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CURLOPT_CHUNK_DATA(3)	   curl_easy_setopt options	 CURLOPT_CHUNK_DATA(3)

NAME
       CURLOPT_CHUNK_DATA - custom pointer to the FTP chunk callbacks

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	  CUR-
       LOPT_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;
	   }
	 }

	 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	7.54.1			 May 31, 2017		 CURLOPT_CHUNK_DATA(3)

NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO

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