UTF-8. */
6555 if (vcp->vc_cpto == 0)
Bram Moolenaar36f692d2008-11-20 16:10:17 +00006556 retlen = utf16_to_utf8(tmp, tmp_len, NULL);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006557 else
6558 retlen = WideCharToMultiByte(vcp->vc_cpto, 0,
6559 tmp, tmp_len, 0, 0, 0, 0);
6560 retval = alloc(retlen + 1);
6561 if (retval != NULL)
6562 {
6563 if (vcp->vc_cpto == 0)
Bram Moolenaar36f692d2008-11-20 16:10:17 +00006564 utf16_to_utf8(tmp, tmp_len, retval);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006565 else
6566 WideCharToMultiByte(vcp->vc_cpto, 0,
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +01006567 tmp, tmp_len,
6568 (char *)retval, retlen, 0, 0);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006569 retval[retlen] = NUL;
6570 if (lenp != NULL)
6571 *lenp = retlen;
6572 }
6573 vim_free(tmp);
6574 break;
6575 }
6576# endif
6577 }
6578
6579 return retval;
6580}
6581#endif