1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#include "basiccurl.h"
#include <iostream>
CURL_LOAD_DATA* grab_http_response(const char* url)
{
CURL_LOAD_DATA* data;
CURL* curl = curl_easy_init();
if(curl)
{
data = do_grab(curl, url);
curl_easy_cleanup(curl);
return data;
}
return NULL;
}
CURL_LOAD_DATA* do_grab(CURL* curl,const char* url)
{
CURL_LOAD_DATA* data = (CURL_LOAD_DATA*)malloc(sizeof(CURL_LOAD_DATA));
data->data = NULL;
data->nbytes = 0;
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, response_callback);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, data);
CURLcode res = curl_easy_perform(curl);
if (res !=0) {
std::clog << "error grabbing data\n";
}
return data;
}
size_t response_callback(void* ptr, size_t size, size_t nmemb, void* d)
{
size_t rsize = size * nmemb;
CURL_LOAD_DATA* data = (CURL_LOAD_DATA*)d;
// fprintf(stderr,"rsize is %d\n", rsize);
data->data = (char*)realloc(data->data, (data->nbytes + rsize) * sizeof(char));
memcpy(&(data->data[data->nbytes]), ptr, rsize);
data->nbytes += rsize;
// fprintf(stderr,"data->nbytes is %d\n", data->nbytes);
return rsize;
}
|
