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Bram Moolenaar071d4272004-06-13 20:20:40 +00001/* vi:set ts=8 sts=4 sw=4:
2 *
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)
898 return utf_class(utf_ptr2char(p));
899 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
1213/*
1214 * For UTF-8 character "c" return 2 for a double-width character, 1 for others.
1215 * Returns 4 or 6 for an unprintable character.
1216 * Is only correct for characters >= 0x80.
1217 * When p_ambw is "double", return 2 for a character with East Asian Width
1218 * class 'A'(mbiguous).
1219 */
1220 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001221utf_char2cells(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001222{
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001223 /* Sorted list of non-overlapping intervals of East Asian double width
1224 * characters, generated with ../runtime/tools/unicode.vim. */
1225 static struct interval doublewidth[] =
1226 {
1227 {0x1100, 0x115f},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001228 {0x2329, 0x232a},
1229 {0x2e80, 0x2e99},
1230 {0x2e9b, 0x2ef3},
1231 {0x2f00, 0x2fd5},
1232 {0x2ff0, 0x2ffb},
Bram Moolenaarea676722015-01-14 17:40:09 +01001233 {0x3000, 0x303e},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001234 {0x3041, 0x3096},
Bram Moolenaarea676722015-01-14 17:40:09 +01001235 {0x3099, 0x30ff},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001236 {0x3105, 0x312d},
1237 {0x3131, 0x318e},
Bram Moolenaarea676722015-01-14 17:40:09 +01001238 {0x3190, 0x31ba},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001239 {0x31c0, 0x31e3},
1240 {0x31f0, 0x321e},
1241 {0x3220, 0x3247},
1242 {0x3250, 0x32fe},
1243 {0x3300, 0x4dbf},
1244 {0x4e00, 0xa48c},
1245 {0xa490, 0xa4c6},
1246 {0xa960, 0xa97c},
1247 {0xac00, 0xd7a3},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001248 {0xf900, 0xfaff},
1249 {0xfe10, 0xfe19},
1250 {0xfe30, 0xfe52},
1251 {0xfe54, 0xfe66},
1252 {0xfe68, 0xfe6b},
1253 {0xff01, 0xff60},
1254 {0xffe0, 0xffe6},
Bram Moolenaard63aff02016-03-21 22:15:30 +01001255 {0x1b000, 0x1b001},
1256 {0x1f200, 0x1f202},
1257 {0x1f210, 0x1f23a},
1258 {0x1f240, 0x1f248},
1259 {0x1f250, 0x1f251},
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001260 {0x20000, 0x2fffd},
1261 {0x30000, 0x3fffd}
1262 };
Bram Moolenaarea676722015-01-14 17:40:09 +01001263
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01001264 /* Sorted list of non-overlapping intervals of East Asian Ambiguous
1265 * characters, generated with ../runtime/tools/unicode.vim. */
1266 static struct interval ambiguous[] =
1267 {
1268 {0x00a1, 0x00a1},
1269 {0x00a4, 0x00a4},
1270 {0x00a7, 0x00a8},
1271 {0x00aa, 0x00aa},
1272 {0x00ad, 0x00ae},
1273 {0x00b0, 0x00b4},
1274 {0x00b6, 0x00ba},
1275 {0x00bc, 0x00bf},
1276 {0x00c6, 0x00c6},
1277 {0x00d0, 0x00d0},
1278 {0x00d7, 0x00d8},
1279 {0x00de, 0x00e1},
1280 {0x00e6, 0x00e6},
1281 {0x00e8, 0x00ea},
1282 {0x00ec, 0x00ed},
1283 {0x00f0, 0x00f0},
1284 {0x00f2, 0x00f3},
1285 {0x00f7, 0x00fa},
1286 {0x00fc, 0x00fc},
1287 {0x00fe, 0x00fe},
1288 {0x0101, 0x0101},
1289 {0x0111, 0x0111},
1290 {0x0113, 0x0113},
1291 {0x011b, 0x011b},
1292 {0x0126, 0x0127},
1293 {0x012b, 0x012b},
1294 {0x0131, 0x0133},
1295 {0x0138, 0x0138},
1296 {0x013f, 0x0142},
1297 {0x0144, 0x0144},
1298 {0x0148, 0x014b},
1299 {0x014d, 0x014d},
1300 {0x0152, 0x0153},
1301 {0x0166, 0x0167},
1302 {0x016b, 0x016b},
1303 {0x01ce, 0x01ce},
1304 {0x01d0, 0x01d0},
1305 {0x01d2, 0x01d2},
1306 {0x01d4, 0x01d4},
1307 {0x01d6, 0x01d6},
1308 {0x01d8, 0x01d8},
1309 {0x01da, 0x01da},
1310 {0x01dc, 0x01dc},
1311 {0x0251, 0x0251},
1312 {0x0261, 0x0261},
1313 {0x02c4, 0x02c4},
1314 {0x02c7, 0x02c7},
1315 {0x02c9, 0x02cb},
1316 {0x02cd, 0x02cd},
1317 {0x02d0, 0x02d0},
1318 {0x02d8, 0x02db},
1319 {0x02dd, 0x02dd},
1320 {0x02df, 0x02df},
Bram Moolenaarea676722015-01-14 17:40:09 +01001321 {0x0300, 0x036f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01001322 {0x0391, 0x03a1},
1323 {0x03a3, 0x03a9},
1324 {0x03b1, 0x03c1},
1325 {0x03c3, 0x03c9},
1326 {0x0401, 0x0401},
1327 {0x0410, 0x044f},
1328 {0x0451, 0x0451},
1329 {0x2010, 0x2010},
1330 {0x2013, 0x2016},
1331 {0x2018, 0x2019},
1332 {0x201c, 0x201d},
1333 {0x2020, 0x2022},
1334 {0x2024, 0x2027},
1335 {0x2030, 0x2030},
1336 {0x2032, 0x2033},
1337 {0x2035, 0x2035},
1338 {0x203b, 0x203b},
1339 {0x203e, 0x203e},
1340 {0x2074, 0x2074},
1341 {0x207f, 0x207f},
1342 {0x2081, 0x2084},
1343 {0x20ac, 0x20ac},
1344 {0x2103, 0x2103},
1345 {0x2105, 0x2105},
1346 {0x2109, 0x2109},
1347 {0x2113, 0x2113},
1348 {0x2116, 0x2116},
1349 {0x2121, 0x2122},
1350 {0x2126, 0x2126},
1351 {0x212b, 0x212b},
1352 {0x2153, 0x2154},
1353 {0x215b, 0x215e},
1354 {0x2160, 0x216b},
1355 {0x2170, 0x2179},
1356 {0x2189, 0x2189},
1357 {0x2190, 0x2199},
1358 {0x21b8, 0x21b9},
1359 {0x21d2, 0x21d2},
1360 {0x21d4, 0x21d4},
1361 {0x21e7, 0x21e7},
1362 {0x2200, 0x2200},
1363 {0x2202, 0x2203},
1364 {0x2207, 0x2208},
1365 {0x220b, 0x220b},
1366 {0x220f, 0x220f},
1367 {0x2211, 0x2211},
1368 {0x2215, 0x2215},
1369 {0x221a, 0x221a},
1370 {0x221d, 0x2220},
1371 {0x2223, 0x2223},
1372 {0x2225, 0x2225},
1373 {0x2227, 0x222c},
1374 {0x222e, 0x222e},
1375 {0x2234, 0x2237},
1376 {0x223c, 0x223d},
1377 {0x2248, 0x2248},
1378 {0x224c, 0x224c},
1379 {0x2252, 0x2252},
1380 {0x2260, 0x2261},
1381 {0x2264, 0x2267},
1382 {0x226a, 0x226b},
1383 {0x226e, 0x226f},
1384 {0x2282, 0x2283},
1385 {0x2286, 0x2287},
1386 {0x2295, 0x2295},
1387 {0x2299, 0x2299},
1388 {0x22a5, 0x22a5},
1389 {0x22bf, 0x22bf},
1390 {0x2312, 0x2312},
1391 {0x2460, 0x24e9},
1392 {0x24eb, 0x254b},
1393 {0x2550, 0x2573},
1394 {0x2580, 0x258f},
1395 {0x2592, 0x2595},
1396 {0x25a0, 0x25a1},
1397 {0x25a3, 0x25a9},
1398 {0x25b2, 0x25b3},
1399 {0x25b6, 0x25b7},
1400 {0x25bc, 0x25bd},
1401 {0x25c0, 0x25c1},
1402 {0x25c6, 0x25c8},
1403 {0x25cb, 0x25cb},
1404 {0x25ce, 0x25d1},
1405 {0x25e2, 0x25e5},
1406 {0x25ef, 0x25ef},
1407 {0x2605, 0x2606},
1408 {0x2609, 0x2609},
1409 {0x260e, 0x260f},
1410 {0x2614, 0x2615},
1411 {0x261c, 0x261c},
1412 {0x261e, 0x261e},
1413 {0x2640, 0x2640},
1414 {0x2642, 0x2642},
1415 {0x2660, 0x2661},
1416 {0x2663, 0x2665},
1417 {0x2667, 0x266a},
1418 {0x266c, 0x266d},
1419 {0x266f, 0x266f},
1420 {0x269e, 0x269f},
1421 {0x26be, 0x26bf},
1422 {0x26c4, 0x26cd},
1423 {0x26cf, 0x26e1},
1424 {0x26e3, 0x26e3},
1425 {0x26e8, 0x26ff},
1426 {0x273d, 0x273d},
1427 {0x2757, 0x2757},
1428 {0x2776, 0x277f},
1429 {0x2b55, 0x2b59},
1430 {0x3248, 0x324f},
1431 {0xe000, 0xf8ff},
Bram Moolenaarea676722015-01-14 17:40:09 +01001432 {0xfe00, 0xfe0f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01001433 {0xfffd, 0xfffd},
1434 {0x1f100, 0x1f10a},
1435 {0x1f110, 0x1f12d},
Bram Moolenaarea676722015-01-14 17:40:09 +01001436 {0x1f130, 0x1f169},
1437 {0x1f170, 0x1f19a},
1438 {0xe0100, 0xe01ef},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01001439 {0xf0000, 0xffffd},
1440 {0x100000, 0x10fffd}
Bram Moolenaar071d4272004-06-13 20:20:40 +00001441 };
1442
Bram Moolenaarb86f10e2016-03-21 22:09:44 +01001443 /* Sorted list of non-overlapping intervals of Emoji characters that don't
1444 * have ambiguous or double width,
1445 * based on http://unicode.org/emoji/charts/emoji-list.html */
1446 static struct interval emoji_width[] =
1447 {
1448 {0x203c, 0x203c},
1449 {0x2049, 0x2049},
1450 {0x2139, 0x2139},
1451 {0x21a9, 0x21aa},
1452 {0x231a, 0x231b},
1453 {0x2328, 0x2328},
1454 {0x23cf, 0x23cf},
1455 {0x23e9, 0x23f3},
1456 {0x25aa, 0x25ab},
1457 {0x25fb, 0x25fe},
1458 {0x2600, 0x2604},
1459 {0x2611, 0x2611},
1460 {0x2618, 0x2618},
1461 {0x261d, 0x261d},
1462 {0x2620, 0x2620},
1463 {0x2622, 0x2623},
1464 {0x2626, 0x2626},
1465 {0x262a, 0x262a},
1466 {0x262e, 0x262f},
1467 {0x2638, 0x263a},
1468 {0x2648, 0x2653},
1469 {0x2666, 0x2666},
1470 {0x267b, 0x267b},
1471 {0x267f, 0x267f},
1472 {0x2692, 0x2694},
1473 {0x2696, 0x2697},
1474 {0x2699, 0x2699},
1475 {0x269b, 0x269c},
1476 {0x26a0, 0x26a1},
1477 {0x26aa, 0x26ab},
1478 {0x26b0, 0x26b1},
1479 {0x26bd, 0x26bd},
1480 {0x26ce, 0x26ce},
1481 {0x2702, 0x2702},
1482 {0x2705, 0x2705},
1483 {0x2708, 0x270d},
1484 {0x270f, 0x270f},
1485 {0x2712, 0x2712},
1486 {0x2714, 0x2714},
1487 {0x2716, 0x2716},
1488 {0x271d, 0x271d},
1489 {0x2721, 0x2721},
1490 {0x2728, 0x2728},
1491 {0x2733, 0x2734},
1492 {0x2744, 0x2744},
1493 {0x2747, 0x2747},
1494 {0x274c, 0x274c},
1495 {0x274e, 0x274e},
1496 {0x2753, 0x2755},
1497 {0x2763, 0x2764},
1498 {0x2795, 0x2797},
1499 {0x27a1, 0x27a1},
1500 {0x27b0, 0x27b0},
1501 {0x27bf, 0x27bf},
1502 {0x2934, 0x2935},
1503 {0x2b05, 0x2b07},
1504 {0x2b1b, 0x2b1c},
1505 {0x2b50, 0x2b50},
1506 {0x1f004, 0x1f004},
1507 {0x1f0cf, 0x1f0cf},
1508 {0x1f1e6, 0x1f1ff},
1509 {0x1f300, 0x1f320},
1510 {0x1f330, 0x1f335},
1511 {0x1f337, 0x1f37c},
1512 {0x1f380, 0x1f393},
1513 {0x1f3a0, 0x1f3c4},
1514 {0x1f3c6, 0x1f3ca},
1515 {0x1f3e0, 0x1f3f0},
1516 {0x1f400, 0x1f43e},
1517 {0x1f440, 0x1f440},
1518 {0x1f442, 0x1f4f7},
1519 {0x1f4f9, 0x1f4fc},
1520 {0x1f500, 0x1f53d},
1521 {0x1f550, 0x1f567},
1522 {0x1f5fb, 0x1f640},
1523 {0x1f645, 0x1f64f},
1524 {0x1f680, 0x1f6c5}
1525 };
1526
Bram Moolenaar071d4272004-06-13 20:20:40 +00001527 if (c >= 0x100)
1528 {
1529#ifdef USE_WCHAR_FUNCTIONS
1530 /*
1531 * Assume the library function wcwidth() works better than our own
1532 * stuff. It should return 1 for ambiguous width chars!
1533 */
1534 int n = wcwidth(c);
1535
1536 if (n < 0)
1537 return 6; /* unprintable, displays <xxxx> */
1538 if (n > 1)
1539 return n;
1540#else
1541 if (!utf_printable(c))
1542 return 6; /* unprintable, displays <xxxx> */
Bram Moolenaarda4d7a92010-01-27 18:29:26 +01001543 if (intable(doublewidth, sizeof(doublewidth), c))
Bram Moolenaar071d4272004-06-13 20:20:40 +00001544 return 2;
1545#endif
Bram Moolenaarb86f10e2016-03-21 22:09:44 +01001546 if (p_emoji && intable(emoji_width, sizeof(emoji_width), c))
Bram Moolenaar3848e002016-03-19 18:42:29 +01001547 return 2;
Bram Moolenaar071d4272004-06-13 20:20:40 +00001548 }
1549
1550 /* Characters below 0x100 are influenced by 'isprint' option */
1551 else if (c >= 0x80 && !vim_isprintc(c))
1552 return 4; /* unprintable, displays <xx> */
1553
1554 if (c >= 0x80 && *p_ambw == 'd' && intable(ambiguous, sizeof(ambiguous), c))
1555 return 2;
1556
1557 return 1;
1558}
1559
1560/*
1561 * mb_ptr2cells() function pointer.
1562 * Return the number of display cells character at "*p" occupies.
1563 * This doesn't take care of unprintable characters, use ptr2cells() for that.
1564 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001565 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001566latin_ptr2cells(char_u *p UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001567{
1568 return 1;
1569}
1570
1571 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001572utf_ptr2cells(
1573 char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001574{
1575 int c;
1576
1577 /* Need to convert to a wide character. */
1578 if (*p >= 0x80)
1579 {
1580 c = utf_ptr2char(p);
1581 /* An illegal byte is displayed as <xx>. */
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001582 if (utf_ptr2len(p) == 1 || c == NUL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001583 return 4;
1584 /* If the char is ASCII it must be an overlong sequence. */
1585 if (c < 0x80)
1586 return char2cells(c);
1587 return utf_char2cells(c);
1588 }
1589 return 1;
1590}
1591
1592 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001593dbcs_ptr2cells(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001594{
1595 /* Number of cells is equal to number of bytes, except for euc-jp when
1596 * the first byte is 0x8e. */
1597 if (enc_dbcs == DBCS_JPNU && *p == 0x8e)
1598 return 1;
1599 return MB_BYTE2LEN(*p);
1600}
1601
1602/*
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001603 * mb_ptr2cells_len() function pointer.
1604 * Like mb_ptr2cells(), but limit string length to "size".
1605 * For an empty string or truncated character returns 1.
1606 */
1607 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001608latin_ptr2cells_len(char_u *p UNUSED, int size UNUSED)
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001609{
1610 return 1;
1611}
1612
1613 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001614utf_ptr2cells_len(char_u *p, int size)
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001615{
1616 int c;
1617
1618 /* Need to convert to a wide character. */
1619 if (size > 0 && *p >= 0x80)
1620 {
1621 if (utf_ptr2len_len(p, size) < utf8len_tab[*p])
Bram Moolenaar24397332009-12-02 14:02:39 +00001622 return 1; /* truncated */
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001623 c = utf_ptr2char(p);
1624 /* An illegal byte is displayed as <xx>. */
1625 if (utf_ptr2len(p) == 1 || c == NUL)
1626 return 4;
1627 /* If the char is ASCII it must be an overlong sequence. */
1628 if (c < 0x80)
1629 return char2cells(c);
1630 return utf_char2cells(c);
1631 }
1632 return 1;
1633}
1634
1635 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001636dbcs_ptr2cells_len(char_u *p, int size)
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00001637{
1638 /* Number of cells is equal to number of bytes, except for euc-jp when
1639 * the first byte is 0x8e. */
1640 if (size <= 1 || (enc_dbcs == DBCS_JPNU && *p == 0x8e))
1641 return 1;
1642 return MB_BYTE2LEN(*p);
1643}
1644
1645/*
Bram Moolenaar071d4272004-06-13 20:20:40 +00001646 * mb_char2cells() function pointer.
1647 * Return the number of display cells character "c" occupies.
1648 * Only takes care of multi-byte chars, not "^C" and such.
1649 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001650 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001651latin_char2cells(int c UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001652{
1653 return 1;
1654}
1655
1656 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001657dbcs_char2cells(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001658{
1659 /* Number of cells is equal to number of bytes, except for euc-jp when
1660 * the first byte is 0x8e. */
1661 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e)
1662 return 1;
1663 /* use the first byte */
1664 return MB_BYTE2LEN((unsigned)c >> 8);
1665}
1666
1667/*
Bram Moolenaar72597a52010-07-18 15:31:08 +02001668 * Return the number of cells occupied by string "p".
1669 * Stop at a NUL character. When "len" >= 0 stop at character "p[len]".
1670 */
1671 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001672mb_string2cells(char_u *p, int len)
Bram Moolenaar72597a52010-07-18 15:31:08 +02001673{
1674 int i;
1675 int clen = 0;
1676
1677 for (i = 0; (len < 0 || i < len) && p[i] != NUL; i += (*mb_ptr2len)(p + i))
1678 clen += (*mb_ptr2cells)(p + i);
1679 return clen;
1680}
1681
1682/*
Bram Moolenaar071d4272004-06-13 20:20:40 +00001683 * mb_off2cells() function pointer.
1684 * Return number of display cells for char at ScreenLines[off].
Bram Moolenaar367329b2007-08-30 11:53:22 +00001685 * We make sure that the offset used is less than "max_off".
Bram Moolenaar071d4272004-06-13 20:20:40 +00001686 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001687 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001688latin_off2cells(unsigned off UNUSED, unsigned max_off UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001689{
1690 return 1;
1691}
1692
1693 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001694dbcs_off2cells(unsigned off, unsigned max_off)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001695{
Bram Moolenaar367329b2007-08-30 11:53:22 +00001696 /* never check beyond end of the line */
1697 if (off >= max_off)
1698 return 1;
1699
Bram Moolenaar071d4272004-06-13 20:20:40 +00001700 /* Number of cells is equal to number of bytes, except for euc-jp when
1701 * the first byte is 0x8e. */
1702 if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e)
1703 return 1;
1704 return MB_BYTE2LEN(ScreenLines[off]);
1705}
1706
1707 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001708utf_off2cells(unsigned off, unsigned max_off)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001709{
Bram Moolenaar367329b2007-08-30 11:53:22 +00001710 return (off + 1 < max_off && ScreenLines[off + 1] == 0) ? 2 : 1;
Bram Moolenaar071d4272004-06-13 20:20:40 +00001711}
1712
1713/*
1714 * mb_ptr2char() function pointer.
1715 * Convert a byte sequence into a character.
1716 */
1717 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001718latin_ptr2char(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001719{
1720 return *p;
1721}
1722
1723 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001724dbcs_ptr2char(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001725{
1726 if (MB_BYTE2LEN(*p) > 1 && p[1] != NUL)
1727 return (p[0] << 8) + p[1];
1728 return *p;
1729}
1730
1731/*
1732 * Convert a UTF-8 byte sequence to a wide character.
1733 * If the sequence is illegal or truncated by a NUL the first byte is
1734 * returned.
1735 * Does not include composing characters, of course.
1736 */
1737 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001738utf_ptr2char(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001739{
1740 int len;
1741
1742 if (p[0] < 0x80) /* be quick for ASCII */
1743 return p[0];
1744
Bram Moolenaar24397332009-12-02 14:02:39 +00001745 len = utf8len_tab_zero[p[0]];
Bram Moolenaar89bf0922008-06-29 14:16:06 +00001746 if (len > 1 && (p[1] & 0xc0) == 0x80)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001747 {
1748 if (len == 2)
1749 return ((p[0] & 0x1f) << 6) + (p[1] & 0x3f);
1750 if ((p[2] & 0xc0) == 0x80)
1751 {
1752 if (len == 3)
1753 return ((p[0] & 0x0f) << 12) + ((p[1] & 0x3f) << 6)
1754 + (p[2] & 0x3f);
1755 if ((p[3] & 0xc0) == 0x80)
1756 {
1757 if (len == 4)
1758 return ((p[0] & 0x07) << 18) + ((p[1] & 0x3f) << 12)
1759 + ((p[2] & 0x3f) << 6) + (p[3] & 0x3f);
1760 if ((p[4] & 0xc0) == 0x80)
1761 {
1762 if (len == 5)
1763 return ((p[0] & 0x03) << 24) + ((p[1] & 0x3f) << 18)
1764 + ((p[2] & 0x3f) << 12) + ((p[3] & 0x3f) << 6)
1765 + (p[4] & 0x3f);
1766 if ((p[5] & 0xc0) == 0x80 && len == 6)
1767 return ((p[0] & 0x01) << 30) + ((p[1] & 0x3f) << 24)
1768 + ((p[2] & 0x3f) << 18) + ((p[3] & 0x3f) << 12)
1769 + ((p[4] & 0x3f) << 6) + (p[5] & 0x3f);
1770 }
1771 }
1772 }
1773 }
1774 /* Illegal value, just return the first byte */
1775 return p[0];
1776}
1777
1778/*
Bram Moolenaar35ee4522011-07-15 21:16:59 +02001779 * Convert a UTF-8 byte sequence to a wide character.
1780 * String is assumed to be terminated by NUL or after "n" bytes, whichever
1781 * comes first.
1782 * The function is safe in the sense that it never accesses memory beyond the
1783 * first "n" bytes of "s".
1784 *
1785 * On success, returns decoded codepoint, advances "s" to the beginning of
1786 * next character and decreases "n" accordingly.
1787 *
1788 * If end of string was reached, returns 0 and, if "n" > 0, advances "s" past
1789 * NUL byte.
1790 *
1791 * If byte sequence is illegal or incomplete, returns -1 and does not advance
1792 * "s".
1793 */
1794 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001795utf_safe_read_char_adv(char_u **s, size_t *n)
Bram Moolenaar35ee4522011-07-15 21:16:59 +02001796{
1797 int c, k;
1798
1799 if (*n == 0) /* end of buffer */
1800 return 0;
1801
1802 k = utf8len_tab_zero[**s];
1803
1804 if (k == 1)
1805 {
1806 /* ASCII character or NUL */
1807 (*n)--;
1808 return *(*s)++;
1809 }
1810
1811 if ((size_t)k <= *n)
1812 {
1813 /* We have a multibyte sequence and it isn't truncated by buffer
1814 * limits so utf_ptr2char() is safe to use. Or the first byte is
1815 * illegal (k=0), and it's also safe to use utf_ptr2char(). */
1816 c = utf_ptr2char(*s);
1817
1818 /* On failure, utf_ptr2char() returns the first byte, so here we
1819 * check equality with the first byte. The only non-ASCII character
1820 * which equals the first byte of its own UTF-8 representation is
1821 * U+00C3 (UTF-8: 0xC3 0x83), so need to check that special case too.
1822 * It's safe even if n=1, else we would have k=2 > n. */
1823 if (c != (int)(**s) || (c == 0xC3 && (*s)[1] == 0x83))
1824 {
1825 /* byte sequence was successfully decoded */
1826 *s += k;
1827 *n -= k;
1828 return c;
1829 }
1830 }
1831
1832 /* byte sequence is incomplete or illegal */
1833 return -1;
1834}
1835
1836/*
Bram Moolenaar071d4272004-06-13 20:20:40 +00001837 * Get character at **pp and advance *pp to the next character.
1838 * Note: composing characters are skipped!
1839 */
1840 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001841mb_ptr2char_adv(char_u **pp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001842{
1843 int c;
1844
1845 c = (*mb_ptr2char)(*pp);
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001846 *pp += (*mb_ptr2len)(*pp);
1847 return c;
1848}
1849
1850/*
1851 * Get character at **pp and advance *pp to the next character.
1852 * Note: composing characters are returned as separate characters.
1853 */
1854 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001855mb_cptr2char_adv(char_u **pp)
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001856{
1857 int c;
1858
1859 c = (*mb_ptr2char)(*pp);
1860 if (enc_utf8)
1861 *pp += utf_ptr2len(*pp);
1862 else
1863 *pp += (*mb_ptr2len)(*pp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00001864 return c;
1865}
1866
1867#if defined(FEAT_ARABIC) || defined(PROTO)
1868/*
1869 * Check whether we are dealing with Arabic combining characters.
1870 * Note: these are NOT really composing characters!
1871 */
1872 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001873arabic_combine(
1874 int one, /* first character */
1875 int two) /* character just after "one" */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001876{
1877 if (one == a_LAM)
1878 return arabic_maycombine(two);
1879 return FALSE;
1880}
1881
1882/*
1883 * Check whether we are dealing with a character that could be regarded as an
1884 * Arabic combining character, need to check the character before this.
1885 */
1886 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001887arabic_maycombine(int two)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001888{
1889 if (p_arshape && !p_tbidi)
1890 return (two == a_ALEF_MADDA
1891 || two == a_ALEF_HAMZA_ABOVE
1892 || two == a_ALEF_HAMZA_BELOW
1893 || two == a_ALEF);
1894 return FALSE;
1895}
1896
1897/*
1898 * Check if the character pointed to by "p2" is a composing character when it
1899 * comes after "p1". For Arabic sometimes "ab" is replaced with "c", which
1900 * behaves like a composing character.
1901 */
1902 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001903utf_composinglike(char_u *p1, char_u *p2)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001904{
1905 int c2;
1906
1907 c2 = utf_ptr2char(p2);
1908 if (utf_iscomposing(c2))
1909 return TRUE;
1910 if (!arabic_maycombine(c2))
1911 return FALSE;
1912 return arabic_combine(utf_ptr2char(p1), c2);
1913}
1914#endif
1915
1916/*
Bram Moolenaar29466f22007-05-10 17:45:37 +00001917 * Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO
Bram Moolenaar071d4272004-06-13 20:20:40 +00001918 * composing characters.
