CURLOPT_CHUNK_DATA(3)

CURLOPT_CHUNK_DATA(3)curl_easy_setopt optionCURLOPT_CHUNK_DATA(3)

NAME

     CURLOPT_CHUNK_DATA - custom pointer to the FTP  chunk  call-
     backs

SYNOPSIS

     #include <curl/curl.h>

     CURLcode curl_easy_setopt(CURL *handle,  CURLOPT_CHUNK_DATA,
     void *pointer);

DESCRIPTION

     Pass a pointer that will be untouched by libcurl and  passed
     as the ptr argument to the CURLOPT_CHUNK_BGN_FUNCTION(3) and
     CURLOPT_CHUNK_END_FUNCTION(3).

DEFAULT

     NULL

PROTOCOLS

     FTP

EXAMPLE

     static long file_is_coming(struct curl_fileinfo *finfo,
                                struct callback_data *data,
                                int remains)
     {
       printf("%3d %40s %10luB ", remains, finfo->filename,
              (unsigned long)finfo->size);

       switch(finfo->filetype) {
       case CURLFILETYPE_DIRECTORY:
         printf(" DIR0);
         break;
       case CURLFILETYPE_FILE:
         printf("FILE ");
         break;
       default:
         printf("OTHER0);
         break;
       }

       if(finfo->filetype == CURLFILETYPE_FILE) {
         /* do not transfer files >= 50B */
         if(finfo->size > 50) {
           printf("SKIPPED0);
           return CURL_CHUNK_BGN_FUNC_SKIP;
         }

         data->output = fopen(finfo->filename, "wb");
         if(!data->output) {
           return CURL_CHUNK_BGN_FUNC_FAIL;
         }

libcurl 7.58.0      Last change: May 31, 2017                   1

CURLOPT_CHUNK_DATA(3)curl_easy_setopt optionCURLOPT_CHUNK_DATA(3)

       }

       return CURL_CHUNK_BGN_FUNC_OK;
     }

     int main()
     {
       /* data for callback */
       struct callback_data callback_info;

       /* callback is called before download of concrete file started */
       curl_easy_setopt(curl, CURLOPT_CHUNK_BGN_FUNCTION, file_is_coming);
       curl_easy_setopt(curl, CURLOPT_CHUNK_DATA, &callback_info);
     }

AVAILABILITY

     Added in 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_WILDCARDMATCH(3),

libcurl 7.58.0      Last change: May 31, 2017                   2