561 lines
19 KiB
C++
561 lines
19 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/zipstrm.h
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// Purpose: Streams for Zip files
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// Author: Mike Wetherell
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// Copyright: (c) Mike Wetherell
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_WXZIPSTREAM_H__
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#define _WX_WXZIPSTREAM_H__
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#include "wx/defs.h"
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#if wxUSE_ZIPSTREAM
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#include "wx/archive.h"
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#include "wx/filename.h"
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// some methods from wxZipInputStream and wxZipOutputStream stream do not get
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// exported/imported when compiled with Mingw versions before 3.4.2. So they
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// are imported/exported individually as a workaround
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#if (defined(__GNUWIN32__) || defined(__MINGW32__)) \
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&& (!defined __GNUC__ \
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|| !defined __GNUC_MINOR__ \
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|| !defined __GNUC_PATCHLEVEL__ \
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|| __GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ < 30402)
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#define WXZIPFIX WXDLLIMPEXP_BASE
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#else
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#define WXZIPFIX
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#endif
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/////////////////////////////////////////////////////////////////////////////
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// constants
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// Compression Method, only 0 (store) and 8 (deflate) are supported here
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//
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enum wxZipMethod
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{
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wxZIP_METHOD_STORE,
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wxZIP_METHOD_SHRINK,
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wxZIP_METHOD_REDUCE1,
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wxZIP_METHOD_REDUCE2,
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wxZIP_METHOD_REDUCE3,
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wxZIP_METHOD_REDUCE4,
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wxZIP_METHOD_IMPLODE,
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wxZIP_METHOD_TOKENIZE,
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wxZIP_METHOD_DEFLATE,
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wxZIP_METHOD_DEFLATE64,
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wxZIP_METHOD_BZIP2 = 12,
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wxZIP_METHOD_DEFAULT = 0xffff
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};
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// Originating File-System.
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//
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// These are Pkware's values. Note that Info-zip disagree on some of them,
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// most notably NTFS.
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//
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enum wxZipSystem
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{
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wxZIP_SYSTEM_MSDOS,
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wxZIP_SYSTEM_AMIGA,
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wxZIP_SYSTEM_OPENVMS,
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wxZIP_SYSTEM_UNIX,
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wxZIP_SYSTEM_VM_CMS,
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wxZIP_SYSTEM_ATARI_ST,
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wxZIP_SYSTEM_OS2_HPFS,
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wxZIP_SYSTEM_MACINTOSH,
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wxZIP_SYSTEM_Z_SYSTEM,
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wxZIP_SYSTEM_CPM,
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wxZIP_SYSTEM_WINDOWS_NTFS,
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wxZIP_SYSTEM_MVS,
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wxZIP_SYSTEM_VSE,
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wxZIP_SYSTEM_ACORN_RISC,
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wxZIP_SYSTEM_VFAT,
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wxZIP_SYSTEM_ALTERNATE_MVS,
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wxZIP_SYSTEM_BEOS,
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wxZIP_SYSTEM_TANDEM,
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wxZIP_SYSTEM_OS_400
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};
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// Dos/Win file attributes
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//
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enum wxZipAttributes
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{
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wxZIP_A_RDONLY = 0x01,
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wxZIP_A_HIDDEN = 0x02,
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wxZIP_A_SYSTEM = 0x04,
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wxZIP_A_SUBDIR = 0x10,
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wxZIP_A_ARCH = 0x20,
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wxZIP_A_MASK = 0x37
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};
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// Values for the flags field in the zip headers
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//
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enum wxZipFlags
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{
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wxZIP_ENCRYPTED = 0x0001,
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wxZIP_DEFLATE_NORMAL = 0x0000, // normal compression
