///////////////////////////////////////////////////////////////////////////// // Name: zipstrm.h // Purpose: interface of wxZipNotifier // Author: wxWidgets team // RCS-ID: $Id$ // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// /** @class wxZipNotifier If you need to know when a wxZipInputStream updates a wxZipEntry, you can create a notifier by deriving from this abstract base class, overriding wxZipNotifier::OnEntryUpdated. An instance of your notifier class can then be assigned to wxZipEntry objects, using wxZipEntry::SetNotifier. Setting a notifier is not usually necessary. It is used to handle certain cases when modifying an zip in a pipeline (i.e. between non-seekable streams). See '@ref overview_wxarcnoseek "Archives on non-seekable streams"'. @library{wxbase} @category{FIXME} @see @ref overview_wxarcnoseek "Archives on non-seekable streams", wxZipEntry, wxZipInputStream, wxZipOutputStream */ class wxZipNotifier { public: /** Override this to receive notifications when an wxZipEntry object changes. */ void OnEntryUpdated(wxZipEntry& entry); }; /** @class wxZipEntry Holds the meta-data for an entry in a zip. @library{wxbase} @category{FIXME} @see @ref overview_wxarc "Archive formats such as zip", wxZipInputStream, wxZipOutputStream, wxZipNotifier */ class wxZipEntry : public wxArchiveEntry { public: //@{ /** Copy constructor. */ wxZipEntry(const wxString& name = wxEmptyString); wxZipEntry(const wxZipEntry& entry); //@} /** Make a copy of this entry. */ wxZipEntry* Clone() const; //@{ /** A short comment for this entry. */ wxString GetComment(); const void SetComment(const wxString& comment); //@} //@{ /** The low 8 bits are always the DOS/Windows file attributes for this entry. The values of these attributes are given in the enumeration @c wxZipAttributes. The remaining bits can store platform specific permission bits or attributes, and their meaning depends on the value of @ref systemmadeby() SetSystemMadeBy. If IsMadeByUnix() is @true then the high 16 bits are unix mode bits. The following other accessors access these bits: @ref wxArchiveEntry::isreadonly IsReadOnly/SetIsReadOnly @ref wxArchiveEntry::isdir IsDir/SetIsDir @ref mode() Get/SetMode */ wxUint32 GetExternalAttributes(); const void SetExternalAttributes(wxUint32 attr); //@} //@{ /** The extra field from the entry's central directory record. The extra field is used to store platform or application specific data. See Pkware's document 'appnote.txt' for information on its format. */ const char* GetExtra(); const size_t GetExtraLen(); const void SetExtra(const char* extra, size_t len); //@} //@{ /** The extra field from the entry's local record. The extra field is used to store platform or application specific data. See Pkware's document 'appnote.txt' for information on its format. */ const char* GetLocalExtra(); const size_t GetLocalExtraLen(); const void SetLocalExtra(const char* extra, size_t len); //@} //@{ /** The compression method. The enumeration @c wxZipMethod lists the possible values. The default constructor sets this to wxZIP_METHOD_DEFAULT, which allows wxZipOutputStream to choose the method when writing the entry. */ int GetMethod(); const void SetMethod(int method); //@} //@{ /** Sets the DOS attributes in @ref externalattributes() GetExternalAttributes to be consistent with the @c mode given. If IsMadeByUnix() is @true then also stores @c mode in GetExternalAttributes(). Note that the default constructor sets @ref systemmadeby() GetSystemMadeBy to wxZIP_SYSTEM_MSDOS by default. So to be able to store unix permissions when creating zips, call SetSystemMadeBy(wxZIP_SYSTEM_UNIX). */ int GetMode(); const void SetMode(int mode); //@} //@{ /** The originating file-system. The default constructor sets this to wxZIP_SYSTEM_MSDOS. Set it to wxZIP_SYSTEM_UNIX in order to be able to store unix permissions using @ref mode() SetMode. */ int GetSystemMadeBy(); const void SetSystemMadeBy(int system); //@} /** The compressed size of this entry in bytes. */ off_t GetCompressedSize() const; /** CRC32 for this entry's data. */ wxUint32 GetCrc() const; /** Returns a combination of the bits flags in the enumeration @c wxZipFlags. */ int GetFlags() const; //@{ /** A static member that translates a filename into the internal format used within the archive. If the third parameter is provided, the bool pointed to is set to indicate whether the name looks like a directory name (i.e. has a trailing path separator). @see @ref overview_wxarcbyname "Looking up an archive entry by name" */ wxString GetInternalName(); const wxString GetInternalName(const wxString& name, wxPathFormat format = wxPATH_NATIVE, bool* pIsDir = NULL); //@} /** Returns @true if @ref systemmadeby() GetSystemMadeBy is a flavour of unix. */ bool IsMadeByUnix() const; //@{ /** Indicates that this entry's data is text in an 8-bit encoding. */ bool IsText(); const void SetIsText(bool isText = true); //@} //@{ /** Sets the notifier() for this entry. Whenever the wxZipInputStream updates this entry, it will then invoke the associated notifier's wxZipNotifier::OnEntryUpdated method. Setting a notifier is not usually necessary. It is used to handle certain cases when modifying an zip in a pipeline (i.e. between non-seekable streams). @see @ref overview_wxarcnoseek "Archives on non-seekable streams", wxZipNotifier */ void SetNotifier(wxZipNotifier& notifier); void UnsetNotifier(); //@} /** Assignment operator. */ wxZipEntry& operator operator=(const wxZipEntry& entry); }; /** @class wxZipInputStream Input stream for reading zip files. wxZipInputStream::GetNextEntry