1919 */
1920 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001921utfc_ptr2char(
1922 char_u *p,
1923 int *pcc) /* return: composing chars, last one is 0 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00001924{
1925 int len;
1926 int c;
1927 int cc;
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001928 int i = 0;
Bram Moolenaar071d4272004-06-13 20:20:40 +00001929
1930 c = utf_ptr2char(p);
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001931 len = utf_ptr2len(p);
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001932
Bram Moolenaar071d4272004-06-13 20:20:40 +00001933 /* Only accept a composing char when the first char isn't illegal. */
1934 if ((len > 1 || *p < 0x80)
1935 && p[len] >= 0x80
1936 && UTF_COMPOSINGLIKE(p, p + len))
1937 {
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001938 cc = utf_ptr2char(p + len);
1939 for (;;)
1940 {
1941 pcc[i++] = cc;
1942 if (i == MAX_MCO)
1943 break;
1944 len += utf_ptr2len(p + len);
1945 if (p[len] < 0x80 || !utf_iscomposing(cc = utf_ptr2char(p + len)))
1946 break;
1947 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00001948 }
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001949
1950 if (i < MAX_MCO) /* last composing char must be 0 */
1951 pcc[i] = 0;
1952
Bram Moolenaar071d4272004-06-13 20:20:40 +00001953 return c;
1954}
1955
1956/*
Bram Moolenaar29466f22007-05-10 17:45:37 +00001957 * Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO
Bram Moolenaar071d4272004-06-13 20:20:40 +00001958 * composing characters. Use no more than p[maxlen].
1959 */
1960 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01001961utfc_ptr2char_len(
1962 char_u *p,
1963 int *pcc, /* return: composing chars, last one is 0 */
1964 int maxlen)
Bram Moolenaar071d4272004-06-13 20:20:40 +00001965{
1966 int len;
1967 int c;
1968 int cc;
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001969 int i = 0;
Bram Moolenaar071d4272004-06-13 20:20:40 +00001970
1971 c = utf_ptr2char(p);
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00001972 len = utf_ptr2len_len(p, maxlen);
Bram Moolenaar071d4272004-06-13 20:20:40 +00001973 /* Only accept a composing char when the first char isn't illegal. */
1974 if ((len > 1 || *p < 0x80)
1975 && len < maxlen
1976 && p[len] >= 0x80
1977 && UTF_COMPOSINGLIKE(p, p + len))
1978 {
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001979 cc = utf_ptr2char(p + len);
1980 for (;;)
1981 {
1982 pcc[i++] = cc;
1983 if (i == MAX_MCO)
1984 break;
1985 len += utf_ptr2len_len(p + len, maxlen - len);
1986 if (len >= maxlen
1987 || p[len] < 0x80
1988 || !utf_iscomposing(cc = utf_ptr2char(p + len)))
1989 break;
1990 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00001991 }
Bram Moolenaar362e1a32006-03-06 23:29:24 +00001992
1993 if (i < MAX_MCO) /* last composing char must be 0 */
1994 pcc[i] = 0;
1995
Bram Moolenaar071d4272004-06-13 20:20:40 +00001996 return c;
1997}
1998
1999/*
2000 * Convert the character at screen position "off" to a sequence of bytes.
2001 * Includes the composing characters.
Bram Moolenaar9a920d82012-06-01 15:21:02 +02002002 * "buf" must at least have the length MB_MAXBYTES + 1.
Bram Moolenaarfff2bee2010-05-15 13:56:02 +02002003 * Only to be used when ScreenLinesUC[off] != 0.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002004 * Returns the produced number of bytes.
2005 */
2006 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002007utfc_char2bytes(int off, char_u *buf)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002008{
2009 int len;
Bram Moolenaar362e1a32006-03-06 23:29:24 +00002010 int i;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002011
2012 len = utf_char2bytes(ScreenLinesUC[off], buf);
Bram Moolenaar362e1a32006-03-06 23:29:24 +00002013 for (i = 0; i < Screen_mco; ++i)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002014 {
Bram Moolenaar362e1a32006-03-06 23:29:24 +00002015 if (ScreenLinesC[i][off] == 0)
2016 break;
2017 len += utf_char2bytes(ScreenLinesC[i][off], buf + len);
Bram Moolenaar071d4272004-06-13 20:20:40 +00002018 }
2019 return len;
2020}
2021
2022/*
2023 * Get the length of a UTF-8 byte sequence, not including any following
2024 * composing characters.
2025 * Returns 0 for "".
2026 * Returns 1 for an illegal byte sequence.
2027 */
2028 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002029utf_ptr2len(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002030{
2031 int len;
2032 int i;
2033
2034 if (*p == NUL)
2035 return 0;
2036 len = utf8len_tab[*p];
2037 for (i = 1; i < len; ++i)
2038 if ((p[i] & 0xc0) != 0x80)
2039 return 1;
2040 return len;
2041}
2042
2043/*
2044 * Return length of UTF-8 character, obtained from the first byte.
2045 * "b" must be between 0 and 255!
Bram Moolenaar24397332009-12-02 14:02:39 +00002046 * Returns 1 for an invalid first byte value.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002047 */
2048 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002049utf_byte2len(int b)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002050{
2051 return utf8len_tab[b];
2052}
2053
2054/*
2055 * Get the length of UTF-8 byte sequence "p[size]". Does not include any
2056 * following composing characters.
2057 * Returns 1 for "".
Bram Moolenaarc048f672008-01-04 16:47:25 +00002058 * Returns 1 for an illegal byte sequence (also in incomplete byte seq.).
Bram Moolenaar071d4272004-06-13 20:20:40 +00002059 * Returns number > "size" for an incomplete byte sequence.
Bram Moolenaar24397332009-12-02 14:02:39 +00002060 * Never returns zero.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002061 */
2062 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002063utf_ptr2len_len(char_u *p, int size)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002064{
2065 int len;
2066 int i;
Bram Moolenaarc048f672008-01-04 16:47:25 +00002067 int m;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002068
Bram Moolenaar24397332009-12-02 14:02:39 +00002069 len = utf8len_tab[*p];
2070 if (len == 1)
2071 return 1; /* NUL, ascii or illegal lead byte */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002072 if (len > size)
Bram Moolenaarc048f672008-01-04 16:47:25 +00002073 m = size; /* incomplete byte sequence. */
Bram Moolenaar24397332009-12-02 14:02:39 +00002074 else
2075 m = len;
Bram Moolenaarc048f672008-01-04 16:47:25 +00002076 for (i = 1; i < m; ++i)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002077 if ((p[i] & 0xc0) != 0x80)
2078 return 1;
2079 return len;
2080}
2081
2082/*
2083 * Return the number of bytes the UTF-8 encoding of the character at "p" takes.
2084 * This includes following composing characters.
2085 */
2086 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002087utfc_ptr2len(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002088{
2089 int len;
Bram Moolenaarc669e662005-06-08 22:00:03 +00002090 int b0 = *p;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002091#ifdef FEAT_ARABIC
2092 int prevlen;
2093#endif
2094
Bram Moolenaarc669e662005-06-08 22:00:03 +00002095 if (b0 == NUL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002096 return 0;
Bram Moolenaarc669e662005-06-08 22:00:03 +00002097 if (b0 < 0x80 && p[1] < 0x80) /* be quick for ASCII */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002098 return 1;
2099
2100 /* Skip over first UTF-8 char, stopping at a NUL byte. */
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00002101 len = utf_ptr2len(p);
Bram Moolenaar071d4272004-06-13 20:20:40 +00002102
2103 /* Check for illegal byte. */
Bram Moolenaarc669e662005-06-08 22:00:03 +00002104 if (len == 1 && b0 >= 0x80)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002105 return 1;
2106
2107 /*
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002108 * Check for composing characters. We can handle only the first six, but
Bram Moolenaar071d4272004-06-13 20:20:40 +00002109 * skip all of them (otherwise the cursor would get stuck).
2110 */
2111#ifdef FEAT_ARABIC
2112 prevlen = 0;
2113#endif
2114 for (;;)
2115 {
2116 if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len))
2117 return len;
2118
2119 /* Skip over composing char */
2120#ifdef FEAT_ARABIC
2121 prevlen = len;
2122#endif
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00002123 len += utf_ptr2len(p + len);
Bram Moolenaar071d4272004-06-13 20:20:40 +00002124 }
2125}
2126
2127/*
2128 * Return the number of bytes the UTF-8 encoding of the character at "p[size]"
2129 * takes. This includes following composing characters.
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00002130 * Returns 0 for an empty string.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002131 * Returns 1 for an illegal char or an incomplete byte sequence.
2132 */
2133 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002134utfc_ptr2len_len(char_u *p, int size)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002135{
2136 int len;
2137#ifdef FEAT_ARABIC
2138 int prevlen;
2139#endif
2140
Bram Moolenaarfeba08b2009-06-16 13:12:07 +00002141 if (size < 1 || *p == NUL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002142 return 0;
2143 if (p[0] < 0x80 && (size == 1 || p[1] < 0x80)) /* be quick for ASCII */
2144 return 1;
2145
2146 /* Skip over first UTF-8 char, stopping at a NUL byte. */
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00002147 len = utf_ptr2len_len(p, size);
Bram Moolenaar071d4272004-06-13 20:20:40 +00002148
2149 /* Check for illegal byte and incomplete byte sequence. */
2150 if ((len == 1 && p[0] >= 0x80) || len > size)
2151 return 1;
2152
2153 /*
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002154 * Check for composing characters. We can handle only the first six, but
Bram Moolenaar071d4272004-06-13 20:20:40 +00002155 * skip all of them (otherwise the cursor would get stuck).
2156 */
2157#ifdef FEAT_ARABIC
2158 prevlen = 0;
2159#endif
2160 while (len < size)
2161 {
Bram Moolenaar89bf0922008-06-29 14:16:06 +00002162 int len_next_char;
2163
2164 if (p[len] < 0x80)
2165 break;
2166
2167 /*
2168 * Next character length should not go beyond size to ensure that
2169 * UTF_COMPOSINGLIKE(...) does not read beyond size.
2170 */
2171 len_next_char = utf_ptr2len_len(p + len, size - len);
2172 if (len_next_char > size - len)
2173 break;
2174
2175 if (!UTF_COMPOSINGLIKE(p + prevlen, p + len))
Bram Moolenaar071d4272004-06-13 20:20:40 +00002176 break;
2177
2178 /* Skip over composing char */
2179#ifdef FEAT_ARABIC
2180 prevlen = len;
2181#endif
Bram Moolenaar89bf0922008-06-29 14:16:06 +00002182 len += len_next_char;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002183 }
2184 return len;
2185}
2186
2187/*
2188 * Return the number of bytes the UTF-8 encoding of character "c" takes.
2189 * This does not include composing characters.
2190 */
2191 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002192utf_char2len(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002193{
2194 if (c < 0x80)
2195 return 1;
2196 if (c < 0x800)
2197 return 2;
2198 if (c < 0x10000)
2199 return 3;
2200 if (c < 0x200000)
2201 return 4;
2202 if (c < 0x4000000)
2203 return 5;
2204 return 6;
2205}
2206
2207/*
2208 * Convert Unicode character "c" to UTF-8 string in "buf[]".
2209 * Returns the number of bytes.
2210 * This does not include composing characters.
2211 */
2212 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002213utf_char2bytes(int c, char_u *buf)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002214{
2215 if (c < 0x80) /* 7 bits */
2216 {
2217 buf[0] = c;
2218 return 1;
2219 }
2220 if (c < 0x800) /* 11 bits */
2221 {
2222 buf[0] = 0xc0 + ((unsigned)c >> 6);
2223 buf[1] = 0x80 + (c & 0x3f);
2224 return 2;
2225 }
2226 if (c < 0x10000) /* 16 bits */
2227 {
2228 buf[0] = 0xe0 + ((unsigned)c >> 12);
2229 buf[1] = 0x80 + (((unsigned)c >> 6) & 0x3f);
2230 buf[2] = 0x80 + (c & 0x3f);
2231 return 3;
2232 }
2233 if (c < 0x200000) /* 21 bits */
2234 {
2235 buf[0] = 0xf0 + ((unsigned)c >> 18);
2236 buf[1] = 0x80 + (((unsigned)c >> 12) & 0x3f);
2237 buf[2] = 0x80 + (((unsigned)c >> 6) & 0x3f);
2238 buf[3] = 0x80 + (c & 0x3f);
2239 return 4;
2240 }
2241 if (c < 0x4000000) /* 26 bits */
2242 {
2243 buf[0] = 0xf8 + ((unsigned)c >> 24);
2244 buf[1] = 0x80 + (((unsigned)c >> 18) & 0x3f);
2245 buf[2] = 0x80 + (((unsigned)c >> 12) & 0x3f);
2246 buf[3] = 0x80 + (((unsigned)c >> 6) & 0x3f);
2247 buf[4] = 0x80 + (c & 0x3f);
2248 return 5;
2249 }
2250 /* 31 bits */
2251 buf[0] = 0xfc + ((unsigned)c >> 30);
2252 buf[1] = 0x80 + (((unsigned)c >> 24) & 0x3f);
2253 buf[2] = 0x80 + (((unsigned)c >> 18) & 0x3f);
2254 buf[3] = 0x80 + (((unsigned)c >> 12) & 0x3f);
2255 buf[4] = 0x80 + (((unsigned)c >> 6) & 0x3f);
2256 buf[5] = 0x80 + (c & 0x3f);
2257 return 6;
2258}
2259
2260/*
2261 * Return TRUE if "c" is a composing UTF-8 character. This means it will be
2262 * drawn on top of the preceding character.
2263 * Based on code from Markus Kuhn.
2264 */
2265 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002266utf_iscomposing(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002267{
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002268 /* Sorted list of non-overlapping intervals.
2269 * Generated by ../runtime/tools/unicode.vim. */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002270 static struct interval combining[] =
2271 {
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002272 {0x0300, 0x036f},
2273 {0x0483, 0x0489},
2274 {0x0591, 0x05bd},
2275 {0x05bf, 0x05bf},
2276 {0x05c1, 0x05c2},
2277 {0x05c4, 0x05c5},
2278 {0x05c7, 0x05c7},
2279 {0x0610, 0x061a},
Bram Moolenaarea676722015-01-14 17:40:09 +01002280 {0x064b, 0x065f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002281 {0x0670, 0x0670},
2282 {0x06d6, 0x06dc},
Bram Moolenaarea676722015-01-14 17:40:09 +01002283 {0x06df, 0x06e4},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002284 {0x06e7, 0x06e8},
2285 {0x06ea, 0x06ed},
2286 {0x0711, 0x0711},
2287 {0x0730, 0x074a},
2288 {0x07a6, 0x07b0},
2289 {0x07eb, 0x07f3},
2290 {0x0816, 0x0819},
2291 {0x081b, 0x0823},
2292 {0x0825, 0x0827},
2293 {0x0829, 0x082d},
Bram Moolenaarea676722015-01-14 17:40:09 +01002294 {0x0859, 0x085b},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002295 {0x08e3, 0x0903},
Bram Moolenaarea676722015-01-14 17:40:09 +01002296 {0x093a, 0x093c},
2297 {0x093e, 0x094f},
2298 {0x0951, 0x0957},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002299 {0x0962, 0x0963},
2300 {0x0981, 0x0983},
2301 {0x09bc, 0x09bc},
2302 {0x09be, 0x09c4},
2303 {0x09c7, 0x09c8},
2304 {0x09cb, 0x09cd},
2305 {0x09d7, 0x09d7},
2306 {0x09e2, 0x09e3},
2307 {0x0a01, 0x0a03},
2308 {0x0a3c, 0x0a3c},
2309 {0x0a3e, 0x0a42},
2310 {0x0a47, 0x0a48},
2311 {0x0a4b, 0x0a4d},
2312 {0x0a51, 0x0a51},
2313 {0x0a70, 0x0a71},
2314 {0x0a75, 0x0a75},
2315 {0x0a81, 0x0a83},
2316 {0x0abc, 0x0abc},
2317 {0x0abe, 0x0ac5},
2318 {0x0ac7, 0x0ac9},
2319 {0x0acb, 0x0acd},
2320 {0x0ae2, 0x0ae3},
2321 {0x0b01, 0x0b03},
2322 {0x0b3c, 0x0b3c},
2323 {0x0b3e, 0x0b44},
2324 {0x0b47, 0x0b48},
2325 {0x0b4b, 0x0b4d},
2326 {0x0b56, 0x0b57},
2327 {0x0b62, 0x0b63},
2328 {0x0b82, 0x0b82},
2329 {0x0bbe, 0x0bc2},
2330 {0x0bc6, 0x0bc8},
2331 {0x0bca, 0x0bcd},
2332 {0x0bd7, 0x0bd7},
Bram Moolenaarea676722015-01-14 17:40:09 +01002333 {0x0c00, 0x0c03},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002334 {0x0c3e, 0x0c44},
2335 {0x0c46, 0x0c48},
2336 {0x0c4a, 0x0c4d},
2337 {0x0c55, 0x0c56},
2338 {0x0c62, 0x0c63},
Bram Moolenaarea676722015-01-14 17:40:09 +01002339 {0x0c81, 0x0c83},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002340 {0x0cbc, 0x0cbc},
2341 {0x0cbe, 0x0cc4},
2342 {0x0cc6, 0x0cc8},
2343 {0x0cca, 0x0ccd},
2344 {0x0cd5, 0x0cd6},
2345 {0x0ce2, 0x0ce3},
Bram Moolenaarea676722015-01-14 17:40:09 +01002346 {0x0d01, 0x0d03},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002347 {0x0d3e, 0x0d44},
2348 {0x0d46, 0x0d48},
2349 {0x0d4a, 0x0d4d},
2350 {0x0d57, 0x0d57},
2351 {0x0d62, 0x0d63},
2352 {0x0d82, 0x0d83},
2353 {0x0dca, 0x0dca},
2354 {0x0dcf, 0x0dd4},
2355 {0x0dd6, 0x0dd6},
2356 {0x0dd8, 0x0ddf},
2357 {0x0df2, 0x0df3},
2358 {0x0e31, 0x0e31},
2359 {0x0e34, 0x0e3a},
2360 {0x0e47, 0x0e4e},
2361 {0x0eb1, 0x0eb1},
2362 {0x0eb4, 0x0eb9},
2363 {0x0ebb, 0x0ebc},
2364 {0x0ec8, 0x0ecd},
2365 {0x0f18, 0x0f19},
2366 {0x0f35, 0x0f35},
2367 {0x0f37, 0x0f37},
2368 {0x0f39, 0x0f39},
2369 {0x0f3e, 0x0f3f},
2370 {0x0f71, 0x0f84},
2371 {0x0f86, 0x0f87},
Bram Moolenaarea676722015-01-14 17:40:09 +01002372 {0x0f8d, 0x0f97},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002373 {0x0f99, 0x0fbc},
2374 {0x0fc6, 0x0fc6},
2375 {0x102b, 0x103e},
2376 {0x1056, 0x1059},
2377 {0x105e, 0x1060},
2378 {0x1062, 0x1064},
2379 {0x1067, 0x106d},
2380 {0x1071, 0x1074},
2381 {0x1082, 0x108d},
2382 {0x108f, 0x108f},
2383 {0x109a, 0x109d},
Bram Moolenaarea676722015-01-14 17:40:09 +01002384 {0x135d, 0x135f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002385 {0x1712, 0x1714},
2386 {0x1732, 0x1734},
2387 {0x1752, 0x1753},
2388 {0x1772, 0x1773},
Bram Moolenaarea676722015-01-14 17:40:09 +01002389 {0x17b4, 0x17d3},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002390 {0x17dd, 0x17dd},
2391 {0x180b, 0x180d},
2392 {0x18a9, 0x18a9},
2393 {0x1920, 0x192b},
2394 {0x1930, 0x193b},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002395 {0x1a17, 0x1a1b},
2396 {0x1a55, 0x1a5e},
2397 {0x1a60, 0x1a7c},
2398 {0x1a7f, 0x1a7f},
Bram Moolenaarea676722015-01-14 17:40:09 +01002399 {0x1ab0, 0x1abe},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002400 {0x1b00, 0x1b04},
2401 {0x1b34, 0x1b44},
2402 {0x1b6b, 0x1b73},
2403 {0x1b80, 0x1b82},
Bram Moolenaarea676722015-01-14 17:40:09 +01002404 {0x1ba1, 0x1bad},
2405 {0x1be6, 0x1bf3},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002406 {0x1c24, 0x1c37},
2407 {0x1cd0, 0x1cd2},
2408 {0x1cd4, 0x1ce8},
2409 {0x1ced, 0x1ced},
Bram Moolenaarea676722015-01-14 17:40:09 +01002410 {0x1cf2, 0x1cf4},
2411 {0x1cf8, 0x1cf9},
2412 {0x1dc0, 0x1df5},
2413 {0x1dfc, 0x1dff},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002414 {0x20d0, 0x20f0},
2415 {0x2cef, 0x2cf1},
Bram Moolenaarea676722015-01-14 17:40:09 +01002416 {0x2d7f, 0x2d7f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002417 {0x2de0, 0x2dff},
2418 {0x302a, 0x302f},
2419 {0x3099, 0x309a},
2420 {0xa66f, 0xa672},
Bram Moolenaarea676722015-01-14 17:40:09 +01002421 {0xa674, 0xa67d},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002422 {0xa69e, 0xa69f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002423 {0xa6f0, 0xa6f1},
2424 {0xa802, 0xa802},
2425 {0xa806, 0xa806},
2426 {0xa80b, 0xa80b},
2427 {0xa823, 0xa827},
2428 {0xa880, 0xa881},
2429 {0xa8b4, 0xa8c4},
2430 {0xa8e0, 0xa8f1},
2431 {0xa926, 0xa92d},
2432 {0xa947, 0xa953},
2433 {0xa980, 0xa983},
2434 {0xa9b3, 0xa9c0},
Bram Moolenaarea676722015-01-14 17:40:09 +01002435 {0xa9e5, 0xa9e5},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002436 {0xaa29, 0xaa36},
2437 {0xaa43, 0xaa43},
2438 {0xaa4c, 0xaa4d},
Bram Moolenaarea676722015-01-14 17:40:09 +01002439 {0xaa7b, 0xaa7d},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002440 {0xaab0, 0xaab0},
2441 {0xaab2, 0xaab4},
2442 {0xaab7, 0xaab8},
2443 {0xaabe, 0xaabf},
2444 {0xaac1, 0xaac1},
Bram Moolenaarea676722015-01-14 17:40:09 +01002445 {0xaaeb, 0xaaef},
2446 {0xaaf5, 0xaaf6},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002447 {0xabe3, 0xabea},
2448 {0xabec, 0xabed},
2449 {0xfb1e, 0xfb1e},
2450 {0xfe00, 0xfe0f},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002451 {0xfe20, 0xfe2f},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002452 {0x101fd, 0x101fd},
Bram Moolenaarea676722015-01-14 17:40:09 +01002453 {0x102e0, 0x102e0},
2454 {0x10376, 0x1037a},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002455 {0x10a01, 0x10a03},
2456 {0x10a05, 0x10a06},
2457 {0x10a0c, 0x10a0f},
2458 {0x10a38, 0x10a3a},
2459 {0x10a3f, 0x10a3f},
Bram Moolenaarea676722015-01-14 17:40:09 +01002460 {0x10ae5, 0x10ae6},
2461 {0x11000, 0x11002},
2462 {0x11038, 0x11046},
2463 {0x1107f, 0x11082},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002464 {0x110b0, 0x110ba},
Bram Moolenaarea676722015-01-14 17:40:09 +01002465 {0x11100, 0x11102},
2466 {0x11127, 0x11134},
2467 {0x11173, 0x11173},
2468 {0x11180, 0x11182},
2469 {0x111b3, 0x111c0},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002470 {0x111ca, 0x111cc},
Bram Moolenaarea676722015-01-14 17:40:09 +01002471 {0x1122c, 0x11237},
2472 {0x112df, 0x112ea},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002473 {0x11300, 0x11303},
Bram Moolenaarea676722015-01-14 17:40:09 +01002474 {0x1133c, 0x1133c},
2475 {0x1133e, 0x11344},
2476 {0x11347, 0x11348},
2477 {0x1134b, 0x1134d},
2478 {0x11357, 0x11357},
2479 {0x11362, 0x11363},
2480 {0x11366, 0x1136c},
2481 {0x11370, 0x11374},
2482 {0x114b0, 0x114c3},
2483 {0x115af, 0x115b5},
2484 {0x115b8, 0x115c0},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002485 {0x115dc, 0x115dd},
Bram Moolenaarea676722015-01-14 17:40:09 +01002486 {0x11630, 0x11640},
2487 {0x116ab, 0x116b7},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002488 {0x1171d, 0x1172b},
Bram Moolenaarea676722015-01-14 17:40:09 +01002489 {0x16af0, 0x16af4},
2490 {0x16b30, 0x16b36},
2491 {0x16f51, 0x16f7e},
2492 {0x16f8f, 0x16f92},
2493 {0x1bc9d, 0x1bc9e},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002494 {0x1d165, 0x1d169},
2495 {0x1d16d, 0x1d172},
2496 {0x1d17b, 0x1d182},
2497 {0x1d185, 0x1d18b},
2498 {0x1d1aa, 0x1d1ad},
2499 {0x1d242, 0x1d244},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002500 {0x1da00, 0x1da36},
2501 {0x1da3b, 0x1da6c},
2502 {0x1da75, 0x1da75},
2503 {0x1da84, 0x1da84},
2504 {0x1da9b, 0x1da9f},
2505 {0x1daa1, 0x1daaf},
Bram Moolenaarea676722015-01-14 17:40:09 +01002506 {0x1e8d0, 0x1e8d6},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002507 {0xe0100, 0xe01ef}
Bram Moolenaar071d4272004-06-13 20:20:40 +00002508 };
2509
2510 return intable(combining, sizeof(combining), c);
2511}
2512
2513/*
2514 * Return TRUE for characters that can be displayed in a normal way.
2515 * Only for characters of 0x100 and above!
2516 */
2517 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002518utf_printable(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002519{
2520#ifdef USE_WCHAR_FUNCTIONS
2521 /*
2522 * Assume the iswprint() library function works better than our own stuff.
2523 */
2524 return iswprint(c);
2525#else
2526 /* Sorted list of non-overlapping intervals.
2527 * 0xd800-0xdfff is reserved for UTF-16, actually illegal. */
2528 static struct interval nonprint[] =
2529 {
2530 {0x070f, 0x070f}, {0x180b, 0x180e}, {0x200b, 0x200f}, {0x202a, 0x202e},
2531 {0x206a, 0x206f}, {0xd800, 0xdfff}, {0xfeff, 0xfeff}, {0xfff9, 0xfffb},
2532 {0xfffe, 0xffff}
2533 };
2534
2535 return !intable(nonprint, sizeof(nonprint), c);
2536#endif
2537}
2538
2539/*
2540 * Get class of a Unicode character.
2541 * 0: white space
2542 * 1: punctuation
2543 * 2 or bigger: some class of word character.
