///////////////////////////////////////////////////////////////////////////// // Name: wx/zipstrm.h // Purpose: Streams for Zip files // Author: Mike Wetherell // RCS-ID: $Id: zipstrm.h 53135 2008-04-12 02:31:04Z VZ $ // Copyright: (c) Mike Wetherell // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_WXZIPSTREAM_H__ #define _WX_WXZIPSTREAM_H__ #include "wx/defs.h" #if wxUSE_ZIPSTREAM #include "wx/archive.h" #include "wx/filename.h" // some methods from wxZipInputStream and wxZipOutputStream stream do not get // exported/imported when compiled with Mingw versions before 3.4.2. So they // are imported/exported individually as a workaround #if (defined(__GNUWIN32__) || defined(__MINGW32__)) \ && (!defined __GNUC__ \ || !defined __GNUC_MINOR__ \ || !defined __GNUC_PATCHLEVEL__ \ || __GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ < 30402) #define WXZIPFIX WXDLLIMPEXP_BASE #else #define WXZIPFIX #endif ///////////////////////////////////////////////////////////////////////////// // constants // Compression Method, only 0 (store) and 8 (deflate) are supported here // enum wxZipMethod { wxZIP_METHOD_STORE, wxZIP_METHOD_SHRINK, wxZIP_METHOD_REDUCE1, wxZIP_METHOD_REDUCE2, wxZIP_METHOD_REDUCE3, wxZIP_METHOD_REDUCE4, wxZIP_METHOD_IMPLODE, wxZIP_METHOD_TOKENIZE, wxZIP_METHOD_DEFLATE, wxZIP_METHOD_DEFLATE64, wxZIP_METHOD_BZIP2 = 12, wxZIP_METHOD_DEFAULT = 0xffff }; // Originating File-System. // // These are Pkware's values. Note that Info-zip disagree on some of them, // most notably NTFS. // enum wxZipSystem { wxZIP_SYSTEM_MSDOS, wxZIP_SYSTEM_AMIGA, wxZIP_SYSTEM_OPENVMS, wxZIP_SYSTEM_UNIX, wxZIP_SYSTEM_VM_CMS, wxZIP_SYSTEM_ATARI_ST, wxZIP_SYSTEM_OS2_HPFS, wxZIP_SYSTEM_MACINTOSH, wxZIP_SYSTEM_Z_SYSTEM, wxZIP_SYSTEM_CPM, wxZIP_SYSTEM_WINDOWS_NTFS, wxZIP_SYSTEM_MVS, wxZIP_SYSTEM_VSE, wxZIP_SYSTEM_ACORN_RISC, wxZIP_SYSTEM_VFAT, wxZIP_SYSTEM_ALTERNATE_MVS, wxZIP_SYSTEM_BEOS, wxZIP_SYSTEM_TANDEM, wxZIP_SYSTEM_OS_400 }; // Dos/Win file attributes // enum wxZipAttributes { wxZIP_A_RDONLY = 0x01, wxZIP_A_HIDDEN = 0x02, wxZIP_A_SYSTEM = 0x04, wxZIP_A_SUBDIR = 0x10, wxZIP_A_ARCH = 0x20, wxZIP_A_MASK = 0x37 }; // Values for the flags field in the zip headers // enum wxZipFlags { wxZIP_ENCRYPTED = 0x0001, wxZIP_DEFLATE_NORMAL = 0x0000, // normal compression wxZIP_DEFLATE_EXTRA = 0x0002, // extra compression wxZIP_DEFLATE_FAST = 0x0004, // fast compression wxZIP_DEFLATE_SUPERFAST = 0x0006, // superfast compression wxZIP_DEFLATE_MASK = 0x0006, wxZIP_SUMS_FOLLOW = 0x0008, // crc and sizes come after the data wxZIP_ENHANCED = 0x0010, wxZIP_PATCH = 0x0020, wxZIP_STRONG_ENC = 0x0040, wxZIP_UNUSED = 0x0F80, wxZIP_RESERVED = 0xF000 }; // Forward decls // class WXDLLIMPEXP_FWD_BASE wxZipEntry; class WXDLLIMPEXP_FWD_BASE wxZipInputStream; ///////////////////////////////////////////////////////////////////////////// // wxZipNotifier class WXDLLIMPEXP_BASE wxZipNotifier { public: virtual ~wxZipNotifier() { } virtual void OnEntryUpdated(wxZipEntry& entry) = 0; }; ///////////////////////////////////////////////////////////////////////////// // Zip Entry - holds the meta data for a file in the zip class WXDLLIMPEXP_BASE wxZipEntry : public wxArchiveEntry { public: wxZipEntry(const wxString& name = wxEmptyString, const