/usr/include/poppler/PopplerCache.h is in libpoppler-dev 0.18.4-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// PopplerCache.h
//
// This file is licensed under the GPLv2 or later
//
// Copyright (C) 2009 Koji Otani <sho@bbr.jp>
// Copyright (C) 2009, 2010 Albert Astals Cid <aacid@kde.org>
// Copyright (C) 2010 Carlos Garcia Campos <carlosgc@gnome.org>
//
//========================================================================
#ifndef POPPLER_CACHE_H
#define POPPLER_CACHE_H
#include "Object.h"
class PopplerCacheItem
{
public:
virtual ~PopplerCacheItem();
};
class PopplerCacheKey
{
public:
virtual ~PopplerCacheKey();
virtual bool operator==(const PopplerCacheKey &key) const = 0;
};
class PopplerCache
{
public:
PopplerCache(int cacheSizeA);
~PopplerCache();
/* The item returned is owned by the cache */
PopplerCacheItem *lookup(const PopplerCacheKey &key);
/* The key and item pointers ownership is taken by the cache */
void put(PopplerCacheKey *key, PopplerCacheItem *item);
/* The max size of the cache */
int size();
/* The number of items in the cache */
int numberOfItems();
/* The n-th item in the cache */
PopplerCacheItem *item(int index);
/* The n-th key in the cache */
PopplerCacheKey *key(int index);
private:
PopplerCache(const PopplerCache &cache); // not allowed
PopplerCacheKey **keys;
PopplerCacheItem **items;
int lastValidCacheIndex;
int cacheSize;
};
class PopplerObjectCache
{
public:
PopplerObjectCache (int cacheSizeA, XRef *xrefA);
~PopplerObjectCache();
Object *put(const Ref &ref);
Object *lookup(const Ref &ref, Object *obj);
private:
XRef *xref;
PopplerCache *cache;
};
#endif
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