2544 */
2545 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002546utf_class(int c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002547{
2548 /* sorted list of non-overlapping intervals */
2549 static struct clinterval
2550 {
Bram Moolenaarcc63c642013-11-12 04:44:01 +01002551 unsigned int first;
2552 unsigned int last;
2553 unsigned int class;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002554 } classes[] =
2555 {
2556 {0x037e, 0x037e, 1}, /* Greek question mark */
2557 {0x0387, 0x0387, 1}, /* Greek ano teleia */
2558 {0x055a, 0x055f, 1}, /* Armenian punctuation */
2559 {0x0589, 0x0589, 1}, /* Armenian full stop */
2560 {0x05be, 0x05be, 1},
2561 {0x05c0, 0x05c0, 1},
2562 {0x05c3, 0x05c3, 1},
2563 {0x05f3, 0x05f4, 1},
2564 {0x060c, 0x060c, 1},
2565 {0x061b, 0x061b, 1},
2566 {0x061f, 0x061f, 1},
2567 {0x066a, 0x066d, 1},
2568 {0x06d4, 0x06d4, 1},
2569 {0x0700, 0x070d, 1}, /* Syriac punctuation */
2570 {0x0964, 0x0965, 1},
2571 {0x0970, 0x0970, 1},
2572 {0x0df4, 0x0df4, 1},
2573 {0x0e4f, 0x0e4f, 1},
2574 {0x0e5a, 0x0e5b, 1},
2575 {0x0f04, 0x0f12, 1},
2576 {0x0f3a, 0x0f3d, 1},
2577 {0x0f85, 0x0f85, 1},
2578 {0x104a, 0x104f, 1}, /* Myanmar punctuation */
2579 {0x10fb, 0x10fb, 1}, /* Georgian punctuation */
2580 {0x1361, 0x1368, 1}, /* Ethiopic punctuation */
2581 {0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
2582 {0x1680, 0x1680, 0},
2583 {0x169b, 0x169c, 1},
2584 {0x16eb, 0x16ed, 1},
2585 {0x1735, 0x1736, 1},
2586 {0x17d4, 0x17dc, 1}, /* Khmer punctuation */
2587 {0x1800, 0x180a, 1}, /* Mongolian punctuation */
2588 {0x2000, 0x200b, 0}, /* spaces */
2589 {0x200c, 0x2027, 1}, /* punctuation and symbols */
2590 {0x2028, 0x2029, 0},
2591 {0x202a, 0x202e, 1}, /* punctuation and symbols */
2592 {0x202f, 0x202f, 0},
2593 {0x2030, 0x205e, 1}, /* punctuation and symbols */
2594 {0x205f, 0x205f, 0},
2595 {0x2060, 0x27ff, 1}, /* punctuation and symbols */
2596 {0x2070, 0x207f, 0x2070}, /* superscript */
Bram Moolenaarbbb79722008-06-04 09:00:32 +00002597 {0x2080, 0x2094, 0x2080}, /* subscript */
2598 {0x20a0, 0x27ff, 1}, /* all kinds of symbols */
2599 {0x2800, 0x28ff, 0x2800}, /* braille */
2600 {0x2900, 0x2998, 1}, /* arrows, brackets, etc. */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002601 {0x29d8, 0x29db, 1},
2602 {0x29fc, 0x29fd, 1},
Bram Moolenaar103650d2014-09-15 14:25:54 +02002603 {0x2e00, 0x2e7f, 1}, /* supplemental punctuation */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002604 {0x3000, 0x3000, 0}, /* ideographic space */
2605 {0x3001, 0x3020, 1}, /* ideographic punctuation */
2606 {0x3030, 0x3030, 1},
2607 {0x303d, 0x303d, 1},
2608 {0x3040, 0x309f, 0x3040}, /* Hiragana */
2609 {0x30a0, 0x30ff, 0x30a0}, /* Katakana */
2610 {0x3300, 0x9fff, 0x4e00}, /* CJK Ideographs */
2611 {0xac00, 0xd7a3, 0xac00}, /* Hangul Syllables */
2612 {0xf900, 0xfaff, 0x4e00}, /* CJK Ideographs */
2613 {0xfd3e, 0xfd3f, 1},
2614 {0xfe30, 0xfe6b, 1}, /* punctuation forms */
2615 {0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
2616 {0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
2617 {0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
2618 {0xff5b, 0xff65, 1}, /* half/fullwidth ASCII */
Bram Moolenaarcc63c642013-11-12 04:44:01 +01002619 {0x20000, 0x2a6df, 0x4e00}, /* CJK Ideographs */
2620 {0x2a700, 0x2b73f, 0x4e00}, /* CJK Ideographs */
2621 {0x2b740, 0x2b81f, 0x4e00}, /* CJK Ideographs */
2622 {0x2f800, 0x2fa1f, 0x4e00}, /* CJK Ideographs */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002623 };
Bram Moolenaarb86f10e2016-03-21 22:09:44 +01002624
2625 /* Sorted list of non-overlapping intervals of all Emoji characters,
2626 * based on http://unicode.org/emoji/charts/emoji-list.html */
2627 static struct interval emoji_all[] =
2628 {
2629 {0x203c, 0x203c},
2630 {0x2049, 0x2049},
2631 {0x2122, 0x2122},
2632 {0x2139, 0x2139},
2633 {0x2194, 0x2199},
2634 {0x21a9, 0x21aa},
2635 {0x231a, 0x231b},
2636 {0x2328, 0x2328},
2637 {0x23cf, 0x23cf},
2638 {0x23e9, 0x23f3},
2639 {0x24c2, 0x24c2},
2640 {0x25aa, 0x25ab},
2641 {0x25b6, 0x25b6},
2642 {0x25c0, 0x25c0},
2643 {0x25fb, 0x25fe},
2644 {0x2600, 0x2604},
2645 {0x260e, 0x260e},
2646 {0x2611, 0x2611},
2647 {0x2614, 0x2615},
2648 {0x2618, 0x2618},
2649 {0x261d, 0x261d},
2650 {0x2620, 0x2620},
2651 {0x2622, 0x2623},
2652 {0x2626, 0x2626},
2653 {0x262a, 0x262a},
2654 {0x262e, 0x262f},
2655 {0x2638, 0x263a},
2656 {0x2648, 0x2653},
2657 {0x2660, 0x2660},
2658 {0x2663, 0x2663},
2659 {0x2665, 0x2666},
2660 {0x2668, 0x2668},
2661 {0x267b, 0x267b},
2662 {0x267f, 0x267f},
2663 {0x2692, 0x2694},
2664 {0x2696, 0x2697},
2665 {0x2699, 0x2699},
2666 {0x269b, 0x269c},
2667 {0x26a0, 0x26a1},
2668 {0x26aa, 0x26ab},
2669 {0x26b0, 0x26b1},
2670 {0x26bd, 0x26be},
2671 {0x26c4, 0x26c5},
2672 {0x26c8, 0x26c8},
2673 {0x26ce, 0x26cf},
2674 {0x26d1, 0x26d1},
2675 {0x26d3, 0x26d4},
2676 {0x26e9, 0x26ea},
2677 {0x26f0, 0x26f5},
2678 {0x26f7, 0x26fa},
2679 {0x26fd, 0x26fd},
2680 {0x2702, 0x2702},
2681 {0x2705, 0x2705},
2682 {0x2708, 0x270d},
2683 {0x270f, 0x270f},
2684 {0x2712, 0x2712},
2685 {0x2714, 0x2714},
2686 {0x2716, 0x2716},
2687 {0x271d, 0x271d},
2688 {0x2721, 0x2721},
2689 {0x2728, 0x2728},
2690 {0x2733, 0x2734},
2691 {0x2744, 0x2744},
2692 {0x2747, 0x2747},
2693 {0x274c, 0x274c},
2694 {0x274e, 0x274e},
2695 {0x2753, 0x2755},
2696 {0x2757, 0x2757},
2697 {0x2763, 0x2764},
2698 {0x2795, 0x2797},
2699 {0x27a1, 0x27a1},
2700 {0x27b0, 0x27b0},
2701 {0x27bf, 0x27bf},
2702 {0x2934, 0x2935},
2703 {0x2b05, 0x2b07},
2704 {0x2b1b, 0x2b1c},
2705 {0x2b50, 0x2b50},
2706 {0x2b55, 0x2b55},
2707 {0x3030, 0x3030},
2708 {0x303d, 0x303d},
2709 {0x3297, 0x3297},
2710 {0x3299, 0x3299},
2711 {0x1f004, 0x1f004},
2712 {0x1f0cf, 0x1f0cf},
2713 {0x1f170, 0x1f171},
2714 {0x1f17e, 0x1f17f},
2715 {0x1f18e, 0x1f18e},
2716 {0x1f191, 0x1f19a},
2717 {0x1f1e6, 0x1f1ff},
2718 {0x1f201, 0x1f202},
2719 {0x1f21a, 0x1f21a},
2720 {0x1f22f, 0x1f22f},
2721 {0x1f232, 0x1f23a},
2722 {0x1f250, 0x1f251},
2723 {0x1f300, 0x1f320},
2724 {0x1f330, 0x1f335},
2725 {0x1f337, 0x1f37c},
2726 {0x1f380, 0x1f393},
2727 {0x1f3a0, 0x1f3c4},
2728 {0x1f3c6, 0x1f3ca},
2729 {0x1f3e0, 0x1f3f0},
2730 {0x1f400, 0x1f43e},
2731 {0x1f440, 0x1f440},
2732 {0x1f442, 0x1f4f7},
2733 {0x1f4f9, 0x1f4fc},
2734 {0x1f500, 0x1f53d},
2735 {0x1f550, 0x1f567},
2736 {0x1f5fb, 0x1f640},
2737 {0x1f645, 0x1f64f},
2738 {0x1f680, 0x1f6c5}
2739 };
2740
Bram Moolenaar071d4272004-06-13 20:20:40 +00002741 int bot = 0;
2742 int top = sizeof(classes) / sizeof(struct clinterval) - 1;
2743 int mid;
2744
2745 /* First quick check for Latin1 characters, use 'iskeyword'. */
2746 if (c < 0x100)
2747 {
Bram Moolenaarf7bbbc52005-06-17 21:55:00 +00002748 if (c == ' ' || c == '\t' || c == NUL || c == 0xa0)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002749 return 0; /* blank */
2750 if (vim_iswordc(c))
2751 return 2; /* word character */
2752 return 1; /* punctuation */
2753 }
2754
2755 /* binary search in table */
2756 while (top >= bot)
2757 {
2758 mid = (bot + top) / 2;
Bram Moolenaarcc63c642013-11-12 04:44:01 +01002759 if (classes[mid].last < (unsigned int)c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002760 bot = mid + 1;
Bram Moolenaarcc63c642013-11-12 04:44:01 +01002761 else if (classes[mid].first > (unsigned int)c)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002762 top = mid - 1;
2763 else
2764 return (int)classes[mid].class;
2765 }
2766
Bram Moolenaar4077b332016-03-20 18:15:21 +01002767 /* emoji */
Bram Moolenaarb86f10e2016-03-21 22:09:44 +01002768 if (intable(emoji_all, sizeof(emoji_all), c))
Bram Moolenaar4077b332016-03-20 18:15:21 +01002769 return 3;
2770
Bram Moolenaar071d4272004-06-13 20:20:40 +00002771 /* most other characters are "word" characters */
2772 return 2;
2773}
2774
2775/*
2776 * Code for Unicode case-dependent operations. Based on notes in
2777 * http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
2778 * This code uses simple case folding, not full case folding.
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002779 * Last updated for Unicode 5.2.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002780 */
2781
2782/*
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002783 * The following tables are built by ../runtime/tools/unicode.vim.
2784 * They must be in numeric order, because we use binary search.
2785 * An entry such as {0x41,0x5a,1,32} means that Unicode characters in the
2786 * range from 0x41 to 0x5a inclusive, stepping by 1, are changed to
2787 * folded/upper/lower by adding 32.
Bram Moolenaar071d4272004-06-13 20:20:40 +00002788 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00002789typedef struct
2790{
2791 int rangeStart;
2792 int rangeEnd;
2793 int step;
2794 int offset;
2795} convertStruct;
2796
Bram Moolenaard6f676d2005-06-01 21:51:55 +00002797static convertStruct foldCase[] =
Bram Moolenaar071d4272004-06-13 20:20:40 +00002798{
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002799 {0x41,0x5a,1,32},
2800 {0xb5,0xb5,-1,775},
2801 {0xc0,0xd6,1,32},
2802 {0xd8,0xde,1,32},
2803 {0x100,0x12e,2,1},
2804 {0x132,0x136,2,1},
2805 {0x139,0x147,2,1},
2806 {0x14a,0x176,2,1},
2807 {0x178,0x178,-1,-121},
2808 {0x179,0x17d,2,1},
2809 {0x17f,0x17f,-1,-268},
2810 {0x181,0x181,-1,210},
2811 {0x182,0x184,2,1},
2812 {0x186,0x186,-1,206},
2813 {0x187,0x187,-1,1},
2814 {0x189,0x18a,1,205},
2815 {0x18b,0x18b,-1,1},
2816 {0x18e,0x18e,-1,79},
2817 {0x18f,0x18f,-1,202},
2818 {0x190,0x190,-1,203},
2819 {0x191,0x191,-1,1},
2820 {0x193,0x193,-1,205},
2821 {0x194,0x194,-1,207},
2822 {0x196,0x196,-1,211},
2823 {0x197,0x197,-1,209},
2824 {0x198,0x198,-1,1},
2825 {0x19c,0x19c,-1,211},
2826 {0x19d,0x19d,-1,213},
2827 {0x19f,0x19f,-1,214},
2828 {0x1a0,0x1a4,2,1},
2829 {0x1a6,0x1a6,-1,218},
2830 {0x1a7,0x1a7,-1,1},
2831 {0x1a9,0x1a9,-1,218},
2832 {0x1ac,0x1ac,-1,1},
2833 {0x1ae,0x1ae,-1,218},
2834 {0x1af,0x1af,-1,1},
2835 {0x1b1,0x1b2,1,217},
2836 {0x1b3,0x1b5,2,1},
2837 {0x1b7,0x1b7,-1,219},
2838 {0x1b8,0x1bc,4,1},
2839 {0x1c4,0x1c4,-1,2},
2840 {0x1c5,0x1c5,-1,1},
2841 {0x1c7,0x1c7,-1,2},
2842 {0x1c8,0x1c8,-1,1},
2843 {0x1ca,0x1ca,-1,2},
2844 {0x1cb,0x1db,2,1},
2845 {0x1de,0x1ee,2,1},
2846 {0x1f1,0x1f1,-1,2},
2847 {0x1f2,0x1f4,2,1},
2848 {0x1f6,0x1f6,-1,-97},
2849 {0x1f7,0x1f7,-1,-56},
2850 {0x1f8,0x21e,2,1},
2851 {0x220,0x220,-1,-130},
2852 {0x222,0x232,2,1},
2853 {0x23a,0x23a,-1,10795},
2854 {0x23b,0x23b,-1,1},
2855 {0x23d,0x23d,-1,-163},
2856 {0x23e,0x23e,-1,10792},
2857 {0x241,0x241,-1,1},
2858 {0x243,0x243,-1,-195},
2859 {0x244,0x244,-1,69},
2860 {0x245,0x245,-1,71},
2861 {0x246,0x24e,2,1},
2862 {0x345,0x345,-1,116},
2863 {0x370,0x372,2,1},
2864 {0x376,0x376,-1,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01002865 {0x37f,0x37f,-1,116},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002866 {0x386,0x386,-1,38},
2867 {0x388,0x38a,1,37},
2868 {0x38c,0x38c,-1,64},
2869 {0x38e,0x38f,1,63},
2870 {0x391,0x3a1,1,32},
2871 {0x3a3,0x3ab,1,32},
2872 {0x3c2,0x3c2,-1,1},
2873 {0x3cf,0x3cf,-1,8},
2874 {0x3d0,0x3d0,-1,-30},
2875 {0x3d1,0x3d1,-1,-25},
2876 {0x3d5,0x3d5,-1,-15},
2877 {0x3d6,0x3d6,-1,-22},
2878 {0x3d8,0x3ee,2,1},
2879 {0x3f0,0x3f0,-1,-54},
2880 {0x3f1,0x3f1,-1,-48},
2881 {0x3f4,0x3f4,-1,-60},
2882 {0x3f5,0x3f5,-1,-64},
2883 {0x3f7,0x3f7,-1,1},
2884 {0x3f9,0x3f9,-1,-7},
2885 {0x3fa,0x3fa,-1,1},
2886 {0x3fd,0x3ff,1,-130},
2887 {0x400,0x40f,1,80},
2888 {0x410,0x42f,1,32},
2889 {0x460,0x480,2,1},
2890 {0x48a,0x4be,2,1},
2891 {0x4c0,0x4c0,-1,15},
2892 {0x4c1,0x4cd,2,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01002893 {0x4d0,0x52e,2,1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002894 {0x531,0x556,1,48},
2895 {0x10a0,0x10c5,1,7264},
Bram Moolenaarea676722015-01-14 17:40:09 +01002896 {0x10c7,0x10cd,6,7264},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002897 {0x13f8,0x13fd,1,-8},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002898 {0x1e00,0x1e94,2,1},
2899 {0x1e9b,0x1e9b,-1,-58},
2900 {0x1e9e,0x1e9e,-1,-7615},
2901 {0x1ea0,0x1efe,2,1},
2902 {0x1f08,0x1f0f,1,-8},
2903 {0x1f18,0x1f1d,1,-8},
2904 {0x1f28,0x1f2f,1,-8},
2905 {0x1f38,0x1f3f,1,-8},
2906 {0x1f48,0x1f4d,1,-8},
2907 {0x1f59,0x1f5f,2,-8},
2908 {0x1f68,0x1f6f,1,-8},
2909 {0x1f88,0x1f8f,1,-8},
2910 {0x1f98,0x1f9f,1,-8},
2911 {0x1fa8,0x1faf,1,-8},
2912 {0x1fb8,0x1fb9,1,-8},
2913 {0x1fba,0x1fbb,1,-74},
2914 {0x1fbc,0x1fbc,-1,-9},
2915 {0x1fbe,0x1fbe,-1,-7173},
2916 {0x1fc8,0x1fcb,1,-86},
2917 {0x1fcc,0x1fcc,-1,-9},
2918 {0x1fd8,0x1fd9,1,-8},
2919 {0x1fda,0x1fdb,1,-100},
2920 {0x1fe8,0x1fe9,1,-8},
2921 {0x1fea,0x1feb,1,-112},
2922 {0x1fec,0x1fec,-1,-7},
2923 {0x1ff8,0x1ff9,1,-128},
2924 {0x1ffa,0x1ffb,1,-126},
2925 {0x1ffc,0x1ffc,-1,-9},
2926 {0x2126,0x2126,-1,-7517},
2927 {0x212a,0x212a,-1,-8383},
2928 {0x212b,0x212b,-1,-8262},
2929 {0x2132,0x2132,-1,28},
2930 {0x2160,0x216f,1,16},
2931 {0x2183,0x2183,-1,1},
2932 {0x24b6,0x24cf,1,26},
2933 {0x2c00,0x2c2e,1,48},
2934 {0x2c60,0x2c60,-1,1},
2935 {0x2c62,0x2c62,-1,-10743},
2936 {0x2c63,0x2c63,-1,-3814},
2937 {0x2c64,0x2c64,-1,-10727},
2938 {0x2c67,0x2c6b,2,1},
2939 {0x2c6d,0x2c6d,-1,-10780},
2940 {0x2c6e,0x2c6e,-1,-10749},
2941 {0x2c6f,0x2c6f,-1,-10783},
2942 {0x2c70,0x2c70,-1,-10782},
2943 {0x2c72,0x2c75,3,1},
2944 {0x2c7e,0x2c7f,1,-10815},
2945 {0x2c80,0x2ce2,2,1},
2946 {0x2ceb,0x2ced,2,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01002947 {0x2cf2,0xa640,31054,1},
2948 {0xa642,0xa66c,2,1},
2949 {0xa680,0xa69a,2,1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002950 {0xa722,0xa72e,2,1},
2951 {0xa732,0xa76e,2,1},
2952 {0xa779,0xa77b,2,1},
2953 {0xa77d,0xa77d,-1,-35332},
2954 {0xa77e,0xa786,2,1},
2955 {0xa78b,0xa78b,-1,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01002956 {0xa78d,0xa78d,-1,-42280},
2957 {0xa790,0xa792,2,1},
2958 {0xa796,0xa7a8,2,1},
2959 {0xa7aa,0xa7aa,-1,-42308},
2960 {0xa7ab,0xa7ab,-1,-42319},
2961 {0xa7ac,0xa7ac,-1,-42315},
2962 {0xa7ad,0xa7ad,-1,-42305},
2963 {0xa7b0,0xa7b0,-1,-42258},
2964 {0xa7b1,0xa7b1,-1,-42282},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002965 {0xa7b2,0xa7b2,-1,-42261},
2966 {0xa7b3,0xa7b3,-1,928},
2967 {0xa7b4,0xa7b6,2,1},
2968 {0xab70,0xabbf,1,-38864},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01002969 {0xff21,0xff3a,1,32},
Bram Moolenaarea676722015-01-14 17:40:09 +01002970 {0x10400,0x10427,1,40},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02002971 {0x10c80,0x10cb2,1,64},
Bram Moolenaarea676722015-01-14 17:40:09 +01002972 {0x118a0,0x118bf,1,32}
Bram Moolenaar071d4272004-06-13 20:20:40 +00002973};
2974
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +01002975static int utf_convert(int a, convertStruct table[], int tableSize);
2976static int utf_strnicmp(char_u *s1, char_u *s2, size_t n1, size_t n2);
Bram Moolenaar071d4272004-06-13 20:20:40 +00002977
2978/*
2979 * Generic conversion function for case operations.
2980 * Return the converted equivalent of "a", which is a UCS-4 character. Use
2981 * the given conversion "table". Uses binary search on "table".
2982 */
2983 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01002984utf_convert(
2985 int a,
2986 convertStruct table[],
2987 int tableSize)
Bram Moolenaar071d4272004-06-13 20:20:40 +00002988{
2989 int start, mid, end; /* indices into table */
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01002990 int entries = tableSize / sizeof(convertStruct);
Bram Moolenaar071d4272004-06-13 20:20:40 +00002991
2992 start = 0;
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01002993 end = entries;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002994 while (start < end)
2995 {
2996 /* need to search further */
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01002997 mid = (end + start) / 2;
Bram Moolenaar071d4272004-06-13 20:20:40 +00002998 if (table[mid].rangeEnd < a)
2999 start = mid + 1;
3000 else
3001 end = mid;
3002 }
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003003 if (start < entries
3004 && table[start].rangeStart <= a
3005 && a <= table[start].rangeEnd
Bram Moolenaar071d4272004-06-13 20:20:40 +00003006 && (a - table[start].rangeStart) % table[start].step == 0)
3007 return (a + table[start].offset);
3008 else
3009 return a;
3010}
3011
3012/*
3013 * Return the folded-case equivalent of "a", which is a UCS-4 character. Uses
3014 * simple case folding.
