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+/*************************************************************************
+** CMap.h **
+** **
+** This file is part of dvisvgm -- the DVI to SVG converter **
+** Copyright (C) 2005-2014 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_CMAP_H
+#define DVISVGM_CMAP_H
+
+#include <algorithm>
+#include <ostream>
+#include <vector>
+#include "FontEncoding.h"
+#include "types.h"
+
+
+struct CMap : public NamedFontEncoding
+{
+ virtual ~CMap () {}
+ virtual bool vertical () const =0;
+ virtual bool mapsToCID () const =0;
+ virtual const char* path () const;
+ virtual UInt32 cid (UInt32 c) const =0;
+ virtual UInt32 bfcode (UInt32 cid) const =0;
+ virtual std::string getROString () const =0;
+ virtual const FontEncoding* findCompatibleBaseFontMap (const PhysicalFont *font, CharMapID &charmapID) const;
+ virtual bool mapsToCharIndex () const {return mapsToCID();}
+
+ Character decode (UInt32 c) const {
+ if (mapsToCID())
+ return Character(Character::INDEX, cid(c));
+ return Character(Character::CHRCODE, bfcode(c));
+ }
+};
+
+
+struct IdentityCMap : public CMap
+{
+ UInt32 cid (UInt32 c) const {return c;}
+ UInt32 bfcode (UInt32 cid) const {return 0;}
+ std::string getROString () const {return "Adobe-Identity";}
+ bool mapsToCID() const {return true;}
+};
+
+
+struct IdentityHCMap : public IdentityCMap
+{
+ bool vertical () const {return false;}
+ const char* name () const {return "Identity-H";}
+};
+
+
+struct IdentityVCMap : public IdentityCMap
+{
+ bool vertical () const {return true;}
+ const char* name () const {return "Identity-V";}
+};
+
+
+struct UnicodeCMap : public CMap
+{
+ bool vertical () const {return false;}
+ const char* name () const {return "unicode";}
+ bool mapsToCID () const {return false;}
+ const char* path () const {return 0;}
+ UInt32 cid (UInt32 c) const {return c;}
+ UInt32 bfcode (UInt32 cid) const {return cid;}
+ std::string getROString () const {return "";}
+};
+
+
+class SegmentedCMap : public CMap
+{
+ friend class CMapReader;
+
+ class Range {
+ friend class SegmentedCMap;
+
+ public:
+ Range () : _min(0), _max(0), _cid(0) {}
+
+ Range (UInt32 min, UInt32 max, UInt32 cid) : _min(min), _max(max), _cid(cid) {
+ if (_min > _max)
+ std::swap(_min, _max);
+ }
+
+ UInt32 min () const {return _min;}
+ UInt32 max () const {return _max;}
+ UInt32 cid () const {return _cid;}
+ UInt32 decode (UInt32 c) const {return c-_min+_cid;}
+ bool operator < (const Range &r) const {return _min < r._min;}
+
+ protected:
+ bool join (const Range &r);
+ void setMinAndAdaptCID (UInt32 c) {_cid = decode(c); _min = c;}
+
+ private:
+ UInt32 _min, _max;
+ UInt32 _cid;
+ };
+
+ typedef std::vector<Range> Ranges;
+
+ public:
+ SegmentedCMap (const std::string &name) : _name(name), _basemap(0), _vertical(false), _mapsToCID(true) {}
+ const char* name () const {return _name.c_str();}
+ UInt32 cid (UInt32 c) const;
+ UInt32 bfcode (UInt32 cid) const;
+ void addCIDRange (UInt32 first, UInt32 last, UInt32 cid) {addRange(_cidranges, first, last, cid);}
+ void addBFRange (UInt32 first, UInt32 last, UInt32 chrcode) {addRange(_bfranges, first, last, chrcode);}
+ void write (std::ostream &os) const;
+ bool vertical () const {return _vertical;}
+ bool mapsToCID () const {return _mapsToCID;}
+ size_t numCIDRanges () const {return _cidranges.size();}
+ size_t numBFRanges () const {return _bfranges.size();}
+ std::string getROString () const;
+
+ protected:
+ void addRange (Ranges &ranges, UInt32 first, UInt32 last, UInt32 cid);
+ void adaptNeighbors (Ranges &ranges, Ranges::iterator it);
+ int lookup (const Ranges &ranges, UInt32 c) const;
+
+ private:
+ std::string _name;
+ std::string _registry;
+ std::string _ordering;
+ CMap *_basemap;
+ bool _vertical;
+ bool _mapsToCID; // true: chrcode->CID, false: CID->charcode
+ Ranges _cidranges;
+ Ranges _bfranges;
+};
+
+#endif