klayout/src/tl/tlHttpStream.h

138 lines
3.1 KiB
C++

/*
KLayout Layout Viewer
Copyright (C) 2006-2017 Matthias Koefferlein
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; either version 2 of the License, or
(at your option) any later version.
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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef HDR_tlHttpStream
#define HDR_tlHttpStream
#include "tlStream.h"
#include <QObject>
#include <QBuffer>
#include <QByteArray>
class QNetworkAccessManager;
class QNetworkReply;
class QNetworkProxy;
class QAuthenticator;
namespace tl
{
class TL_PUBLIC HttpErrorException
: public tl::Exception
{
public:
HttpErrorException (const std::string &f, int en, const std::string &url)
: tl::Exception (tl::to_string (QObject::tr ("Error %d: %s, fetching %s")), en, f, url)
{ }
};
/**
* @brief A http input delegate for tl::InputStream
*
* Implements the reader from a server using the HTTP protocol
*/
class TL_PUBLIC InputHttpStream
: public QObject, public InputStreamBase
{
Q_OBJECT
public:
/**
* @brief Open a stream with the given URL
*/
InputHttpStream (const std::string &url);
/**
* @brief Close the file
*
* The destructor will automatically close the connection.
*/
virtual ~InputHttpStream ();
/**
* @brief Sets the request verb
* The default verb is "GET"
*/
void set_request (const char *r);
/**
* @brief Sets data to be sent with the request
* If data is given, it is sent along with the request.
* This version takes a null-terminated string.
*/
void set_data (const char *data);
/**
* @brief Sets data to be sent with the request
* If data is given, it is sent along with the request.
* This version takes a data plus length.
*/
void set_data (const char *data, size_t n);
/**
* @brief Sets a header field
*/
void add_header (const std::string &name, const std::string &value);
/**
* @brief Read from the stream
* Implements the basic read method.
*/
virtual size_t read (char *b, size_t n);
virtual void reset ();
virtual std::string source () const
{
return m_url;
}
virtual std::string absolute_path () const
{
return m_url;
}
virtual std::string filename () const;
private slots:
void finished (QNetworkReply *);
void authenticationRequired (QNetworkReply *, QAuthenticator *);
void proxyAuthenticationRequired (const QNetworkProxy &, QAuthenticator *);
private:
std::string m_url;
QNetworkReply *mp_reply;
QByteArray m_request;
QByteArray m_data;
QBuffer *mp_buffer;
std::map<std::string, std::string> m_headers;
void issue_request (const QUrl &url);
};
}
#endif