mirror of https://github.com/SuperBFG7/ympd
41 lines
929 B
C
41 lines
929 B
C
/*
|
|
from http://www.geekhideout.com/urlcode.shtml
|
|
public domain
|
|
*/
|
|
|
|
#include <ctype.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
/* Converts a hex character to its integer value */
|
|
char from_hex(char ch) {
|
|
return isdigit(ch) ? ch - '0' : tolower(ch) - 'a' + 10;
|
|
}
|
|
|
|
/* Converts an integer value to its hex character*/
|
|
char to_hex(char code) {
|
|
static char hex[] = "0123456789abcdef";
|
|
return hex[code & 15];
|
|
}
|
|
|
|
/* Returns a url-decoded version of str */
|
|
/* IMPORTANT: be sure to free() the returned string after use */
|
|
char *url_decode(char *str) {
|
|
char *pstr = str, *buf = malloc(strlen(str) + 1), *pbuf = buf;
|
|
while (*pstr) {
|
|
if (*pstr == '%') {
|
|
if (pstr[1] && pstr[2]) {
|
|
*pbuf++ = from_hex(pstr[1]) << 4 | from_hex(pstr[2]);
|
|
pstr += 2;
|
|
}
|
|
} else if (*pstr == '+') {
|
|
*pbuf++ = ' ';
|
|
} else {
|
|
*pbuf++ = *pstr;
|
|
}
|
|
pstr++;
|
|
}
|
|
*pbuf = '\0';
|
|
return buf;
|
|
}
|