1 /*
2 * (c) 2006 by Kalle Wallin <kaw@linux.se>
3 * Copyright (C) 2008 Max Kellermann <max@duempel.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 */
20 #include "charset.h"
22 #include <assert.h>
23 #include <string.h>
24 #include <glib.h>
26 static bool noconvert = true;
27 static const char *charset;
29 const char *
30 charset_init(void)
31 {
32 noconvert = g_get_charset(&charset);
33 return charset;
34 }
36 unsigned
37 utf8_width(const char *str)
38 {
39 assert(str != NULL);
41 if (g_utf8_validate(str, -1, NULL)) {
42 size_t len = g_utf8_strlen(str, -1);
43 unsigned width = 0;
44 gunichar c;
46 while (len--) {
47 c = g_utf8_get_char(str);
48 width += g_unichar_iswide(c) ? 2 : 1;
49 str += g_unichar_to_utf8(c, NULL);
50 }
52 return width;
53 } else
54 return strlen(str);
55 }
57 char *
58 utf8_to_locale(const char *utf8str)
59 {
60 gchar *str;
61 GError *error;
63 assert(utf8str != NULL);
65 if (noconvert)
66 return g_strdup(utf8str);
68 str = g_convert_with_fallback(utf8str, strlen(utf8str),
69 charset, "utf-8",
70 NULL, NULL, NULL,
71 &error);
72 if (str == NULL) {
73 g_error_free(error);
74 return g_strdup(utf8str);
75 }
77 return str;
78 }
80 char *
81 locale_to_utf8(const char *localestr)
82 {
83 gchar *str;
84 GError *error;
86 assert(localestr != NULL);
88 if (noconvert)
89 return g_strdup(localestr);
91 str = g_convert_with_fallback(localestr, strlen(localestr),
92 "utf-8", charset,
93 NULL, NULL, NULL,
94 &error);
95 if (str == NULL) {
96 g_error_free(error);
97 return g_strdup(localestr);
98 }
100 return str;
101 }