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comparison src/libstrfunc.c @ 16:c508ee15dfca

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switch to automake/autoconf
author carl
date Sun, 19 Feb 2006 18:47:46 -0800
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children b88ceb81dba2
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15:ac98f448b6ab 16:c508ee15dfca
1
2 /* Taken from LibStrfunc v7.3 */
3
4 #include <stdio.h>
5 #include <ctype.h>
6 #include <stdlib.h>
7 #include "libstrfunc.h"
8
9 char *_sf_b64_buf=NULL;
10 size_t _sf_b64_len=0;
11
12
13 static unsigned char _sf_uc_ib[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/==";
14
15 char *
16 base64_encode(void *data, size_t size) {
17 char *output;
18 register char *ou;
19 register unsigned char *p=(unsigned char *)data;
20 #ifdef __LINUX__
21 register void * dte = ((char*)data + size);
22 #endif
23
24 #ifndef __LINUX__
25 register void * dte = (void*)((char*)data + size);
26 #endif
27 //register void *dte=data + size;
28 register int nc=0;
29
30 if(data == NULL)
31 return NULL;
32
33 ou=output=(char *)malloc(size / 3 * 4 + (size / 50) + 5);
34 if(!output)
35 return NULL;
36
37 while((char *)dte - (char *)p >= 3) {
38 *ou = _sf_uc_ib[ *p >> 2 ];
39 ou[1] = _sf_uc_ib[ ((*p & 0x03) << 4) | (p[1] >> 4) ];
40 ou[2] = _sf_uc_ib[ ((p[1] & 0x0F) << 2) | (p[2] >> 6) ];
41 ou[3] = _sf_uc_ib[ p[2] & 0x3F ];
42
43 p+=3;
44 ou+=4;
45
46 nc+=4;
47 if(!(nc % 76)) *ou++='\n';
48 };
49 if((char *)dte - (char *)p == 2) {
50 *ou++ = _sf_uc_ib[ *p >> 2 ];
51 *ou++ = _sf_uc_ib[ ((*p & 0x03) << 4) | (p[1] >> 4) ];
52 *ou++ = _sf_uc_ib[ ((p[1] & 0x0F) << 2) ];
53 *ou++ = '=';
54 } else if((char *)dte - (char *)p == 1) {
55 *ou++ = _sf_uc_ib[ *p >> 2 ];
56 *ou++ = _sf_uc_ib[ ((*p & 0x03) << 4) ];
57 *ou++ = '=';
58 *ou++ = '=';
59 };
60
61 *ou=0;
62
63 _sf_b64_len = (ou - output);
64
65 if(_sf_b64_buf)
66 free(_sf_b64_buf);
67 return _sf_b64_buf=output;
68 };
69