Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

42 lines
1.0 KiB

#include "textcode.h"
size_t scan_uuencoded(const char *src,char *dest,size_t *destlen) {
size_t len;
size_t tmp;
register const unsigned char* s=(const unsigned char*) src;
size_t i=0;
if ((len=*s-' ')>64) return 0;
len&=63;
++s;
while (len>0) {
if (s[0]-' '>64 || s[1]-' '>64 || s[2]-' '>64 || s[3]-' '>64) return 0;
tmp=(((s[0]-' ')&077) << (3*6)) +
(((s[1]-' ')&077) << (2*6)) +
(((s[2]-' ')&077) << (1*6)) +
(((s[3]-' ')&077));
s+=4;
if (len) { if (dest) dest[i++]=tmp>>16; --len; }
if (len) { if (dest) dest[i++]=tmp>>8; --len; }
if (len) { if (dest) dest[i++]=tmp&0xff; --len; }
}
if (destlen) *destlen=i;
return (const char*)s-src;
}
#ifdef UNITTEST
#include <assert.h>
#include <stdio.h>
#include <string.h>
int main() {
char buf[100];
size_t i;
memset(buf,0,100);
assert(scan_uuencoded("&9FYO<F0*",buf,&i)==9 && i==6 && !memcmp(buf,"fnord\n",7));
memset(buf,0,100);
assert(scan_uuencoded("%9FYO<F0`",buf,&i)==9 && i==5 && !memcmp(buf,"fnord",6));
return 0;
}
#endif