OgreZip.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2012 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/
#ifndef __Zip_H__
#define __Zip_H__

#include "OgrePrerequisites.h"

#include "OgreArchive.h"
#include "OgreArchiveFactory.h"

// Forward declaration for zziplib to avoid header file dependency.
typedef struct zzip_dir     ZZIP_DIR;
typedef struct zzip_file    ZZIP_FILE;
typedef union _zzip_plugin_io zzip_plugin_io_handlers;

namespace Ogre {

    class _OgreExport ZipArchive : public Archive 
    {
    protected:
        ZZIP_DIR* mZzipDir;
        void checkZzipError(int zzipError, const String& operation) const;
        FileInfoList mFileList;
        zzip_plugin_io_handlers* mPluginIo;

        OGRE_AUTO_MUTEX
    public:
        ZipArchive(const String& name, const String& archType, zzip_plugin_io_handlers* pluginIo = NULL);
        ~ZipArchive();
        bool isCaseSensitive(void) const { return false; }

        void load();
        void unload();

        DataStreamPtr open(const String& filename, bool readOnly = true) const;

        DataStreamPtr create(const String& filename) const;

        void remove(const String& filename) const;

        StringVectorPtr list(bool recursive = true, bool dirs = false);

        FileInfoListPtr listFileInfo(bool recursive = true, bool dirs = false);

        StringVectorPtr find(const String& pattern, bool recursive = true,
            bool dirs = false);

        FileInfoListPtr findFileInfo(const String& pattern, bool recursive = true,
            bool dirs = false) const;

        bool exists(const String& filename);

        time_t getModifiedTime(const String& filename);
    };

    class _OgrePrivate ZipArchiveFactory : public ArchiveFactory
    {
    public:
        virtual ~ZipArchiveFactory() {}
        const String& getType(void) const;
        Archive *createInstance( const String& name ) 
        {
            return OGRE_NEW ZipArchive(name, "Zip");
        }
        void destroyInstance( Archive* arch) { OGRE_DELETE arch; }
    };

    class _OgreExport EmbeddedZipArchiveFactory : public ZipArchiveFactory
    {
    protected:
        static zzip_plugin_io_handlers* mPluginIo; 
    public:
        EmbeddedZipArchiveFactory();
        virtual ~EmbeddedZipArchiveFactory();
        const String& getType(void) const;
        Archive *createInstance( const String& name ) 
        {
            ZipArchive * resZipArchive = OGRE_NEW ZipArchive(name, "EmbeddedZip", mPluginIo);
            return resZipArchive;
        }
        
        typedef bool (*DecryptEmbeddedZipFileFunc)(size_t pos, void* buf, size_t len);

        static void addEmbbeddedFile(const String& name, const uint8 * fileData, 
                        size_t fileSize, DecryptEmbeddedZipFileFunc decryptFunc);

        static void removeEmbbeddedFile(const String& name);

    };

    class _OgrePrivate ZipDataStream : public DataStream
    {
    protected:
        ZZIP_FILE* mZzipFile;
        StaticCache<2 * OGRE_STREAM_TEMP_SIZE> mCache;
    public:
        ZipDataStream(ZZIP_FILE* zzipFile, size_t uncompressedSize);
        ZipDataStream(const String& name, ZZIP_FILE* zzipFile, size_t uncompressedSize);
        ~ZipDataStream();
        size_t read(void* buf, size_t count);
        size_t write(void* buf, size_t count);
        void skip(long count);
        void seek( size_t pos );
        size_t tell(void) const;
        bool eof(void) const;
        void close(void);


    };

}

#endif