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/*************************************************************************
** CMap.hpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2022 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 CMAP_HPP
#define CMAP_HPP
#include <algorithm>
#include <ostream>
#include <vector>
#include "FontEncoding.hpp"
#include "RangeMap.hpp"
struct CMap : public NamedFontEncoding {
virtual bool vertical () const =0;
virtual bool mapsToCID () const =0;
virtual uint32_t cid (uint32_t c) const =0;
virtual uint32_t bfcode (uint32_t cid) const =0;
virtual std::string getROString () const =0;
const char* path () const override;
const FontEncoding* findCompatibleBaseFontMap (const PhysicalFont *font, CharMapID &charmapID) const override;
bool mapsToCharIndex () const override {return mapsToCID();}
Character decode (uint32_t c) const override {
if (mapsToCID())
return Character(Character::INDEX, cid(c));
return Character(Character::CHRCODE, bfcode(c));
}
};
struct IdentityCMap : public CMap {
uint32_t cid (uint32_t c) const override {return c;}
uint32_t bfcode (uint32_t cid) const override {return 0;}
std::string getROString () const override {return "Adobe-Identity";}
bool mapsToCID() const override {return true;}
};
struct IdentityHCMap : public IdentityCMap {
bool vertical () const override {return false;}
const char* name () const override {return "Identity-H";}
};
struct IdentityVCMap : public IdentityCMap {
bool vertical () const override {return true;}
const char* name () const override {return "Identity-V";}
};
struct UnicodeCMap : public CMap {
bool vertical () const override {return false;}
const char* name () const override {return "unicode";}
bool mapsToCID () const override {return false;}
const char* path () const override {return nullptr;}
uint32_t cid (uint32_t c) const override {return c;}
uint32_t bfcode (uint32_t cid) const override {return cid;}
std::string getROString () const override {return "";}
bool mapsToUnicode () const override {return true;}
};
class SegmentedCMap : public CMap {
friend class CMapReader;
public:
explicit SegmentedCMap (std::string fname) : _filename(std::move(fname)) {}
const char* name () const override {return _filename.c_str();}
uint32_t cid (uint32_t c) const override;
uint32_t bfcode (uint32_t cid) const override;
void addCIDRange (uint32_t first, uint32_t last, uint32_t cid);
void addBFRange (uint32_t first, uint32_t last, uint32_t chrcode);
void write (std::ostream &os) const;
bool vertical () const override {return _vertical;}
bool mapsToCID () const override {return _mapsToCID;}
size_t numCIDRanges () const {return _cidranges.numRanges();}
size_t numBFRanges () const {return _bfranges.numRanges();}
std::string getROString () const override;
bool mapsToUnicode () const override;
private:
std::string _filename;
std::string _registry;
std::string _ordering;
std::string _cmaptype;
CMap *_basemap = nullptr;
bool _vertical = false;
bool _mapsToCID = true; // true: chrcode->CID, false: CID->charcode
RangeMap _cidranges;
RangeMap _bfranges;
};
#endif
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