// @(#)root/io:$Id: TZIPFile.h 23916 2008-05-19 20:01:28Z brun $ // Author: Fons Rademakers 30/6/04 /************************************************************************* * Copyright (C) 1995-2004, Rene Brun and Fons Rademakers. * * All rights reserved. * * * * For the licensing terms see $ROOTSYS/LICENSE. * * For the list of contributors see $ROOTSYS/README/CREDITS. * *************************************************************************/ #ifndef ROOT_TZIPFile #define ROOT_TZIPFile ////////////////////////////////////////////////////////////////////////// // // // TZIPFile // // // // This class describes a ZIP archive file containing multiple // // sub-files. Typically the sub-files are ROOT files. Notice that // // the ROOT files should not be compressed when being added to the // // ZIP file, since ROOT files are normally already compressed. // // Such a ZIP file should be created like: // // // // zip -n root multi file1.root file2.root // // // // which creates a ZIP file multi.zip. // // // // For more on the ZIP file structure see TZIPFile.cxx. // // // ////////////////////////////////////////////////////////////////////////// #ifndef ROOT_TArchiveFile #include "TArchiveFile.h" #endif class TZIPMember; class TZIPFile : public TArchiveFile { protected: Long64_t fDirPos; // Central directory position Long64_t fDirSize; // Central directory size Long64_t fDirOffset; // Central directory offset (from the beginning of the archive) TString fComment; // Archive comment Long64_t FindEndHeader(); Int_t ReadEndHeader(Long64_t pos); Int_t ReadDirectory(); Int_t ReadMemberHeader(TZIPMember *member); UInt_t Get(const void *buffer, Int_t bytes); // ZIP archive constants enum EZIPConstants { // - Archive version required (and made) kARCHIVE_VERSION = 20, // - Magic header constants kDIR_HEADER_MAGIC = 0x02014b50, kENTRY_HEADER_MAGIC = 0x04034b50, kEND_HEADER_MAGIC = 0x06054b50, kZIP_MAGIC_LEN = 4, kMAX_VAR_LEN = 0xffff, // Max variable-width field length kMAX_SIZE = 0xffffffff, // Max size of things // - Offsets into the central directory headers kDIR_MAGIC_OFF = 0, kDIR_VMADE_OFF = 4, kDIR_VMADE_LEN = 2, kDIR_VREQD_OFF = 6, kDIR_VREQD_LEN = 2, kDIR_FLAG_OFF = 8, kDIR_FLAG_LEN = 2, kDIR_METHOD_OFF = 10, kDIR_METHOD_LEN = 2, kDIR_DATE_OFF = 12, kDIR_DATE_LEN = 4, kDIR_CRC32_OFF = 16, kDIR_CRC32_LEN = 4, kDIR_CSIZE_OFF = 20, kDIR_CSIZE_LEN = 4, kDIR_USIZE_OFF = 24, kDIR_USIZE_LEN = 4, kDIR_NAMELEN_OFF = 28, kDIR_NAMELEN_LEN = 2, kDIR_EXTRALEN_OFF = 30, kDIR_EXTRALEN_LEN = 2, kDIR_COMMENTLEN_OFF = 32, kDIR_COMMENTLEN_LEN = 2, kDIR_DISK_START_OFF = 34, kDIR_DISK_START_LEN = 2, kDIR_INT_ATTR_OFF = 36, kDIR_INT_ATTR_LEN = 2, kDIR_EXT_ATTR_OFF = 38, kDIR_EXT_ATTR_LEN = 4, kDIR_ENTRY_POS_OFF = 42, kDIR_ENTRY_POS_LEN = 4, kDIR_HEADER_SIZE = 46, // - Offsets into the end-of-archive header kEND_MAGIC_OFF = 0, kEND_DISK_OFF = 4, kEND_DISK_LEN = 2, kEND_DIR_DISK_OFF = 6, kEND_DIR_DISK_LEN = 2, kEND_DISK_HDRS_OFF = 8, kEND_DISK_HDRS_LEN = 2, kEND_TOTAL_HDRS_OFF = 10, kEND_TOTAL_HDRS_LEN = 2, kEND_DIR_SIZE_OFF = 12, kEND_DIR_SIZE_LEN = 4, kEND_DIR_OFFSET_OFF = 16, kEND_DIR_OFFSET_LEN = 4, kEND_COMMENTLEN_OFF = 20, kEND_COMMENTLEN_LEN = 2, kEND_HEADER_SIZE = 22, // - Offsets into the local entry headers kENTRY_MAGIC_OFF = 0, kENTRY_VREQD_OFF = 4, kENTRY_VREQD_LEN = 2, kENTRY_FLAG_OFF = 6, kENTRY_FLAG_LEN = 2, kENTRY_METHOD_OFF = 8, kENTRY_METHOD_LEN = 2, kENTRY_DATE_OFF = 10, kENTRY_DATE_LEN = 4, kENTRY_CRC32_OFF = 14, kENTRY_CRC32_LEN = 4, kENTRY_CSIZE_OFF = 18, kENTRY_CSIZE_LEN = 4, kENTRY_USIZE_OFF = 22, kENTRY_USIZE_LEN = 4, kENTRY_NAMELEN_OFF = 26, kENTRY_NAMELEN_LEN = 2, kENTRY_EXTRALEN_OFF = 28, kENTRY_EXTRALEN_LEN = 2, kENTRY_HEADER_SIZE = 30, // - Compression method and strategy kSTORED = 0, // Stored as is kDEFLATED = 8 // Stored using deflate }; TZIPFile(const TZIPFile&); // Not implemented TZIPFile& operator=(const TZIPFile&); // Not implemented public: TZIPFile(); TZIPFile(const char *archive, const char *member, TFile *file); virtual ~TZIPFile() { } virtual Int_t OpenArchive(); virtual Int_t SetCurrentMember(); void Print(Option_t *option = "") const; ClassDef(TZIPFile,1) //A ZIP archive file }; ////////////////////////////////////////////////////////////////////////// // // // TZIPMember // // // // A ZIP archive consists of files compressed with the popular ZLIB // // compression algorithm; this class records the information about a // // single archive member. // // // ////////////////////////////////////////////////////////////////////////// class TZIPMember : public TArchiveMember { friend class TZIPFile; private: void *fLocal; // Extra file header data Long64_t fLocalLen; // Length of extra file header data void *fGlobal; // Extra directory data Long64_t fGlobalLen; // Length of extra directory data UInt_t fCRC32; // CRC-32 for all decompressed data UInt_t fAttrInt; // Internal file attributes UInt_t fAttrExt; // External file attributes UInt_t fMethod; // Compression type UInt_t fLevel; // Compression level public: TZIPMember(); TZIPMember(const char *name); TZIPMember(const TZIPMember &member); TZIPMember &operator=(const TZIPMember &rhs); virtual ~TZIPMember(); void *GetLocal() const { return fLocal; } Long64_t GetLocalLen() const { return fLocalLen; } void *GetGlobal() const { return fGlobal; } Long64_t GetGlobalLen() const { return fGlobalLen; } UInt_t GetCRC32() const { return fCRC32; } UInt_t GetAttrInt() const { return fAttrInt; } UInt_t GetAttrExt() const { return fAttrExt; } UInt_t GetMethod() const { return fMethod; } UInt_t GetLevel() const { return fLevel; } void Print(Option_t *option = "") const; ClassDef(TZIPMember,1) //A ZIP archive member file }; #endif