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wxZIP_DEFLATE_EXTRA = 0x0002, // extra compression
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wxZIP_DEFLATE_FAST = 0x0004, // fast compression
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wxZIP_DEFLATE_SUPERFAST = 0x0006, // superfast compression
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wxZIP_DEFLATE_MASK = 0x0006,
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wxZIP_SUMS_FOLLOW = 0x0008, // crc and sizes come after the data
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wxZIP_ENHANCED = 0x0010,
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wxZIP_PATCH = 0x0020,
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wxZIP_STRONG_ENC = 0x0040,
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wxZIP_LANG_ENC_UTF8 = 0x0800, // filename and comment are UTF8
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wxZIP_UNUSED = 0x0F80,
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wxZIP_RESERVED = 0xF000
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};
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// Forward decls
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//
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class WXDLLIMPEXP_FWD_BASE wxZipEntry;
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class WXDLLIMPEXP_FWD_BASE wxZipInputStream;
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/////////////////////////////////////////////////////////////////////////////
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// wxZipNotifier
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class WXDLLIMPEXP_BASE wxZipNotifier
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{
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public:
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virtual ~wxZipNotifier() { }
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virtual void OnEntryUpdated(wxZipEntry& entry) = 0;
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};
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/////////////////////////////////////////////////////////////////////////////
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// Zip Entry - holds the meta data for a file in the zip
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class WXDLLIMPEXP_BASE wxZipEntry : public wxArchiveEntry
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{
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public:
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wxZipEntry(const wxString& name = wxEmptyString,
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const wxDateTime& dt = wxDateTime::Now(),
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wxFileOffset size = wxInvalidOffset);
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virtual ~wxZipEntry();
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wxZipEntry(const wxZipEntry& entry);
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wxZipEntry& operator=(const wxZipEntry& entry);
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// Get accessors
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wxDateTime GetDateTime() const wxOVERRIDE { return m_DateTime; }
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wxFileOffset GetSize() const wxOVERRIDE { return m_Size; }
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wxFileOffset GetOffset() const wxOVERRIDE { return m_Offset; }
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wxString GetInternalName() const wxOVERRIDE { return m_Name; }
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int GetMethod() const { return m_Method; }
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int GetFlags() const { return m_Flags; }
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wxUint32 GetCrc() const { return m_Crc; }
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wxFileOffset GetCompressedSize() const { return m_CompressedSize; }
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int GetSystemMadeBy() const { return m_SystemMadeBy; }
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wxString GetComment() const { return m_Comment; }
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wxUint32 GetExternalAttributes() const { return m_ExternalAttributes; }
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wxPathFormat GetInternalFormat() const wxOVERRIDE { return wxPATH_UNIX; }
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int GetMode() const;
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const char *GetLocalExtra() const;
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size_t GetLocalExtraLen() const;
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const char *GetExtra() const;
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size_t GetExtraLen() const;
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wxString GetName(wxPathFormat format = wxPATH_NATIVE) const wxOVERRIDE;
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// is accessors
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inline bool IsDir() const wxOVERRIDE;
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inline bool IsText() const;
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inline bool IsReadOnly() const wxOVERRIDE;
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inline bool IsMadeByUnix() const;
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// set accessors
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void SetDateTime(const wxDateTime& dt) wxOVERRIDE { m_DateTime = dt; }
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void SetSize(wxFileOffset size) wxOVERRIDE { m_Size = size; }
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void SetMethod(int method) { m_Method = (wxUint16)method; }
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void SetComment(const wxString& comment) { m_Comment = comment; }
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void SetExternalAttributes(wxUint32 attr ) { m_ExternalAttributes = attr; }
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void SetSystemMadeBy(int system);
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void SetMode(int mode);
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void SetExtra(const char *extra, size_t len);
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void SetLocalExtra(const char *extra, size_t len);
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inline void SetName(const wxString& name,
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wxPathFormat format = wxPATH_NATIVE) wxOVERRIDE;