wxDateTime& dt = wxDateTime::Now(), wxFileOffset size = wxInvalidOffset); virtual ~wxZipEntry(); wxZipEntry(const wxZipEntry& entry); wxZipEntry& operator=(const wxZipEntry& entry); // Get accessors wxDateTime GetDateTime() const { return m_DateTime; } wxFileOffset GetSize() const { return m_Size; } wxFileOffset GetOffset() const { return m_Offset; } wxString GetInternalName() const { return m_Name; } int GetMethod() const { return m_Method; } int GetFlags() const { return m_Flags; } wxUint32 GetCrc() const { return m_Crc; } wxFileOffset GetCompressedSize() const { return m_CompressedSize; } int GetSystemMadeBy() const { return m_SystemMadeBy; } wxString GetComment() const { return m_Comment; } wxUint32 GetExternalAttributes() const { return m_ExternalAttributes; } wxPathFormat GetInternalFormat() const { return wxPATH_UNIX; } int GetMode() const; const char *GetLocalExtra() const; size_t GetLocalExtraLen() const; const char *GetExtra() const; size_t GetExtraLen() const; wxString GetName(wxPathFormat format = wxPATH_NATIVE) const; // is accessors inline bool IsDir() const; inline bool IsText() const; inline bool IsReadOnly() const; inline bool IsMadeByUnix() const; // set accessors void SetDateTime(const wxDateTime& dt) { m_DateTime = dt; } void SetSize(wxFileOffset size) { m_Size = size; } void SetMethod(int method) { m_Method = (wxUint16)method; } void SetComment(const wxString& comment) { m_Comment = comment; } void SetExternalAttributes(wxUint32 attr ) { m_ExternalAttributes = attr; } void SetSystemMadeBy(int system); void SetMode(int mode); void SetExtra(const char *extra, size_t len); void SetLocalExtra(const char *extra, size_t len); inline void SetName(const wxString& name, wxPathFormat format = wxPATH_NATIVE); static wxString GetInternalName(const wxString& name, wxPathFormat format = wxPATH_NATIVE, bool *pIsDir = NULL); // set is accessors void SetIsDir(bool isDir = true); inline void SetIsReadOnly(bool isReadOnly = true); inline void SetIsText(bool isText = true); wxZipEntry *Clone() const { return ZipClone(); } void SetNotifier(wxZipNotifier& notifier); void UnsetNotifier(); protected: // Internal attributes enum { TEXT_ATTR = 1 }; // protected Get accessors int GetVersionNeeded() const { return m_VersionNeeded; } wxFileOffset GetKey() const { return m_Key; } int GetVersionMadeBy() const { return m_VersionMadeBy; } int GetDiskStart() const { return m_DiskStart; } int GetInternalAttributes() const { return m_InternalAttributes; } void SetVersionNeeded(int version) { m_VersionNeeded = (wxUint16)version; } void SetOffset(wxFileOffset offset) { m_Offset = offset; } void SetFlags(int flags) { m_Flags = (wxUint16)flags; } void SetVersionMadeBy(int version) { m_VersionMadeBy = (wxUint8)version; } void SetCrc(wxUint32 crc) { m_Crc = crc; } void SetCompressedSize(wxFileOffset size) { m_CompressedSize = size; } void SetKey(wxFileOffset offset) { m_Key = offset; } void SetDiskStart(int start) { m_DiskStart = (wxUint16)start; } void SetInternalAttributes(int attr) { m_InternalAttributes = (wxUint16)attr; } virtual wxZipEntry *ZipClone() const { return new wxZipEntry(*this); } void Notify(); private: wxArchiveEntry* DoClone() const { return ZipClone(); } size_t ReadLocal(wxInputStream& stream, wxMBConv& conv); size_t