3015 */
3016 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003017utf_fold(int a)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003018{
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003019 return utf_convert(a, foldCase, (int)sizeof(foldCase));
Bram Moolenaar071d4272004-06-13 20:20:40 +00003020}
3021
Bram Moolenaard6f676d2005-06-01 21:51:55 +00003022static convertStruct toLower[] =
Bram Moolenaar071d4272004-06-13 20:20:40 +00003023{
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003024 {0x41,0x5a,1,32},
3025 {0xc0,0xd6,1,32},
3026 {0xd8,0xde,1,32},
3027 {0x100,0x12e,2,1},
3028 {0x130,0x130,-1,-199},
3029 {0x132,0x136,2,1},
3030 {0x139,0x147,2,1},
3031 {0x14a,0x176,2,1},
3032 {0x178,0x178,-1,-121},
3033 {0x179,0x17d,2,1},
3034 {0x181,0x181,-1,210},
3035 {0x182,0x184,2,1},
3036 {0x186,0x186,-1,206},
3037 {0x187,0x187,-1,1},
3038 {0x189,0x18a,1,205},
3039 {0x18b,0x18b,-1,1},
3040 {0x18e,0x18e,-1,79},
3041 {0x18f,0x18f,-1,202},
3042 {0x190,0x190,-1,203},
3043 {0x191,0x191,-1,1},
3044 {0x193,0x193,-1,205},
3045 {0x194,0x194,-1,207},
3046 {0x196,0x196,-1,211},
3047 {0x197,0x197,-1,209},
3048 {0x198,0x198,-1,1},
3049 {0x19c,0x19c,-1,211},
3050 {0x19d,0x19d,-1,213},
3051 {0x19f,0x19f,-1,214},
3052 {0x1a0,0x1a4,2,1},
3053 {0x1a6,0x1a6,-1,218},
3054 {0x1a7,0x1a7,-1,1},
3055 {0x1a9,0x1a9,-1,218},
3056 {0x1ac,0x1ac,-1,1},
3057 {0x1ae,0x1ae,-1,218},
3058 {0x1af,0x1af,-1,1},
3059 {0x1b1,0x1b2,1,217},
3060 {0x1b3,0x1b5,2,1},
3061 {0x1b7,0x1b7,-1,219},
3062 {0x1b8,0x1bc,4,1},
3063 {0x1c4,0x1c4,-1,2},
3064 {0x1c5,0x1c5,-1,1},
3065 {0x1c7,0x1c7,-1,2},
3066 {0x1c8,0x1c8,-1,1},
3067 {0x1ca,0x1ca,-1,2},
3068 {0x1cb,0x1db,2,1},
3069 {0x1de,0x1ee,2,1},
3070 {0x1f1,0x1f1,-1,2},
3071 {0x1f2,0x1f4,2,1},
3072 {0x1f6,0x1f6,-1,-97},
3073 {0x1f7,0x1f7,-1,-56},
3074 {0x1f8,0x21e,2,1},
3075 {0x220,0x220,-1,-130},
3076 {0x222,0x232,2,1},
3077 {0x23a,0x23a,-1,10795},
3078 {0x23b,0x23b,-1,1},
3079 {0x23d,0x23d,-1,-163},
3080 {0x23e,0x23e,-1,10792},
3081 {0x241,0x241,-1,1},
3082 {0x243,0x243,-1,-195},
3083 {0x244,0x244,-1,69},
3084 {0x245,0x245,-1,71},
3085 {0x246,0x24e,2,1},
3086 {0x370,0x372,2,1},
3087 {0x376,0x376,-1,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003088 {0x37f,0x37f,-1,116},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003089 {0x386,0x386,-1,38},
3090 {0x388,0x38a,1,37},
3091 {0x38c,0x38c,-1,64},
3092 {0x38e,0x38f,1,63},
3093 {0x391,0x3a1,1,32},
3094 {0x3a3,0x3ab,1,32},
3095 {0x3cf,0x3cf,-1,8},
3096 {0x3d8,0x3ee,2,1},
3097 {0x3f4,0x3f4,-1,-60},
3098 {0x3f7,0x3f7,-1,1},
3099 {0x3f9,0x3f9,-1,-7},
3100 {0x3fa,0x3fa,-1,1},
3101 {0x3fd,0x3ff,1,-130},
3102 {0x400,0x40f,1,80},
3103 {0x410,0x42f,1,32},
3104 {0x460,0x480,2,1},
3105 {0x48a,0x4be,2,1},
3106 {0x4c0,0x4c0,-1,15},
3107 {0x4c1,0x4cd,2,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003108 {0x4d0,0x52e,2,1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003109 {0x531,0x556,1,48},
3110 {0x10a0,0x10c5,1,7264},
Bram Moolenaarea676722015-01-14 17:40:09 +01003111 {0x10c7,0x10cd,6,7264},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003112 {0x13a0,0x13ef,1,38864},
3113 {0x13f0,0x13f5,1,8},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003114 {0x1e00,0x1e94,2,1},
3115 {0x1e9e,0x1e9e,-1,-7615},
3116 {0x1ea0,0x1efe,2,1},
3117 {0x1f08,0x1f0f,1,-8},
3118 {0x1f18,0x1f1d,1,-8},
3119 {0x1f28,0x1f2f,1,-8},
3120 {0x1f38,0x1f3f,1,-8},
3121 {0x1f48,0x1f4d,1,-8},
3122 {0x1f59,0x1f5f,2,-8},
3123 {0x1f68,0x1f6f,1,-8},
3124 {0x1f88,0x1f8f,1,-8},
3125 {0x1f98,0x1f9f,1,-8},
3126 {0x1fa8,0x1faf,1,-8},
3127 {0x1fb8,0x1fb9,1,-8},
3128 {0x1fba,0x1fbb,1,-74},
3129 {0x1fbc,0x1fbc,-1,-9},
3130 {0x1fc8,0x1fcb,1,-86},
3131 {0x1fcc,0x1fcc,-1,-9},
3132 {0x1fd8,0x1fd9,1,-8},
3133 {0x1fda,0x1fdb,1,-100},
3134 {0x1fe8,0x1fe9,1,-8},
3135 {0x1fea,0x1feb,1,-112},
3136 {0x1fec,0x1fec,-1,-7},
3137 {0x1ff8,0x1ff9,1,-128},
3138 {0x1ffa,0x1ffb,1,-126},
3139 {0x1ffc,0x1ffc,-1,-9},
3140 {0x2126,0x2126,-1,-7517},
3141 {0x212a,0x212a,-1,-8383},
3142 {0x212b,0x212b,-1,-8262},
3143 {0x2132,0x2132,-1,28},
3144 {0x2160,0x216f,1,16},
3145 {0x2183,0x2183,-1,1},
3146 {0x24b6,0x24cf,1,26},
3147 {0x2c00,0x2c2e,1,48},
3148 {0x2c60,0x2c60,-1,1},
3149 {0x2c62,0x2c62,-1,-10743},
3150 {0x2c63,0x2c63,-1,-3814},
3151 {0x2c64,0x2c64,-1,-10727},
3152 {0x2c67,0x2c6b,2,1},
3153 {0x2c6d,0x2c6d,-1,-10780},
3154 {0x2c6e,0x2c6e,-1,-10749},
3155 {0x2c6f,0x2c6f,-1,-10783},
3156 {0x2c70,0x2c70,-1,-10782},
3157 {0x2c72,0x2c75,3,1},
3158 {0x2c7e,0x2c7f,1,-10815},
3159 {0x2c80,0x2ce2,2,1},
3160 {0x2ceb,0x2ced,2,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003161 {0x2cf2,0xa640,31054,1},
3162 {0xa642,0xa66c,2,1},
3163 {0xa680,0xa69a,2,1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003164 {0xa722,0xa72e,2,1},
3165 {0xa732,0xa76e,2,1},
3166 {0xa779,0xa77b,2,1},
3167 {0xa77d,0xa77d,-1,-35332},
3168 {0xa77e,0xa786,2,1},
3169 {0xa78b,0xa78b,-1,1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003170 {0xa78d,0xa78d,-1,-42280},
3171 {0xa790,0xa792,2,1},
3172 {0xa796,0xa7a8,2,1},
3173 {0xa7aa,0xa7aa,-1,-42308},
3174 {0xa7ab,0xa7ab,-1,-42319},
3175 {0xa7ac,0xa7ac,-1,-42315},
3176 {0xa7ad,0xa7ad,-1,-42305},
3177 {0xa7b0,0xa7b0,-1,-42258},
3178 {0xa7b1,0xa7b1,-1,-42282},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003179 {0xa7b2,0xa7b2,-1,-42261},
3180 {0xa7b3,0xa7b3,-1,928},
3181 {0xa7b4,0xa7b6,2,1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003182 {0xff21,0xff3a,1,32},
Bram Moolenaarea676722015-01-14 17:40:09 +01003183 {0x10400,0x10427,1,40},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003184 {0x10c80,0x10cb2,1,64},
Bram Moolenaarea676722015-01-14 17:40:09 +01003185 {0x118a0,0x118bf,1,32}
Bram Moolenaar071d4272004-06-13 20:20:40 +00003186};
3187
Bram Moolenaard6f676d2005-06-01 21:51:55 +00003188static convertStruct toUpper[] =
Bram Moolenaar071d4272004-06-13 20:20:40 +00003189{
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003190 {0x61,0x7a,1,-32},
3191 {0xb5,0xb5,-1,743},
Bram Moolenaarea676722015-01-14 17:40:09 +01003192 {0xe0,0xf6,1,-32},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003193 {0xf8,0xfe,1,-32},
3194 {0xff,0xff,-1,121},
3195 {0x101,0x12f,2,-1},
3196 {0x131,0x131,-1,-232},
3197 {0x133,0x137,2,-1},
3198 {0x13a,0x148,2,-1},
3199 {0x14b,0x177,2,-1},
3200 {0x17a,0x17e,2,-1},
3201 {0x17f,0x17f,-1,-300},
3202 {0x180,0x180,-1,195},
3203 {0x183,0x185,2,-1},
3204 {0x188,0x18c,4,-1},
3205 {0x192,0x192,-1,-1},
3206 {0x195,0x195,-1,97},
3207 {0x199,0x199,-1,-1},
3208 {0x19a,0x19a,-1,163},
3209 {0x19e,0x19e,-1,130},
3210 {0x1a1,0x1a5,2,-1},
3211 {0x1a8,0x1ad,5,-1},
3212 {0x1b0,0x1b4,4,-1},
3213 {0x1b6,0x1b9,3,-1},
3214 {0x1bd,0x1bd,-1,-1},
3215 {0x1bf,0x1bf,-1,56},
3216 {0x1c5,0x1c5,-1,-1},
3217 {0x1c6,0x1c6,-1,-2},
3218 {0x1c8,0x1c8,-1,-1},
3219 {0x1c9,0x1c9,-1,-2},
3220 {0x1cb,0x1cb,-1,-1},
3221 {0x1cc,0x1cc,-1,-2},
3222 {0x1ce,0x1dc,2,-1},
3223 {0x1dd,0x1dd,-1,-79},
3224 {0x1df,0x1ef,2,-1},
3225 {0x1f2,0x1f2,-1,-1},
3226 {0x1f3,0x1f3,-1,-2},
3227 {0x1f5,0x1f9,4,-1},
3228 {0x1fb,0x21f,2,-1},
3229 {0x223,0x233,2,-1},
3230 {0x23c,0x23c,-1,-1},
3231 {0x23f,0x240,1,10815},
3232 {0x242,0x247,5,-1},
3233 {0x249,0x24f,2,-1},
3234 {0x250,0x250,-1,10783},
3235 {0x251,0x251,-1,10780},
3236 {0x252,0x252,-1,10782},
3237 {0x253,0x253,-1,-210},
3238 {0x254,0x254,-1,-206},
3239 {0x256,0x257,1,-205},
3240 {0x259,0x259,-1,-202},
3241 {0x25b,0x25b,-1,-203},
Bram Moolenaarea676722015-01-14 17:40:09 +01003242 {0x25c,0x25c,-1,42319},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003243 {0x260,0x260,-1,-205},
Bram Moolenaarea676722015-01-14 17:40:09 +01003244 {0x261,0x261,-1,42315},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003245 {0x263,0x263,-1,-207},
Bram Moolenaarea676722015-01-14 17:40:09 +01003246 {0x265,0x265,-1,42280},
3247 {0x266,0x266,-1,42308},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003248 {0x268,0x268,-1,-209},
3249 {0x269,0x269,-1,-211},
3250 {0x26b,0x26b,-1,10743},
Bram Moolenaarea676722015-01-14 17:40:09 +01003251 {0x26c,0x26c,-1,42305},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003252 {0x26f,0x26f,-1,-211},
3253 {0x271,0x271,-1,10749},
3254 {0x272,0x272,-1,-213},
3255 {0x275,0x275,-1,-214},
3256 {0x27d,0x27d,-1,10727},
3257 {0x280,0x283,3,-218},
Bram Moolenaarea676722015-01-14 17:40:09 +01003258 {0x287,0x287,-1,42282},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003259 {0x288,0x288,-1,-218},
3260 {0x289,0x289,-1,-69},
3261 {0x28a,0x28b,1,-217},
3262 {0x28c,0x28c,-1,-71},
3263 {0x292,0x292,-1,-219},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003264 {0x29d,0x29d,-1,42261},
Bram Moolenaarea676722015-01-14 17:40:09 +01003265 {0x29e,0x29e,-1,42258},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003266 {0x345,0x345,-1,84},
3267 {0x371,0x373,2,-1},
3268 {0x377,0x377,-1,-1},
3269 {0x37b,0x37d,1,130},
3270 {0x3ac,0x3ac,-1,-38},
3271 {0x3ad,0x3af,1,-37},
3272 {0x3b1,0x3c1,1,-32},
3273 {0x3c2,0x3c2,-1,-31},
3274 {0x3c3,0x3cb,1,-32},
3275 {0x3cc,0x3cc,-1,-64},
3276 {0x3cd,0x3ce,1,-63},
3277 {0x3d0,0x3d0,-1,-62},
3278 {0x3d1,0x3d1,-1,-57},
3279 {0x3d5,0x3d5,-1,-47},
3280 {0x3d6,0x3d6,-1,-54},
3281 {0x3d7,0x3d7,-1,-8},
3282 {0x3d9,0x3ef,2,-1},
3283 {0x3f0,0x3f0,-1,-86},
3284 {0x3f1,0x3f1,-1,-80},
3285 {0x3f2,0x3f2,-1,7},
Bram Moolenaarea676722015-01-14 17:40:09 +01003286 {0x3f3,0x3f3,-1,-116},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003287 {0x3f5,0x3f5,-1,-96},
3288 {0x3f8,0x3fb,3,-1},
3289 {0x430,0x44f,1,-32},
3290 {0x450,0x45f,1,-80},
3291 {0x461,0x481,2,-1},
3292 {0x48b,0x4bf,2,-1},
3293 {0x4c2,0x4ce,2,-1},
3294 {0x4cf,0x4cf,-1,-15},
Bram Moolenaarea676722015-01-14 17:40:09 +01003295 {0x4d1,0x52f,2,-1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003296 {0x561,0x586,1,-48},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003297 {0x13f8,0x13fd,1,-8},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003298 {0x1d79,0x1d79,-1,35332},
3299 {0x1d7d,0x1d7d,-1,3814},
3300 {0x1e01,0x1e95,2,-1},
3301 {0x1e9b,0x1e9b,-1,-59},
3302 {0x1ea1,0x1eff,2,-1},
3303 {0x1f00,0x1f07,1,8},
3304 {0x1f10,0x1f15,1,8},
3305 {0x1f20,0x1f27,1,8},
3306 {0x1f30,0x1f37,1,8},
3307 {0x1f40,0x1f45,1,8},
3308 {0x1f51,0x1f57,2,8},
3309 {0x1f60,0x1f67,1,8},
3310 {0x1f70,0x1f71,1,74},
3311 {0x1f72,0x1f75,1,86},
3312 {0x1f76,0x1f77,1,100},
3313 {0x1f78,0x1f79,1,128},
3314 {0x1f7a,0x1f7b,1,112},
3315 {0x1f7c,0x1f7d,1,126},
3316 {0x1f80,0x1f87,1,8},
3317 {0x1f90,0x1f97,1,8},
3318 {0x1fa0,0x1fa7,1,8},
3319 {0x1fb0,0x1fb1,1,8},
3320 {0x1fb3,0x1fb3,-1,9},
3321 {0x1fbe,0x1fbe,-1,-7205},
3322 {0x1fc3,0x1fc3,-1,9},
3323 {0x1fd0,0x1fd1,1,8},
3324 {0x1fe0,0x1fe1,1,8},
3325 {0x1fe5,0x1fe5,-1,7},
3326 {0x1ff3,0x1ff3,-1,9},
3327 {0x214e,0x214e,-1,-28},
3328 {0x2170,0x217f,1,-16},
3329 {0x2184,0x2184,-1,-1},
3330 {0x24d0,0x24e9,1,-26},
3331 {0x2c30,0x2c5e,1,-48},
3332 {0x2c61,0x2c61,-1,-1},
3333 {0x2c65,0x2c65,-1,-10795},
3334 {0x2c66,0x2c66,-1,-10792},
3335 {0x2c68,0x2c6c,2,-1},
3336 {0x2c73,0x2c76,3,-1},
3337 {0x2c81,0x2ce3,2,-1},
3338 {0x2cec,0x2cee,2,-1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003339 {0x2cf3,0x2cf3,-1,-1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003340 {0x2d00,0x2d25,1,-7264},
Bram Moolenaarea676722015-01-14 17:40:09 +01003341 {0x2d27,0x2d2d,6,-7264},
3342 {0xa641,0xa66d,2,-1},
3343 {0xa681,0xa69b,2,-1},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003344 {0xa723,0xa72f,2,-1},
3345 {0xa733,0xa76f,2,-1},
3346 {0xa77a,0xa77c,2,-1},
3347 {0xa77f,0xa787,2,-1},
Bram Moolenaarea676722015-01-14 17:40:09 +01003348 {0xa78c,0xa791,5,-1},
3349 {0xa793,0xa797,4,-1},
3350 {0xa799,0xa7a9,2,-1},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003351 {0xa7b5,0xa7b7,2,-1},
3352 {0xab53,0xab53,-1,-928},
3353 {0xab70,0xabbf,1,-38864},
Bram Moolenaar3e8cb582010-01-12 19:52:03 +01003354 {0xff41,0xff5a,1,-32},
Bram Moolenaarea676722015-01-14 17:40:09 +01003355 {0x10428,0x1044f,1,-40},
Bram Moolenaar66312ac2015-06-21 14:22:00 +02003356 {0x10cc0,0x10cf2,1,-64},
Bram Moolenaarea676722015-01-14 17:40:09 +01003357 {0x118c0,0x118df,1,-32}
Bram Moolenaar071d4272004-06-13 20:20:40 +00003358};
Bram Moolenaard63aff02016-03-21 22:15:30 +01003359
Bram Moolenaar071d4272004-06-13 20:20:40 +00003360/*
3361 * Return the upper-case equivalent of "a", which is a UCS-4 character. Use
3362 * simple case folding.
3363 */
3364 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003365utf_toupper(int a)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003366{
3367 /* If 'casemap' contains "keepascii" use ASCII style toupper(). */
3368 if (a < 128 && (cmp_flags & CMP_KEEPASCII))
3369 return TOUPPER_ASC(a);
3370
Bram Moolenaarc9b4b052006-04-30 18:54:39 +00003371#if defined(HAVE_TOWUPPER) && defined(__STDC_ISO_10646__)
3372 /* If towupper() is available and handles Unicode, use it. */
Bram Moolenaar071d4272004-06-13 20:20:40 +00003373 if (!(cmp_flags & CMP_INTERNAL))
3374 return towupper(a);
3375#endif
3376
3377 /* For characters below 128 use locale sensitive toupper(). */
3378 if (a < 128)
3379 return TOUPPER_LOC(a);
3380
3381 /* For any other characters use the above mapping table. */
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003382 return utf_convert(a, toUpper, (int)sizeof(toUpper));
Bram Moolenaar071d4272004-06-13 20:20:40 +00003383}
3384
3385 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003386utf_islower(int a)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003387{
Bram Moolenaar88178de2012-06-01 17:46:59 +02003388 /* German sharp s is lower case but has no upper case equivalent. */
3389 return (utf_toupper(a) != a) || a == 0xdf;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003390}
3391
3392/*
3393 * Return the lower-case equivalent of "a", which is a UCS-4 character. Use
3394 * simple case folding.
3395 */
3396 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003397utf_tolower(int a)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003398{
3399 /* If 'casemap' contains "keepascii" use ASCII style tolower(). */
3400 if (a < 128 && (cmp_flags & CMP_KEEPASCII))
3401 return TOLOWER_ASC(a);
3402
Bram Moolenaarc9b4b052006-04-30 18:54:39 +00003403#if defined(HAVE_TOWLOWER) && defined(__STDC_ISO_10646__)
Bram Moolenaar8fcc0f72005-04-23 20:45:11 +00003404 /* If towlower() is available and handles Unicode, use it. */
Bram Moolenaar071d4272004-06-13 20:20:40 +00003405 if (!(cmp_flags & CMP_INTERNAL))
3406 return towlower(a);
3407#endif
3408
3409 /* For characters below 128 use locale sensitive tolower(). */
3410 if (a < 128)
3411 return TOLOWER_LOC(a);
3412
3413 /* For any other characters use the above mapping table. */
Bram Moolenaarf0b6b0c2011-12-08 15:09:52 +01003414 return utf_convert(a, toLower, (int)sizeof(toLower));
Bram Moolenaar071d4272004-06-13 20:20:40 +00003415}
3416
3417 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003418utf_isupper(int a)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003419{
3420 return (utf_tolower(a) != a);
3421}
3422
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003423 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003424utf_strnicmp(
3425 char_u *s1,
3426 char_u *s2,
3427 size_t n1,
3428 size_t n2)
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003429{
3430 int c1, c2, cdiff;
3431 char_u buffer[6];
3432
3433 for (;;)
3434 {
3435 c1 = utf_safe_read_char_adv(&s1, &n1);
3436 c2 = utf_safe_read_char_adv(&s2, &n2);
3437
3438 if (c1 <= 0 || c2 <= 0)
3439 break;
3440
3441 if (c1 == c2)
3442 continue;
3443
3444 cdiff = utf_fold(c1) - utf_fold(c2);
3445 if (cdiff != 0)
3446 return cdiff;
3447 }
3448
3449 /* some string ended or has an incomplete/illegal character sequence */
3450
3451 if (c1 == 0 || c2 == 0)
3452 {
3453 /* some string ended. shorter string is smaller */
3454 if (c1 == 0 && c2 == 0)
3455 return 0;
3456 return c1 == 0 ? -1 : 1;
3457 }
3458
3459 /* Continue with bytewise comparison to produce some result that
3460 * would make comparison operations involving this function transitive.
3461 *
3462 * If only one string had an error, comparison should be made with
3463 * folded version of the other string. In this case it is enough
3464 * to fold just one character to determine the result of comparison. */
3465
3466 if (c1 != -1 && c2 == -1)
3467 {
3468 n1 = utf_char2bytes(utf_fold(c1), buffer);
3469 s1 = buffer;
3470 }
3471 else if (c2 != -1 && c1 == -1)
3472 {
3473 n2 = utf_char2bytes(utf_fold(c2), buffer);
3474 s2 = buffer;
3475 }
3476
3477 while (n1 > 0 && n2 > 0 && *s1 != NUL && *s2 != NUL)
3478 {
3479 cdiff = (int)(*s1) - (int)(*s2);
3480 if (cdiff != 0)
3481 return cdiff;
3482
3483 s1++;
3484 s2++;
3485 n1--;
3486 n2--;
3487 }
3488
3489 if (n1 > 0 && *s1 == NUL)
3490 n1 = 0;
3491 if (n2 > 0 && *s2 == NUL)
3492 n2 = 0;
3493
3494 if (n1 == 0 && n2 == 0)
3495 return 0;
3496 return n1 == 0 ? -1 : 1;
3497}
3498
Bram Moolenaar071d4272004-06-13 20:20:40 +00003499/*
3500 * Version of strnicmp() that handles multi-byte characters.
Bram Moolenaar8fae8e62013-01-17 14:39:47 +01003501 * Needed for Big5, Shift-JIS and UTF-8 encoding. Other DBCS encodings can
Bram Moolenaar071d4272004-06-13 20:20:40 +00003502 * probably use strnicmp(), because there are no ASCII characters in the
3503 * second byte.
3504 * Returns zero if s1 and s2 are equal (ignoring case), the difference between
3505 * two characters otherwise.
3506 */
3507 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003508mb_strnicmp(char_u *s1, char_u *s2, size_t nn)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003509{
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003510 int i, l;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003511 int cdiff;
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00003512 int n = (int)nn;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003513
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003514 if (enc_utf8)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003515 {
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003516 return utf_strnicmp(s1, s2, nn, nn);
3517 }
3518 else
3519 {
3520 for (i = 0; i < n; i += l)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003521 {
Bram Moolenaar35ee4522011-07-15 21:16:59 +02003522 if (s1[i] == NUL && s2[i] == NUL) /* both strings end */
3523 return 0;
3524
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003525 l = (*mb_ptr2len)(s1 + i);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003526 if (l <= 1)
3527 {
3528 /* Single byte: first check normally, then with ignore case. */
3529 if (s1[i] != s2[i])
3530 {
Bram Moolenaara245a5b2007-08-11 11:58:23 +00003531 cdiff = MB_TOLOWER(s1[i]) - MB_TOLOWER(s2[i]);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003532 if (cdiff != 0)
3533 return cdiff;
3534 }
3535 }
3536 else
3537 {
3538 /* For non-Unicode multi-byte don't ignore case. */
3539 if (l > n - i)
3540 l = n - i;
3541 cdiff = STRNCMP(s1 + i, s2 + i, l);
3542 if (cdiff != 0)
3543 return cdiff;
3544 }
3545 }
3546 }
3547 return 0;
3548}
3549
3550/*
3551 * "g8": show bytes of the UTF-8 char under the cursor. Doesn't matter what
3552 * 'encoding' has been set to.
3553 */
3554 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003555show_utf8(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003556{
3557 int len;
Bram Moolenaar051b7822005-05-19 21:00:46 +00003558 int rlen = 0;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003559 char_u *line;
3560 int clen;
3561 int i;
3562
3563 /* Get the byte length of the char under the cursor, including composing
3564 * characters. */
3565 line = ml_get_cursor();
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003566 len = utfc_ptr2len(line);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003567 if (len == 0)
3568 {
3569 MSG("NUL");
3570 return;
3571 }
3572
Bram Moolenaar071d4272004-06-13 20:20:40 +00003573 clen = 0;
3574 for (i = 0; i < len; ++i)
3575 {
3576 if (clen == 0)
3577 {
3578 /* start of (composing) character, get its length */
3579 if (i > 0)
Bram Moolenaar051b7822005-05-19 21:00:46 +00003580 {
3581 STRCPY(IObuff + rlen, "+ ");
3582 rlen += 2;
3583 }
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003584 clen = utf_ptr2len(line + i);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003585 }
Bram Moolenaarb382ad12010-05-21 15:46:35 +02003586 sprintf((char *)IObuff + rlen, "%02x ",
Bram Moolenaarcc448b32010-07-14 16:52:17 +02003587 (line[i] == NL) ? NUL : line[i]); /* NUL is stored as NL */
Bram Moolenaar071d4272004-06-13 20:20:40 +00003588 --clen;
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00003589 rlen += (int)STRLEN(IObuff + rlen);
Bram Moolenaar051b7822005-05-19 21:00:46 +00003590 if (rlen > IOSIZE - 20)
3591 break;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003592 }
3593
3594 msg(IObuff);
3595}
3596
3597/*
3598 * mb_head_off() function pointer.
3599 * Return offset from "p" to the first byte of the character it points into.
Bram Moolenaar24397332009-12-02 14:02:39 +00003600 * If "p" points to the NUL at the end of the string return 0.
Bram Moolenaar071d4272004-06-13 20:20:40 +00003601 * Returns 0 when already at the first byte of a character.
3602 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00003603 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003604latin_head_off(char_u *base UNUSED, char_u *p UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003605{
3606 return 0;
3607}
3608
3609 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003610dbcs_head_off(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003611{
3612 char_u *q;
3613
3614 /* It can't be a trailing byte when not using DBCS, at the start of the
3615 * string or the previous byte can't start a double-byte. */
Bram Moolenaar24397332009-12-02 14:02:39 +00003616 if (p <= base || MB_BYTE2LEN(p[-1]) == 1 || *p == NUL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003617 return 0;
3618
3619 /* This is slow: need to start at the base and go forward until the
3620 * byte we are looking for. Return 1 when we went past it, 0 otherwise. */
3621 q = base;
3622 while (q < p)
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003623 q += dbcs_ptr2len(q);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003624 return (q == p) ? 0 : 1;
3625}
3626
Bram Moolenaar071d4272004-06-13 20:20:40 +00003627/*
3628 * Special version of dbcs_head_off() that works for ScreenLines[], where
3629 * single-width DBCS_JPNU characters are stored separately.
3630 */
3631 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003632dbcs_screen_head_off(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003633{
3634 char_u *q;
3635
3636 /* It can't be a trailing byte when not using DBCS, at the start of the
3637 * string or the previous byte can't start a double-byte.
3638 * For euc-jp an 0x8e byte in the previous cell always means we have a
3639 * lead byte in the current cell. */
3640 if (p <= base
3641 || (enc_dbcs == DBCS_JPNU && p[-1] == 0x8e)
Bram Moolenaar24397332009-12-02 14:02:39 +00003642 || MB_BYTE2LEN(p[-1]) == 1
3643 || *p == NUL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003644 return 0;
3645
3646 /* This is slow: need to start at the base and go forward until the
3647 * byte we are looking for. Return 1 when we went past it, 0 otherwise.
3648 * For DBCS_JPNU look out for 0x8e, which means the second byte is not
3649 * stored as the next byte. */
3650 q = base;
3651 while (q < p)
3652 {
3653 if (enc_dbcs == DBCS_JPNU && *q == 0x8e)
3654 ++q;
3655 else
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003656 q += dbcs_ptr2len(q);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003657 }
3658 return (q == p) ? 0 : 1;
3659}
Bram Moolenaar071d4272004-06-13 20:20:40 +00003660
3661 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003662utf_head_off(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003663{
3664 char_u *q;
3665 char_u *s;
3666 int c;
Bram Moolenaar24397332009-12-02 14:02:39 +00003667 int len;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003668#ifdef FEAT_ARABIC
3669 char_u *j;
3670#endif
3671
3672 if (*p < 0x80) /* be quick for ASCII */
3673 return 0;
3674
3675 /* Skip backwards over trailing bytes: 10xx.xxxx
3676 * Skip backwards again if on a composing char. */
3677 for (q = p; ; --q)
3678 {
3679 /* Move s to the last byte of this char. */
3680 for (s = q; (s[1] & 0xc0) == 0x80; ++s)
3681 ;
3682 /* Move q to the first byte of this char. */
3683 while (q > base && (*q & 0xc0) == 0x80)
3684 --q;
3685 /* Check for illegal sequence. Do allow an illegal byte after where we
3686 * started. */
Bram Moolenaar24397332009-12-02 14:02:39 +00003687 len = utf8len_tab[*q];
3688 if (len != (int)(s - q + 1) && len != (int)(p - q + 1))
Bram Moolenaar071d4272004-06-13 20:20:40 +00003689 return 0;
3690
3691 if (q <= base)
3692 break;
3693
3694 c = utf_ptr2char(q);
3695 if (utf_iscomposing(c))
3696 continue;
3697
3698#ifdef FEAT_ARABIC
3699 if (arabic_maycombine(c))
3700 {
3701 /* Advance to get a sneak-peak at the next char */
3702 j = q;
3703 --j;
3704 /* Move j to the first byte of this char. */
3705 while (j > base && (*j & 0xc0) == 0x80)
3706 --j;
3707 if (arabic_combine(utf_ptr2char(j), c))
3708 continue;
3709 }
3710#endif
3711 break;
3712 }
3713
3714 return (int)(p - q);
3715}
3716
3717/*
Bram Moolenaard8b02732005-01-14 21:48:43 +00003718 * Copy a character from "*fp" to "*tp" and advance the pointers.
3719 */
3720 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003721mb_copy_char(char_u **fp, char_u **tp)
Bram Moolenaard8b02732005-01-14 21:48:43 +00003722{
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003723 int l = (*mb_ptr2len)(*fp);
Bram Moolenaard8b02732005-01-14 21:48:43 +00003724
3725 mch_memmove(*tp, *fp, (size_t)l);
3726 *tp += l;
3727 *fp += l;
3728}
3729
3730/*
Bram Moolenaar071d4272004-06-13 20:20:40 +00003731 * Return the offset from "p" to the first byte of a character. When "p" is
3732 * at the start of a character 0 is returned, otherwise the offset to the next
3733 * character. Can start anywhere in a stream of bytes.
3734 */
3735 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003736mb_off_next(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003737{
3738 int i;
3739 int j;
3740
3741 if (enc_utf8)
3742 {
3743 if (*p < 0x80) /* be quick for ASCII */
3744 return 0;
3745
3746 /* Find the next character that isn't 10xx.xxxx */
3747 for (i = 0; (p[i] & 0xc0) == 0x80; ++i)
3748 ;
3749 if (i > 0)
3750 {
3751 /* Check for illegal sequence. */
3752 for (j = 0; p - j > base; ++j)
3753 if ((p[-j] & 0xc0) != 0x80)
3754 break;
3755 if (utf8len_tab[p[-j]] != i + j)
3756 return 0;
3757 }
3758 return i;
3759 }
3760
3761 /* Only need to check if we're on a trail byte, it doesn't matter if we
3762 * want the offset to the next or current character. */
3763 return (*mb_head_off)(base, p);
3764}
3765
3766/*
3767 * Return the offset from "p" to the last byte of the character it points
3768 * into. Can start anywhere in a stream of bytes.
