dbus-cplusplus/include/dbus-c++/message.h

/*
 *
 *  D-Bus++ - C++ bindings for DBus
 *
 *  Copyright (C) 2005-2006  Paolo Durante <shackan@gmail.com>
 *
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */


#ifndef __DBUSXX_MESSAGE_H
#define __DBUSXX_MESSAGE_H

#include <string>
#include <map>

#include "util.h"

namespace DBus {

class Message;
class ErrorMessage;
class SignalMessage;
class ReturnMessage;
class Error;
class Connection;

class MessageIter
{
public:

	MessageIter() {}

	int type();

	bool at_end();

	bool has_next();

	MessageIter& operator ++();

	MessageIter operator ++(int);

	bool append_byte( unsigned char byte );

	unsigned char get_byte();

	bool append_bool( bool b );

	bool get_bool();

	bool append_int16( signed short i );

	signed short get_int16();

	bool append_uint16( unsigned short u );

	unsigned short get_uint16();

	bool append_int32( signed int i );

	signed int get_int32();

	bool append_uint32( unsigned int u );

	unsigned int get_uint32();

	bool append_int64( signed long long i );

	signed long long get_int64();

	bool append_uint64( unsigned long long i );

	unsigned long long get_uint64();

	bool append_double( double d );

	double get_double();
	
	bool append_string( const char* chars );

	const char* get_string();

	bool append_path( const char* chars );

	const char* get_path();

	bool append_signature( const char* chars );

	const char* get_signature();

	char* signature() const; //returned string must be manually free()'d
	
	MessageIter recurse();

	bool append_array( char type, const void* ptr, size_t length );

	int array_type();

	int get_array( void* ptr );

	MessageIter new_array( const char* sig );

	bool is_array();

	int array_length();

	MessageIter new_dict_entry();

	bool is_dict();

	MessageIter new_variant( const char* sig );

	MessageIter new_struct();

	void close_container( MessageIter& container );

	void copy_data( MessageIter& to );

	Message& msg() const
	{
		return *_msg;
	}

private:

	MessageIter(Message& msg) : _msg(&msg) {}

	bool append_basic( int type_id, void* value );

	void get_basic( int type_id, void* ptr );

private:

	/* I'm sorry, but don't want to include dbus.h in the public api
	 */
	unsigned char _iter[sizeof(void*)*3+sizeof(int)*11];

	Message* _msg;

friend class Message;
};

class Message
{
public:
	
	struct Private;

	Message( Private* );

	Message( const Message& m );

	~Message();

	Message copy();

	int type() const;

	int serial() const;

	int reply_serial() const;

	bool reply_serial( int );

	const char* sender() const;

	bool sender( const char* s );

	const char* destination() const;

	bool destination( const char* s );

	bool is_error() const;

	bool is_signal( const char* interface, const char* member ) const;

	MessageIter reader() const;

	MessageIter writer();

	bool append( int first_type, ... );

	void terminate();

protected:

	Message();

protected:

	RefPtrI<Private> _pvt;

/*	classes who need to read `_pvt` directly
*/
friend class ErrorMessage;
friend class ReturnMessage;
friend class MessageIter;
friend class Error;
friend class Connection;
};

/*
*/

class ErrorMessage : public Message
{
public:
	
	ErrorMessage();

	ErrorMessage( const Message&, const char* name, const char* message );

	const char* name() const;

	bool name( const char* n );

	bool operator == ( const ErrorMessage& ) const;
};

/*
*/

class SignalMessage : public Message
{
public:

	SignalMessage( const char* name );

	SignalMessage( const char* path, const char* interface, const char* name );

	const char* interface() const;

	bool interface( const char* i );

	const char* member() const;

	bool member( const char* m );

	const char* path() const;

	char** path_split() const;

	bool path( const char* p );

	bool operator == ( const SignalMessage& ) const;
};

/*
*/

class CallMessage : public Message
{
public:
	
	CallMessage();

	CallMessage( const char* dest, const char* path, const char* iface, const char* method );

	const char* interface() const;

	bool interface( const char* i );

	const char* member() const;

	bool member( const char* m );

	const char* path() const;

	char** path_split() const;

	bool path( const char* p );

	const char* signature() const;

	bool operator == ( const CallMessage& ) const;
};

/*
*/

class ReturnMessage : public Message
{
public:
	
	ReturnMessage( const CallMessage& callee );

	const char* signature() const;
};

} /* namespace DBus */

#endif//__DBUSXX_MESSAGE_H