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/*************************************************************************
** BasicDVIReader.h **
** **
** This file is part of dvisvgm -- the DVI to SVG converter **
** Copyright (C) 2005-2015 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 3 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, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#ifndef DVISVGM_BASICDVIREADER_H
#define DVISVGM_BASICDVIREADER_H
#include "MessageException.h"
#include "StreamReader.h"
struct DVIException : public MessageException
{
DVIException (const std::string &msg) : MessageException(msg) {}
};
struct InvalidDVIFileException : public DVIException
{
InvalidDVIFileException(const std::string &msg) : DVIException(msg) {}
};
class Matrix;
class BasicDVIReader : public StreamReader
{
protected:
typedef void (BasicDVIReader::*CommandHandler)(int);
enum DVIFormat {DVI_NONE=0, DVI_STANDARD=2, DVI_PTEX=3, DVI_XDV=5};
public:
BasicDVIReader (std::istream &is);
virtual ~BasicDVIReader () {}
virtual void executeAllPages ();
virtual double getXPos () const {return 0;}
virtual double getYPos () const {return 0;}
virtual void finishLine () {}
virtual void translateToX (double x) {}
virtual void translateToY (double y) {}
virtual int getStackDepth () const {return 0;}
virtual void getPageTransformation (Matrix &matrix) const {}
virtual unsigned getCurrentPageNumber () const {return 0;}
protected:
void setDVIFormat (DVIFormat format);
DVIFormat getDVIFormat () const {return _dviFormat;}
virtual int evalCommand (CommandHandler &handler, int ¶m);
virtual int executeCommand ();
void executePostPost ();
// the following methods represent the DVI commands
// they are called by executeCommand and should not be used directly
virtual void cmdSetChar0 (int c);
virtual void cmdSetChar (int len);
virtual void cmdPutChar (int len);
virtual void cmdSetRule (int len);
virtual void cmdPutRule (int len);
virtual void cmdNop (int len);
virtual void cmdBop (int len);
virtual void cmdEop (int len);
virtual void cmdPush (int len);
virtual void cmdPop (int len);
virtual void cmdDir (int len);
virtual void cmdRight (int len);
virtual void cmdDown (int len);
virtual void cmdX0 (int len);
virtual void cmdY0 (int len);
virtual void cmdW0 (int len);
virtual void cmdZ0 (int len);
virtual void cmdX (int len);
virtual void cmdY (int len);
virtual void cmdW (int len);
virtual void cmdZ (int len);
virtual void cmdFontDef (int len);
virtual void cmdFontNum0 (int n);
virtual void cmdFontNum (int len);
virtual void cmdXXX (int len);
virtual void cmdPre (int len);
virtual void cmdPost (int len);
virtual void cmdPostPost (int len);
virtual void cmdXPic (int len);
virtual void cmdXFontDef (int len);
virtual void cmdXGlyphA (int len);
virtual void cmdXGlyphS (int len);
private:
DVIFormat _dviFormat; ///< format of DVI file being processed
};
#endif
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