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curl/docs/examples/ftp-wildcard.c
Daniel Stenberg 3a6563d668 examples: adhere to curl code style
All plain C examples now (mostly) adhere to the curl code style. While
they are only examples, they had diverted so much and contained all
sorts of different mixed code styles by now. Having them use a unified
style helps users and readability. Also, as they get copy-and-pasted
widely by users, making sure they're clean and nice is a good idea.

573 checksrc warnings were addressed.
2016-02-11 09:44:45 +01:00

153 lines
4.2 KiB
C

/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
/* <DESC>
* FTP wildcard pattern matching
* </DESC>
*/
#include <curl/curl.h>
#include <stdio.h>
struct callback_data {
FILE *output;
};
static long file_is_coming(struct curl_fileinfo *finfo,
struct callback_data *data,
int remains);
static long file_is_downloaded(struct callback_data *data);
static size_t write_it(char *buff, size_t size, size_t nmemb,
void *cb_data);
int main(int argc, char **argv)
{
int rc = CURLE_OK;
/* curl easy handle */
CURL *handle;
/* help data */
struct callback_data data = { 0 };
/* global initialization */
rc = curl_global_init(CURL_GLOBAL_ALL);
if(rc)
return rc;
/* initialization of easy handle */
handle = curl_easy_init();
if(!handle) {
curl_global_cleanup();
return CURLE_OUT_OF_MEMORY;
}
/* turn on wildcard matching */
curl_easy_setopt(handle, CURLOPT_WILDCARDMATCH, 1L);
/* callback is called before download of concrete file started */
curl_easy_setopt(handle, CURLOPT_CHUNK_BGN_FUNCTION, file_is_coming);
/* callback is called after data from the file have been transferred */
curl_easy_setopt(handle, CURLOPT_CHUNK_END_FUNCTION, file_is_downloaded);
/* this callback will write contents into files */
curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, write_it);
/* put transfer data into callbacks */
curl_easy_setopt(handle, CURLOPT_CHUNK_DATA, &data);
curl_easy_setopt(handle, CURLOPT_WRITEDATA, &data);
/* curl_easy_setopt(handle, CURLOPT_VERBOSE, 1L); */
/* set an URL containing wildcard pattern (only in the last part) */
if(argc == 2)
curl_easy_setopt(handle, CURLOPT_URL, argv[1]);
else
curl_easy_setopt(handle, CURLOPT_URL, "ftp://example.com/test/*");
/* and start transfer! */
rc = curl_easy_perform(handle);
curl_easy_cleanup(handle);
curl_global_cleanup();
return rc;
}
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;
}
static long file_is_downloaded(struct callback_data *data)
{
if(data->output) {
printf("DOWNLOADED\n");
fclose(data->output);
data->output = 0x0;
}
return CURL_CHUNK_END_FUNC_OK;
}
static size_t write_it(char *buff, size_t size, size_t nmemb,
void *cb_data)
{
struct callback_data *data = cb_data;
size_t written = 0;
if(data->output)
written = fwrite(buff, size, nmemb, data->output);
else
/* listing output */
written = fwrite(buff, size, nmemb, stdout);
return written;
}