You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
931 B
C
40 lines
931 B
C
#include "fmt.h"
|
|
#include "textcode.h"
|
|
#include "haveinline.h"
|
|
|
|
static inline unsigned int enc(unsigned char x) {
|
|
return ((x-1)&077)+'!';
|
|
}
|
|
|
|
size_t fmt_uuencoded(char* dest,const char* src,size_t len) {
|
|
size_t i;
|
|
register const unsigned char* s=(const unsigned char*) src;
|
|
const char* orig=dest;
|
|
size_t tmp;
|
|
if (!dest) return len>((size_t)-1)/2?(size_t)-1:(len+2)/3*4;
|
|
while (len) {
|
|
{
|
|
register unsigned int diff;
|
|
if (len>45) { i=15; diff=45; } else { i=(len+2)/3; diff=len; }
|
|
if (orig) *dest=enc(diff);
|
|
++dest;
|
|
len-=diff;
|
|
}
|
|
for (; i; --i) {
|
|
tmp=((unsigned long)s[0] << 16) +
|
|
((unsigned long)s[1] << 8) +
|
|
((unsigned long)s[2]);
|
|
if (orig) {
|
|
dest[0]=enc((tmp>>(3*6))&077);
|
|
dest[1]=enc((tmp>>(2*6))&077);
|
|
dest[2]=enc((tmp>>(1*6))&077);
|
|
dest[3]=enc(tmp&077);
|
|
}
|
|
dest+=4; s+=3;
|
|
}
|
|
if (orig) *dest='\n';
|
|
++dest;
|
|
}
|
|
return dest-orig;
|
|
}
|