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/*************************************************************************
** CMapReader.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_CMAPREADER_H
#define DVISVGM_CMAPREADER_H
#include <cstdlib>
#include <istream>
#include <string>
#include <vector>
#include "MessageException.h"
struct CMap;
class InputReader;
class CMapReader
{
class Token
{
public:
enum Type {TT_UNKNOWN, TT_EOF, TT_DELIM, TT_NUMBER, TT_STRING, TT_NAME, TT_OPERATOR};
public:
Token (InputReader &ir);
void scan (InputReader &ir);
Type type () const {return _type;}
const std::string& strvalue () const {return _value;}
double numvalue () const {return std::atof(_value.c_str());}
private:
Type _type;
std::string _value;
};
public:
CMapReader ();
CMap* read (const std::string &fname);
CMap* read (std::istream &is, const std::string &name);
protected:
Token popToken () {Token t=_tokens.back(); _tokens.pop_back(); return t;}
void executeOperator (const std::string &op, InputReader &ir);
void op_beginbfchar (InputReader &ir);
void op_beginbfrange (InputReader &ir);
void op_begincidrange (InputReader &ir);
void op_def (InputReader &ir);
void op_endcmap (InputReader &ir);
void op_usecmap (InputReader &ir);
private:
SegmentedCMap *_cmap; ///< CMap being read
std::vector<Token> _tokens; ///< stack of tokens to be processed
bool _inCMap; ///< operator begincmap has been executed
};
struct CMapReaderException : public MessageException
{
CMapReaderException (const std::string &msg) : MessageException(msg) {}
};
#endif
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