WriteLocal(wxOutputStream& stream, wxMBConv& conv) const; size_t ReadCentral(wxInputStream& stream, wxMBConv& conv); size_t WriteCentral(wxOutputStream& stream, wxMBConv& conv) const; size_t ReadDescriptor(wxInputStream& stream); size_t WriteDescriptor(wxOutputStream& stream, wxUint32 crc, wxFileOffset compressedSize, wxFileOffset size); wxUint8 m_SystemMadeBy; // one of enum wxZipSystem wxUint8 m_VersionMadeBy; // major * 10 + minor wxUint16 m_VersionNeeded; // ver needed to extract (20 i.e. v2.0) wxUint16 m_Flags; wxUint16 m_Method; // compression method (one of wxZipMethod) wxDateTime m_DateTime; wxUint32 m_Crc; wxFileOffset m_CompressedSize; wxFileOffset m_Size; wxString m_Name; // in internal format wxFileOffset m_Key; // the original offset for copied entries wxFileOffset m_Offset; // file offset of the entry wxString m_Comment; wxUint16 m_DiskStart; // for multidisk archives, not unsupported wxUint16 m_InternalAttributes; // bit 0 set for text files wxUint32 m_ExternalAttributes; // system specific depends on SystemMadeBy class wxZipMemory *m_Extra; class wxZipMemory *m_LocalExtra; wxZipNotifier *m_zipnotifier; class wxZipWeakLinks *m_backlink; friend class wxZipInputStream; friend class wxZipOutputStream; DECLARE_DYNAMIC_CLASS(wxZipEntry) }; ///////////////////////////////////////////////////////////////////////////// // wxZipOutputStream WX_DECLARE_LIST_WITH_DECL(wxZipEntry, wxZipEntryList_, class WXDLLIMPEXP_BASE); class WXDLLIMPEXP_BASE wxZipOutputStream : public wxArchiveOutputStream { public: wxZipOutputStream(wxOutputStream& stream, int level = -1, wxMBConv& conv = wxConvLocal); wxZipOutputStream(wxOutputStream *stream, int level = -1, wxMBConv& conv = wxConvLocal); virtual WXZIPFIX ~wxZipOutputStream(); bool PutNextEntry(wxZipEntry *entry) { return DoCreate(entry); } bool WXZIPFIX PutNextEntry(const wxString& name, const wxDateTime& dt = wxDateTime::Now(), wxFileOffset size = wxInvalidOffset); bool WXZIPFIX PutNextDirEntry(const wxString& name, const wxDateTime& dt = wxDateTime::Now()); bool WXZIPFIX CopyEntry(wxZipEntry *entry, wxZipInputStream& inputStream); bool WXZIPFIX CopyArchiveMetaData(wxZipInputStream& inputStream); void WXZIPFIX Sync(); bool WXZIPFIX CloseEntry(); bool WXZIPFIX Close(); void SetComment(const wxString& comment) { m_Comment = comment; } int GetLevel() const { return m_level; } void WXZIPFIX SetLevel(int level); protected: virtual size_t WXZIPFIX OnSysWrite(const void *buffer, size_t size); virtual wxFileOffset OnSysTell() const { return m_entrySize; } // this protected interface isn't yet finalised struct Buffer { const char *m_data; size_t m_size; }; virtual wxOutputStream* WXZIPFIX OpenCompressor(wxOutputStream& stream, wxZipEntry& entry, const Buffer bufs[]); virtual bool WXZIPFIX CloseCompressor(wxOutputStream *comp); bool IsParentSeekable() const { return m_offsetAdjustment != wxInvalidOffset; } private: void Init(int level); bool WXZIPFIX PutNextEntry(wxArchiveEntry *entry); bool WXZIPFIX CopyEntry(wxArchiveEntry *entry, wxArchiveInputStream& stream); bool WXZIPFIX CopyArchiveMetaData(wxArchiveInputStream& stream); bool IsOpened() const { return m_comp || m_pending; } bool DoCreate(wxZipEntry *entry, bool raw = false); void