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static wxString GetInternalName(const wxString& name,
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wxPathFormat format = wxPATH_NATIVE,
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bool *pIsDir = NULL);
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// set is accessors
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void SetIsDir(bool isDir = true) wxOVERRIDE;
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inline void SetIsReadOnly(bool isReadOnly = true) wxOVERRIDE;
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inline void SetIsText(bool isText = true);
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wxZipEntry *Clone() const { return ZipClone(); }
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void SetNotifier(wxZipNotifier& notifier);
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void UnsetNotifier() wxOVERRIDE;
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protected:
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// Internal attributes
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enum { TEXT_ATTR = 1 };
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// protected Get accessors
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int GetVersionNeeded() const { return m_VersionNeeded; }
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wxFileOffset GetKey() const { return m_Key; }
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int GetVersionMadeBy() const { return m_VersionMadeBy; }
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int GetDiskStart() const { return m_DiskStart; }
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int GetInternalAttributes() const { return m_InternalAttributes; }
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void SetVersionNeeded(int version) { m_VersionNeeded = (wxUint16)version; }
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void SetOffset(wxFileOffset offset) wxOVERRIDE { m_Offset = offset; }
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void SetFlags(int flags) { m_Flags = (wxUint16)flags; }
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void SetVersionMadeBy(int version) { m_VersionMadeBy = (wxUint8)version; }
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void SetCrc(wxUint32 crc) { m_Crc = crc; }
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void SetCompressedSize(wxFileOffset size) { m_CompressedSize = size; }
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void SetKey(wxFileOffset offset) { m_Key = offset; }
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void SetDiskStart(int start) { m_DiskStart = (wxUint16)start; }
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void SetInternalAttributes(int attr) { m_InternalAttributes = (wxUint16)attr; }
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virtual wxZipEntry *ZipClone() const { return new wxZipEntry(*this); }
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void Notify();
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private:
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wxArchiveEntry* DoClone() const wxOVERRIDE { return ZipClone(); }
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size_t ReadLocal(wxInputStream& stream, wxMBConv& conv);
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size_t WriteLocal(wxOutputStream& stream, wxMBConv& conv) const;
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size_t ReadCentral(wxInputStream& stream, wxMBConv& conv);
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size_t WriteCentral(wxOutputStream& stream, wxMBConv& conv) const;
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size_t ReadDescriptor(wxInputStream& stream);
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size_t WriteDescriptor(wxOutputStream& stream, wxUint32 crc,
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wxFileOffset compressedSize, wxFileOffset size);
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bool LoadExtraInfo(const char* extraData, wxUint16 extraLen, bool localInfo);
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wxUint8 m_SystemMadeBy; // one of enum wxZipSystem
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wxUint8 m_VersionMadeBy; // major * 10 + minor
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wxUint16 m_VersionNeeded; // ver needed to extract (20 i.e. v2.0)
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wxUint16 m_Flags;
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wxUint16 m_Method; // compression method (one of wxZipMethod)
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wxDateTime m_DateTime;
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wxUint32 m_Crc;
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wxFileOffset m_CompressedSize;
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wxFileOffset m_Size;
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wxString m_Name; // in internal format
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wxFileOffset m_Key; // the original offset for copied entries
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wxFileOffset m_Offset; // file offset of the entry
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wxString m_Comment;
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wxUint16 m_DiskStart; // for multidisk archives, not unsupported
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wxUint16 m_InternalAttributes; // bit 0 set for text files
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wxUint32 m_ExternalAttributes; // system specific depends on SystemMadeBy
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class wxZipMemory *m_Extra;
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class wxZipMemory *m_LocalExtra;
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wxZipNotifier *m_zipnotifier;
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class wxZipWeakLinks *m_backlink;
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friend class wxZipInputStream;
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friend class wxZipOutputStream;
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wxDECLARE_DYNAMIC_CLASS(wxZipEntry);
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};
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/////////////////////////////////////////////////////////////////////////////
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// wxZipOutputStream
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WX_DECLARE_LIST_WITH_DECL(wxZipEntry, wxZipEntryList_, class WXDLLIMPEXP_BASE);
