/***************************************************************************** * * 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; }