CURLOPT_FNMATCH_DATA explained

Name

CURLOPT_FNMATCH_DATA - pointer passed to the fnmatch callback

Synopsis

#include <curl/curl.h>
 
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FNMATCH_DATA,
                          void *pointer);

Description

Pass a pointer that is untouched by libcurl and passed as the ptr argument to the CURLOPT_FNMATCH_FUNCTION.

Default

NULL

Protocols

This functionality affects ftp only

Example

extern int string_match(const char *s1, const char *s2);
 
struct local_stuff {
  void *custom;
};
 
static int my_fnmatch(void *clientp,
                      const char *pattern, const char *string)
{
  struct local_stuff *my = clientp;
  printf("my ptr: %p\n", my->custom);
 
  if(string_match(pattern, string))
    return CURL_FNMATCHFUNC_MATCH;
  else
    return CURL_FNMATCHFUNC_NOMATCH;
}
 
int main(void)
{
  struct local_stuff local_data;
  CURL *curl = curl_easy_init();
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "ftp://ftp.example.com/file*");
    curl_easy_setopt(curl, CURLOPT_WILDCARDMATCH, 1L);
    curl_easy_setopt(curl, CURLOPT_FNMATCH_FUNCTION, my_fnmatch);
    curl_easy_setopt(curl, CURLOPT_FNMATCH_DATA, &local_data);
 
    curl_easy_perform(curl);
  }
}

Availability

Added in curl 7.21.0

Return value

curl_easy_setopt returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors.