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Diffstat (limited to 'dviware/dvisvgm/src/CMap.hpp')
-rw-r--r-- | dviware/dvisvgm/src/CMap.hpp | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/CMap.hpp b/dviware/dvisvgm/src/CMap.hpp new file mode 100644 index 0000000000..0f0259e853 --- /dev/null +++ b/dviware/dvisvgm/src/CMap.hpp @@ -0,0 +1,108 @@ +/************************************************************************* +** CMap.hpp ** +** ** +** This file is part of dvisvgm -- a fast DVI to SVG converter ** +** Copyright (C) 2005-2019 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 "";} +}; + + +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) {_cidranges.addRange(first, last, cid);} + void addBFRange (uint32_t first, uint32_t last, uint32_t chrcode) {_bfranges.addRange(first, last, 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; + + private: + std::string _filename; + std::string _registry; + std::string _ordering; + CMap *_basemap = nullptr; + bool _vertical = false; + bool _mapsToCID = true; // true: chrcode->CID, false: CID->charcode + RangeMap _cidranges; + RangeMap _bfranges; +}; + +#endif |