CURLOPT_FNMATCH_FUNCTION (3) - Linux Manuals
CURLOPT_FNMATCH_FUNCTION: wildcard matching function callback
NAME
CURLOPT_FNMATCH_FUNCTION - wildcard matching function callbackSYNOPSIS
#include <curl/curl.h> int fnmatch_callback(void *ptr, const char *pattern, const char *string); CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FNMATCH_FUNCTION, fnmatch_callback);
DESCRIPTION
Pass a pointer to your callback function, which should match the prototype shown above.This callback s used for wildcard matching.
Return CURL_FNMATCHFUNC_MATCH if pattern matches the string, CURL_FNMATCHFUNC_NOMATCH if not or CURL_FNMATCHFUNC_FAIL if an error occurred.