3769 */
3770 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003771mb_tail_off(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003772{
3773 int i;
3774 int j;
3775
3776 if (*p == NUL)
3777 return 0;
3778
3779 if (enc_utf8)
3780 {
3781 /* Find the last character that is 10xx.xxxx */
3782 for (i = 0; (p[i + 1] & 0xc0) == 0x80; ++i)
3783 ;
3784 /* Check for illegal sequence. */
3785 for (j = 0; p - j > base; ++j)
3786 if ((p[-j] & 0xc0) != 0x80)
3787 break;
3788 if (utf8len_tab[p[-j]] != i + j + 1)
3789 return 0;
3790 return i;
3791 }
3792
3793 /* It can't be the first byte if a double-byte when not using DBCS, at the
3794 * end of the string or the byte can't start a double-byte. */
3795 if (enc_dbcs == 0 || p[1] == NUL || MB_BYTE2LEN(*p) == 1)
3796 return 0;
3797
3798 /* Return 1 when on the lead byte, 0 when on the tail byte. */
3799 return 1 - dbcs_head_off(base, p);
3800}
3801
Bram Moolenaar68f1a482006-03-17 23:12:21 +00003802/*
3803 * Find the next illegal byte sequence.
3804 */
3805 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003806utf_find_illegal(void)
Bram Moolenaar68f1a482006-03-17 23:12:21 +00003807{
3808 pos_T pos = curwin->w_cursor;
3809 char_u *p;
3810 int len;
3811 vimconv_T vimconv;
3812 char_u *tofree = NULL;
3813
3814 vimconv.vc_type = CONV_NONE;
3815 if (enc_utf8 && (enc_canon_props(curbuf->b_p_fenc) & ENC_8BIT))
3816 {
3817 /* 'encoding' is "utf-8" but we are editing a 8-bit encoded file,
3818 * possibly a utf-8 file with illegal bytes. Setup for conversion
3819 * from utf-8 to 'fileencoding'. */
3820 convert_setup(&vimconv, p_enc, curbuf->b_p_fenc);
3821 }
3822
3823#ifdef FEAT_VIRTUALEDIT
3824 curwin->w_cursor.coladd = 0;
3825#endif
3826 for (;;)
3827 {
3828 p = ml_get_cursor();
3829 if (vimconv.vc_type != CONV_NONE)
3830 {
3831 vim_free(tofree);
3832 tofree = string_convert(&vimconv, p, NULL);
3833 if (tofree == NULL)
3834 break;
3835 p = tofree;
3836 }
3837
3838 while (*p != NUL)
3839 {
3840 /* Illegal means that there are not enough trail bytes (checked by
3841 * utf_ptr2len()) or too many of them (overlong sequence). */
3842 len = utf_ptr2len(p);
3843 if (*p >= 0x80 && (len == 1
3844 || utf_char2len(utf_ptr2char(p)) != len))
3845 {
3846 if (vimconv.vc_type == CONV_NONE)
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00003847 curwin->w_cursor.col += (colnr_T)(p - ml_get_cursor());
Bram Moolenaar68f1a482006-03-17 23:12:21 +00003848 else
3849 {
3850 int l;
3851
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00003852 len = (int)(p - tofree);
Bram Moolenaar68f1a482006-03-17 23:12:21 +00003853 for (p = ml_get_cursor(); *p != NUL && len-- > 0; p += l)
3854 {
3855 l = utf_ptr2len(p);
3856 curwin->w_cursor.col += l;
3857 }
3858 }
3859 goto theend;
3860 }
3861 p += len;
3862 }
3863 if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
3864 break;
3865 ++curwin->w_cursor.lnum;
3866 curwin->w_cursor.col = 0;
3867 }
3868
3869 /* didn't find it: don't move and beep */
3870 curwin->w_cursor = pos;
3871 beep_flush();
3872
3873theend:
3874 vim_free(tofree);
3875 convert_setup(&vimconv, NULL, NULL);
3876}
3877
Bram Moolenaar0eda7ac2010-06-26 05:38:18 +02003878#if defined(FEAT_GUI_GTK) || defined(PROTO)
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00003879/*
3880 * Return TRUE if string "s" is a valid utf-8 string.
3881 * When "end" is NULL stop at the first NUL.
3882 * When "end" is positive stop there.
3883 */
3884 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003885utf_valid_string(char_u *s, char_u *end)
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00003886{
3887 int l;
3888 char_u *p = s;
3889
3890 while (end == NULL ? *p != NUL : p < end)
3891 {
Bram Moolenaar24397332009-12-02 14:02:39 +00003892 l = utf8len_tab_zero[*p];
3893 if (l == 0)
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00003894 return FALSE; /* invalid lead byte */
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00003895 if (end != NULL && p + l > end)
3896 return FALSE; /* incomplete byte sequence */
3897 ++p;
3898 while (--l > 0)
3899 if ((*p++ & 0xc0) != 0x80)
3900 return FALSE; /* invalid trail byte */
3901 }
3902 return TRUE;
3903}
3904#endif
3905
Bram Moolenaar071d4272004-06-13 20:20:40 +00003906#if defined(FEAT_GUI) || defined(PROTO)
3907/*
3908 * Special version of mb_tail_off() for use in ScreenLines[].
3909 */
3910 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003911dbcs_screen_tail_off(char_u *base, char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003912{
3913 /* It can't be the first byte if a double-byte when not using DBCS, at the
3914 * end of the string or the byte can't start a double-byte.
3915 * For euc-jp an 0x8e byte always means we have a lead byte in the current
3916 * cell. */
3917 if (*p == NUL || p[1] == NUL
3918 || (enc_dbcs == DBCS_JPNU && *p == 0x8e)
3919 || MB_BYTE2LEN(*p) == 1)
3920 return 0;
3921
3922 /* Return 1 when on the lead byte, 0 when on the tail byte. */
3923 return 1 - dbcs_screen_head_off(base, p);
3924}
3925#endif
3926
3927/*
3928 * If the cursor moves on an trail byte, set the cursor on the lead byte.
3929 * Thus it moves left if necessary.
3930 * Return TRUE when the cursor was adjusted.
3931 */
3932 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003933mb_adjust_cursor(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003934{
Bram Moolenaar03a807a2011-07-07 15:08:58 +02003935 mb_adjustpos(curbuf, &curwin->w_cursor);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003936}
3937
3938/*
3939 * Adjust position "*lp" to point to the first byte of a multi-byte character.
3940 * If it points to a tail byte it's moved backwards to the head byte.
3941 */
3942 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003943mb_adjustpos(buf_T *buf, pos_T *lp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003944{
3945 char_u *p;
3946
3947 if (lp->col > 0
3948#ifdef FEAT_VIRTUALEDIT
3949 || lp->coladd > 1
3950#endif
3951 )
3952 {
Bram Moolenaar03a807a2011-07-07 15:08:58 +02003953 p = ml_get_buf(buf, lp->lnum, FALSE);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003954 lp->col -= (*mb_head_off)(p, p + lp->col);
3955#ifdef FEAT_VIRTUALEDIT
3956 /* Reset "coladd" when the cursor would be on the right half of a
3957 * double-wide character. */
3958 if (lp->coladd == 1
3959 && p[lp->col] != TAB
3960 && vim_isprintc((*mb_ptr2char)(p + lp->col))
3961 && ptr2cells(p + lp->col) > 1)
3962 lp->coladd = 0;
3963#endif
3964 }
3965}
3966
3967/*
3968 * Return a pointer to the character before "*p", if there is one.
3969 */
3970 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003971mb_prevptr(
3972 char_u *line, /* start of the string */
3973 char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003974{
3975 if (p > line)
Bram Moolenaar1cd871b2004-12-19 22:46:22 +00003976 mb_ptr_back(line, p);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003977 return p;
3978}
3979
3980/*
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00003981 * Return the character length of "str". Each multi-byte character (with
3982 * following composing characters) counts as one.
Bram Moolenaar071d4272004-06-13 20:20:40 +00003983 */
3984 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01003985mb_charlen(char_u *str)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003986{
Bram Moolenaarac6e65f2005-08-29 22:25:38 +00003987 char_u *p = str;
3988 int count;
Bram Moolenaar071d4272004-06-13 20:20:40 +00003989
Bram Moolenaarac6e65f2005-08-29 22:25:38 +00003990 if (p == NULL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00003991 return 0;
3992
Bram Moolenaarac6e65f2005-08-29 22:25:38 +00003993 for (count = 0; *p != NUL; count++)
3994 p += (*mb_ptr2len)(p);
Bram Moolenaar071d4272004-06-13 20:20:40 +00003995
3996 return count;
3997}
3998
Bram Moolenaar2b48ad52006-03-12 21:56:11 +00003999#if defined(FEAT_SPELL) || defined(PROTO)
Bram Moolenaarac6e65f2005-08-29 22:25:38 +00004000/*
4001 * Like mb_charlen() but for a string with specified length.
4002 */
4003 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004004mb_charlen_len(char_u *str, int len)
Bram Moolenaarac6e65f2005-08-29 22:25:38 +00004005{
4006 char_u *p = str;
4007 int count;
4008
4009 for (count = 0; *p != NUL && p < str + len; count++)
4010 p += (*mb_ptr2len)(p);
4011
4012 return count;
4013}
4014#endif
4015
Bram Moolenaar071d4272004-06-13 20:20:40 +00004016/*
4017 * Try to un-escape a multi-byte character.
4018 * Used for the "to" and "from" part of a mapping.
4019 * Return the un-escaped string if it is a multi-byte character, and advance
4020 * "pp" to just after the bytes that formed it.
4021 * Return NULL if no multi-byte char was found.
4022 */
4023 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004024mb_unescape(char_u **pp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004025{
Bram Moolenaar4fabd7d2012-09-18 18:03:37 +02004026 static char_u buf[6];
4027 int n;
4028 int m = 0;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004029 char_u *str = *pp;
4030
4031 /* Must translate K_SPECIAL KS_SPECIAL KE_FILLER to K_SPECIAL and CSI
Bram Moolenaar4fabd7d2012-09-18 18:03:37 +02004032 * KS_EXTRA KE_CSI to CSI.
4033 * Maximum length of a utf-8 character is 4 bytes. */
4034 for (n = 0; str[n] != NUL && m < 4; ++n)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004035 {
4036 if (str[n] == K_SPECIAL
4037 && str[n + 1] == KS_SPECIAL
4038 && str[n + 2] == KE_FILLER)
4039 {
4040 buf[m++] = K_SPECIAL;
4041 n += 2;
4042 }
Bram Moolenaar6203ff92008-01-06 16:18:56 +00004043 else if ((str[n] == K_SPECIAL
Bram Moolenaar071d4272004-06-13 20:20:40 +00004044# ifdef FEAT_GUI
Bram Moolenaar6203ff92008-01-06 16:18:56 +00004045 || str[n] == CSI
4046# endif
4047 )
Bram Moolenaar071d4272004-06-13 20:20:40 +00004048 && str[n + 1] == KS_EXTRA
4049 && str[n + 2] == (int)KE_CSI)
4050 {
4051 buf[m++] = CSI;
4052 n += 2;
4053 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00004054 else if (str[n] == K_SPECIAL
4055# ifdef FEAT_GUI
4056 || str[n] == CSI
4057# endif
4058 )
4059 break; /* a special key can't be a multibyte char */
4060 else
4061 buf[m++] = str[n];
4062 buf[m] = NUL;
4063
4064 /* Return a multi-byte character if it's found. An illegal sequence
4065 * will result in a 1 here. */
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00004066 if ((*mb_ptr2len)(buf) > 1)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004067 {
4068 *pp = str + n + 1;
4069 return buf;
4070 }
Bram Moolenaar4fabd7d2012-09-18 18:03:37 +02004071
4072 /* Bail out quickly for ASCII. */
4073 if (buf[0] < 128)
4074 break;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004075 }
4076 return NULL;
4077}
4078
4079/*
4080 * Return TRUE if the character at "row"/"col" on the screen is the left side
4081 * of a double-width character.
4082 * Caller must make sure "row" and "col" are not invalid!
4083 */
4084 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004085mb_lefthalve(int row, int col)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004086{
4087#ifdef FEAT_HANGULIN
4088 if (composing_hangul)
4089 return TRUE;
4090#endif
Bram Moolenaar367329b2007-08-30 11:53:22 +00004091 return (*mb_off2cells)(LineOffset[row] + col,
4092 LineOffset[row] + screen_Columns) > 1;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004093}
4094
Bram Moolenaar071d4272004-06-13 20:20:40 +00004095/*
Bram Moolenaare37d50a2008-08-06 17:06:04 +00004096 * Correct a position on the screen, if it's the right half of a double-wide
4097 * char move it to the left half. Returns the corrected column.
Bram Moolenaar071d4272004-06-13 20:20:40 +00004098 */
4099 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004100mb_fix_col(int col, int row)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004101{
4102 col = check_col(col);
4103 row = check_row(row);
4104 if (has_mbyte && ScreenLines != NULL && col > 0
4105 && ((enc_dbcs
4106 && ScreenLines[LineOffset[row] + col] != NUL
4107 && dbcs_screen_head_off(ScreenLines + LineOffset[row],
4108 ScreenLines + LineOffset[row] + col))
4109 || (enc_utf8 && ScreenLines[LineOffset[row] + col] == 0)))
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004110 return col - 1;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004111 return col;
4112}
Bram Moolenaar071d4272004-06-13 20:20:40 +00004113#endif
4114
4115#if defined(FEAT_MBYTE) || defined(FEAT_POSTSCRIPT) || defined(PROTO)
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +01004116static int enc_alias_search(char_u *name);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004117
4118/*
4119 * Skip the Vim specific head of a 'encoding' name.
4120 */
4121 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004122enc_skip(char_u *p)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004123{
4124 if (STRNCMP(p, "2byte-", 6) == 0)
4125 return p + 6;
4126 if (STRNCMP(p, "8bit-", 5) == 0)
4127 return p + 5;
4128 return p;
4129}
4130
4131/*
4132 * Find the canonical name for encoding "enc".
4133 * When the name isn't recognized, returns "enc" itself, but with all lower
4134 * case characters and '_' replaced with '-'.
4135 * Returns an allocated string. NULL for out-of-memory.
4136 */
4137 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004138enc_canonize(char_u *enc)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004139{
4140 char_u *r;
4141 char_u *p, *s;
4142 int i;
4143
Bram Moolenaar1cd871b2004-12-19 22:46:22 +00004144# ifdef FEAT_MBYTE
4145 if (STRCMP(enc, "default") == 0)
4146 {
4147 /* Use the default encoding as it's found by set_init_1(). */
4148 r = get_encoding_default();
4149 if (r == NULL)
4150 r = (char_u *)"latin1";
4151 return vim_strsave(r);
4152 }
4153# endif
4154
Bram Moolenaar29466f22007-05-10 17:45:37 +00004155 /* copy "enc" to allocated memory, with room for two '-' */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004156 r = alloc((unsigned)(STRLEN(enc) + 3));
4157 if (r != NULL)
4158 {
4159 /* Make it all lower case and replace '_' with '-'. */
4160 p = r;
4161 for (s = enc; *s != NUL; ++s)
4162 {
4163 if (*s == '_')
4164 *p++ = '-';
4165 else
4166 *p++ = TOLOWER_ASC(*s);
4167 }
4168 *p = NUL;
4169
4170 /* Skip "2byte-" and "8bit-". */
4171 p = enc_skip(r);
4172
Bram Moolenaarae5bce12005-08-15 21:41:48 +00004173 /* Change "microsoft-cp" to "cp". Used in some spell files. */
4174 if (STRNCMP(p, "microsoft-cp", 12) == 0)
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004175 STRMOVE(p, p + 10);
Bram Moolenaarae5bce12005-08-15 21:41:48 +00004176
Bram Moolenaar071d4272004-06-13 20:20:40 +00004177 /* "iso8859" -> "iso-8859" */
4178 if (STRNCMP(p, "iso8859", 7) == 0)
4179 {
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004180 STRMOVE(p + 4, p + 3);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004181 p[3] = '-';
4182 }
4183
4184 /* "iso-8859n" -> "iso-8859-n" */
4185 if (STRNCMP(p, "iso-8859", 8) == 0 && p[8] != '-')
4186 {
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004187 STRMOVE(p + 9, p + 8);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004188 p[8] = '-';
4189 }
4190
4191 /* "latin-N" -> "latinN" */
4192 if (STRNCMP(p, "latin-", 6) == 0)
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004193 STRMOVE(p + 5, p + 6);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004194
4195 if (enc_canon_search(p) >= 0)
4196 {
4197 /* canonical name can be used unmodified */
4198 if (p != r)
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004199 STRMOVE(r, p);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004200 }
4201 else if ((i = enc_alias_search(p)) >= 0)
4202 {
4203 /* alias recognized, get canonical name */
4204 vim_free(r);
4205 r = vim_strsave((char_u *)enc_canon_table[i].name);
4206 }
4207 }
4208 return r;
4209}
4210
4211/*
4212 * Search for an encoding alias of "name".
4213 * Returns -1 when not found.
4214 */
4215 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004216enc_alias_search(char_u *name)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004217{
4218 int i;
4219
4220 for (i = 0; enc_alias_table[i].name != NULL; ++i)
4221 if (STRCMP(name, enc_alias_table[i].name) == 0)
4222 return enc_alias_table[i].canon;
4223 return -1;
4224}
4225#endif
4226
4227#if defined(FEAT_MBYTE) || defined(PROTO)
4228
4229#ifdef HAVE_LANGINFO_H
4230# include <langinfo.h>
4231#endif
4232
4233/*
4234 * Get the canonicalized encoding of the current locale.
4235 * Returns an allocated string when successful, NULL when not.
4236 */
4237 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004238enc_locale(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004239{
4240#ifndef WIN3264
4241 char *s;
4242 char *p;
4243 int i;
4244#endif
4245 char buf[50];
4246#ifdef WIN3264
4247 long acp = GetACP();
4248
4249 if (acp == 1200)
4250 STRCPY(buf, "ucs-2le");
Bram Moolenaar35fdbb52005-07-09 21:08:57 +00004251 else if (acp == 1252) /* cp1252 is used as latin1 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004252 STRCPY(buf, "latin1");
4253 else
4254 sprintf(buf, "cp%ld", acp);
4255#else
4256# ifdef HAVE_NL_LANGINFO_CODESET
4257 if ((s = nl_langinfo(CODESET)) == NULL || *s == NUL)
4258# endif
Bram Moolenaardf177f62005-02-22 08:39:57 +00004259# if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004260 if ((s = setlocale(LC_CTYPE, NULL)) == NULL || *s == NUL)
Bram Moolenaardf177f62005-02-22 08:39:57 +00004261# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00004262 if ((s = getenv("LC_ALL")) == NULL || *s == NUL)
4263 if ((s = getenv("LC_CTYPE")) == NULL || *s == NUL)
4264 s = getenv("LANG");
4265
4266 if (s == NULL || *s == NUL)
4267 return FAIL;
4268
4269 /* The most generic locale format is:
4270 * language[_territory][.codeset][@modifier][+special][,[sponsor][_revision]]
4271 * If there is a '.' remove the part before it.
4272 * if there is something after the codeset, remove it.
4273 * Make the name lowercase and replace '_' with '-'.
4274 * Exception: "ja_JP.EUC" == "euc-jp", "zh_CN.EUC" = "euc-cn",
4275 * "ko_KR.EUC" == "euc-kr"
4276 */
4277 if ((p = (char *)vim_strchr((char_u *)s, '.')) != NULL)
4278 {
4279 if (p > s + 2 && STRNICMP(p + 1, "EUC", 3) == 0
4280 && !isalnum((int)p[4]) && p[4] != '-' && p[-3] == '_')
4281 {
4282 /* copy "XY.EUC" to "euc-XY" to buf[10] */
4283 STRCPY(buf + 10, "euc-");
4284 buf[14] = p[-2];
4285 buf[15] = p[-1];
4286 buf[16] = 0;
4287 s = buf + 10;
4288 }
4289 else
4290 s = p + 1;
4291 }
Bram Moolenaar2c4278f2009-05-17 11:33:22 +00004292 for (i = 0; s[i] != NUL && i < (int)sizeof(buf) - 1; ++i)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004293 {
4294 if (s[i] == '_' || s[i] == '-')
4295 buf[i] = '-';
4296 else if (isalnum((int)s[i]))
4297 buf[i] = TOLOWER_ASC(s[i]);
4298 else
4299 break;
4300 }
4301 buf[i] = NUL;
4302#endif
4303
4304 return enc_canonize((char_u *)buf);
4305}
4306
Bram Moolenaar693e40c2013-02-26 14:56:42 +01004307#if defined(WIN3264) || defined(PROTO) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004308/*
4309 * Convert an encoding name to an MS-Windows codepage.
4310 * Returns zero if no codepage can be figured out.
4311 */
4312 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004313encname2codepage(char_u *name)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004314{
4315 int cp;
4316 char_u *p = name;
4317 int idx;
4318
4319 if (STRNCMP(p, "8bit-", 5) == 0)
4320 p += 5;
4321 else if (STRNCMP(p_enc, "2byte-", 6) == 0)
4322 p += 6;
4323
4324 if (p[0] == 'c' && p[1] == 'p')
Bram Moolenaar2c6f3dc2013-07-05 20:09:16 +02004325 cp = atoi((char *)p + 2);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004326 else if ((idx = enc_canon_search(p)) >= 0)
4327 cp = enc_canon_table[idx].codepage;
4328 else
4329 return 0;
4330 if (IsValidCodePage(cp))
4331 return cp;
4332 return 0;
4333}
4334#endif
4335
4336# if defined(USE_ICONV) || defined(PROTO)
4337
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +01004338static char_u *iconv_string(vimconv_T *vcp, char_u *str, int slen, int *unconvlenp, int *resultlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004339
4340/*
4341 * Call iconv_open() with a check if iconv() works properly (there are broken
4342 * versions).
4343 * Returns (void *)-1 if failed.
4344 * (should return iconv_t, but that causes problems with prototypes).
4345 */
4346 void *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004347my_iconv_open(char_u *to, char_u *from)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004348{
4349 iconv_t fd;
4350#define ICONV_TESTLEN 400
4351 char_u tobuf[ICONV_TESTLEN];
4352 char *p;
4353 size_t tolen;
4354 static int iconv_ok = -1;
4355
4356 if (iconv_ok == FALSE)
4357 return (void *)-1; /* detected a broken iconv() previously */
4358
4359#ifdef DYNAMIC_ICONV
4360 /* Check if the iconv.dll can be found. */
4361 if (!iconv_enabled(TRUE))
4362 return (void *)-1;
4363#endif
4364
4365 fd = iconv_open((char *)enc_skip(to), (char *)enc_skip(from));
4366
4367 if (fd != (iconv_t)-1 && iconv_ok == -1)
4368 {
4369 /*
4370 * Do a dummy iconv() call to check if it actually works. There is a
4371 * version of iconv() on Linux that is broken. We can't ignore it,
4372 * because it's wide-spread. The symptoms are that after outputting
4373 * the initial shift state the "to" pointer is NULL and conversion
4374 * stops for no apparent reason after about 8160 characters.
4375 */
4376 p = (char *)tobuf;
4377 tolen = ICONV_TESTLEN;
4378 (void)iconv(fd, NULL, NULL, &p, &tolen);
4379 if (p == NULL)
4380 {
4381 iconv_ok = FALSE;
4382 iconv_close(fd);
4383 fd = (iconv_t)-1;
4384 }
4385 else
4386 iconv_ok = TRUE;
4387 }
4388
4389 return (void *)fd;
4390}
4391
4392/*
4393 * Convert the string "str[slen]" with iconv().
4394 * If "unconvlenp" is not NULL handle the string ending in an incomplete
4395 * sequence and set "*unconvlenp" to the length of it.
4396 * Returns the converted string in allocated memory. NULL for an error.
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00004397 * If resultlenp is not NULL, sets it to the result length in bytes.
Bram Moolenaar071d4272004-06-13 20:20:40 +00004398 */
4399 static char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004400iconv_string(
4401 vimconv_T *vcp,
4402 char_u *str,
4403 int slen,
4404 int *unconvlenp,
4405 int *resultlenp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004406{
4407 const char *from;
4408 size_t fromlen;
4409 char *to;
4410 size_t tolen;
4411 size_t len = 0;
4412 size_t done = 0;
4413 char_u *result = NULL;
4414 char_u *p;
4415 int l;
4416
4417 from = (char *)str;
4418 fromlen = slen;
4419 for (;;)
4420 {
4421 if (len == 0 || ICONV_ERRNO == ICONV_E2BIG)
4422 {
4423 /* Allocate enough room for most conversions. When re-allocating
4424 * increase the buffer size. */
4425 len = len + fromlen * 2 + 40;
4426 p = alloc((unsigned)len);
4427 if (p != NULL && done > 0)
4428 mch_memmove(p, result, done);
4429 vim_free(result);
4430 result = p;
4431 if (result == NULL) /* out of memory */
4432 break;
4433 }
4434
4435 to = (char *)result + done;
4436 tolen = len - done - 2;
4437 /* Avoid a warning for systems with a wrong iconv() prototype by
4438 * casting the second argument to void *. */
4439 if (iconv(vcp->vc_fd, (void *)&from, &fromlen, &to, &tolen)
4440 != (size_t)-1)
4441 {
4442 /* Finished, append a NUL. */
4443 *to = NUL;
4444 break;
4445 }
4446
4447 /* Check both ICONV_EINVAL and EINVAL, because the dynamically loaded
4448 * iconv library may use one of them. */
4449 if (!vcp->vc_fail && unconvlenp != NULL
4450 && (ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL))
4451 {
4452 /* Handle an incomplete sequence at the end. */
4453 *to = NUL;
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00004454 *unconvlenp = (int)fromlen;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004455 break;
4456 }
4457
4458 /* Check both ICONV_EILSEQ and EILSEQ, because the dynamically loaded
4459 * iconv library may use one of them. */
4460 else if (!vcp->vc_fail
4461 && (ICONV_ERRNO == ICONV_EILSEQ || ICONV_ERRNO == EILSEQ
4462 || ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL))
4463 {
4464 /* Can't convert: insert a '?' and skip a character. This assumes
4465 * conversion from 'encoding' to something else. In other
4466 * situations we don't know what to skip anyway. */
4467 *to++ = '?';
4468 if ((*mb_ptr2cells)((char_u *)from) > 1)
4469 *to++ = '?';
Bram Moolenaar217ad922005-03-20 22:37:15 +00004470 if (enc_utf8)
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00004471 l = utfc_ptr2len_len((char_u *)from, (int)fromlen);
Bram Moolenaar217ad922005-03-20 22:37:15 +00004472 else
4473 {
Bram Moolenaar0fa313a2005-08-10 21:07:57 +00004474 l = (*mb_ptr2len)((char_u *)from);
Bram Moolenaar6bb68362005-03-22 23:03:44 +00004475 if (l > (int)fromlen)
Bram Moolenaara93fa7e2006-04-17 22:14:47 +00004476 l = (int)fromlen;
Bram Moolenaar217ad922005-03-20 22:37:15 +00004477 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00004478 from += l;
4479 fromlen -= l;
4480 }
4481 else if (ICONV_ERRNO != ICONV_E2BIG)
4482 {
4483 /* conversion failed */
4484 vim_free(result);
4485 result = NULL;
4486 break;
4487 }
4488 /* Not enough room or skipping illegal sequence. */
4489 done = to - (char *)result;
4490 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00004491
Bram Moolenaar0d35e912011-04-11 14:29:17 +02004492 if (resultlenp != NULL && result != NULL)
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00004493 *resultlenp = (int)(to - (char *)result);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004494 return result;
4495}
4496
4497# if defined(DYNAMIC_ICONV) || defined(PROTO)
4498/*
4499 * Dynamically load the "iconv.dll" on Win32.
