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"
21 #include "i18n.h"
23 #include <assert.h>
24 #include <string.h>
25 #include <glib.h>
27 extern void screen_status_printf(const char *format, ...);
29 static bool noconvert = true;
31 void
32 charset_init(bool disable)
33 {
34 noconvert = disable;
35 }
37 unsigned
38 utf8_width(const char *str)
39 {
40 assert(str != NULL);
42 if (g_utf8_validate(str, -1, NULL)) {
43 size_t len = g_utf8_strlen(str, -1);
44 unsigned width = 0;
45 gunichar c;
47 while (len--) {
48 c = g_utf8_get_char(str);
49 width += g_unichar_iswide(c) ? 2 : 1;
50 str += g_unichar_to_utf8(c, NULL);
51 }
53 return width;
54 } else
55 return strlen(str);
56 }
58 char *
59 utf8_to_locale(const char *utf8str)
60 {
61 gchar *str;
62 gsize rb, wb;
63 GError *error;
65 assert(utf8str != NULL);
67 if (noconvert)
68 return g_strdup(utf8str);
70 rb = 0; /* bytes read */
71 wb = 0; /* bytes written */
72 error = NULL;
73 str = g_locale_from_utf8(utf8str,
74 strlen(utf8str),
75 &wb, &rb,
76 &error);
77 if (error) {
78 const char *charset;
80 g_get_charset(&charset);
81 screen_status_printf(_("Error: Unable to convert characters to %s"),
82 charset);
83 g_error_free(error);
84 return g_strdup(utf8str);
85 }
87 return str;
88 }
90 char *
91 locale_to_utf8(const char *localestr)
92 {
93 gchar *str;
94 gsize rb, wb;
95 GError *error;
97 assert(localestr != NULL);
99 if (noconvert)
100 return g_strdup(localestr);
102 rb = 0; /* bytes read */
103 wb = 0; /* bytes written */
104 error = NULL;
105 str = g_locale_to_utf8(localestr,
106 strlen(localestr),
107 &wb, &rb,
108 &error);
109 if (error) {
110 screen_status_printf(_("Error: Unable to convert characters to UTF-8"));
111 g_error_free(error);
112 return g_strdup(localestr);
113 }
115 return str;
116 }