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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(" DIR\n"); break; case CURLFILETYPE_FILE: printf("FILE "); break; default: printf("OTHER\n"); break; } if(finfo->filetype == CURLFILETYPE_FILE) { /* do not transfer files >= 50B */ if(finfo->size > 50) { printf("SKIPPED\n"); 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 7.65.1 November 7, 2018 CURLOPT_CHUNK_DATA(3)

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