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// -*- C++ -*-
//========================================================================
//
// CMap.h
//
// Copyright 2001-2002 Glyph & Cog, LLC
//
//========================================================================
#ifndef CMAP_H
#define CMAP_H
#include "aconf.h"
#ifdef USE_GCC_PRAGMAS
#pragma interface
#endif
#include "gtypes.h"
#include "chartypes.h"
class GString;
struct CMapVectorEntry;
class CMapCache;
//------------------------------------------------------------------------
class CMap {
public:
// Create the CMap specified by <collection> and <cMapName>. Sets
// the initial reference count to 1. Returns NULL on failure.
static CMap *parse(CMapCache *cache, GString *collectionA,
GString *cMapNameA);
~CMap();
void incRefCnt();
void decRefCnt();
// Return collection name (<registry>-<ordering>).
GString *getCollection() { return collection; }
// Return true if this CMap matches the specified <collectionA>, and
// <cMapNameA>.
GBool match(GString *collectionA, GString *cMapNameA);
// Return the CID corresponding to the character code starting at
// <s>, which contains <len> bytes. Sets *<nUsed> to the number of
// bytes used by the char code.
CID getCID(char *s, int len, int *nUsed);
// Return the writing mode (0=horizontal, 1=vertical).
int getWMode() { return wMode; }
private:
CMap(GString *collectionA, GString *cMapNameA);
CMap(GString *collectionA, GString *cMapNameA, int wModeA);
void useCMap(CMapCache *cache, char *useName);
void copyVector(CMapVectorEntry *dest, CMapVectorEntry *src);
void addCodeSpace(CMapVectorEntry *vec, Guint start, Guint end,
Guint nBytes);
void addCIDs(Guint start, Guint end, Guint nBytes, CID firstCID);
void freeCMapVector(CMapVectorEntry *vec);
GString *collection;
GString *cMapName;
int wMode; // writing mode (0=horizontal, 1=vertical)
CMapVectorEntry *vector; // vector for first byte (NULL for
// identity CMap)
int refCnt;
};
//------------------------------------------------------------------------
#define cMapCacheSize 4
class CMapCache {
public:
CMapCache();
~CMapCache();
// Get the <cMapName> CMap for the specified character collection.
// Increments its reference count; there will be one reference for
// the cache plus one for the caller of this function. Returns NULL
// on failure.
CMap *getCMap(GString *collection, GString *cMapName);
private:
CMap *cache[cMapCacheSize];
};
#endif
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