quickjs-tart

quickjs-based runtime for wallet-core logic
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url2file.c (2487B)

      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
      9  *
     10  * This software is licensed as described in the file COPYING, which
     11  * you should have received as part of this distribution. The terms
     12  * are also available at https://curl.se/docs/copyright.html.
     13  *
     14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
     15  * copies of the Software, and permit persons to whom the Software is
     16  * furnished to do so, under the terms of the COPYING file.
     17  *
     18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
     19  * KIND, either express or implied.
     20  *
     21  * SPDX-License-Identifier: curl
     22  *
     23  ***************************************************************************/
     24 /* <DESC>
     25  * Download a given URL into a local file named page.out.
     26  * </DESC>
     27  */
     28 #include <stdio.h>
     29 #include <stdlib.h>
     30 
     31 #include <curl/curl.h>
     32 
     33 static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream)
     34 {
     35   size_t written = fwrite(ptr, size, nmemb, (FILE *)stream);
     36   return written;
     37 }
     38 
     39 int main(int argc, char *argv[])
     40 {
     41   CURL *curl_handle;
     42   static const char *pagefilename = "page.out";
     43   FILE *pagefile;
     44 
     45   if(argc < 2) {
     46     printf("Usage: %s <URL>\n", argv[0]);
     47     return 1;
     48   }
     49 
     50   curl_global_init(CURL_GLOBAL_ALL);
     51 
     52   /* init the curl session */
     53   curl_handle = curl_easy_init();
     54 
     55   /* set URL to get here */
     56   curl_easy_setopt(curl_handle, CURLOPT_URL, argv[1]);
     57 
     58   /* Switch on full protocol/debug output while testing */
     59   curl_easy_setopt(curl_handle, CURLOPT_VERBOSE, 1L);
     60 
     61   /* disable progress meter, set to 0L to enable it */
     62   curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1L);
     63 
     64   /* send all data to this function  */
     65   curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data);
     66 
     67   /* open the file */
     68   pagefile = fopen(pagefilename, "wb");
     69   if(pagefile) {
     70 
     71     /* write the page body to this file handle */
     72     curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, pagefile);
     73 
     74     /* get it! */
     75     curl_easy_perform(curl_handle);
     76 
     77     /* close the header file */
     78     fclose(pagefile);
     79   }
     80 
     81   /* cleanup curl stuff */
     82   curl_easy_cleanup(curl_handle);
     83 
     84   curl_global_cleanup();
     85 
     86   return 0;
     87 }