1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: curl_unescape 5Section: 3 6Source: libcurl 7See-also: 8 - RFC 2396 9 - curl_easy_escape (3) 10 - curl_easy_unescape (3) 11 - curl_free (3) 12Protocol: 13 - All 14--- 15 16# NAME 17 18curl_unescape - URL decodes the given string 19 20# SYNOPSIS 21 22~~~c 23#include <curl/curl.h> 24 25char *curl_unescape(const char *input, int length); 26~~~ 27 28# DESCRIPTION 29 30Obsolete function. Use curl_easy_unescape(3) instead. 31 32This function converts the URL encoded string **input** to a "plain string" 33and return that as a new allocated string. All input characters that are URL 34encoded (%XX where XX is a two-digit hexadecimal number) are converted to 35their plain text versions. 36 37If the **length** argument is set to 0, curl_unescape(3) calls 38strlen() on **input** to find out the size. 39 40You must curl_free(3) the returned string when you are done with it. 41 42# EXAMPLE 43 44~~~c 45int main(void) 46{ 47 CURL *curl = curl_easy_init(); 48 if(curl) { 49 char *decoded = curl_unescape("%63%75%72%6c", 12); 50 if(decoded) { 51 /* do not assume printf() works on the decoded data */ 52 printf("Decoded: "); 53 /* ... */ 54 curl_free(decoded); 55 } 56 } 57} 58~~~ 59 60# AVAILABILITY 61 62Since 7.15.4, curl_easy_unescape(3) should be used. This function might 63be removed in a future release. 64 65# RETURN VALUE 66 67A pointer to a null-terminated string or NULL if it failed. 68