4500 */
4501
Bram Moolenaar938ee832016-01-24 15:36:03 +01004502# ifndef DYNAMIC_ICONV /* must be generating prototypes */
4503# define HINSTANCE int
4504# endif
Bram Moolenaard6f676d2005-06-01 21:51:55 +00004505static HINSTANCE hIconvDLL = 0;
4506static HINSTANCE hMsvcrtDLL = 0;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004507
Bram Moolenaar938ee832016-01-24 15:36:03 +01004508# ifndef DYNAMIC_ICONV_DLL
4509# define DYNAMIC_ICONV_DLL "iconv.dll"
4510# define DYNAMIC_ICONV_DLL_ALT1 "libiconv.dll"
4511# define DYNAMIC_ICONV_DLL_ALT2 "libiconv2.dll"
4512# define DYNAMIC_ICONV_DLL_ALT3 "libiconv-2.dll"
4513# endif
4514# ifndef DYNAMIC_MSVCRT_DLL
4515# define DYNAMIC_MSVCRT_DLL "msvcrt.dll"
4516# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00004517
4518/*
Bram Moolenaar8fae8e62013-01-17 14:39:47 +01004519 * Get the address of 'funcname' which is imported by 'hInst' DLL.
4520 */
4521 static void *
4522get_iconv_import_func(HINSTANCE hInst, const char *funcname)
4523{
4524 PBYTE pImage = (PBYTE)hInst;
4525 PIMAGE_DOS_HEADER pDOS = (PIMAGE_DOS_HEADER)hInst;
4526 PIMAGE_NT_HEADERS pPE;
4527 PIMAGE_IMPORT_DESCRIPTOR pImpDesc;
4528 PIMAGE_THUNK_DATA pIAT; /* Import Address Table */
4529 PIMAGE_THUNK_DATA pINT; /* Import Name Table */
4530 PIMAGE_IMPORT_BY_NAME pImpName;
4531
4532 if (pDOS->e_magic != IMAGE_DOS_SIGNATURE)
4533 return NULL;
4534 pPE = (PIMAGE_NT_HEADERS)(pImage + pDOS->e_lfanew);
4535 if (pPE->Signature != IMAGE_NT_SIGNATURE)
4536 return NULL;
4537 pImpDesc = (PIMAGE_IMPORT_DESCRIPTOR)(pImage
4538 + pPE->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]
4539 .VirtualAddress);
4540 for (; pImpDesc->FirstThunk; ++pImpDesc)
4541 {
Bram Moolenaarb5f7bf62013-01-19 14:02:02 +01004542 if (!pImpDesc->OriginalFirstThunk)
4543 continue;
Bram Moolenaar8fae8e62013-01-17 14:39:47 +01004544 pIAT = (PIMAGE_THUNK_DATA)(pImage + pImpDesc->FirstThunk);
4545 pINT = (PIMAGE_THUNK_DATA)(pImage + pImpDesc->OriginalFirstThunk);
4546 for (; pIAT->u1.Function; ++pIAT, ++pINT)
4547 {
4548 if (IMAGE_SNAP_BY_ORDINAL(pINT->u1.Ordinal))
4549 continue;
Bram Moolenaar94a8adf2013-01-23 16:19:23 +01004550 pImpName = (PIMAGE_IMPORT_BY_NAME)(pImage
4551 + (UINT_PTR)(pINT->u1.AddressOfData));
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +01004552 if (strcmp((char *)pImpName->Name, funcname) == 0)
Bram Moolenaar8fae8e62013-01-17 14:39:47 +01004553 return (void *)pIAT->u1.Function;
4554 }
4555 }
4556 return NULL;
4557}
4558
4559/*
Bram Moolenaar071d4272004-06-13 20:20:40 +00004560 * Try opening the iconv.dll and return TRUE if iconv() can be used.
4561 */
4562 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004563iconv_enabled(int verbose)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004564{
4565 if (hIconvDLL != 0 && hMsvcrtDLL != 0)
4566 return TRUE;
Bram Moolenaar9d6ca1c2015-10-13 13:49:09 +02004567
Bram Moolenaar938ee832016-01-24 15:36:03 +01004568 /* The iconv DLL file goes under different names, try them all.
4569 * Do the "2" version first, it's newer. */
4570#ifdef DYNAMIC_ICONV_DLL_ALT2
Bram Moolenaar9d6ca1c2015-10-13 13:49:09 +02004571 if (hIconvDLL == 0)
4572 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT2);
Bram Moolenaar938ee832016-01-24 15:36:03 +01004573#endif
4574#ifdef DYNAMIC_ICONV_DLL_ALT3
Bram Moolenaar9d6ca1c2015-10-13 13:49:09 +02004575 if (hIconvDLL == 0)
4576 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT3);
Bram Moolenaar938ee832016-01-24 15:36:03 +01004577#endif
4578 if (hIconvDLL == 0)
4579 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL);
4580#ifdef DYNAMIC_ICONV_DLL_ALT1
4581 if (hIconvDLL == 0)
4582 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT1);
4583#endif
Bram Moolenaar9d6ca1c2015-10-13 13:49:09 +02004584
Bram Moolenaar071d4272004-06-13 20:20:40 +00004585 if (hIconvDLL != 0)
Bram Moolenaarebbcb822010-10-23 14:02:54 +02004586 hMsvcrtDLL = vimLoadLib(DYNAMIC_MSVCRT_DLL);
Bram Moolenaar071d4272004-06-13 20:20:40 +00004587 if (hIconvDLL == 0 || hMsvcrtDLL == 0)
4588 {
4589 /* Only give the message when 'verbose' is set, otherwise it might be
4590 * done whenever a conversion is attempted. */
4591 if (verbose && p_verbose > 0)
Bram Moolenaara04f10b2005-05-31 22:09:46 +00004592 {
4593 verbose_enter();
Bram Moolenaar071d4272004-06-13 20:20:40 +00004594 EMSG2(_(e_loadlib),
4595 hIconvDLL == 0 ? DYNAMIC_ICONV_DLL : DYNAMIC_MSVCRT_DLL);
Bram Moolenaara04f10b2005-05-31 22:09:46 +00004596 verbose_leave();
4597 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00004598 iconv_end();
4599 return FALSE;
4600 }
4601
Bram Moolenaard857f0e2005-06-21 22:37:39 +00004602 iconv = (void *)GetProcAddress(hIconvDLL, "libiconv");
4603 iconv_open = (void *)GetProcAddress(hIconvDLL, "libiconv_open");
4604 iconv_close = (void *)GetProcAddress(hIconvDLL, "libiconv_close");
4605 iconvctl = (void *)GetProcAddress(hIconvDLL, "libiconvctl");
Bram Moolenaar8fae8e62013-01-17 14:39:47 +01004606 iconv_errno = get_iconv_import_func(hIconvDLL, "_errno");
4607 if (iconv_errno == NULL)
4608 iconv_errno = (void *)GetProcAddress(hMsvcrtDLL, "_errno");
Bram Moolenaar071d4272004-06-13 20:20:40 +00004609 if (iconv == NULL || iconv_open == NULL || iconv_close == NULL
4610 || iconvctl == NULL || iconv_errno == NULL)
4611 {
4612 iconv_end();
4613 if (verbose && p_verbose > 0)
Bram Moolenaara04f10b2005-05-31 22:09:46 +00004614 {
4615 verbose_enter();
Bram Moolenaar071d4272004-06-13 20:20:40 +00004616 EMSG2(_(e_loadfunc), "for libiconv");
Bram Moolenaara04f10b2005-05-31 22:09:46 +00004617 verbose_leave();
4618 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00004619 return FALSE;
4620 }
4621 return TRUE;
4622}
4623
4624 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01004625iconv_end(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004626{
4627 /* Don't use iconv() when inputting or outputting characters. */
4628 if (input_conv.vc_type == CONV_ICONV)
4629 convert_setup(&input_conv, NULL, NULL);
4630 if (output_conv.vc_type == CONV_ICONV)
4631 convert_setup(&output_conv, NULL, NULL);
4632
4633 if (hIconvDLL != 0)
4634 FreeLibrary(hIconvDLL);
4635 if (hMsvcrtDLL != 0)
4636 FreeLibrary(hMsvcrtDLL);
4637 hIconvDLL = 0;
4638 hMsvcrtDLL = 0;
4639}
4640# endif /* DYNAMIC_ICONV */
4641# endif /* USE_ICONV */
4642
4643#endif /* FEAT_MBYTE */
4644
4645#if defined(FEAT_XIM) || defined(PROTO)
4646
Bram Moolenaar64404472010-06-26 06:24:45 +02004647# if defined(FEAT_GUI_GTK) || defined(PROTO)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004648static int xim_has_preediting INIT(= FALSE); /* IM current status */
4649
4650/*
4651 * Set preedit_start_col to the current cursor position.
4652 */
4653 static void
4654init_preedit_start_col(void)
4655{
4656 if (State & CMDLINE)
4657 preedit_start_col = cmdline_getvcol_cursor();
Bram Moolenaar9ec021a2015-12-12 16:23:29 +01004658 else if (curwin != NULL && curwin->w_buffer != NULL)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004659 getvcol(curwin, &curwin->w_cursor, &preedit_start_col, NULL, NULL);
4660 /* Prevent that preediting marks the buffer as changed. */
4661 xim_changed_while_preediting = curbuf->b_changed;
4662}
Bram Moolenaar071d4272004-06-13 20:20:40 +00004663
4664static int im_is_active = FALSE; /* IM is enabled for current mode */
Bram Moolenaarc236c162008-07-13 17:41:49 +00004665static int preedit_is_active = FALSE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004666static int im_preedit_cursor = 0; /* cursor offset in characters */
4667static int im_preedit_trailing = 0; /* number of characters after cursor */
4668
4669static unsigned long im_commit_handler_id = 0;
4670static unsigned int im_activatekey_keyval = GDK_VoidSymbol;
4671static unsigned int im_activatekey_state = 0;
4672
4673 void
4674im_set_active(int active)
4675{
4676 int was_active;
4677
Bram Moolenaarabab85a2013-06-26 19:18:05 +02004678 was_active = !!im_get_status();
Bram Moolenaar071d4272004-06-13 20:20:40 +00004679 im_is_active = (active && !p_imdisable);
4680
4681 if (im_is_active != was_active)
4682 xim_reset();
4683}
4684
4685 void
4686xim_set_focus(int focus)
4687{
4688 if (xic != NULL)
4689 {
4690 if (focus)
4691 gtk_im_context_focus_in(xic);
4692 else
4693 gtk_im_context_focus_out(xic);
4694 }
4695}
4696
4697 void
4698im_set_position(int row, int col)
4699{
4700 if (xic != NULL)
4701 {
4702 GdkRectangle area;
4703
4704 area.x = FILL_X(col);
4705 area.y = FILL_Y(row);
4706 area.width = gui.char_width * (mb_lefthalve(row, col) ? 2 : 1);
4707 area.height = gui.char_height;
4708
4709 gtk_im_context_set_cursor_location(xic, &area);
4710 }
4711}
4712
4713# if 0 || defined(PROTO) /* apparently only used in gui_x11.c */
4714 void
4715xim_set_preedit(void)
4716{
4717 im_set_position(gui.row, gui.col);
4718}
4719# endif
4720
4721 static void
4722im_add_to_input(char_u *str, int len)
4723{
4724 /* Convert from 'termencoding' (always "utf-8") to 'encoding' */
4725 if (input_conv.vc_type != CONV_NONE)
4726 {
4727 str = string_convert(&input_conv, str, &len);
4728 g_return_if_fail(str != NULL);
4729 }
4730
4731 add_to_input_buf_csi(str, len);
4732
4733 if (input_conv.vc_type != CONV_NONE)
4734 vim_free(str);
4735
4736 if (p_mh) /* blank out the pointer if necessary */
4737 gui_mch_mousehide(TRUE);
4738}
4739
4740 static void
4741im_delete_preedit(void)
4742{
4743 char_u bskey[] = {CSI, 'k', 'b'};
4744 char_u delkey[] = {CSI, 'k', 'D'};
4745
4746 if (State & NORMAL)
4747 {
4748 im_preedit_cursor = 0;
4749 return;
4750 }
4751 for (; im_preedit_cursor > 0; --im_preedit_cursor)
4752 add_to_input_buf(bskey, (int)sizeof(bskey));
4753
4754 for (; im_preedit_trailing > 0; --im_preedit_trailing)
4755 add_to_input_buf(delkey, (int)sizeof(delkey));
4756}
4757
Bram Moolenaar39fecab2006-08-29 14:07:36 +00004758/*
4759 * Move the cursor left by "num_move_back" characters.
4760 * Note that ins_left() checks im_is_preediting() to avoid breaking undo for
4761 * these K_LEFT keys.
4762 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004763 static void
4764im_correct_cursor(int num_move_back)
4765{
4766 char_u backkey[] = {CSI, 'k', 'l'};
4767
4768 if (State & NORMAL)
4769 return;
4770# ifdef FEAT_RIGHTLEFT
4771 if ((State & CMDLINE) == 0 && curwin != NULL && curwin->w_p_rl)
4772 backkey[2] = 'r';
4773# endif
4774 for (; num_move_back > 0; --num_move_back)
4775 add_to_input_buf(backkey, (int)sizeof(backkey));
4776}
4777
4778static int xim_expected_char = NUL;
4779static int xim_ignored_char = FALSE;
4780
4781/*
4782 * Update the mode and cursor while in an IM callback.
4783 */
4784 static void
4785im_show_info(void)
4786{
4787 int old_vgetc_busy;
Bram Moolenaar5555acc2006-04-07 21:33:12 +00004788
Bram Moolenaar071d4272004-06-13 20:20:40 +00004789 old_vgetc_busy = vgetc_busy;
4790 vgetc_busy = TRUE;
4791 showmode();
4792 vgetc_busy = old_vgetc_busy;
Bram Moolenaar917ba892012-03-07 19:38:55 +01004793 if ((State & NORMAL) || (State & INSERT))
4794 setcursor();
Bram Moolenaar071d4272004-06-13 20:20:40 +00004795 out_flush();
4796}
4797
4798/*
4799 * Callback invoked when the user finished preediting.
4800 * Put the final string into the input buffer.
4801 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004802 static void
Bram Moolenaar2c4278f2009-05-17 11:33:22 +00004803im_commit_cb(GtkIMContext *context UNUSED,
4804 const gchar *str,
4805 gpointer data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004806{
Bram Moolenaar72597a52010-07-18 15:31:08 +02004807 int slen = (int)STRLEN(str);
4808 int add_to_input = TRUE;
4809 int clen;
4810 int len = slen;
4811 int commit_with_preedit = TRUE;
4812 char_u *im_str;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004813
4814#ifdef XIM_DEBUG
4815 xim_log("im_commit_cb(): %s\n", str);
4816#endif
4817
4818 /* The imhangul module doesn't reset the preedit string before
4819 * committing. Call im_delete_preedit() to work around that. */
4820 im_delete_preedit();
4821
4822 /* Indicate that preediting has finished. */
4823 if (preedit_start_col == MAXCOL)
4824 {
4825 init_preedit_start_col();
4826 commit_with_preedit = FALSE;
4827 }
4828
4829 /* The thing which setting "preedit_start_col" to MAXCOL means that
Bram Moolenaar84a05ac2013-05-06 04:24:17 +02004830 * "preedit_start_col" will be set forcedly when calling
Bram Moolenaar071d4272004-06-13 20:20:40 +00004831 * preedit_changed_cb() next time.
4832 * "preedit_start_col" should not reset with MAXCOL on this part. Vim
4833 * is simulating the preediting by using add_to_input_str(). when
4834 * preedit begin immediately before committed, the typebuf is not
4835 * flushed to screen, then it can't get correct "preedit_start_col".
4836 * Thus, it should calculate the cells by adding cells of the committed
4837 * string. */
4838 if (input_conv.vc_type != CONV_NONE)
4839 {
4840 im_str = string_convert(&input_conv, (char_u *)str, &len);
4841 g_return_if_fail(im_str != NULL);
4842 }
4843 else
4844 im_str = (char_u *)str;
Bram Moolenaar72597a52010-07-18 15:31:08 +02004845
4846 clen = mb_string2cells(im_str, len);
4847
Bram Moolenaar071d4272004-06-13 20:20:40 +00004848 if (input_conv.vc_type != CONV_NONE)
4849 vim_free(im_str);
4850 preedit_start_col += clen;
4851
4852 /* Is this a single character that matches a keypad key that's just
4853 * been pressed? If so, we don't want it to be entered as such - let
4854 * us carry on processing the raw keycode so that it may be used in
4855 * mappings as <kSomething>. */
4856 if (xim_expected_char != NUL)
4857 {
4858 /* We're currently processing a keypad or other special key */
4859 if (slen == 1 && str[0] == xim_expected_char)
4860 {
4861 /* It's a match - don't do it here */
4862 xim_ignored_char = TRUE;
4863 add_to_input = FALSE;
4864 }
4865 else
4866 {
4867 /* Not a match */
4868 xim_ignored_char = FALSE;
4869 }
4870 }
4871
4872 if (add_to_input)
4873 im_add_to_input((char_u *)str, slen);
4874
4875 /* Inserting chars while "im_is_active" is set does not cause a change of
4876 * buffer. When the chars are committed the buffer must be marked as
4877 * changed. */
4878 if (!commit_with_preedit)
4879 preedit_start_col = MAXCOL;
4880
4881 /* This flag is used in changed() at next call. */
4882 xim_changed_while_preediting = TRUE;
4883
4884 if (gtk_main_level() > 0)
4885 gtk_main_quit();
4886}
4887
4888/*
4889 * Callback invoked after start to the preedit.
4890 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004891 static void
Bram Moolenaar2c4278f2009-05-17 11:33:22 +00004892im_preedit_start_cb(GtkIMContext *context UNUSED, gpointer data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004893{
4894#ifdef XIM_DEBUG
4895 xim_log("im_preedit_start_cb()\n");
4896#endif
4897
4898 im_is_active = TRUE;
Bram Moolenaarc236c162008-07-13 17:41:49 +00004899 preedit_is_active = TRUE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004900 gui_update_cursor(TRUE, FALSE);
Bram Moolenaarc236c162008-07-13 17:41:49 +00004901 im_show_info();
Bram Moolenaar071d4272004-06-13 20:20:40 +00004902}
4903
4904/*
4905 * Callback invoked after end to the preedit.
4906 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004907 static void
Bram Moolenaar2c4278f2009-05-17 11:33:22 +00004908im_preedit_end_cb(GtkIMContext *context UNUSED, gpointer data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004909{
4910#ifdef XIM_DEBUG
4911 xim_log("im_preedit_end_cb()\n");
4912#endif
4913 im_delete_preedit();
4914
4915 /* Indicate that preediting has finished */
4916 preedit_start_col = MAXCOL;
4917 xim_has_preediting = FALSE;
4918
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004919#if 0
4920 /* Removal of this line suggested by Takuhiro Nishioka. Fixes that IM was
Bram Moolenaarc236c162008-07-13 17:41:49 +00004921 * switched off unintentionally. We now use preedit_is_active (added by
4922 * SungHyun Nam). */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004923 im_is_active = FALSE;
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00004924#endif
Bram Moolenaarc236c162008-07-13 17:41:49 +00004925 preedit_is_active = FALSE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004926 gui_update_cursor(TRUE, FALSE);
4927 im_show_info();
4928}
4929
4930/*
4931 * Callback invoked after changes to the preedit string. If the preedit
4932 * string was empty before, remember the preedit start column so we know
4933 * where to apply feedback attributes. Delete the previous preedit string
4934 * if there was one, save the new preedit cursor offset, and put the new
4935 * string into the input buffer.
4936 *
4937 * TODO: The pragmatic "put into input buffer" approach used here has
4938 * several fundamental problems:
4939 *
4940 * - The characters in the preedit string are subject to remapping.
4941 * That's broken, only the finally committed string should be remapped.
4942 *
4943 * - There is a race condition involved: The retrieved value for the
4944 * current cursor position will be wrong if any unprocessed characters
4945 * are still queued in the input buffer.
4946 *
4947 * - Due to the lack of synchronization between the file buffer in memory
4948 * and any typed characters, it's practically impossible to implement the
4949 * "retrieve_surrounding" and "delete_surrounding" signals reliably. IM
4950 * modules for languages such as Thai are likely to rely on this feature
4951 * for proper operation.
4952 *
4953 * Conclusions: I think support for preediting needs to be moved to the
4954 * core parts of Vim. Ideally, until it has been committed, the preediting
4955 * string should only be displayed and not affect the buffer content at all.
4956 * The question how to deal with the synchronization issue still remains.
4957 * Circumventing the input buffer is probably not desirable. Anyway, I think
4958 * implementing "retrieve_surrounding" is the only hard problem.
4959 *
4960 * One way to solve all of this in a clean manner would be to queue all key
4961 * press/release events "as is" in the input buffer, and apply the IM filtering
4962 * at the receiving end of the queue. This, however, would have a rather large
4963 * impact on the code base. If there is an easy way to force processing of all
4964 * remaining input from within the "retrieve_surrounding" signal handler, this
4965 * might not be necessary. Gotta ask on vim-dev for opinions.
4966 */
Bram Moolenaar071d4272004-06-13 20:20:40 +00004967 static void
Bram Moolenaar2c4278f2009-05-17 11:33:22 +00004968im_preedit_changed_cb(GtkIMContext *context, gpointer data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00004969{
4970 char *preedit_string = NULL;
4971 int cursor_index = 0;
4972 int num_move_back = 0;
4973 char_u *str;
4974 char_u *p;
4975 int i;
4976
4977 gtk_im_context_get_preedit_string(context,
4978 &preedit_string, NULL,
4979 &cursor_index);
4980
4981#ifdef XIM_DEBUG
4982 xim_log("im_preedit_changed_cb(): %s\n", preedit_string);
4983#endif
4984
4985 g_return_if_fail(preedit_string != NULL); /* just in case */
4986
4987 /* If preedit_start_col is MAXCOL set it to the current cursor position. */
4988 if (preedit_start_col == MAXCOL && preedit_string[0] != '\0')
4989 {
4990 xim_has_preediting = TRUE;
4991
4992 /* Urgh, this breaks if the input buffer isn't empty now */
4993 init_preedit_start_col();
4994 }
4995 else if (cursor_index == 0 && preedit_string[0] == '\0')
4996 {
Bram Moolenaar39fecab2006-08-29 14:07:36 +00004997 xim_has_preediting = FALSE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00004998
4999 /* If at the start position (after typing backspace)
5000 * preedit_start_col must be reset. */
5001 preedit_start_col = MAXCOL;
5002 }
5003
5004 im_delete_preedit();
5005
5006 /*
5007 * Compute the end of the preediting area: "preedit_end_col".
5008 * According to the documentation of gtk_im_context_get_preedit_string(),
5009 * the cursor_pos output argument returns the offset in bytes. This is
5010 * unfortunately not true -- real life shows the offset is in characters,
5011 * and the GTK+ source code agrees with me. Will file a bug later.
5012 */
5013 if (preedit_start_col != MAXCOL)
5014 preedit_end_col = preedit_start_col;
5015 str = (char_u *)preedit_string;
5016 for (p = str, i = 0; *p != NUL; p += utf_byte2len(*p), ++i)
5017 {
5018 int is_composing;
5019
5020 is_composing = ((*p & 0x80) != 0 && utf_iscomposing(utf_ptr2char(p)));
5021 /*
5022 * These offsets are used as counters when generating <BS> and <Del>
5023 * to delete the preedit string. So don't count composing characters
5024 * unless 'delcombine' is enabled.
5025 */
5026 if (!is_composing || p_deco)
5027 {
5028 if (i < cursor_index)
5029 ++im_preedit_cursor;
5030 else
5031 ++im_preedit_trailing;
5032 }
5033 if (!is_composing && i >= cursor_index)
5034 {
5035 /* This is essentially the same as im_preedit_trailing, except
5036 * composing characters are not counted even if p_deco is set. */
5037 ++num_move_back;
5038 }
5039 if (preedit_start_col != MAXCOL)
5040 preedit_end_col += utf_ptr2cells(p);
5041 }
5042
5043 if (p > str)
5044 {
5045 im_add_to_input(str, (int)(p - str));
5046 im_correct_cursor(num_move_back);
5047 }
5048
5049 g_free(preedit_string);
5050
5051 if (gtk_main_level() > 0)
5052 gtk_main_quit();
5053}
5054
5055/*
5056 * Translate the Pango attributes at iter to Vim highlighting attributes.
5057 * Ignore attributes not supported by Vim highlighting. This shouldn't have
5058 * too much impact -- right now we handle even more attributes than necessary
5059 * for the IM modules I tested with.
5060 */
5061 static int
5062translate_pango_attributes(PangoAttrIterator *iter)
5063{
5064 PangoAttribute *attr;
5065 int char_attr = HL_NORMAL;
5066
5067 attr = pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE);
5068 if (attr != NULL && ((PangoAttrInt *)attr)->value
5069 != (int)PANGO_UNDERLINE_NONE)
5070 char_attr |= HL_UNDERLINE;
5071
5072 attr = pango_attr_iterator_get(iter, PANGO_ATTR_WEIGHT);
5073 if (attr != NULL && ((PangoAttrInt *)attr)->value >= (int)PANGO_WEIGHT_BOLD)
5074 char_attr |= HL_BOLD;
5075
5076 attr = pango_attr_iterator_get(iter, PANGO_ATTR_STYLE);
5077 if (attr != NULL && ((PangoAttrInt *)attr)->value
5078 != (int)PANGO_STYLE_NORMAL)
5079 char_attr |= HL_ITALIC;
5080
5081 attr = pango_attr_iterator_get(iter, PANGO_ATTR_BACKGROUND);
5082 if (attr != NULL)
5083 {
5084 const PangoColor *color = &((PangoAttrColor *)attr)->color;
5085
5086 /* Assume inverse if black background is requested */
5087 if ((color->red | color->green | color->blue) == 0)
5088 char_attr |= HL_INVERSE;
5089 }
5090
5091 return char_attr;
5092}
5093
5094/*
5095 * Retrieve the highlighting attributes at column col in the preedit string.
5096 * Return -1 if not in preediting mode or if col is out of range.