CreatePendingEntry(const void *buffer, size_t size); void CreatePendingEntry(); class wxStoredOutputStream *m_store; class wxZlibOutputStream2 *m_deflate; class wxZipStreamLink *m_backlink; wxZipEntryList_ m_entries; char *m_initialData; size_t m_initialSize; wxZipEntry *m_pending; bool m_raw; wxFileOffset m_headerOffset; size_t m_headerSize; wxFileOffset m_entrySize; wxUint32 m_crcAccumulator; wxOutputStream *m_comp; int m_level; wxFileOffset m_offsetAdjustment; wxString m_Comment; DECLARE_NO_COPY_CLASS(wxZipOutputStream) }; ///////////////////////////////////////////////////////////////////////////// // wxZipInputStream class WXDLLIMPEXP_BASE wxZipInputStream : public wxArchiveInputStream { public: typedef wxZipEntry entry_type; wxZipInputStream(wxInputStream& stream, wxMBConv& conv = wxConvLocal); wxZipInputStream(wxInputStream *stream, wxMBConv& conv = wxConvLocal); #if WXWIN_COMPATIBILITY_2_6 && wxUSE_FFILE wxZipInputStream(const wxString& archive, const wxString& file) : wxArchiveInputStream(OpenFile(archive), wxConvLocal) { Init(file); } #endif virtual WXZIPFIX ~wxZipInputStream(); bool OpenEntry(wxZipEntry& entry) { return DoOpen(&entry); } bool WXZIPFIX CloseEntry(); wxZipEntry *GetNextEntry(); wxString WXZIPFIX GetComment(); int WXZIPFIX GetTotalEntries(); virtual wxFileOffset GetLength() const { return m_entry.GetSize(); } protected: size_t WXZIPFIX OnSysRead(void *buffer, size_t size); wxFileOffset OnSysTell() const { return m_decomp ? m_decomp->TellI() : 0; } #if WXWIN_COMPATIBILITY_2_6 wxFileOffset WXZIPFIX OnSysSeek(wxFileOffset seek, wxSeekMode mode); #endif // this protected interface isn't yet finalised virtual wxInputStream* WXZIPFIX OpenDecompressor(wxInputStream& stream); virtual bool WXZIPFIX CloseDecompressor(wxInputStream *decomp); private: void Init(); void Init(const wxString& file); #if WXWIN_COMPATIBILITY_2_6 && wxUSE_FFILE static wxInputStream *OpenFile(const wxString& archive); #endif wxArchiveEntry *DoGetNextEntry() { return GetNextEntry(); } bool WXZIPFIX OpenEntry(wxArchiveEntry& entry); wxStreamError ReadLocal(bool readEndRec = false); wxStreamError ReadCentral(); wxUint32 ReadSignature(); bool FindEndRecord(); bool LoadEndRecord(); bool AtHeader() const { return m_headerSize == 0; } bool AfterHeader() const { return m_headerSize > 0 && !m_decomp; } bool IsOpened() const { return m_decomp != NULL; } wxZipStreamLink *MakeLink(wxZipOutputStream *out); bool DoOpen(wxZipEntry *entry = NULL, bool raw = false); bool OpenDecompressor(bool raw = false); class wxStoredInputStream *m_store; class wxZlibInputStream2 *m_inflate; class wxRawInputStream *m_rawin; wxZipEntry m_entry; bool m_raw; size_t m_headerSize; wxUint32 m_crcAccumulator; wxInputStream *m_decomp; bool m_parentSeekable; class wxZipWeakLinks *m_weaklinks; class wxZipStreamLink *m_streamlink; wxFileOffset m_offsetAdjustment; wxFileOffset m_position; wxUint32 m_signature; size_t m_TotalEntries; wxString m_Comment; friend bool wxZipOutputStream::CopyEntry( wxZipEntry *entry, wxZipInputStream& inputStream); friend bool wxZipOutputStream::CopyArchiveMetaData( wxZipInputStream& inputStream); #if WXWIN_COMPATIBILITY_2_6 bool m_allowSeeking; friend class wxArchiveFSHandler; #endif