NAME

       CURLOPT_WILDCARDMATCH - directory wildcard transfers

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_WILDCARDMATCH, long onoff);

DESCRIPTION

       Set onoff to 1 if you want to transfer multiple files according to a filename pattern. The pattern can be
       specified as part of the CURLOPT_URL(3) option, using an fnmatch-like pattern (Shell Pattern Matching) in
       the last part of URL (filename).

       By default, libcurl uses its internal wildcard matching implementation. You can provide your own matching
       function by the CURLOPT_FNMATCH_FUNCTION(3) option.

       A brief introduction of its syntax follows:

       * - ASTERISK
              ftp://example.com/some/path/*.txt

              matches all .txt files in the root directory. Only two  asterisks  are  allowed  within  the  same
              pattern string.

       ? - QUESTION MARK
              Question mark matches any (exactly one) character.

              ftp://example.com/some/path/photo?.jpg

       [ - BRACKET EXPRESSION
              The  left  bracket  opens  a  bracket  expression.  The question mark and asterisk have no special
              meaning in a bracket expression. Each bracket expression ends by the  right  bracket  and  matches
              exactly one character. Some examples follow:

              [a-zA-Z0-9] or [f-gF-G] - character interval

              [abc] - character enumeration

              [^abc] or [!abc] - negation

              [[:name:]] class expression. Supported classes are alnum,lower, space, alpha, digit, print, upper,
              blank, graph, xdigit.

              [][-!^] - special case - matches only '-', ']', '[', '!' or '^'. These characters have no  special
              purpose.

              [[]] - escape syntax. Matches '[', ']' or 'e'.

              Using the rules above, a filename pattern can be constructed:

              ftp://example.com/some/path/[a-z[:upper:]\].jpg

PROTOCOLS

       This functionality affects ftp only

EXAMPLE

       extern long begin_cb(struct curl_fileinfo *, void *, int);
       extern long end_cb(void *ptr);

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           /* turn on wildcard matching */
           curl_easy_setopt(curl, CURLOPT_WILDCARDMATCH, 1L);

           /* callback is called before download of concrete file started */
           curl_easy_setopt(curl, CURLOPT_CHUNK_BGN_FUNCTION, begin_cb);

           /* callback is called after data from the file have been transferred */
           curl_easy_setopt(curl, CURLOPT_CHUNK_END_FUNCTION, end_cb);

           /* See more on https://curl.se/libcurl/c/ftp-wildcard.html */
         }
       }

AVAILABILITY

       Added in curl 7.21.0

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_CHUNK_BGN_FUNCTION(3), CURLOPT_CHUNK_END_FUNCTION(3), CURLOPT_FNMATCH_FUNCTION(3), CURLOPT_URL(3)