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gerrit.omnirom.org / android_external_libncurses / c1bcd6dd9af6865867a3d6716e4c1a45021a90e5 / . / ncurses / base / lib_insch.c
blob: 9166ea5240e7f3adf62c9631bca98ffd50847dfa [file] [log] [blame]
Amit Daniel Kachhape6a01f52011-07-20 11:45:59 +0530[diff] [blame]1/****************************************************************************
2 * Copyright (c) 1998-2005,2008 Free Software Foundation, Inc. *
3 * *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
22 * *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
26 * authorization. *
27 ****************************************************************************/
28
29/****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Sven Verdoolaege *
33 * and: Thomas E. Dickey *
34 ****************************************************************************/
35
36/*
37** lib_insch.c
38**
39** The routine winsch().
40**
41*/
42
43#include <curses.priv.h>
44#include <ctype.h>
45
46MODULE_ID("$Id: lib_insch.c,v 1.25 2008/02/03 00:14:37 tom Exp $")
47
48/*
49 * Insert the given character, updating the current location to simplify
50 * inserting a string.
51 */
52NCURSES_EXPORT(int)
53_nc_insert_ch(WINDOW *win, chtype ch)
54{
55 int code = OK;
56 NCURSES_CH_T wch;
57 int count;
58 NCURSES_CONST char *s;
59
60 switch (ch) {
61 case '\t':
62 for (count = (TABSIZE - (win->_curx % TABSIZE)); count > 0; count--) {
63 if ((code = _nc_insert_ch(win, ' ')) != OK)
64 break;
65 }
66 break;
67 case '\n':
68 case '\r':
69 case '\b':
70 SetChar2(wch, ch);
71 _nc_waddch_nosync(win, wch);
72 break;
73 default:
74 if (
75#if USE_WIDEC_SUPPORT
76 WINDOW_EXT(win, addch_used) == 0 &&
77#endif
78 is8bits(ChCharOf(ch)) &&
79 isprint(ChCharOf(ch))) {
80 if (win->_curx <= win->_maxx) {
81 struct ldat *line = &(win->_line[win->_cury]);
82 NCURSES_CH_T *end = &(line->text[win->_curx]);
83 NCURSES_CH_T *temp1 = &(line->text[win->_maxx]);
84 NCURSES_CH_T *temp2 = temp1 - 1;
85
86 SetChar2(wch, ch);
87
88 CHANGED_TO_EOL(line, win->_curx, win->_maxx);
89 while (temp1 > end)
90 *temp1-- = *temp2--;
91
92 *temp1 = _nc_render(win, wch);
93 win->_curx++;
94 }
95 } else if (is8bits(ChCharOf(ch)) && iscntrl(ChCharOf(ch))) {
96 s = unctrl(ChCharOf(ch));
97 while (*s != '\0') {
98 code = _nc_insert_ch(win, ChAttrOf(ch) | UChar(*s));
99 if (code != OK)
100 break;
101 ++s;
102 }
103 }
104#if USE_WIDEC_SUPPORT
105 else {
106 /*
107 * Handle multibyte characters here
108 */
109 SetChar2(wch, ch);
110 wch = _nc_render(win, wch);
111 count = _nc_build_wch(win, &wch);
112 if (count > 0) {
113 code = wins_wch(win, &wch);
114 } else if (count == -1) {
115 /* handle EILSEQ */
116 if (is8bits(ch)) {
117 s = unctrl(ChCharOf(ch));
118 while (*s != '\0') {
119 code = _nc_insert_ch(win, ChAttrOf(ch) | UChar(*s));
120 if (code != OK)
121 break;
122 ++s;
123 }
124 } else {
125 code = ERR;
126 }
127 }
128 }
129#endif
130 break;
131 }
132 return code;
133}
134
135NCURSES_EXPORT(int)
136winsch(WINDOW *win, chtype c)
137{
138 NCURSES_SIZE_T oy;
139 NCURSES_SIZE_T ox;
140 int code = ERR;
141
142 T((T_CALLED("winsch(%p, %s)"), win, _tracechtype(c)));
143
144 if (win != 0) {
145 oy = win->_cury;
146 ox = win->_curx;
147
148 code = _nc_insert_ch(win, c);
149
150 win->_curx = ox;
151 win->_cury = oy;
152 _nc_synchook(win);
153 }
154 returnCode(code);
155}