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comparison mcabber/utf8.c @ 0:b3b2332715fb

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Tailorization of /trunk Import of the upstream sources from Repository: file:///tmp/svn-mcabber Module: /trunk Revision: 15
author tailor@frmp8452
date Thu, 30 Jun 2005 21:39:31 +0000
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-1:000000000000 0:b3b2332715fb
1 #include <stdlib.h>
2 #include <string.h>
3
4 #include "utf8.h"
5
6
7 /* Desc: convert UTF8 -> ASCII
8 *
9 * In : UTF8 string
10 * Out : ASCII string
11 *
12 * Note: it is up to the caller to free the returned string
13 */
14 char *utf8_decode(const char *src)
15 {
16 char *ret = calloc(1, strlen(src) + 1);
17 char *aux = ret;
18
19 while (*src) {
20 unsigned char lead = *src++;
21 if ((lead & 0xe0) == 0xc0) {
22 unsigned char ch2 = *src++;
23 *aux = ((lead & 0x1f) << 6) | (ch2 & 0x3f);
24 } else {
25 *aux = lead;
26 }
27 aux++;
28 }
29
30 return ret;
31 }
32
33
34 /* Desc: convert ASCII -> UTF8
35 *
36 * In : ASCII string
37 * Out : UTF8 string
38 *
39 * Note: it is up to the caller to free the returned string
40 */
41 char *utf8_encode(const char *src)
42 {
43 char *ret = calloc(1, (strlen(src) * 2) + 1);
44 char *aux = ret;
45
46 while (*src) {
47 unsigned char ch = *src++;
48 if (ch < 0x80) {
49 *aux = ch;
50 } else { /* if (ch < 0x800) { */
51 *aux++ = 0xc0 | (ch >> 6 & 0x1f);
52 *aux = 0xc0 | (0x80 | (ch & 0x3f));
53 }
54 aux++;
55 }
56
57 return ret;
58 }