grive2/libgrive/src/http/CurlAgent.hh

91 lines
2.3 KiB
C++

/*
grive: an GPL program to sync a local directory with Google Drive
Copyright (C) 2012 Wan Wai Ho
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation version 2
of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#pragma once
#include "Agent.hh"
#include <memory>
#include <string>
// dependent libraries
#include <curl/curl.h>
namespace gr {
class DataStream ;
namespace http {
/*! \brief agent to provide HTTP access
This class provides functions to send HTTP request in many methods (e.g. get, post and put).
Normally the HTTP response is returned in a Receivable.
*/
class CurlAgent : public Agent
{
public :
CurlAgent() ;
~CurlAgent() ;
ResponseLog* GetLog() const ;
void SetLog( ResponseLog *log ) ;
void SetProgressBar( ProgressBar *progressbar ) ;
long Request(
const std::string& method,
const std::string& url,
SeekStream *in,
DataStream *dest,
const Header& hdr,
const long downloadFileBytes = 0 ) ;
std::string LastError() const ;
std::string LastErrorHeaders() const ;
std::string RedirLocation() const ;
std::string Escape( const std::string& str ) ;
std::string Unescape( const std::string& str ) ;
static int progress_callback( void *ptr, curl_off_t TotalDownloadSize, curl_off_t finishedDownloadSize, curl_off_t TotalToUpload, curl_off_t NowUploaded );
private :
static std::size_t HeaderCallback( void *ptr, size_t size, size_t nmemb, CurlAgent *pthis ) ;
static std::size_t Receive( void* ptr, size_t size, size_t nmemb, CurlAgent *pthis ) ;
long ExecCurl(
const std::string& url,
DataStream *dest,
const Header& hdr ) ;
void Init() ;
private :
struct Impl ;
std::unique_ptr<Impl> m_pimpl ;
std::unique_ptr<ResponseLog> m_log ;
std::unique_ptr<ProgressBar> m_pb ;
long totalDownloadSize;
long downloadedBytes;
} ;
} } // end of namespace