2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005 Richard Kettlewell
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.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
32 #include "configuration.h"
36 static void *convert(const char *from, const char *to,
37 const void *ptr, size_t n) {
40 char *buf = 0, *s, *d;
41 size_t bufsize = 0, sl, dl;
43 if((i = iconv_open(to, from)) == (iconv_t)-1)
44 fatal(errno, "error calling iconv_open");
46 bufsize = bufsize ? 2 * bufsize : 32;
47 buf = xrealloc_noptr(buf, bufsize);
53 /* (void *) to work around FreeBSD's nonstandard iconv prototype */
54 len = iconv(i, (void *)&s, &sl, &d, &dl);
55 } while(len == (size_t)-1 && errno == E2BIG);
57 if(len == (size_t)-1) {
58 error(errno, "error converting from %s to %s", from, to);
64 /* not everybody's iconv supports UCS-4, and it's inconvenient to have to know
65 * our endianness, and it's easy to convert it ourselves, so we do */
66 uint32_t *utf82ucs4(const char *mb) {
73 error(0, "invalid UTF-8 sequence"); return 0;);
74 dynstr_ucs4_append(&d, c);
76 dynstr_ucs4_terminate(&d);
80 char *ucs42utf8(const uint32_t *u) {
89 dynstr_append(&d, 0xC0 | (c >> 6));
90 dynstr_append(&d, 0x80 | (c & 0x3F));
91 } else if(c < 0x10000) {
92 dynstr_append(&d, 0xE0 | (c >> 12));
93 dynstr_append(&d, 0x80 | ((c >> 6) & 0x3F));
94 dynstr_append(&d, 0x80 | (c & 0x3F));
95 } else if(c < 0x110000) {
96 dynstr_append(&d, 0xF0 | (c >> 18));
97 dynstr_append(&d, 0x80 | ((c >> 12) & 0x3F));
98 dynstr_append(&d, 0x80 | ((c >> 6) & 0x3F));
99 dynstr_append(&d, 0x80 | (c & 0x3F));
101 error(0, "invalid UCS-4 character");
105 dynstr_terminate(&d);
109 char *mb2utf8(const char *mb) {
110 return convert(nl_langinfo(CODESET), "UTF-8", mb, strlen(mb) + 1);
113 char *utf82mb(const char *utf8) {
114 return convert("UTF-8", nl_langinfo(CODESET), utf8, strlen(utf8) + 1);
117 char *any2utf8(const char *from, const char *any) {
118 return convert(from, "UTF-8", any, strlen(any) + 1);
121 char *any2mb(const char *from, const char *any) {
122 if(from) return convert(from, nl_langinfo(CODESET), any, strlen(any) + 1);
123 else return xstrdup(any);
126 char *any2any(const char *from,
129 if(from || to) return convert(from, to, any, strlen(any) + 1);
130 else return xstrdup(any);
133 int ucs4cmp(const uint32_t *a, const uint32_t *b) {
134 while(*a && *b && *a == *b) ++a, ++b;
135 if(*a > *b) return 1;
136 else if(*a < *b) return -1;