mirror of
https://invent.kde.org/graphics/okular
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89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
//========================================================================
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//
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// CharCodeToUnicode.h
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//
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// Mapping from character codes to Unicode.
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//
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// Copyright 2001-2002 Glyph & Cog, LLC
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//
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//========================================================================
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#ifndef CHARCODETOUNICODE_H
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#define CHARCODETOUNICODE_H
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#ifdef __GNUC__
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#pragma interface
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#endif
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#include "CharTypes.h"
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struct CharCodeToUnicodeString;
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//------------------------------------------------------------------------
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class CharCodeToUnicode {
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public:
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// Create the CID-to-Unicode mapping specified by <collection>.
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// This reads a .cidToUnicode file from disk. Sets the initial
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// reference count to 1. Returns NULL on failure.
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static CharCodeToUnicode *parseCIDToUnicode(GString *collectionA);
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// Create the CharCode-to-Unicode mapping for an 8-bit font.
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// <toUnicode> is an array of 256 Unicode indexes. Sets the initial
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// reference count to 1.
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static CharCodeToUnicode *make8BitToUnicode(Unicode *toUnicode);
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// Parse a ToUnicode CMap for an 8- or 16-bit font.
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static CharCodeToUnicode *parseCMap(GString *buf, int nBits);
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~CharCodeToUnicode();
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void incRefCnt();
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void decRefCnt();
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// Return true if this mapping matches the specified <collectionA>.
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GBool match(GString *collectionA);
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// Map a CharCode to Unicode.
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int mapToUnicode(CharCode c, Unicode *u, int size);
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private:
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void parseCMap1(int (*getCharFunc)(void *), void *data, int nBits);
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CharCodeToUnicode(GString *collectionA);
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CharCodeToUnicode(GString *collectionA, Unicode *mapA,
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CharCode mapLenA, GBool copyMap,
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CharCodeToUnicodeString *sMapA, int sMapLenA);
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GString *collection;
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Unicode *map;
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CharCode mapLen;
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CharCodeToUnicodeString *sMap;
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int sMapLen, sMapSize;
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int refCnt;
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};
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//------------------------------------------------------------------------
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#define cidToUnicodeCacheSize 4
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class CIDToUnicodeCache {
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public:
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CIDToUnicodeCache();
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~CIDToUnicodeCache();
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// Get the CharCodeToUnicode object for <collection>. Increments
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// its reference count; there will be one reference for the cache
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// plus one for the caller of this function. Returns NULL on
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// failure.
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CharCodeToUnicode *getCIDToUnicode(GString *collection);
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private:
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CharCodeToUnicode *cache[cidToUnicodeCacheSize];
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};
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#endif
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