/usr/include/poppler/CMap.h is in libpoppler-dev 0.18.4-1ubuntu3.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// 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>
//
// 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"
#if MULTITHREADED
#include "goo/GooMutex.h"
#endif
class GooString;
struct CMapVectorEntry;
class CMapCache;
class Stream;
//------------------------------------------------------------------------
class CMap {
public:
// 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; }
// 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 *<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; }
void setReverseMap(Guint *rmap, Guint rmapSize, Guint ncand);
private:
CMap(GooString *collectionA, GooString *cMapNameA);
CMap(GooString *collectionA, GooString *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);
void setReverseMapVector(Guint startCode, CMapVectorEntry *vec,
Guint *rmap, Guint rmapSize, Guint ncand);
GooString *collection;
GooString *cMapName;
int wMode; // writing mode (0=horizontal, 1=vertical)
CMapVectorEntry *vector; // vector for first byte (NULL for
// identity CMap)
int refCnt;
#if 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
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