Manpages - curl_escape.3

curl_escape - URL encodes the given string

#include <curl/curl.h>

char *curl_escape( const char **/url/, int length );*

Obsolete function. Use curl_easy_escape(3) instead!

This function will convert the given input string to an URL encoded string and return that as a new allocated string. All input characters that are not a-z, A-Z or 0-9 will be converted to their “URL escaped” version (%NN where NN is a two-digit hexadecimal number).

If the lengthf argument is set to 0, curl_escape() will use strlen() on the input url string to find out the size.

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

  char *output = curl_escape("data to convert", 15);
  if(output) {
    printf("Encoded: %s\n", output);
    curl_free(output);
  }

Since 7.15.4, curl_easy_escape(3) should be used. This function will be removed in a future release.

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

*curl_unescape*(3), *curl_free*(3), *RFC*2396