Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
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#include "fmt.h"
#include "textcode.h"
#include "str.h"
#include "haveinline.h"
static inline int issafe(unsigned char c) {
const char safe[] = "$/.=~-_";
return ((c>='A' && c<='Z') ||
(c>='a' && c<='z') ||
(c>='0' && c<='9') ||
safe[str_chr(safe,c)]);
}
size_t fmt_urlencoded2(char* dest,const char* src,size_t len,const char* escapeme) {
register const unsigned char* s=(const unsigned char*) src;
size_t written=0,i;
for (i=0; i<len; ++i) {
if (!issafe(s[i]) || escapeme[str_chr(escapeme,s[i])]==s[i]) {
if (dest) {
dest[written]='%';
dest[written+1]=fmt_tohex(s[i]>>4);
dest[written+2]=fmt_tohex(s[i]&15);
}
written+=3;
} else {
if (dest) dest[written]=s[i];
++written;
}
/* in case someone gives us malicious input */
if (written>((size_t)-1)/2) return (size_t)-1;
}
return written;
}
size_t fmt_urlencoded(char* dest,const char* src,size_t len) {
return fmt_urlencoded2(dest,src,len,"");
}