mirror of
https://github.com/moparisthebest/curl
synced 2024-12-22 08:08:50 -05:00
110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
/*****************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2002, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* In order to be useful for every potential user, curl and libcurl are
|
|
* dual-licensed under the MPL and the MIT/X-derivate licenses.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the MPL or the MIT/X-derivate
|
|
* licenses. You may pick one of these licenses.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
* $Id$
|
|
*****************************************************************************/
|
|
|
|
/* Escape and unescape URL encoding in strings. The functions return a new
|
|
* allocated string or NULL if an error occurred. */
|
|
|
|
#include "setup.h"
|
|
#include <ctype.h>
|
|
#include <curl/curl.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
/* The last #include file should be: */
|
|
#ifdef MALLOCDEBUG
|
|
#include "memdebug.h"
|
|
#endif
|
|
|
|
char *curl_escape(const char *string, int length)
|
|
{
|
|
int alloc = (length?length:(int)strlen(string))+1;
|
|
char *ns = malloc(alloc);
|
|
unsigned char in;
|
|
int newlen = alloc;
|
|
int index=0;
|
|
|
|
length = alloc-1;
|
|
while(length--) {
|
|
in = *string;
|
|
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(const char *string, int length)
|
|
{
|
|
int alloc = (length?length:(int)strlen(string))+1;
|
|
char *ns = malloc(alloc);
|
|
unsigned char in;
|
|
int index=0;
|
|
unsigned int hex;
|
|
|
|
while(--alloc > 0) {
|
|
in = *string;
|
|
if('%' == in) {
|
|
/* encoded part */
|
|
if(sscanf(string+1, "%02X", &hex)) {
|
|
in = hex;
|
|
string+=2;
|
|
alloc-=2;
|
|
}
|
|
}
|
|
|
|
ns[index++] = in;
|
|
string++;
|
|
}
|
|
ns[index]=0; /* terminate it */
|
|
return ns;
|
|
|
|
}
|
|
|
|
/*
|
|
* local variables:
|
|
* eval: (load-file "../curl-mode.el")
|
|
* end:
|
|
* vim600: fdm=marker
|
|
* vim: et sw=2 ts=2 sts=2 tw=78
|
|
*/
|