160 lines
3.5 KiB
C++
160 lines
3.5 KiB
C++
// Copyright (C) 2002-2008 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#ifndef __C_ZIP_READER_H_INCLUDED__
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#define __C_ZIP_READER_H_INCLUDED__
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#include "IReferenceCounted.h"
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#include "IReadFile.h"
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#include "irrArray.h"
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#include "irrString.h"
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#include "IFileSystem.h"
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namespace irr
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{
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namespace io
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{
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// set if the file is encrypted
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const s16 ZIP_FILE_ENCRYPTED = 0x0001;
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// the fields crc-32, compressed size and uncompressed size are set to
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// zero in the local header
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const s16 ZIP_INFO_IN_DATA_DESCRITOR = 0x0008;
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#if defined(_MSC_VER) || defined(__BORLANDC__) || defined (__BCPLUSPLUS__)
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# pragma pack( push, packing )
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# pragma pack( 1 )
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# define PACK_STRUCT
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#elif defined( __GNUC__ )
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# define PACK_STRUCT __attribute__((packed))
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#else
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# error compiler not supported
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#endif
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struct SZIPFileDataDescriptor
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{
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s32 CRC32;
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s32 CompressedSize;
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s32 UncompressedSize;
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} PACK_STRUCT;
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struct SZIPFileHeader
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{
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s32 Sig;
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s16 VersionToExtract;
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s16 GeneralBitFlag;
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s16 CompressionMethod;
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s16 LastModFileTime;
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s16 LastModFileDate;
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SZIPFileDataDescriptor DataDescriptor;
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s16 FilenameLength;
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s16 ExtraFieldLength;
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} PACK_STRUCT;
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// Default alignment
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#if defined(_MSC_VER) || defined(__BORLANDC__) || defined (__BCPLUSPLUS__)
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# pragma pack( pop, packing )
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#endif
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#undef PACK_STRUCT
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struct SZipFileEntry
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{
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core::stringc zipFileName;
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core::stringc simpleFileName;
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core::stringc path;
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s32 fileDataPosition; // position of compressed data in file
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SZIPFileHeader header;
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bool operator < (const SZipFileEntry& other) const
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{
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return simpleFileName < other.simpleFileName;
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}
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bool operator == (const SZipFileEntry& other) const
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{
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return simpleFileName == other.simpleFileName;
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}
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};
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/*!
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Zip file Reader written April 2002 by N.Gebhardt.
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Doesn't decompress data, only reads the file and is able to
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open uncompressed entries.
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*/
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class CZipReader : public virtual IReferenceCounted
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{
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public:
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CZipReader(IReadFile* file, bool ignoreCase, bool ignorePaths);
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virtual ~CZipReader();
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//! opens a file by file name
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virtual IReadFile* openFile(const c8* filename);
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//! opens a file by index
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IReadFile* openFile(s32 index);
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//! returns count of files in archive
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s32 getFileCount();
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//! returns data of file
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const SZipFileEntry* getFileInfo(s32 index) const;
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//! returns fileindex
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s32 findFile(const c8* filename);
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private:
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//! scans for a local header, returns false if there is no more
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//! local file header.
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bool scanLocalHeader();
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IReadFile* File;
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protected:
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//! splits filename from zip file into useful filenames and paths
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void extractFilename(SZipFileEntry* entry);
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//! deletes the path from a filename
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void deletePathFromFilename(core::stringc& filename);
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bool IgnoreCase;
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bool IgnorePaths;
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core::array<SZipFileEntry> FileList;
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};
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class CUnZipReader : public CZipReader
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{
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public:
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CUnZipReader(IFileSystem *parent, const c8* basename,
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bool ignoreCase, bool ignorePaths);
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//! opens a file by file name
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virtual IReadFile* openFile(const c8* filename);
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//! returns fileindex
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s32 findFile(const c8* filename);
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private:
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IFileSystem *Parent;
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void buildDirectory ();
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core::stringc Base;
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};
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} // end namespace io
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} // end namespace irr
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#endif
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