| //======================================================================== |
| // |
| // CMap.h |
| // |
| // Copyright 2001-2003 Glyph & Cog, LLC |
| // |
| //======================================================================== |
| |
| //======================================================================== |
| // |
| // Modified under the Poppler project - http://poppler.freedesktop.org |
| // |
| // All changes made under the Poppler project to this file are licensed |
| // under GPL version 2 or later |
| // |
| // Copyright (C) 2008 Koji Otani <sho@bbr.jp> |
| // Copyright (C) 2009 Albert Astals Cid <aacid@kde.org> |
| // Copyright (C) 2012, 2017 Adrian Johnson <ajohnson@redneon.com> |
| // |
| // To see a description of the changes please see the Changelog file that |
| // came with your tarball or type make ChangeLog if you are building from git |
| // |
| //======================================================================== |
| |
| #ifndef CMAP_H |
| #define CMAP_H |
| |
| #ifdef USE_GCC_PRAGMAS |
| #pragma interface |
| #endif |
| |
| #include "poppler-config.h" |
| #include "goo/gtypes.h" |
| #include "CharTypes.h" |
| |
| #ifdef MULTITHREADED |
| #include "goo/GooMutex.h" |
| #endif |
| |
| class GooString; |
| class Object; |
| struct CMapVectorEntry; |
| class CMapCache; |
| class Stream; |
| |
| //------------------------------------------------------------------------ |
| |
| class CMap { |
| public: |
| |
| // Parse a CMap from <obj>, which can be a name or a stream. Sets |
| // the initial reference count to 1. Returns NULL on failure. |
| static CMap *parse(CMapCache *cache, GooString *collectionA, Object *obj); |
| |
| // Create the CMap specified by <collection> and <cMapName>. Sets |
| // the initial reference count to 1. Returns NULL on failure. |
| static CMap *parse(CMapCache *cache, GooString *collectionA, |
| GooString *cMapNameA); |
| |
| // Parse a CMap from <str>. Sets the initial reference count to 1. |
| // Returns NULL on failure. |
| static CMap *parse(CMapCache *cache, GooString *collectionA, Stream *str); |
| |
| // Create the CMap specified by <collection> and <cMapName>. Sets |
| // the initial reference count to 1. |
| // Stream is a stream containing the CMap, can be NULL and |
| // this means the CMap will be searched in the CMap files |
| // Returns NULL on failure. |
| static CMap *parse(CMapCache *cache, GooString *collectionA, |
| GooString *cMapNameA, Stream *stream); |
| |
| ~CMap(); |
| |
| void incRefCnt(); |
| void decRefCnt(); |
| |
| // Return collection name (<registry>-<ordering>). |
| GooString *getCollection() { return collection; } |
| |
| GooString *getCMapName() { return cMapName; } |
| |
| // Return true if this CMap matches the specified <collectionA>, and |
| // <cMapNameA>. |
| GBool match(GooString *collectionA, GooString *cMapNameA); |
| |
| // Return the CID corresponding to the character code starting at |
| // <s>, which contains <len> bytes. Sets *<c> to the char code, and |
| // *<nUsed> to the number of bytes used by the char code. |
| CID getCID(char *s, int len, CharCode *c, int *nUsed); |
| |
| // Return the writing mode (0=horizontal, 1=vertical). |
| int getWMode() { return wMode; } |
| |
| void setReverseMap(Guint *rmap, Guint rmapSize, Guint ncand); |
| |
| private: |
| |
| void parse2(CMapCache *cache, int (*getCharFunc)(void *), void *data); |
| CMap(GooString *collectionA, GooString *cMapNameA); |
| CMap(GooString *collectionA, GooString *cMapNameA, int wModeA); |
| void useCMap(CMapCache *cache, char *useName); |
| void useCMap(CMapCache *cache, Object *obj); |
| void copyVector(CMapVectorEntry *dest, CMapVectorEntry *src); |
| void addCIDs(Guint start, Guint end, Guint nBytes, CID firstCID); |
| void freeCMapVector(CMapVectorEntry *vec); |
| void setReverseMapVector(Guint startCode, CMapVectorEntry *vec, |
| Guint *rmap, Guint rmapSize, Guint ncand); |
| |
| GooString *collection; |
| GooString *cMapName; |
| GBool isIdent; // true if this CMap is an identity mapping, |
| // or is based on one (via usecmap) |
| int wMode; // writing mode (0=horizontal, 1=vertical) |
| CMapVectorEntry *vector; // vector for first byte (NULL for |
| // identity CMap) |
| int refCnt; |
| #ifdef MULTITHREADED |
| GooMutex mutex; |
| #endif |
| }; |
| |
| //------------------------------------------------------------------------ |
| |
| #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. |
| // Stream is a stream containing the CMap, can be NULL and |
| // this means the CMap will be searched in the CMap files |
| // Returns NULL on failure. |
| CMap *getCMap(GooString *collection, GooString *cMapName, Stream *stream); |
| |
| private: |
| |
| CMap *cache[cMapCacheSize]; |
| }; |
| |
| #endif |