111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/*****************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License
|
|
* Version 1.0 (the "License"); you may not use this file except in
|
|
* compliance with the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS"
|
|
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing rights and limitations
|
|
* under the License.
|
|
*
|
|
* The Original Code is Curl.
|
|
*
|
|
* The Initial Developer of the Original Code is Daniel Stenberg.
|
|
*
|
|
* Portions created by the Initial Developer are Copyright (C) 1998.
|
|
* All Rights Reserved.
|
|
*
|
|
* ------------------------------------------------------------
|
|
* Main author:
|
|
* - Daniel Stenberg <Daniel.Stenberg@haxx.nu>
|
|
*
|
|
* http://curl.haxx.nu
|
|
*
|
|
* $Source$
|
|
* $Revision$
|
|
* $Date$
|
|
* $Author$
|
|
* $State$
|
|
* $Locker$
|
|
*
|
|
* ------------------------------------------------------------
|
|
****************************************************************************/
|
|
|
|
/* Escape and unescape URL encoding in strings. The functions return a new
|
|
* allocated string or NULL if an error occurred. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
char *curl_escape(char *string)
|
|
{
|
|
int alloc=strlen(string)+1;
|
|
char *ns = malloc(alloc);
|
|
unsigned char in;
|
|
int newlen = alloc;
|
|
int index=0;
|
|
|
|
while(*string) {
|
|
in = *string;
|
|
if(' ' == in)
|
|
ns[index++] = '+';
|
|
else if(!(in >= 'a' && in <= 'z') &&
|
|
!(in >= 'A' && in <= 'Z') &&
|
|
!(in >= '0' && in <= '9')) {
|
|
/* encode it */
|
|
newlen += 2; /* the size grows with two, since this'll become a %XX */
|
|
if(newlen > alloc) {
|
|
alloc *= 2;
|
|
ns = realloc(ns, alloc);
|
|
if(!ns)
|
|
return NULL;
|
|
}
|
|
sprintf(&ns[index], "%%%02X", in);
|
|
index+=3;
|
|
}
|
|
else {
|
|
/* just copy this */
|
|
ns[index++]=in;
|
|
}
|
|
string++;
|
|
}
|
|
ns[index]=0; /* terminate it */
|
|
return ns;
|
|
}
|
|
|
|
char *curl_unescape(char *string, int length)
|
|
{
|
|
int alloc = (length?length:strlen(string))+1;
|
|
char *ns = malloc(alloc);
|
|
unsigned char in;
|
|
int index=0;
|
|
int hex;
|
|
|
|
while(--alloc) {
|
|
in = *string;
|
|
if('+' == in)
|
|
in = ' ';
|
|
else if('%' == in) {
|
|
/* encoded part */
|
|
if(sscanf(string+1, "%02X", &hex)) {
|
|
in = hex;
|
|
string+=2;
|
|
}
|
|
}
|
|
|
|
ns[index++] = in;
|
|
string++;
|
|
}
|
|
ns[index]=0; /* terminate it */
|
|
return ns;
|
|
|
|
}
|