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curl_easy_unescape(3)           libcurl Manual           curl_easy_unescape(3)

       curl_easy_unescape - URL decodes the given string

       #include <curl/curl.h>

       char *curl_easy_unescape( CURL *curl, char *url, int inlength , int *outlength );

       This  function converts the given URL encoded input string to a "plain string" and returns that in an allocated
       memory area. All input characters that are URL encoded (%XX where XX is a  two-digit  hexadecimal  number)  are
       converted to their binary versions.

       If  the  length argument is set to 0 (zero), curl_easy_unescape(3) will use strlen() on the input url string to
       find out the size.

       If outlength is non-NULL, the function will write the length of the returned string in the  integer  it  points
       to. This allows an escaped string containing %00 to still get used properly after unescaping.

       You must curl_free(3) the returned string when you're done with it.

       Added in 7.15.4 and replaces the old curl_unescape(3) function.

       A pointer to a zero terminated string or NULL if it failed.

       curl_easy_escape(3), curl_free(3), RFC 2396

libcurl 7.15.4                   7 April 2006            curl_easy_unescape(3)