5097 */
5098 int
5099im_get_feedback_attr(int col)
5100{
5101 char *preedit_string = NULL;
5102 PangoAttrList *attr_list = NULL;
5103 int char_attr = -1;
5104
5105 if (xic == NULL)
5106 return char_attr;
5107
5108 gtk_im_context_get_preedit_string(xic, &preedit_string, &attr_list, NULL);
5109
5110 if (preedit_string != NULL && attr_list != NULL)
5111 {
Bram Moolenaar89d40322006-08-29 15:30:07 +00005112 int idx;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005113
5114 /* Get the byte index as used by PangoAttrIterator */
Bram Moolenaar89d40322006-08-29 15:30:07 +00005115 for (idx = 0; col > 0 && preedit_string[idx] != '\0'; --col)
5116 idx += utfc_ptr2len((char_u *)preedit_string + idx);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005117
Bram Moolenaar89d40322006-08-29 15:30:07 +00005118 if (preedit_string[idx] != '\0')
Bram Moolenaar071d4272004-06-13 20:20:40 +00005119 {
5120 PangoAttrIterator *iter;
5121 int start, end;
5122
5123 char_attr = HL_NORMAL;
5124 iter = pango_attr_list_get_iterator(attr_list);
5125
5126 /* Extract all relevant attributes from the list. */
5127 do
5128 {
5129 pango_attr_iterator_range(iter, &start, &end);
5130
Bram Moolenaar89d40322006-08-29 15:30:07 +00005131 if (idx >= start && idx < end)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005132 char_attr |= translate_pango_attributes(iter);
5133 }
5134 while (pango_attr_iterator_next(iter));
5135
5136 pango_attr_iterator_destroy(iter);
5137 }
5138 }
5139
5140 if (attr_list != NULL)
5141 pango_attr_list_unref(attr_list);
5142 g_free(preedit_string);
5143
5144 return char_attr;
5145}
5146
5147 void
5148xim_init(void)
5149{
5150#ifdef XIM_DEBUG
5151 xim_log("xim_init()\n");
5152#endif
5153
5154 g_return_if_fail(gui.drawarea != NULL);
Bram Moolenaar98921892016-02-23 17:14:37 +01005155#if GTK_CHECK_VERSION(3,0,0)
5156 g_return_if_fail(gtk_widget_get_window(gui.drawarea) != NULL);
5157#else
Bram Moolenaar071d4272004-06-13 20:20:40 +00005158 g_return_if_fail(gui.drawarea->window != NULL);
Bram Moolenaar98921892016-02-23 17:14:37 +01005159#endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00005160
5161 xic = gtk_im_multicontext_new();
5162 g_object_ref(xic);
5163
5164 im_commit_handler_id = g_signal_connect(G_OBJECT(xic), "commit",
5165 G_CALLBACK(&im_commit_cb), NULL);
5166 g_signal_connect(G_OBJECT(xic), "preedit_changed",
5167 G_CALLBACK(&im_preedit_changed_cb), NULL);
5168 g_signal_connect(G_OBJECT(xic), "preedit_start",
5169 G_CALLBACK(&im_preedit_start_cb), NULL);
5170 g_signal_connect(G_OBJECT(xic), "preedit_end",
5171 G_CALLBACK(&im_preedit_end_cb), NULL);
5172
Bram Moolenaar98921892016-02-23 17:14:37 +01005173#if GTK_CHECK_VERSION(3,0,0)
5174 gtk_im_context_set_client_window(xic, gtk_widget_get_window(gui.drawarea));
5175#else
Bram Moolenaar071d4272004-06-13 20:20:40 +00005176 gtk_im_context_set_client_window(xic, gui.drawarea->window);
Bram Moolenaar98921892016-02-23 17:14:37 +01005177#endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00005178}
5179
5180 void
5181im_shutdown(void)
5182{
5183#ifdef XIM_DEBUG
5184 xim_log("im_shutdown()\n");
5185#endif
5186
5187 if (xic != NULL)
5188 {
5189 gtk_im_context_focus_out(xic);
5190 g_object_unref(xic);
5191 xic = NULL;
5192 }
5193 im_is_active = FALSE;
5194 im_commit_handler_id = 0;
5195 preedit_start_col = MAXCOL;
5196 xim_has_preediting = FALSE;
5197}
5198
5199/*
5200 * Convert the string argument to keyval and state for GdkEventKey.
5201 * If str is valid return TRUE, otherwise FALSE.
5202 *
5203 * See 'imactivatekey' for documentation of the format.
5204 */
5205 static int
5206im_string_to_keyval(const char *str, unsigned int *keyval, unsigned int *state)
5207{
5208 const char *mods_end;
5209 unsigned tmp_keyval;
5210 unsigned tmp_state = 0;
5211
5212 mods_end = strrchr(str, '-');
5213 mods_end = (mods_end != NULL) ? mods_end + 1 : str;
5214
5215 /* Parse modifier keys */
5216 while (str < mods_end)
5217 switch (*str++)
5218 {
5219 case '-': break;
5220 case 'S': case 's': tmp_state |= (unsigned)GDK_SHIFT_MASK; break;
5221 case 'L': case 'l': tmp_state |= (unsigned)GDK_LOCK_MASK; break;
5222 case 'C': case 'c': tmp_state |= (unsigned)GDK_CONTROL_MASK;break;
5223 case '1': tmp_state |= (unsigned)GDK_MOD1_MASK; break;
5224 case '2': tmp_state |= (unsigned)GDK_MOD2_MASK; break;
5225 case '3': tmp_state |= (unsigned)GDK_MOD3_MASK; break;
5226 case '4': tmp_state |= (unsigned)GDK_MOD4_MASK; break;
5227 case '5': tmp_state |= (unsigned)GDK_MOD5_MASK; break;
5228 default:
5229 return FALSE;
5230 }
5231
5232 tmp_keyval = gdk_keyval_from_name(str);
5233
5234 if (tmp_keyval == 0 || tmp_keyval == GDK_VoidSymbol)
5235 return FALSE;
5236
5237 if (keyval != NULL)
5238 *keyval = tmp_keyval;
5239 if (state != NULL)
5240 *state = tmp_state;
5241
5242 return TRUE;
5243}
5244
5245/*
5246 * Return TRUE if p_imak is valid, otherwise FALSE. As a special case, an
5247 * empty string is also regarded as valid.
5248 *
5249 * Note: The numerical key value of p_imak is cached if it was valid; thus
5250 * boldly assuming im_xim_isvalid_imactivate() will always be called whenever
5251 * 'imak' changes. This is currently the case but not obvious -- should
5252 * probably rename the function for clarity.
5253 */
5254 int
5255im_xim_isvalid_imactivate(void)
5256{
5257 if (p_imak[0] == NUL)
5258 {
5259 im_activatekey_keyval = GDK_VoidSymbol;
5260 im_activatekey_state = 0;
5261 return TRUE;
5262 }
5263
5264 return im_string_to_keyval((const char *)p_imak,
5265 &im_activatekey_keyval,
5266 &im_activatekey_state);
5267}
5268
5269 static void
5270im_synthesize_keypress(unsigned int keyval, unsigned int state)
5271{
5272 GdkEventKey *event;
5273
5274# ifdef HAVE_GTK_MULTIHEAD
5275 event = (GdkEventKey *)gdk_event_new(GDK_KEY_PRESS);
Bram Moolenaar98921892016-02-23 17:14:37 +01005276# if GTK_CHECK_VERSION(3,0,0)
5277 g_object_ref(gtk_widget_get_window(gui.drawarea));
5278 /* unreffed by gdk_event_free() */
5279# else
Bram Moolenaar071d4272004-06-13 20:20:40 +00005280 g_object_ref(gui.drawarea->window); /* unreffed by gdk_event_free() */
Bram Moolenaar98921892016-02-23 17:14:37 +01005281# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00005282# else
5283 event = (GdkEventKey *)g_malloc0((gulong)sizeof(GdkEvent));
5284 event->type = GDK_KEY_PRESS;
5285# endif
Bram Moolenaar98921892016-02-23 17:14:37 +01005286# if GTK_CHECK_VERSION(3,0,0)
5287 event->window = gtk_widget_get_window(gui.drawarea);
5288# else
Bram Moolenaar071d4272004-06-13 20:20:40 +00005289 event->window = gui.drawarea->window;
Bram Moolenaar98921892016-02-23 17:14:37 +01005290# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00005291 event->send_event = TRUE;
5292 event->time = GDK_CURRENT_TIME;
5293 event->state = state;
5294 event->keyval = keyval;
5295 event->hardware_keycode = /* needed for XIM */
5296 XKeysymToKeycode(GDK_WINDOW_XDISPLAY(event->window), (KeySym)keyval);
5297 event->length = 0;
5298 event->string = NULL;
5299
5300 gtk_im_context_filter_keypress(xic, event);
5301
5302 /* For consistency, also send the corresponding release event. */
5303 event->type = GDK_KEY_RELEASE;
5304 event->send_event = FALSE;
5305 gtk_im_context_filter_keypress(xic, event);
5306
5307# ifdef HAVE_GTK_MULTIHEAD
5308 gdk_event_free((GdkEvent *)event);
5309# else
5310 g_free(event);
5311# endif
5312}
5313
5314 void
5315xim_reset(void)
5316{
5317 if (xic != NULL)
5318 {
Bram Moolenaar071d4272004-06-13 20:20:40 +00005319 gtk_im_context_reset(xic);
5320
Bram Moolenaar071d4272004-06-13 20:20:40 +00005321 if (p_imdisable)
5322 im_shutdown();
5323 else
5324 {
Bram Moolenaar071d4272004-06-13 20:20:40 +00005325 xim_set_focus(gui.in_focus);
5326
Bram Moolenaarf0327f62013-06-28 20:16:55 +02005327# ifdef FEAT_EVAL
Bram Moolenaarabab85a2013-06-26 19:18:05 +02005328 if (p_imaf[0] != NUL)
5329 {
5330 char_u *argv[1];
5331
5332 if (im_is_active)
5333 argv[0] = (char_u *)"1";
5334 else
5335 argv[0] = (char_u *)"0";
5336 (void)call_func_retnr(p_imaf, 1, argv, FALSE);
5337 }
Bram Moolenaarf0327f62013-06-28 20:16:55 +02005338 else
5339# endif
5340 if (im_activatekey_keyval != GDK_VoidSymbol)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005341 {
5342 if (im_is_active)
5343 {
5344 g_signal_handler_block(xic, im_commit_handler_id);
5345 im_synthesize_keypress(im_activatekey_keyval,
5346 im_activatekey_state);
5347 g_signal_handler_unblock(xic, im_commit_handler_id);
5348 }
5349 }
5350 else
5351 {
5352 im_shutdown();
5353 xim_init();
5354 xim_set_focus(gui.in_focus);
5355 }
5356 }
5357 }
5358
5359 preedit_start_col = MAXCOL;
5360 xim_has_preediting = FALSE;
5361}
5362
5363 int
5364xim_queue_key_press_event(GdkEventKey *event, int down)
5365{
5366 if (down)
5367 {
5368 /*
5369 * Workaround GTK2 XIM 'feature' that always converts keypad keys to
5370 * chars., even when not part of an IM sequence (ref. feature of
5371 * gdk/gdkkeyuni.c).
5372 * Flag any keypad keys that might represent a single char.
5373 * If this (on its own - i.e., not part of an IM sequence) is
5374 * committed while we're processing one of these keys, we can ignore
5375 * that commit and go ahead & process it ourselves. That way we can
5376 * still distinguish keypad keys for use in mappings.
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00005377 * Also add GDK_space to make <S-Space> work.
Bram Moolenaar071d4272004-06-13 20:20:40 +00005378 */
5379 switch (event->keyval)
5380 {
5381 case GDK_KP_Add: xim_expected_char = '+'; break;
5382 case GDK_KP_Subtract: xim_expected_char = '-'; break;
5383 case GDK_KP_Divide: xim_expected_char = '/'; break;
5384 case GDK_KP_Multiply: xim_expected_char = '*'; break;
5385 case GDK_KP_Decimal: xim_expected_char = '.'; break;
5386 case GDK_KP_Equal: xim_expected_char = '='; break;
5387 case GDK_KP_0: xim_expected_char = '0'; break;
5388 case GDK_KP_1: xim_expected_char = '1'; break;
5389 case GDK_KP_2: xim_expected_char = '2'; break;
5390 case GDK_KP_3: xim_expected_char = '3'; break;
5391 case GDK_KP_4: xim_expected_char = '4'; break;
5392 case GDK_KP_5: xim_expected_char = '5'; break;
5393 case GDK_KP_6: xim_expected_char = '6'; break;
5394 case GDK_KP_7: xim_expected_char = '7'; break;
5395 case GDK_KP_8: xim_expected_char = '8'; break;
5396 case GDK_KP_9: xim_expected_char = '9'; break;
Bram Moolenaar3577c6f2008-06-24 21:16:56 +00005397 case GDK_space: xim_expected_char = ' '; break;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005398 default: xim_expected_char = NUL;
5399 }
5400 xim_ignored_char = FALSE;
5401 }
5402
5403 /*
5404 * When typing fFtT, XIM may be activated. Thus it must pass
5405 * gtk_im_context_filter_keypress() in Normal mode.
5406 * And while doing :sh too.
5407 */
5408 if (xic != NULL && !p_imdisable
5409 && (State & (INSERT | CMDLINE | NORMAL | EXTERNCMD)) != 0)
5410 {
5411 /*
5412 * Filter 'imactivatekey' and map it to CTRL-^. This way, Vim is
5413 * always aware of the current status of IM, and can even emulate
5414 * the activation key for modules that don't support one.
5415 */
5416 if (event->keyval == im_activatekey_keyval
5417 && (event->state & im_activatekey_state) == im_activatekey_state)
5418 {
5419 unsigned int state_mask;
5420
5421 /* Require the state of the 3 most used modifiers to match exactly.
5422 * Otherwise e.g. <S-C-space> would be unusable for other purposes
5423 * if the IM activate key is <S-space>. */
5424 state_mask = im_activatekey_state;
5425 state_mask |= ((int)GDK_SHIFT_MASK | (int)GDK_CONTROL_MASK
5426 | (int)GDK_MOD1_MASK);
5427
5428 if ((event->state & state_mask) != im_activatekey_state)
5429 return FALSE;
5430
5431 /* Don't send it a second time on GDK_KEY_RELEASE. */
5432 if (event->type != GDK_KEY_PRESS)
5433 return TRUE;
5434
Bram Moolenaar658b74a2006-03-18 21:33:02 +00005435 if (map_to_exists_mode((char_u *)"", LANGMAP, FALSE))
Bram Moolenaar071d4272004-06-13 20:20:40 +00005436 {
5437 im_set_active(FALSE);
5438
5439 /* ":lmap" mappings exists, toggle use of mappings. */
5440 State ^= LANGMAP;
5441 if (State & LANGMAP)
5442 {
5443 curbuf->b_p_iminsert = B_IMODE_NONE;
5444 State &= ~LANGMAP;
5445 }
5446 else
5447 {
5448 curbuf->b_p_iminsert = B_IMODE_LMAP;
5449 State |= LANGMAP;
5450 }
5451 return TRUE;
5452 }
5453
5454 return gtk_im_context_filter_keypress(xic, event);
5455 }
5456
5457 /* Don't filter events through the IM context if IM isn't active
5458 * right now. Unlike with GTK+ 1.2 we cannot rely on the IM module
5459 * not doing anything before the activation key was sent. */
5460 if (im_activatekey_keyval == GDK_VoidSymbol || im_is_active)
5461 {
5462 int imresult = gtk_im_context_filter_keypress(xic, event);
5463
5464 /* Some XIM send following sequence:
5465 * 1. preedited string.
5466 * 2. committed string.
5467 * 3. line changed key.
5468 * 4. preedited string.
5469 * 5. remove preedited string.
5470 * if 3, Vim can't move back the above line for 5.
5471 * thus, this part should not parse the key. */
5472 if (!imresult && preedit_start_col != MAXCOL
5473 && event->keyval == GDK_Return)
5474 {
5475 im_synthesize_keypress(GDK_Return, 0U);
5476 return FALSE;
5477 }
5478
5479 /* If XIM tried to commit a keypad key as a single char.,
5480 * ignore it so we can use the keypad key 'raw', for mappings. */
5481 if (xim_expected_char != NUL && xim_ignored_char)
5482 /* We had a keypad key, and XIM tried to thieve it */
5483 return FALSE;
5484
Bram Moolenaar673214b2011-07-27 18:25:44 +02005485 /* This is supposed to fix a problem with iBus, that space
5486 * characters don't work in input mode. */
5487 xim_expected_char = NUL;
5488
Bram Moolenaar071d4272004-06-13 20:20:40 +00005489 /* Normal processing */
5490 return imresult;
5491 }
5492 }
5493
5494 return FALSE;
5495}
5496
5497 int
5498im_get_status(void)
5499{
Bram Moolenaarf0327f62013-06-28 20:16:55 +02005500# ifdef FEAT_EVAL
Bram Moolenaarabab85a2013-06-26 19:18:05 +02005501 if (p_imsf[0] != NUL)
5502 {
5503 int is_active;
5504
5505 /* FIXME: Don't execute user function in unsafe situation. */
Bram Moolenaarf0327f62013-06-28 20:16:55 +02005506 if (exiting
5507# ifdef FEAT_AUTOCMD
5508 || is_autocmd_blocked()
5509# endif
5510 )
Bram Moolenaarabab85a2013-06-26 19:18:05 +02005511 return FALSE;
5512 /* FIXME: :py print 'xxx' is shown duplicate result.
5513 * Use silent to avoid it. */
5514 ++msg_silent;
5515 is_active = call_func_retnr(p_imsf, 0, NULL, FALSE);
5516 --msg_silent;
5517 return (is_active > 0);
5518 }
Bram Moolenaarf0327f62013-06-28 20:16:55 +02005519# endif
Bram Moolenaar071d4272004-06-13 20:20:40 +00005520 return im_is_active;
5521}
5522
Bram Moolenaar64404472010-06-26 06:24:45 +02005523 int
5524preedit_get_status(void)
5525{
5526 return preedit_is_active;
5527}
5528
5529 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005530im_is_preediting(void)
Bram Moolenaar64404472010-06-26 06:24:45 +02005531{
5532 return xim_has_preediting;
5533}
5534
Bram Moolenaar0eda7ac2010-06-26 05:38:18 +02005535# else /* !FEAT_GUI_GTK */
Bram Moolenaar071d4272004-06-13 20:20:40 +00005536
5537static int xim_is_active = FALSE; /* XIM should be active in the current
5538 mode */
5539static int xim_has_focus = FALSE; /* XIM is really being used for Vim */
5540#ifdef FEAT_GUI_X11
5541static XIMStyle input_style;
5542static int status_area_enabled = TRUE;
5543#endif
5544
Bram Moolenaar071d4272004-06-13 20:20:40 +00005545/*
5546 * Switch using XIM on/off. This is used by the code that changes "State".
5547 */
5548 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005549im_set_active(int active)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005550{
5551 if (xic == NULL)
5552 return;
5553
5554 /* If 'imdisable' is set, XIM is never active. */
5555 if (p_imdisable)
5556 active = FALSE;
Bram Moolenaar860cae12010-06-05 23:22:07 +02005557#if !defined(FEAT_GUI_GTK)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005558 else if (input_style & XIMPreeditPosition)
5559 /* There is a problem in switching XIM off when preediting is used,
5560 * and it is not clear how this can be solved. For now, keep XIM on
5561 * all the time, like it was done in Vim 5.8. */
5562 active = TRUE;
5563#endif
5564
5565 /* Remember the active state, it is needed when Vim gets keyboard focus. */
5566 xim_is_active = active;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005567 xim_set_preedit();
5568}
5569
5570/*
5571 * Adjust using XIM for gaining or losing keyboard focus. Also called when
5572 * "xim_is_active" changes.
5573 */
5574 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005575xim_set_focus(int focus)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005576{
5577 if (xic == NULL)
5578 return;
5579
5580 /*
5581 * XIM only gets focus when the Vim window has keyboard focus and XIM has
5582 * been set active for the current mode.
5583 */
5584 if (focus && xim_is_active)
5585 {
5586 if (!xim_has_focus)
5587 {
5588 xim_has_focus = TRUE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005589 XSetICFocus(xic);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005590 }
5591 }
5592 else
5593 {
5594 if (xim_has_focus)
5595 {
5596 xim_has_focus = FALSE;
Bram Moolenaar071d4272004-06-13 20:20:40 +00005597 XUnsetICFocus(xic);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005598 }
5599 }
5600}
5601
Bram Moolenaar071d4272004-06-13 20:20:40 +00005602 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005603im_set_position(int row UNUSED, int col UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005604{
5605 xim_set_preedit();
5606}
5607
5608/*
5609 * Set the XIM to the current cursor position.
5610 */
5611 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005612xim_set_preedit(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005613{
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005614 XVaNestedList attr_list;
5615 XRectangle spot_area;
5616 XPoint over_spot;
5617 int line_space;
5618
Bram Moolenaar60bb4e12010-09-18 13:36:49 +02005619 if (xic == NULL)
5620 return;
5621
5622 xim_set_focus(TRUE);
5623
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005624 if (!xim_has_focus)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005625 {
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005626 /* hide XIM cursor */
5627 over_spot.x = 0;
5628 over_spot.y = -100; /* arbitrary invisible position */
5629 attr_list = (XVaNestedList) XVaCreateNestedList(0,
5630 XNSpotLocation,
5631 &over_spot,
5632 NULL);
5633 XSetICValues(xic, XNPreeditAttributes, attr_list, NULL);
5634 XFree(attr_list);
5635 return;
5636 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00005637
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005638 if (input_style & XIMPreeditPosition)
5639 {
Bram Moolenaar071d4272004-06-13 20:20:40 +00005640 if (xim_fg_color == INVALCOLOR)
5641 {
5642 xim_fg_color = gui.def_norm_pixel;
5643 xim_bg_color = gui.def_back_pixel;
5644 }
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005645 over_spot.x = TEXT_X(gui.col);
5646 over_spot.y = TEXT_Y(gui.row);
5647 spot_area.x = 0;
5648 spot_area.y = 0;
5649 spot_area.height = gui.char_height * Rows;
5650 spot_area.width = gui.char_width * Columns;
5651 line_space = gui.char_height;
5652 attr_list = (XVaNestedList) XVaCreateNestedList(0,
5653 XNSpotLocation, &over_spot,
5654 XNForeground, (Pixel) xim_fg_color,
5655 XNBackground, (Pixel) xim_bg_color,
5656 XNArea, &spot_area,
5657 XNLineSpace, line_space,
5658 NULL);
5659 if (XSetICValues(xic, XNPreeditAttributes, attr_list, NULL))
5660 EMSG(_("E284: Cannot set IC values"));
5661 XFree(attr_list);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005662 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00005663}
5664
Bram Moolenaar182c5be2010-06-25 05:37:59 +02005665#if defined(FEAT_GUI_X11)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005666static char e_xim[] = N_("E285: Failed to create input context");
5667#endif
5668
5669#if defined(FEAT_GUI_X11) || defined(PROTO)
5670# if defined(XtSpecificationRelease) && XtSpecificationRelease >= 6 && !defined(sun)
5671# define USE_X11R6_XIM
5672# endif
5673
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +01005674static int xim_real_init(Window x11_window, Display *x11_display);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005675
5676
5677#ifdef USE_X11R6_XIM
Bram Moolenaar92b8b2d2016-01-29 22:36:45 +01005678static void xim_instantiate_cb(Display *display, XPointer client_data, XPointer call_data);
5679static void xim_destroy_cb(XIM im, XPointer client_data, XPointer call_data);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005680
Bram Moolenaar071d4272004-06-13 20:20:40 +00005681 static void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005682xim_instantiate_cb(
5683 Display *display,
5684 XPointer client_data UNUSED,
5685 XPointer call_data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005686{
5687 Window x11_window;
5688 Display *x11_display;
5689
5690#ifdef XIM_DEBUG
5691 xim_log("xim_instantiate_cb()\n");
5692#endif
5693
5694 gui_get_x11_windis(&x11_window, &x11_display);
5695 if (display != x11_display)
5696 return;
5697
5698 xim_real_init(x11_window, x11_display);
Bram Moolenaar2e2a2812006-03-27 20:55:21 +00005699 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005700 if (xic != NULL)
5701 XUnregisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
5702 xim_instantiate_cb, NULL);
5703}
5704
Bram Moolenaar071d4272004-06-13 20:20:40 +00005705 static void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005706xim_destroy_cb(
5707 XIM im UNUSED,
5708 XPointer client_data UNUSED,
5709 XPointer call_data UNUSED)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005710{
5711 Window x11_window;
5712 Display *x11_display;
5713
5714#ifdef XIM_DEBUG
5715 xim_log("xim_destroy_cb()\n");
5716#endif
5717 gui_get_x11_windis(&x11_window, &x11_display);
5718
5719 xic = NULL;
5720 status_area_enabled = FALSE;
5721
Bram Moolenaar2e2a2812006-03-27 20:55:21 +00005722 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005723
5724 XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
5725 xim_instantiate_cb, NULL);
5726}
5727#endif
5728
5729 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005730xim_init(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005731{
5732 Window x11_window;
5733 Display *x11_display;
5734
5735#ifdef XIM_DEBUG
5736 xim_log("xim_init()\n");
5737#endif
5738
5739 gui_get_x11_windis(&x11_window, &x11_display);
5740
5741 xic = NULL;
5742
5743 if (xim_real_init(x11_window, x11_display))
5744 return;
5745
Bram Moolenaar2e2a2812006-03-27 20:55:21 +00005746 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005747
5748#ifdef USE_X11R6_XIM
5749 XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
5750 xim_instantiate_cb, NULL);
5751#endif
5752}
5753
5754 static int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005755xim_real_init(Window x11_window, Display *x11_display)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005756{
5757 int i;
5758 char *p,
5759 *s,
5760 *ns,
5761 *end,
5762 tmp[1024];
5763#define IMLEN_MAX 40
5764 char buf[IMLEN_MAX + 7];
5765 XIM xim = NULL;
5766 XIMStyles *xim_styles;
5767 XIMStyle this_input_style = 0;
5768 Boolean found;
5769 XPoint over_spot;
5770 XVaNestedList preedit_list, status_list;
5771
5772 input_style = 0;
5773 status_area_enabled = FALSE;
5774
5775 if (xic != NULL)
5776 return FALSE;
5777
5778 if (gui.rsrc_input_method != NULL && *gui.rsrc_input_method != NUL)
5779 {
5780 strcpy(tmp, gui.rsrc_input_method);
5781 for (ns = s = tmp; ns != NULL && *s != NUL;)
5782 {
5783 s = (char *)skipwhite((char_u *)s);
5784 if (*s == NUL)
5785 break;
5786 if ((ns = end = strchr(s, ',')) == NULL)
5787 end = s + strlen(s);
5788 while (isspace(((char_u *)end)[-1]))
5789 end--;
5790 *end = NUL;
5791
5792 if (strlen(s) <= IMLEN_MAX)
5793 {
5794 strcpy(buf, "@im=");
5795 strcat(buf, s);
5796 if ((p = XSetLocaleModifiers(buf)) != NULL && *p != NUL
5797 && (xim = XOpenIM(x11_display, NULL, NULL, NULL))
5798 != NULL)
5799 break;
5800 }
5801
5802 s = ns + 1;
5803 }
5804 }
5805
5806 if (xim == NULL && (p = XSetLocaleModifiers("")) != NULL && *p != NUL)
5807 xim = XOpenIM(x11_display, NULL, NULL, NULL);
5808
5809 /* This is supposed to be useful to obtain characters through
5810 * XmbLookupString() without really using a XIM. */
5811 if (xim == NULL && (p = XSetLocaleModifiers("@im=none")) != NULL
5812 && *p != NUL)
5813 xim = XOpenIM(x11_display, NULL, NULL, NULL);
5814
5815 if (xim == NULL)
5816 {
5817 /* Only give this message when verbose is set, because too many people
5818 * got this message when they didn't want to use a XIM. */
5819 if (p_verbose > 0)
Bram Moolenaara04f10b2005-05-31 22:09:46 +00005820 {
5821 verbose_enter();
Bram Moolenaar071d4272004-06-13 20:20:40 +00005822 EMSG(_("E286: Failed to open input method"));
Bram Moolenaara04f10b2005-05-31 22:09:46 +00005823 verbose_leave();
5824 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00005825 return FALSE;
5826 }
5827
5828#ifdef USE_X11R6_XIM
5829 {
5830 XIMCallback destroy_cb;
5831
5832 destroy_cb.callback = xim_destroy_cb;
5833 destroy_cb.client_data = NULL;
5834 if (XSetIMValues(xim, XNDestroyCallback, &destroy_cb, NULL))
5835 EMSG(_("E287: Warning: Could not set destroy callback to IM"));
5836 }
5837#endif
5838
5839 if (XGetIMValues(xim, XNQueryInputStyle, &xim_styles, NULL) || !xim_styles)
5840 {
5841 EMSG(_("E288: input method doesn't support any style"));
5842 XCloseIM(xim);
5843 return FALSE;
5844 }
5845
5846 found = False;
5847 strcpy(tmp, gui.rsrc_preedit_type_name);
5848 for (s = tmp; s && !found; )
5849 {
5850 while (*s && isspace((unsigned char)*s))
5851 s++;
5852 if (!*s)
5853 break;
5854 if ((ns = end = strchr(s, ',')) != 0)
5855 ns++;
5856 else
5857 end = s + strlen(s);
5858 while (isspace((unsigned char)*end))
5859 end--;
5860 *end = '\0';
5861
5862 if (!strcmp(s, "OverTheSpot"))
5863 this_input_style = (XIMPreeditPosition | XIMStatusArea);
5864 else if (!strcmp(s, "OffTheSpot"))
5865 this_input_style = (XIMPreeditArea | XIMStatusArea);
5866 else if (!strcmp(s, "Root"))
5867 this_input_style = (XIMPreeditNothing | XIMStatusNothing);
5868
5869 for (i = 0; (unsigned short)i < xim_styles->count_styles; i++)
5870 {
5871 if (this_input_style == xim_styles->supported_styles[i])
5872 {
5873 found = True;
5874 break;
5875 }
5876 }
5877 if (!found)
5878 for (i = 0; (unsigned short)i < xim_styles->count_styles; i++)
5879 {
5880 if ((xim_styles->supported_styles[i] & this_input_style)
5881 == (this_input_style & ~XIMStatusArea))
5882 {
5883 this_input_style &= ~XIMStatusArea;
5884 found = True;
5885 break;
5886 }
5887 }
5888
5889 s = ns;
5890 }
5891 XFree(xim_styles);
5892
5893 if (!found)
5894 {
5895 /* Only give this message when verbose is set, because too many people
5896 * got this message when they didn't want to use a XIM. */
5897 if (p_verbose > 0)
Bram Moolenaara04f10b2005-05-31 22:09:46 +00005898 {
5899 verbose_enter();
Bram Moolenaar071d4272004-06-13 20:20:40 +00005900 EMSG(_("E289: input method doesn't support my preedit type"));
Bram Moolenaara04f10b2005-05-31 22:09:46 +00005901 verbose_leave();
5902 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00005903 XCloseIM(xim);
5904 return FALSE;
5905 }
5906
5907 over_spot.x = TEXT_X(gui.col);
5908 over_spot.y = TEXT_Y(gui.row);
5909 input_style = this_input_style;
5910
5911 /* A crash was reported when trying to pass gui.norm_font as XNFontSet,
5912 * thus that has been removed. Hopefully the default works... */
5913#ifdef FEAT_XFONTSET
5914 if (gui.fontset != NOFONTSET)
5915 {
5916 preedit_list = XVaCreateNestedList(0,
5917 XNSpotLocation, &over_spot,
5918 XNForeground, (Pixel)gui.def_norm_pixel,
5919 XNBackground, (Pixel)gui.def_back_pixel,
5920 XNFontSet, (XFontSet)gui.fontset,
5921 NULL);
5922 status_list = XVaCreateNestedList(0,
5923 XNForeground, (Pixel)gui.def_norm_pixel,
5924 XNBackground, (Pixel)gui.def_back_pixel,
5925 XNFontSet, (XFontSet)gui.fontset,
5926 NULL);
5927 }
5928 else
5929#endif
5930 {
5931 preedit_list = XVaCreateNestedList(0,
5932 XNSpotLocation, &over_spot,
5933 XNForeground, (Pixel)gui.def_norm_pixel,
5934 XNBackground, (Pixel)gui.def_back_pixel,
5935 NULL);
5936 status_list = XVaCreateNestedList(0,
5937 XNForeground, (Pixel)gui.def_norm_pixel,
5938 XNBackground, (Pixel)gui.def_back_pixel,
5939 NULL);
5940 }
5941
5942 xic = XCreateIC(xim,
5943 XNInputStyle, input_style,
5944 XNClientWindow, x11_window,
5945 XNFocusWindow, gui.wid,
5946 XNPreeditAttributes, preedit_list,
5947 XNStatusAttributes, status_list,
5948 NULL);
5949 XFree(status_list);
5950 XFree(preedit_list);
5951 if (xic != NULL)
5952 {
5953 if (input_style & XIMStatusArea)
5954 {
5955 xim_set_status_area();
5956 status_area_enabled = TRUE;
5957 }
5958 else
Bram Moolenaar2e2a2812006-03-27 20:55:21 +00005959 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
Bram Moolenaar071d4272004-06-13 20:20:40 +00005960 }
5961 else
5962 {
5963 EMSG(_(e_xim));
5964 XCloseIM(xim);
5965 return FALSE;
5966 }
5967
5968 return TRUE;
5969}
5970
5971#endif /* FEAT_GUI_X11 */
5972
Bram Moolenaar071d4272004-06-13 20:20:40 +00005973/*
5974 * Get IM status. When IM is on, return TRUE. Else return FALSE.
