cURL libcurl API curl_easy_escape
curl_easy_escape.3 -- man page
char *curl_easy_escape( CURL * curl , char * url , int length );
This function converts the given input string to an URL encoded string and returns that as a new allocated string. All input characters that are not a-z, A-Z, 0-9, '-', '.', '_' or '~' are converted to their "URL escaped" version (%NN where NN is a two-digit hexadecimal number).
If the length argument is set to 0 (zero), curl_easy_escape uses strlen() on the input url to find out the size.
You must curl_free the returned string when you're done with it.
Added in 7.15.4 and replaces the old curl_escape function.
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