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-//========================================================================
-//
-// CharCodeToUnicode.h
-//
-// Mapping from character codes to Unicode.
-//
-// Copyright 2001-2003 Glyph & Cog, LLC
-//
-//========================================================================
-
-#ifndef CHARCODETOUNICODE_H
-#define CHARCODETOUNICODE_H
-
-#include <aconf.h>
-
-#ifdef USE_GCC_PRAGMAS
-#pragma interface
-#endif
-
-#include "CharTypes.h"
-
-#if MULTITHREADED
-#include "GMutex.h"
-#endif
-
-struct CharCodeToUnicodeString;
-
-//------------------------------------------------------------------------
-
-class CharCodeToUnicode {
-public:
-
- // Read the CID-to-Unicode mapping for <collection> from the file
- // specified by <fileName>. Sets the initial reference count to 1.
- // Returns NULL on failure.
- static CharCodeToUnicode *parseCIDToUnicode(GString *fileName,
- GString *collection);
-
- // Create a Unicode-to-Unicode mapping from the file specified by
- // <fileName>. Sets the initial reference count to 1. Returns NULL
- // on failure.
- static CharCodeToUnicode *parseUnicodeToUnicode(GString *fileName);
-
- // Create the CharCode-to-Unicode mapping for an 8-bit font.
- // <toUnicode> is an array of 256 Unicode indexes. Sets the initial
- // reference count to 1.
- static CharCodeToUnicode *make8BitToUnicode(Unicode *toUnicode);
-
- // Parse a ToUnicode CMap for an 8- or 16-bit font.
- static CharCodeToUnicode *parseCMap(GString *buf, int nBits);
-
- // Parse a ToUnicode CMap for an 8- or 16-bit font, merging it into
- // <this>.
- void mergeCMap(GString *buf, int nBits);
-
- ~CharCodeToUnicode();
-
- void incRefCnt();
- void decRefCnt();
-
- // Return true if this mapping matches the specified <tagA>.
- GBool match(GString *tagA);
-
- // Set the mapping for <c>.
- void setMapping(CharCode c, Unicode *u, int len);
-
- // Map a CharCode to Unicode.
- int mapToUnicode(CharCode c, Unicode *u, int size);
-
-private:
-
- void parseCMap1(int (*getCharFunc)(void *), void *data, int nBits);
- void addMapping(CharCode code, char *uStr, int n, int offset);
- CharCodeToUnicode(GString *tagA);
- CharCodeToUnicode(GString *tagA, Unicode *mapA,
- CharCode mapLenA, GBool copyMap,
- CharCodeToUnicodeString *sMapA,
- int sMapLenA, int sMapSizeA);
-
- GString *tag;
- Unicode *map;
- CharCode mapLen;
- CharCodeToUnicodeString *sMap;
- int sMapLen, sMapSize;
- int refCnt;
-#ifdef MULTITHREADED
- GMutex mutex;
-#endif
-};
-
-//------------------------------------------------------------------------
-
-class CharCodeToUnicodeCache {
-public:
-
- CharCodeToUnicodeCache(int sizeA);
- ~CharCodeToUnicodeCache();
-
- // Get the CharCodeToUnicode object for <tag>. Increments its
- // reference count; there will be one reference for the cache plus
- // one for the caller of this function. Returns NULL on failure.
- CharCodeToUnicode *getCharCodeToUnicode(GString *tag);
-
- // Insert <ctu> into the cache, in the most-recently-used position.
- void add(CharCodeToUnicode *ctu);
-
-private:
-
- CharCodeToUnicode **cache;
- int size;
-};
-
-#endif