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gerrit.omnirom.org / android_external_libncurses / c1bcd6dd9af6865867a3d6716e4c1a45021a90e5 / . / ncurses / base / lib_instr.c
blob: 3fb29490ad0638f1025a6271ac22c516122cdef0 [file] [log] [blame]
Amit Daniel Kachhape6a01f52011-07-20 11:45:59 +0530[diff] [blame]1/****************************************************************************
2 * Copyright (c) 1998-2005,2007 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: Thomas E. Dickey 1996-on *
33 ****************************************************************************/
34
35/*
36** lib_instr.c
37**
38** The routine winnstr().
39**
40*/
41
42#include <curses.priv.h>
43
44MODULE_ID("$Id: lib_instr.c,v 1.16 2007/07/21 20:18:10 tom Exp $")
45
46NCURSES_EXPORT(int)
47winnstr(WINDOW *win, char *str, int n)
48{
49 int i = 0, row, col;
50
51 T((T_CALLED("winnstr(%p,%p,%d)"), win, str, n));
52
53 if (!str)
54 returnCode(0);
55
56 if (win) {
57 getyx(win, row, col);
58
59 if (n < 0)
60 n = win->_maxx - win->_curx + 1;
61
62 for (; i < n;) {
63#if USE_WIDEC_SUPPORT
64 cchar_t *cell = &(win->_line[row].text[col]);
65 wchar_t *wch;
66 attr_t attrs;
67 short pair;
68 int n2;
69 bool done = FALSE;
70 mbstate_t state;
71 size_t i3, n3;
72 char *tmp;
73
74 if (!isWidecExt(*cell)) {
75 n2 = getcchar(cell, 0, 0, 0, 0);
76 if (n2 > 0
77 && (wch = typeCalloc(wchar_t, (unsigned) n2 + 1)) != 0) {
78 if (getcchar(cell, wch, &attrs, &pair, 0) == OK) {
79
80 init_mb(state);
81 n3 = wcstombs(0, wch, 0);
82 if (isEILSEQ(n3) || (n3 == 0)) {
83 ;
84 } else if ((int) (n3 + i) > n) {
85 done = TRUE;
86 } else if ((tmp = typeCalloc(char, n3 + 10)) == 0) {
87 done = TRUE;
88 } else {
89 init_mb(state);
90 wcstombs(tmp, wch, n3);
91 for (i3 = 0; i3 < n3; ++i3)
92 str[i++] = tmp[i3];
93 free(tmp);
94 }
95 }
96 free(wch);
97 if (done)
98 break;
99 }
100 }
101#else
102 str[i++] = (char) CharOf(win->_line[row].text[col]);
103#endif
104 if (++col > win->_maxx) {
105 break;
106 }
107 }
108 }
109 str[i] = '\0'; /* SVr4 does not seem to count the null */
110 T(("winnstr returns %s", _nc_visbuf(str)));
111 returnCode(i);
112}