DECLARE_NO_COPY_CLASS(wxZipInputStream) }; ///////////////////////////////////////////////////////////////////////////// // Iterators #if wxUSE_STL || defined WX_TEST_ARCHIVE_ITERATOR typedef wxArchiveIterator wxZipIter; typedef wxArchiveIterator > wxZipPairIter; #endif ///////////////////////////////////////////////////////////////////////////// // wxZipClassFactory class WXDLLIMPEXP_BASE wxZipClassFactory : public wxArchiveClassFactory { public: typedef wxZipEntry entry_type; typedef wxZipInputStream instream_type; typedef wxZipOutputStream outstream_type; typedef wxZipNotifier notifier_type; #if wxUSE_STL || defined WX_TEST_ARCHIVE_ITERATOR typedef wxZipIter iter_type; typedef wxZipPairIter pairiter_type; #endif wxZipClassFactory(); wxZipEntry *NewEntry() const { return new wxZipEntry; } wxZipInputStream *NewStream(wxInputStream& stream) const { return new wxZipInputStream(stream, GetConv()); } wxZipOutputStream *NewStream(wxOutputStream& stream) const { return new wxZipOutputStream(stream, -1, GetConv()); } wxZipInputStream *NewStream(wxInputStream *stream) const { return new wxZipInputStream(stream, GetConv()); } wxZipOutputStream *NewStream(wxOutputStream *stream) const { return new wxZipOutputStream(stream, -1, GetConv()); } wxString GetInternalName(const wxString& name, wxPathFormat format = wxPATH_NATIVE) const { return wxZipEntry::GetInternalName(name, format); } const wxChar * const *GetProtocols(wxStreamProtocolType type = wxSTREAM_PROTOCOL) const; protected: wxArchiveEntry *DoNewEntry() const { return NewEntry(); } wxArchiveInputStream *DoNewStream(wxInputStream& stream) const { return NewStream(stream); } wxArchiveOutputStream *DoNewStream(wxOutputStream& stream) const { return NewStream(stream); } wxArchiveInputStream *DoNewStream(wxInputStream *stream) const { return NewStream(stream); } wxArchiveOutputStream *DoNewStream(wxOutputStream *stream) const { return NewStream(stream); } private: DECLARE_DYNAMIC_CLASS(wxZipClassFactory) }; ///////////////////////////////////////////////////////////////////////////// // wxZipEntry inlines inline bool wxZipEntry::IsText() const { return (m_InternalAttributes & TEXT_ATTR) != 0; } inline bool wxZipEntry::IsDir() const { return (m_ExternalAttributes & wxZIP_A_SUBDIR) != 0; } inline bool wxZipEntry::IsReadOnly() const { return (m_ExternalAttributes & wxZIP_A_RDONLY) != 0; } inline bool wxZipEntry::IsMadeByUnix() const { const int pattern = (1 << wxZIP_SYSTEM_OPENVMS) | (1 << wxZIP_SYSTEM_UNIX) | (1 << wxZIP_SYSTEM_ATARI_ST) | (1 << wxZIP_SYSTEM_ACORN_RISC) | (1 << wxZIP_SYSTEM_BEOS) | (1 << wxZIP_SYSTEM_TANDEM); // note: some unix zippers put madeby = dos return (m_SystemMadeBy == wxZIP_SYSTEM_MSDOS && (m_ExternalAttributes & ~0xFFFF)) || ((pattern >> m_SystemMadeBy) & 1); } inline void wxZipEntry::SetIsText(bool isText) { if (isText) m_InternalAttributes |= TEXT_ATTR; else m_InternalAttributes &= ~TEXT_ATTR; } inline void wxZipEntry::SetIsReadOnly(bool isReadOnly) { if (isReadOnly) SetMode(GetMode() & ~0222); else SetMode(GetMode() | 0200); } inline void wxZipEntry::SetName(const wxString& name, wxPathFormat format /*=wxPATH_NATIVE*/) { bool isDir; m_Name = GetInternalName(name, format, &isDir); SetIsDir(isDir); } #endif // wxUSE_ZIPSTREAM #endif // _WX_WXZIPSTREAM_H__