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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 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; } }
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),
May 31, 2017 libcurl 7.60.0