5975 * FIXME: This doesn't work correctly: Having focus doesn't always mean XIM is
5976 * active, when not having focus XIM may still be active (e.g., when using a
5977 * tear-off menu item).
5978 */
5979 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005980im_get_status(void)
Bram Moolenaar071d4272004-06-13 20:20:40 +00005981{
Bram Moolenaar071d4272004-06-13 20:20:40 +00005982 return xim_has_focus;
5983}
5984
Bram Moolenaar0eda7ac2010-06-26 05:38:18 +02005985# endif /* !FEAT_GUI_GTK */
Bram Moolenaar071d4272004-06-13 20:20:40 +00005986
Bram Moolenaar64404472010-06-26 06:24:45 +02005987# if !defined(FEAT_GUI_GTK) || defined(PROTO)
5988/*
5989 * Set up the status area.
5990 *
5991 * This should use a separate Widget, but that seems not possible, because
5992 * preedit_area and status_area should be set to the same window as for the
5993 * text input. Unfortunately this means the status area pollutes the text
5994 * window...
5995 */
5996 void
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01005997xim_set_status_area(void)
Bram Moolenaarc236c162008-07-13 17:41:49 +00005998{
Bram Moolenaar64404472010-06-26 06:24:45 +02005999 XVaNestedList preedit_list = 0, status_list = 0, list = 0;
6000 XRectangle pre_area, status_area;
6001
Bram Moolenaar60bb4e12010-09-18 13:36:49 +02006002 if (xic == NULL)
6003 return;
6004
Bram Moolenaar64404472010-06-26 06:24:45 +02006005 if (input_style & XIMStatusArea)
6006 {
6007 if (input_style & XIMPreeditArea)
6008 {
6009 XRectangle *needed_rect;
6010
6011 /* to get status_area width */
6012 status_list = XVaCreateNestedList(0, XNAreaNeeded,
6013 &needed_rect, NULL);
6014 XGetICValues(xic, XNStatusAttributes, status_list, NULL);
6015 XFree(status_list);
6016
6017 status_area.width = needed_rect->width;
6018 }
6019 else
6020 status_area.width = gui.char_width * Columns;
6021
6022 status_area.x = 0;
6023 status_area.y = gui.char_height * Rows + gui.border_offset;
6024 if (gui.which_scrollbars[SBAR_BOTTOM])
6025 status_area.y += gui.scrollbar_height;
6026#ifdef FEAT_MENU
6027 if (gui.menu_is_active)
6028 status_area.y += gui.menu_height;
6029#endif
6030 status_area.height = gui.char_height;
6031 status_list = XVaCreateNestedList(0, XNArea, &status_area, NULL);
6032 }
6033 else
6034 {
6035 status_area.x = 0;
6036 status_area.y = gui.char_height * Rows + gui.border_offset;
6037 if (gui.which_scrollbars[SBAR_BOTTOM])
6038 status_area.y += gui.scrollbar_height;
6039#ifdef FEAT_MENU
6040 if (gui.menu_is_active)
6041 status_area.y += gui.menu_height;
6042#endif
6043 status_area.width = 0;
6044 status_area.height = gui.char_height;
6045 }
6046
6047 if (input_style & XIMPreeditArea) /* off-the-spot */
6048 {
6049 pre_area.x = status_area.x + status_area.width;
6050 pre_area.y = gui.char_height * Rows + gui.border_offset;
6051 pre_area.width = gui.char_width * Columns - pre_area.x;
6052 if (gui.which_scrollbars[SBAR_BOTTOM])
6053 pre_area.y += gui.scrollbar_height;
6054#ifdef FEAT_MENU
6055 if (gui.menu_is_active)
6056 pre_area.y += gui.menu_height;
6057#endif
6058 pre_area.height = gui.char_height;
6059 preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL);
6060 }
6061 else if (input_style & XIMPreeditPosition) /* over-the-spot */
6062 {
6063 pre_area.x = 0;
6064 pre_area.y = 0;
6065 pre_area.height = gui.char_height * Rows;
6066 pre_area.width = gui.char_width * Columns;
6067 preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL);
6068 }
6069
6070 if (preedit_list && status_list)
6071 list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list,
6072 XNStatusAttributes, status_list, NULL);
6073 else if (preedit_list)
6074 list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list,
6075 NULL);
6076 else if (status_list)
6077 list = XVaCreateNestedList(0, XNStatusAttributes, status_list,
6078 NULL);
6079 else
6080 list = NULL;
6081
6082 if (list)
6083 {
6084 XSetICValues(xic, XNVaNestedList, list, NULL);
6085 XFree(list);
6086 }
6087 if (status_list)
6088 XFree(status_list);
6089 if (preedit_list)
6090 XFree(preedit_list);
6091}
6092
6093 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006094xim_get_status_area_height(void)
Bram Moolenaar64404472010-06-26 06:24:45 +02006095{
6096 if (status_area_enabled)
6097 return gui.char_height;
6098 return 0;
Bram Moolenaarc236c162008-07-13 17:41:49 +00006099}
6100# endif
6101
Bram Moolenaar071d4272004-06-13 20:20:40 +00006102#endif /* FEAT_XIM */
6103
6104#if defined(FEAT_MBYTE) || defined(PROTO)
6105
6106/*
6107 * Setup "vcp" for conversion from "from" to "to".
6108 * The names must have been made canonical with enc_canonize().
6109 * vcp->vc_type must have been initialized to CONV_NONE.
6110 * Note: cannot be used for conversion from/to ucs-2 and ucs-4 (will use utf-8
6111 * instead).
6112 * Afterwards invoke with "from" and "to" equal to NULL to cleanup.
6113 * Return FAIL when conversion is not supported, OK otherwise.
6114 */
6115 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006116convert_setup(vimconv_T *vcp, char_u *from, char_u *to)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006117{
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006118 return convert_setup_ext(vcp, from, TRUE, to, TRUE);
6119}
6120
6121/*
6122 * As convert_setup(), but only when from_unicode_is_utf8 is TRUE will all
6123 * "from" unicode charsets be considered utf-8. Same for "to".
6124 */
6125 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006126convert_setup_ext(
6127 vimconv_T *vcp,
6128 char_u *from,
6129 int from_unicode_is_utf8,
6130 char_u *to,
6131 int to_unicode_is_utf8)
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006132{
Bram Moolenaar071d4272004-06-13 20:20:40 +00006133 int from_prop;
6134 int to_prop;
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006135 int from_is_utf8;
6136 int to_is_utf8;
Bram Moolenaar071d4272004-06-13 20:20:40 +00006137
6138 /* Reset to no conversion. */
6139# ifdef USE_ICONV
6140 if (vcp->vc_type == CONV_ICONV && vcp->vc_fd != (iconv_t)-1)
6141 iconv_close(vcp->vc_fd);
6142# endif
6143 vcp->vc_type = CONV_NONE;
6144 vcp->vc_factor = 1;
6145 vcp->vc_fail = FALSE;
6146
6147 /* No conversion when one of the names is empty or they are equal. */
6148 if (from == NULL || *from == NUL || to == NULL || *to == NUL
6149 || STRCMP(from, to) == 0)
6150 return OK;
6151
6152 from_prop = enc_canon_props(from);
6153 to_prop = enc_canon_props(to);
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006154 if (from_unicode_is_utf8)
6155 from_is_utf8 = from_prop & ENC_UNICODE;
6156 else
6157 from_is_utf8 = from_prop == ENC_UNICODE;
6158 if (to_unicode_is_utf8)
6159 to_is_utf8 = to_prop & ENC_UNICODE;
6160 else
6161 to_is_utf8 = to_prop == ENC_UNICODE;
6162
6163 if ((from_prop & ENC_LATIN1) && to_is_utf8)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006164 {
6165 /* Internal latin1 -> utf-8 conversion. */
6166 vcp->vc_type = CONV_TO_UTF8;
6167 vcp->vc_factor = 2; /* up to twice as long */
6168 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006169 else if ((from_prop & ENC_LATIN9) && to_is_utf8)
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006170 {
6171 /* Internal latin9 -> utf-8 conversion. */
6172 vcp->vc_type = CONV_9_TO_UTF8;
6173 vcp->vc_factor = 3; /* up to three as long (euro sign) */
6174 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006175 else if (from_is_utf8 && (to_prop & ENC_LATIN1))
Bram Moolenaar071d4272004-06-13 20:20:40 +00006176 {
6177 /* Internal utf-8 -> latin1 conversion. */
6178 vcp->vc_type = CONV_TO_LATIN1;
6179 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006180 else if (from_is_utf8 && (to_prop & ENC_LATIN9))
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006181 {
6182 /* Internal utf-8 -> latin9 conversion. */
6183 vcp->vc_type = CONV_TO_LATIN9;
6184 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00006185#ifdef WIN3264
6186 /* Win32-specific codepage <-> codepage conversion without iconv. */
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006187 else if ((from_is_utf8 || encname2codepage(from) > 0)
6188 && (to_is_utf8 || encname2codepage(to) > 0))
Bram Moolenaar071d4272004-06-13 20:20:40 +00006189 {
6190 vcp->vc_type = CONV_CODEPAGE;
6191 vcp->vc_factor = 2; /* up to twice as long */
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006192 vcp->vc_cpfrom = from_is_utf8 ? 0 : encname2codepage(from);
6193 vcp->vc_cpto = to_is_utf8 ? 0 : encname2codepage(to);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006194 }
6195#endif
6196#ifdef MACOS_X
6197 else if ((from_prop & ENC_MACROMAN) && (to_prop & ENC_LATIN1))
6198 {
6199 vcp->vc_type = CONV_MAC_LATIN1;
6200 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006201 else if ((from_prop & ENC_MACROMAN) && to_is_utf8)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006202 {
6203 vcp->vc_type = CONV_MAC_UTF8;
6204 vcp->vc_factor = 2; /* up to twice as long */
6205 }
6206 else if ((from_prop & ENC_LATIN1) && (to_prop & ENC_MACROMAN))
6207 {
6208 vcp->vc_type = CONV_LATIN1_MAC;
6209 }
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006210 else if (from_is_utf8 && (to_prop & ENC_MACROMAN))
Bram Moolenaar071d4272004-06-13 20:20:40 +00006211 {
6212 vcp->vc_type = CONV_UTF8_MAC;
6213 }
6214#endif
6215# ifdef USE_ICONV
6216 else
6217 {
6218 /* Use iconv() for conversion. */
6219 vcp->vc_fd = (iconv_t)my_iconv_open(
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006220 to_is_utf8 ? (char_u *)"utf-8" : to,
6221 from_is_utf8 ? (char_u *)"utf-8" : from);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006222 if (vcp->vc_fd != (iconv_t)-1)
6223 {
6224 vcp->vc_type = CONV_ICONV;
6225 vcp->vc_factor = 4; /* could be longer too... */
6226 }
6227 }
6228# endif
6229 if (vcp->vc_type == CONV_NONE)
6230 return FAIL;
Bram Moolenaardf177f62005-02-22 08:39:57 +00006231
Bram Moolenaar071d4272004-06-13 20:20:40 +00006232 return OK;
6233}
6234
6235#if defined(FEAT_GUI) || defined(AMIGA) || defined(WIN3264) \
Bram Moolenaar48e330a2016-02-23 14:53:34 +01006236 || defined(PROTO)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006237/*
6238 * Do conversion on typed input characters in-place.
6239 * The input and output are not NUL terminated!
6240 * Returns the length after conversion.
6241 */
6242 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006243convert_input(char_u *ptr, int len, int maxlen)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006244{
6245 return convert_input_safe(ptr, len, maxlen, NULL, NULL);
6246}
6247#endif
6248
6249/*
6250 * Like convert_input(), but when there is an incomplete byte sequence at the
6251 * end return that as an allocated string in "restp" and set "*restlenp" to
6252 * the length. If "restp" is NULL it is not used.
6253 */
6254 int
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006255convert_input_safe(
6256 char_u *ptr,
6257 int len,
6258 int maxlen,
6259 char_u **restp,
6260 int *restlenp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006261{
6262 char_u *d;
6263 int dlen = len;
6264 int unconvertlen = 0;
6265
6266 d = string_convert_ext(&input_conv, ptr, &dlen,
6267 restp == NULL ? NULL : &unconvertlen);
6268 if (d != NULL)
6269 {
6270 if (dlen <= maxlen)
6271 {
6272 if (unconvertlen > 0)
6273 {
6274 /* Move the unconverted characters to allocated memory. */
6275 *restp = alloc(unconvertlen);
6276 if (*restp != NULL)
6277 mch_memmove(*restp, ptr + len - unconvertlen, unconvertlen);
6278 *restlenp = unconvertlen;
6279 }
6280 mch_memmove(ptr, d, dlen);
6281 }
6282 else
6283 /* result is too long, keep the unconverted text (the caller must
6284 * have done something wrong!) */
6285 dlen = len;
6286 vim_free(d);
6287 }
6288 return dlen;
6289}
6290
Bram Moolenaar071d4272004-06-13 20:20:40 +00006291/*
6292 * Convert text "ptr[*lenp]" according to "vcp".
6293 * Returns the result in allocated memory and sets "*lenp".
6294 * When "lenp" is NULL, use NUL terminated strings.
6295 * Illegal chars are often changed to "?", unless vcp->vc_fail is set.
6296 * When something goes wrong, NULL is returned and "*lenp" is unchanged.
6297 */
6298 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006299string_convert(
6300 vimconv_T *vcp,
6301 char_u *ptr,
6302 int *lenp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006303{
6304 return string_convert_ext(vcp, ptr, lenp, NULL);
6305}
6306
6307/*
6308 * Like string_convert(), but when "unconvlenp" is not NULL and there are is
6309 * an incomplete sequence at the end it is not converted and "*unconvlenp" is
6310 * set to the number of remaining bytes.
6311 */
6312 char_u *
Bram Moolenaar52ea13d2016-01-30 18:51:09 +01006313string_convert_ext(
6314 vimconv_T *vcp,
6315 char_u *ptr,
6316 int *lenp,
6317 int *unconvlenp)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006318{
6319 char_u *retval = NULL;
6320 char_u *d;
6321 int len;
6322 int i;
6323 int l;
6324 int c;
6325
6326 if (lenp == NULL)
6327 len = (int)STRLEN(ptr);
6328 else
6329 len = *lenp;
6330 if (len == 0)
6331 return vim_strsave((char_u *)"");
6332
6333 switch (vcp->vc_type)
6334 {
6335 case CONV_TO_UTF8: /* latin1 to utf-8 conversion */
6336 retval = alloc(len * 2 + 1);
6337 if (retval == NULL)
6338 break;
6339 d = retval;
6340 for (i = 0; i < len; ++i)
6341 {
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006342 c = ptr[i];
6343 if (c < 0x80)
6344 *d++ = c;
Bram Moolenaar071d4272004-06-13 20:20:40 +00006345 else
6346 {
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006347 *d++ = 0xc0 + ((unsigned)c >> 6);
6348 *d++ = 0x80 + (c & 0x3f);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006349 }
6350 }
6351 *d = NUL;
6352 if (lenp != NULL)
6353 *lenp = (int)(d - retval);
6354 break;
6355
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006356 case CONV_9_TO_UTF8: /* latin9 to utf-8 conversion */
6357 retval = alloc(len * 3 + 1);
6358 if (retval == NULL)
6359 break;
6360 d = retval;
6361 for (i = 0; i < len; ++i)
6362 {
6363 c = ptr[i];
6364 switch (c)
6365 {
6366 case 0xa4: c = 0x20ac; break; /* euro */
6367 case 0xa6: c = 0x0160; break; /* S hat */
6368 case 0xa8: c = 0x0161; break; /* S -hat */
6369 case 0xb4: c = 0x017d; break; /* Z hat */
6370 case 0xb8: c = 0x017e; break; /* Z -hat */
6371 case 0xbc: c = 0x0152; break; /* OE */
6372 case 0xbd: c = 0x0153; break; /* oe */
6373 case 0xbe: c = 0x0178; break; /* Y */
6374 }
6375 d += utf_char2bytes(c, d);
6376 }
6377 *d = NUL;
6378 if (lenp != NULL)
6379 *lenp = (int)(d - retval);
6380 break;
6381
Bram Moolenaar071d4272004-06-13 20:20:40 +00006382 case CONV_TO_LATIN1: /* utf-8 to latin1 conversion */
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006383 case CONV_TO_LATIN9: /* utf-8 to latin9 conversion */
Bram Moolenaar071d4272004-06-13 20:20:40 +00006384 retval = alloc(len + 1);
6385 if (retval == NULL)
6386 break;
6387 d = retval;
6388 for (i = 0; i < len; ++i)
6389 {
Bram Moolenaar24397332009-12-02 14:02:39 +00006390 l = utf_ptr2len_len(ptr + i, len - i);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006391 if (l == 0)
6392 *d++ = NUL;
6393 else if (l == 1)
6394 {
Bram Moolenaar24397332009-12-02 14:02:39 +00006395 int l_w = utf8len_tab_zero[ptr[i]];
6396
6397 if (l_w == 0)
6398 {
6399 /* Illegal utf-8 byte cannot be converted */
6400 vim_free(retval);
6401 return NULL;
6402 }
6403 if (unconvlenp != NULL && l_w > len - i)
Bram Moolenaar071d4272004-06-13 20:20:40 +00006404 {
6405 /* Incomplete sequence at the end. */
6406 *unconvlenp = len - i;
6407 break;
6408 }
6409 *d++ = ptr[i];
6410 }
6411 else
6412 {
6413 c = utf_ptr2char(ptr + i);
Bram Moolenaar3fdfa4a2004-10-07 21:02:47 +00006414 if (vcp->vc_type == CONV_TO_LATIN9)
6415 switch (c)
6416 {
6417 case 0x20ac: c = 0xa4; break; /* euro */
6418 case 0x0160: c = 0xa6; break; /* S hat */
6419 case 0x0161: c = 0xa8; break; /* S -hat */
6420 case 0x017d: c = 0xb4; break; /* Z hat */
6421 case 0x017e: c = 0xb8; break; /* Z -hat */
6422 case 0x0152: c = 0xbc; break; /* OE */
6423 case 0x0153: c = 0xbd; break; /* oe */
6424 case 0x0178: c = 0xbe; break; /* Y */
6425 case 0xa4:
6426 case 0xa6:
6427 case 0xa8:
6428 case 0xb4:
6429 case 0xb8:
6430 case 0xbc:
6431 case 0xbd:
6432 case 0xbe: c = 0x100; break; /* not in latin9 */
6433 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00006434 if (!utf_iscomposing(c)) /* skip composing chars */
6435 {
6436 if (c < 0x100)
6437 *d++ = c;
6438 else if (vcp->vc_fail)
6439 {
6440 vim_free(retval);
6441 return NULL;
6442 }
6443 else
6444 {
6445 *d++ = 0xbf;
6446 if (utf_char2cells(c) > 1)
6447 *d++ = '?';
6448 }
6449 }
6450 i += l - 1;
6451 }
6452 }
6453 *d = NUL;
6454 if (lenp != NULL)
6455 *lenp = (int)(d - retval);
6456 break;
6457
Bram Moolenaar56718732006-03-15 22:53:57 +00006458# ifdef MACOS_CONVERT
Bram Moolenaar071d4272004-06-13 20:20:40 +00006459 case CONV_MAC_LATIN1:
6460 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
Bram Moolenaarab79bcb2004-07-18 21:34:53 +00006461 'm', 'l', unconvlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006462 break;
6463
6464 case CONV_LATIN1_MAC:
6465 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
Bram Moolenaarab79bcb2004-07-18 21:34:53 +00006466 'l', 'm', unconvlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006467 break;
6468
6469 case CONV_MAC_UTF8:
6470 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
Bram Moolenaarab79bcb2004-07-18 21:34:53 +00006471 'm', 'u', unconvlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006472 break;
6473
6474 case CONV_UTF8_MAC:
6475 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
Bram Moolenaarab79bcb2004-07-18 21:34:53 +00006476 'u', 'm', unconvlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006477 break;
6478# endif
6479
6480# ifdef USE_ICONV
6481 case CONV_ICONV: /* conversion with output_conv.vc_fd */
Bram Moolenaar3a6eaa52009-06-16 13:23:06 +00006482 retval = iconv_string(vcp, ptr, len, unconvlenp, lenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006483 break;
6484# endif
6485# ifdef WIN3264
6486 case CONV_CODEPAGE: /* codepage -> codepage */
6487 {
6488 int retlen;
6489 int tmp_len;
6490 short_u *tmp;
6491
6492 /* 1. codepage/UTF-8 -> ucs-2. */
6493 if (vcp->vc_cpfrom == 0)
Bram Moolenaar36f692d2008-11-20 16:10:17 +00006494 tmp_len = utf8_to_utf16(ptr, len, NULL, NULL);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006495 else
Bram Moolenaarffeedec2013-02-13 16:49:58 +01006496 {
6497 tmp_len = MultiByteToWideChar(vcp->vc_cpfrom,
6498 unconvlenp ? MB_ERR_INVALID_CHARS : 0,
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +01006499 (char *)ptr, len, 0, 0);
Bram Moolenaarffeedec2013-02-13 16:49:58 +01006500 if (tmp_len == 0
6501 && GetLastError() == ERROR_NO_UNICODE_TRANSLATION)
6502 {
6503 if (lenp != NULL)
6504 *lenp = 0;
6505 if (unconvlenp != NULL)
6506 *unconvlenp = len;
6507 retval = alloc(1);
6508 if (retval)
6509 retval[0] = NUL;
6510 return retval;
6511 }
6512 }
Bram Moolenaar071d4272004-06-13 20:20:40 +00006513 tmp = (short_u *)alloc(sizeof(short_u) * tmp_len);
6514 if (tmp == NULL)
6515 break;
6516 if (vcp->vc_cpfrom == 0)
Bram Moolenaar36f692d2008-11-20 16:10:17 +00006517 utf8_to_utf16(ptr, len, tmp, unconvlenp);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006518 else
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +01006519 MultiByteToWideChar(vcp->vc_cpfrom, 0,
6520 (char *)ptr, len, tmp, tmp_len);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006521
6522 /* 2. ucs-2 -> codepage/UTF-8. */
6523 if (vcp->vc_cpto == 0)
Bram Moolenaar36f692d2008-11-20 16:10:17 +00006524 retlen = utf16_to_utf8(tmp, tmp_len, NULL);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006525 else
6526 retlen = WideCharToMultiByte(vcp->vc_cpto, 0,
6527 tmp, tmp_len, 0, 0, 0, 0);
6528 retval = alloc(retlen + 1);
6529 if (retval != NULL)
6530 {
6531 if (vcp->vc_cpto == 0)
Bram Moolenaar36f692d2008-11-20 16:10:17 +00006532 utf16_to_utf8(tmp, tmp_len, retval);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006533 else
6534 WideCharToMultiByte(vcp->vc_cpto, 0,
Bram Moolenaar6aa2cd42016-02-16 15:06:59 +01006535 tmp, tmp_len,
6536 (char *)retval, retlen, 0, 0);
Bram Moolenaar071d4272004-06-13 20:20:40 +00006537 retval[retlen] = NUL;
6538 if (lenp != NULL)
6539 *lenp = retlen;
6540 }
6541 vim_free(tmp);
6542 break;
6543 }
6544# endif
6545 }
6546
6547 return retval;
6548}
6549#endif