/usr/include/poppler/UnicodeMap.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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//
// UnicodeMap.h
//
// Mapping from Unicode to an encoding.
//
// Copyright 2001-2003 Glyph & Cog, LLC
//
//========================================================================
#ifndef UNICODEMAP_H
#define UNICODEMAP_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;
//------------------------------------------------------------------------
enum UnicodeMapKind {
unicodeMapUser, // read from a file
unicodeMapResident, // static list of ranges
unicodeMapFunc // function pointer
};
typedef int (*UnicodeMapFunc)(Unicode u, char *buf, int bufSize);
struct UnicodeMapRange {
Unicode start, end; // range of Unicode chars
Guint code, nBytes; // first output code
};
struct UnicodeMapExt;
//------------------------------------------------------------------------
class UnicodeMap {
public:
// Create the UnicodeMap specified by <encodingName>. Sets the
// initial reference count to 1. Returns NULL on failure.
static UnicodeMap *parse(GooString *encodingNameA);
// Create a resident UnicodeMap.
UnicodeMap(char *encodingNameA, GBool unicodeOutA,
UnicodeMapRange *rangesA, int lenA);
// Create a resident UnicodeMap that uses a function instead of a
// list of ranges.
UnicodeMap(char *encodingNameA, GBool unicodeOutA,
UnicodeMapFunc funcA);
~UnicodeMap();
void incRefCnt();
void decRefCnt();
GooString *getEncodingName() { return encodingName; }
GBool isUnicode() { return unicodeOut; }
// Return true if this UnicodeMap matches the specified
// <encodingNameA>.
GBool match(GooString *encodingNameA);
// Map Unicode to the target encoding. Fills in <buf> with the
// output and returns the number of bytes used. Output will be
// truncated at <bufSize> bytes. No string terminator is written.
// Returns 0 if no mapping is found.
int mapUnicode(Unicode u, char *buf, int bufSize);
private:
UnicodeMap(GooString *encodingNameA);
GooString *encodingName;
UnicodeMapKind kind;
GBool unicodeOut;
union {
UnicodeMapRange *ranges; // (user, resident)
UnicodeMapFunc func; // (func)
};
int len; // (user, resident)
UnicodeMapExt *eMaps; // (user)
int eMapsLen; // (user)
int refCnt;
#if MULTITHREADED
GooMutex mutex;
#endif
};
//------------------------------------------------------------------------
#define unicodeMapCacheSize 4
class UnicodeMapCache {
public:
UnicodeMapCache();
~UnicodeMapCache();
// Get the UnicodeMap for <encodingName>. Increments its reference
// count; there will be one reference for the cache plus one for the
// caller of this function. Returns NULL on failure.
UnicodeMap *getUnicodeMap(GooString *encodingName);
private:
UnicodeMap *cache[unicodeMapCacheSize];
};
#endif
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