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class WXDLLIMPEXP_BASE wxZipOutputStream : public wxArchiveOutputStream
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{
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public:
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wxZipOutputStream(wxOutputStream& stream,
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int level = -1,
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wxMBConv& conv = wxConvLocal);
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wxZipOutputStream(wxOutputStream *stream,
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int level = -1,
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wxMBConv& conv = wxConvLocal);
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virtual WXZIPFIX ~wxZipOutputStream();
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bool PutNextEntry(wxZipEntry *entry) { return DoCreate(entry); }
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bool WXZIPFIX PutNextEntry(const wxString& name,
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const wxDateTime& dt = wxDateTime::Now(),
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wxFileOffset size = wxInvalidOffset) wxOVERRIDE;
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bool WXZIPFIX PutNextDirEntry(const wxString& name,
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const wxDateTime& dt = wxDateTime::Now()) wxOVERRIDE;
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bool WXZIPFIX CopyEntry(wxZipEntry *entry, wxZipInputStream& inputStream);
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bool WXZIPFIX CopyArchiveMetaData(wxZipInputStream& inputStream);
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void WXZIPFIX Sync() wxOVERRIDE;
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bool WXZIPFIX CloseEntry() wxOVERRIDE;
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bool WXZIPFIX Close() wxOVERRIDE;
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void SetComment(const wxString& comment) { m_Comment = comment; }
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int GetLevel() const { return m_level; }
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void WXZIPFIX SetLevel(int level);
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protected:
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virtual size_t WXZIPFIX OnSysWrite(const void *buffer, size_t size) wxOVERRIDE;
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virtual wxFileOffset OnSysTell() const wxOVERRIDE { return m_entrySize; }
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// this protected interface isn't yet finalised
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struct Buffer { const char *m_data; size_t m_size; };
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virtual wxOutputStream* WXZIPFIX OpenCompressor(wxOutputStream& stream,
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wxZipEntry& entry,
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const Buffer bufs[]);
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virtual bool WXZIPFIX CloseCompressor(wxOutputStream *comp);
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bool IsParentSeekable() const
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{ return m_offsetAdjustment != wxInvalidOffset; }
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private:
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void Init(int level);
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bool WXZIPFIX PutNextEntry(wxArchiveEntry *entry) wxOVERRIDE;
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bool WXZIPFIX CopyEntry(wxArchiveEntry *entry, wxArchiveInputStream& stream) wxOVERRIDE;
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bool WXZIPFIX CopyArchiveMetaData(wxArchiveInputStream& stream) wxOVERRIDE;
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bool IsOpened() const { return m_comp || m_pending; }
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bool DoCreate(wxZipEntry *entry, bool raw = false);
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void CreatePendingEntry(const void *buffer, size_t size);
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void CreatePendingEntry();
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class wxStoredOutputStream *m_store;
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class wxZlibOutputStream2 *m_deflate;
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class wxZipStreamLink *m_backlink;
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wxZipEntryList_ m_entries;
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char *m_initialData;
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size_t m_initialSize;
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wxZipEntry *m_pending;
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bool m_raw;
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wxFileOffset m_headerOffset;
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size_t m_headerSize;
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wxFileOffset m_entrySize;
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wxUint32 m_crcAccumulator;
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wxOutputStream *m_comp;
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int m_level;
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wxFileOffset m_offsetAdjustment;
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wxString m_Comment;
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bool m_endrecWritten;
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wxDECLARE_NO_COPY_CLASS(wxZipOutputStream);
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};
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/////////////////////////////////////////////////////////////////////////////
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// wxZipInputStream
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class WXDLLIMPEXP_BASE wxZipInputStream : public wxArchiveInputStream
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{
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public:
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typedef wxZipEntry entry_type;
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wxZipInputStream(wxInputStream& stream, wxMBConv& conv = wxConvLocal);
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wxZipInputStream(wxInputStream *stream, wxMBConv& conv = wxConvLocal);
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virtual WXZIPFIX ~wxZipInputStream();