returns an wxZipEntry object containing the meta-data for the next entry in the zip (and gives away ownership). Reading from the wxZipInputStream then returns the entry's data. Eof() becomes @true after an attempt has been made to read past the end of the entry's data. When there are no more entries, GetNextEntry() returns @NULL and sets Eof(). Note that in general zip entries are not seekable, and wxZipInputStream::SeekI() always returns wxInvalidOffset. @library{wxbase} @category{streams} @see @ref overview_wxarc "Archive formats such as zip", wxZipEntry, wxZipOutputStream */ class wxZipInputStream : public wxArchiveInputStream { public: //@{ /** Compatibility constructor (requires WXWIN_COMPATIBILITY_2_6). When this constructor is used, an emulation of seeking is switched on for compatibility with previous versions. Note however, that it is deprecated. */ wxZipInputStream(wxInputStream& stream, wxMBConv& conv = wxConvLocal); wxZipInputStream(wxInputStream* stream, wxMBConv& conv = wxConvLocal); wxZipInputStream(const wxString& archive, const wxString& file); //@} /** Closes the current entry. On a non-seekable stream reads to the end of the current entry first. */ bool CloseEntry(); /** Returns the zip comment. This is stored at the end of the zip, therefore when reading a zip from a non-seekable stream, it returns the empty string until the end of the zip has been reached, i.e. when GetNextEntry() returns @NULL. */ wxString GetComment(); /** Closes the current entry if one is open, then reads the meta-data for the next entry and returns it in a wxZipEntry object, giving away ownership. The stream is then open and can be read. */ wxZipEntry* GetNextEntry(); /** For a zip on a seekable stream returns the total number of entries in the zip. For zips on non-seekable streams returns the number of entries returned so far by GetNextEntry(). */ int GetTotalEntries(); /** Closes the current entry if one is open, then opens the entry specified by the @a entry object. @a entry should be from the same zip file, and the zip should be on a seekable stream. */ bool OpenEntry(wxZipEntry& entry); }; /** @class wxZipClassFactory Class factory for the zip archive format. See the base class for details. @library{wxbase} @category{FIXME} @see @ref overview_wxarc "Archive formats such as zip", @ref overview_wxarcgeneric "Generic archive programming", wxZipEntry, wxZipInputStream, wxZipOutputStream */ class wxZipClassFactory : public wxArchiveClassFactory { public: }; /** @class wxZipOutputStream Output stream for writing zip files. wxZipOutputStream::PutNextEntry is used to create a new entry in the output zip, then the entry's data is written to the wxZipOutputStream. Another call to PutNextEntry() closes the current entry and begins the next. @library{wxbase} @category{streams} @see @ref overview_wxarc "Archive formats such as zip", wxZipEntry, wxZipInputStream */ class wxZipOutputStream : public wxArchiveOutputStream { public: //@{ /** Constructor. @c level is the compression level to use. It can be a value between 0 and 9 or -1 to use the default value which currently is equivalent to 6. If the parent stream is passed as a pointer then the new filter stream takes ownership of it. If it is passed by reference then it does not. In a Unicode build the third parameter @c conv is used to translate the filename and comment fields to an 8-bit encoding. It has no effect on the stream's data. */ wxZipOutputStream(wxOutputStream& stream, int level = -1, wxMBConv& conv = wxConvLocal); wxZipOutputStream(wxOutputStream* stream, int level = -1, wxMBConv& conv = wxConvLocal); //@} /** The destructor calls Close() to finish writing the zip if it has not been called already. */ ~wxZipOutputStream(); /** Finishes writing the zip, returning @true if successful. Called by the destructor if not called explicitly. */ bool Close(); /** Close the current entry. It is called implicitly whenever another new entry is created with CopyEntry() or PutNextEntry(), or when the zip is closed. */ bool CloseEntry(); /** Transfers the zip comment from the wxZipInputStream to this output stream. */ bool CopyArchiveMetaData(wxZipInputStream& inputStream); /** Takes ownership of @c entry and uses it to create a new entry in the zip. @c entry is then opened in @c inputStream and its contents copied to this stream. CopyEntry() is much more efficient than transferring the data using Read() and Write() since it will copy them without decompressing and recompressing them. For zips on seekable streams, @c entry must be from the same zip file as @c stream. For non-seekable streams, @c entry must also be the last thing read from @c inputStream. */ bool CopyEntry(wxZipEntry* entry, wxZipInputStream& inputStream); //@{ /** Set the compression level that will be used the next time an entry is created. It can be a value between 0 and 9 or -1 to use the default value which currently is equivalent to 6. */ int GetLevel(); const void SetLevel(int level); //@} /** ) Create a new directory entry (see wxArchiveEntry::IsDir) with the given name and timestamp. PutNextEntry() can also be used to create directory entries, by supplying a name with a trailing path separator. */ bool PutNextDirEntry(const wxString& name); //@{ /** , @b off_t@e size = wxInvalidOffset) Create a new entry with the given name, timestamp and size. */ bool PutNextEntry(wxZipEntry* entry); bool PutNextEntry(const wxString& name); //@} /** Sets a comment for the zip as a whole. It is written at the end of the zip. */ void SetComment(const wxString& comment); };