/***********************************************************************
** StreamReader.h                                                     **
**                                                                    **
** This file is part of dvisvgm -- the DVI to SVG converter           **
** Copyright (C) 2005-2007 Martin Gieseking <martin.gieseking@uos.de> **
**                                                                    **
** 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 Street, Fifth Floor,                 **
** Boston, MA 02110-1301, USA.                                        **
***********************************************************************/
// $Id: StreamReader.h 52 2007-03-25 21:08:59Z mgieseki $

#ifndef STREAMREADER_H
#define STREAMREADER_H

#include <istream>
#include <string>
#include <vector>
#include "MessageException.h"
#include "types.h"

using std::istream;
using std::string;
using std::vector;

class StreamReader
{
   public:
		StreamReader (istream &s);
		virtual ~StreamReader () {}
		istream& replaceStream (istream &s);
		UInt32 readUnsigned (int n);
		Int32 readSigned (int n);
		string readString (int length);
		vector<UInt8>& readBytes (int n, vector<UInt8> &bytes);
		int readByte ()     {return is->get();}

	protected:
		istream& in () {return *is;}

   private:
		istream *is;
};


struct StreamReaderException : public MessageException
{
	StreamReaderException (const string &msg) : MessageException(msg) {}
};

#endif