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bool OpenEntry(wxZipEntry& entry) { return DoOpen(&entry); }
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bool WXZIPFIX CloseEntry() wxOVERRIDE;
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wxZipEntry *GetNextEntry();
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wxString WXZIPFIX GetComment();
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int WXZIPFIX GetTotalEntries();
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virtual wxFileOffset GetLength() const wxOVERRIDE { return m_entry.GetSize(); }
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protected:
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size_t WXZIPFIX OnSysRead(void *buffer, size_t size) wxOVERRIDE;
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wxFileOffset OnSysTell() const wxOVERRIDE { return m_decomp ? m_decomp->TellI() : 0; }
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// this protected interface isn't yet finalised
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virtual wxInputStream* WXZIPFIX OpenDecompressor(wxInputStream& stream);
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virtual bool WXZIPFIX CloseDecompressor(wxInputStream *decomp);
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private:
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void Init();
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void Init(const wxString& file);
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wxArchiveEntry *DoGetNextEntry() wxOVERRIDE { return GetNextEntry(); }
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bool WXZIPFIX OpenEntry(wxArchiveEntry& entry) wxOVERRIDE;
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wxStreamError ReadLocal(bool readEndRec = false);
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wxStreamError ReadCentral();
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wxUint32 ReadSignature();
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bool FindEndRecord();
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bool LoadEndRecord();
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bool AtHeader() const { return m_headerSize == 0; }
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bool AfterHeader() const { return m_headerSize > 0 && !m_decomp; }
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bool IsOpened() const { return m_decomp != NULL; }
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wxZipStreamLink *MakeLink(wxZipOutputStream *out);
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bool DoOpen(wxZipEntry *entry = NULL, bool raw = false);
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bool OpenDecompressor(bool raw = false);
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class wxStoredInputStream *m_store;
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class wxZlibInputStream2 *m_inflate;
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class wxRawInputStream *m_rawin;
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wxZipEntry m_entry;
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bool m_raw;
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size_t m_headerSize;
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wxUint32 m_crcAccumulator;
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wxInputStream *m_decomp;
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bool m_parentSeekable;
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class wxZipWeakLinks *m_weaklinks;
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class wxZipStreamLink *m_streamlink;
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wxFileOffset m_offsetAdjustment;
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wxFileOffset m_position;
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wxUint32 m_signature;
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size_t m_TotalEntries;
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wxString m_Comment;
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friend bool wxZipOutputStream::CopyEntry(
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wxZipEntry *entry, wxZipInputStream& inputStream);
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friend bool wxZipOutputStream::CopyArchiveMetaData(
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wxZipInputStream& inputStream);
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wxDECLARE_NO_COPY_CLASS(wxZipInputStream);
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};
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/////////////////////////////////////////////////////////////////////////////
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// Iterators
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#if wxUSE_STL || defined WX_TEST_ARCHIVE_ITERATOR
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typedef wxArchiveIterator<wxZipInputStream> wxZipIter;
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typedef wxArchiveIterator<wxZipInputStream,
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std::pair<wxString, wxZipEntry*> > wxZipPairIter;
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#endif
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/////////////////////////////////////////////////////////////////////////////
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// wxZipClassFactory
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class WXDLLIMPEXP_BASE wxZipClassFactory : public wxArchiveClassFactory
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{
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public:
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typedef wxZipEntry entry_type;
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typedef wxZipInputStream instream_type;
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typedef wxZipOutputStream outstream_type;
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typedef wxZipNotifier notifier_type;
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#if wxUSE_STL || defined WX_TEST_ARCHIVE_ITERATOR
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typedef wxZipIter iter_type;
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typedef wxZipPairIter pairiter_type;
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#endif
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wxZipClassFactory();
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wxZipEntry *NewEntry() const
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{ return new wxZipEntry; }
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wxZipInputStream *NewStream(wxInputStream& stream) const
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{ return new wxZipInputStream(stream, GetConv()); }
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wxZipOutputStream *NewStream(wxOutputStream& stream) const
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{ return new wxZipOutputStream(stream, -1, GetConv()); }
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wxZipInputStream *NewStream(wxInputStream *stream) const
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{ return new wxZipInputStream(stream, GetConv()); }
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wxZipOutputStream *NewStream(wxOutputStream *stream) const
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{ return new wxZipOutputStream(stream, -1, GetConv()); }
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wxString GetInternalName(const wxString& name,
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wxPathFormat format = wxPATH_NATIVE) const wxOVERRIDE
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{ return wxZipEntry::GetInternalName(name, format); }
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const wxChar * const *GetProtocols(wxStreamProtocolType type
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= wxSTREAM_PROTOCOL) const wxOVERRIDE;
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protected:
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wxArchiveEntry *DoNewEntry() const wxOVERRIDE
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{ return NewEntry(); }
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wxArchiveInputStream *DoNewStream(wxInputStream& stream) const wxOVERRIDE
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{ return NewStream(stream); }
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wxArchiveOutputStream *DoNewStream(wxOutputStream& stream) const wxOVERRIDE
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{ return NewStream(stream); }
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wxArchiveInputStream *DoNewStream(wxInputStream *stream) const wxOVERRIDE
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{ return NewStream(stream); }
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wxArchiveOutputStream *DoNewStream(wxOutputStream *stream) const wxOVERRIDE
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{ return NewStream(stream); }
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private:
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wxDECLARE_DYNAMIC_CLASS(wxZipClassFactory);
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};
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/////////////////////////////////////////////////////////////////////////////
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// wxZipEntry inlines
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inline bool wxZipEntry::IsText() const
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{
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return (m_InternalAttributes & TEXT_ATTR) != 0;
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}
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inline bool wxZipEntry::IsDir() const
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{
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return (m_ExternalAttributes & wxZIP_A_SUBDIR) != 0;
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}
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inline bool wxZipEntry::IsReadOnly() const
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{
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return (m_ExternalAttributes & wxZIP_A_RDONLY) != 0;
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}
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inline bool wxZipEntry::IsMadeByUnix() const
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{
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const int pattern =
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(1 << wxZIP_SYSTEM_OPENVMS) |
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(1 << wxZIP_SYSTEM_UNIX) |
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(1 << wxZIP_SYSTEM_ATARI_ST) |
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(1 << wxZIP_SYSTEM_ACORN_RISC) |
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(1 << wxZIP_SYSTEM_BEOS) | (1 << wxZIP_SYSTEM_TANDEM);
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// note: some unix zippers put madeby = dos
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return (m_SystemMadeBy == wxZIP_SYSTEM_MSDOS
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&& (m_ExternalAttributes & ~0xFFFF))
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|| ((pattern >> m_SystemMadeBy) & 1);
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}
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inline void wxZipEntry::SetIsText(bool isText)
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{
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if (isText)
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m_InternalAttributes |= TEXT_ATTR;
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else
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m_InternalAttributes &= ~TEXT_ATTR;
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}
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inline void wxZipEntry::SetIsReadOnly(bool isReadOnly)
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{
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if (isReadOnly)
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SetMode(GetMode() & ~0222);
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else
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SetMode(GetMode() | 0200);
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}
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inline void wxZipEntry::SetName(const wxString& name,
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wxPathFormat format /*=wxPATH_NATIVE*/)
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{
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bool isDir;
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m_Name = GetInternalName(name, format, &isDir);
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SetIsDir(isDir);
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}
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#endif // wxUSE_ZIPSTREAM
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#endif // _WX_WXZIPSTREAM_H__
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