/////////////////////////////////////////////////////////////////////////////
// Name: archive.h
-// Purpose: interface of wxArchiveInputStream
+// Purpose: interface of wxArchive* classes
// Author: wxWidgets team
// RCS-ID: $Id$
// Licence: wxWindows license
An abstract base class which serves as a common interface to
archive input streams such as wxZipInputStream.
- wxArchiveInputStream::GetNextEntry returns an
- wxArchiveEntry object containing the meta-data
- for the next entry in the archive (and gives away ownership). Reading from
- the wxArchiveInputStream 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.
+ wxArchiveInputStream::GetNextEntry returns an wxArchiveEntry object containing
+ the meta-data for the next entry in the archive (and gives away ownership).
+
+ Reading from the wxArchiveInputStream 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().
@library{wxbase}
- @category{FIXME}
+ @category{archive}
- @see @ref overview_wxarc "Archive formats such as zip", wxArchiveEntry,
- wxArchiveOutputStream
+ @see @ref overview_archive, wxArchiveEntry, wxArchiveOutputStream
*/
class wxArchiveInputStream : public wxFilterInputStream
{
/**
Closes the current entry if one is open, then reads the meta-data for
- the next entry and returns it in a wxArchiveEntry
- object, giving away ownership. Reading this wxArchiveInputStream then
- returns the entry's data.
+ the next entry and returns it in a wxArchiveEntry object, giving away
+ ownership. Reading this wxArchiveInputStream then returns the entry's data.
*/
wxArchiveEntry* GetNextEntry();
/**
Closes the current entry if one is open, then opens the entry specified
by the wxArchiveEntry object.
- @a entry must be from the same archive file that this
- wxArchiveInputStream is reading, and it must be reading it from a
- seekable stream.
+
+ @a entry must be from the same archive file that this wxArchiveInputStream
+ is reading, and it must be reading it from a seekable stream.
*/
bool OpenEntry(wxArchiveEntry& entry);
};
An abstract base class which serves as a common interface to
archive output streams such as wxZipOutputStream.
- wxArchiveOutputStream::PutNextEntry is used
- to create a new entry in the output archive, then the entry's data is
- written to the wxArchiveOutputStream. Another call to PutNextEntry()
- closes the current entry and begins the next.
+ wxArchiveOutputStream::PutNextEntry is used to create a new entry in the
+ output archive, then the entry's data is written to the wxArchiveOutputStream.
+ Another call to PutNextEntry() closes the current entry and begins the next.
@library{wxbase}
- @category{FIXME}
+ @category{archive}
- @see @ref overview_wxarc "Archive formats such as zip", wxArchiveEntry,
- wxArchiveInputStream
+ @see @ref overview_archive, wxArchiveEntry, wxArchiveInputStream
*/
class wxArchiveOutputStream : public wxFilterOutputStream
{
public:
/**
- Calls Close() if it has not already
- been called.
+ Calls Close() if it has not already been called.
*/
~wxArchiveOutputStream();
bool Close();
/**
- Close the current entry. It is called implicitly whenever another new
- entry is created with CopyEntry()
- or PutNextEntry(), or
- when the archive is closed.
+ Close the current entry.
+ It is called implicitly whenever another new entry is created with CopyEntry()
+ or PutNextEntry(), or when the archive is closed.
*/
bool CloseEntry();
/**
Some archive formats have additional meta-data that applies to the archive
- as a whole. For example in the case of zip there is a comment, which
- is stored at the end of the zip file. CopyArchiveMetaData() can be used
- to transfer such information when writing a modified copy of an archive.
+ as a whole.
+ For example in the case of zip there is a comment, which is stored at the end
+ of the zip file. CopyArchiveMetaData() can be used to transfer such information
+ when writing a modified copy of an archive.
+
Since the position of the meta-data can vary between the various archive
formats, it is best to call CopyArchiveMetaData() before transferring
- the entries. The wxArchiveOutputStream
- will then hold on to the meta-data and write it at the correct point in
- the output file.
+ the entries. The wxArchiveOutputStream will then hold on to the meta-data
+ and write it at the correct point in the output file.
+
When the input archive is being read from a non-seekable stream, the
meta-data may not be available when CopyArchiveMetaData() is called,
in which case the two streams set up a link and transfer the data
Takes ownership of @a entry and uses it to create a new entry in the
archive. @a entry is then opened in the input stream @e stream
and its contents copied to this stream.
+
For archive types which compress entry data, CopyEntry() is likely to be
much more efficient than transferring the data using Read() and Write()
since it will copy them without decompressing and recompressing them.
+
@a entry must be from the same archive file that @a stream is
accessing. For non-seekable streams, @a entry must also be the last
thing read from @e stream.
wxArchiveInputStream& stream);
/**
- )
- 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.
+ 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)
+ Takes ownership of entry and uses it to create a new entry in the archive.
+ The entry's data can then be written by writing to this wxArchiveOutputStream.
+ */
+ bool PutNextEntry(wxArchiveEntry* entry);
+
+ /**
Create a new entry with the given name, timestamp and size. The entry's
data can then be written by writing to this wxArchiveOutputStream.
*/
- bool PutNextEntry(wxArchiveEntry* entry);
- bool PutNextEntry(const wxString& name);
- //@}
+ bool PutNextEntry(const wxString& name, const wxDateTime& dt = wxDateTime::Now(),
+ off_t size = wxInvalidOffset);
};
These hold the meta-data (filename, timestamp, etc.), for entries
in archive files such as zips and tars.
+ <b>About non-seekable streams</b>: this information applies only when reading
+ archives from non-seekable streams. When the stream is seekable GetNextEntry()
+ returns a fully populated wxArchiveEntry.
+ See @ref overview_archive_noseek for more information.
+
+ For generic programming, when the worst case must be assumed, you can rely on
+ all the fields of wxArchiveEntry being fully populated when
+ wxArchiveInputStream::GetNextEntry() returns, with the the following exceptions:
+
+ @li GetSize(): guaranteed to be available after the entry has been read to Eof(),
+ or CloseEntry() has been called;
+ @li IsReadOnly(): guaranteed to be available after the end of the archive has
+ been reached, i.e. after GetNextEntry() returns NULL and Eof() is true.
+
@library{wxbase}
- @category{FIXME}
+ @category{archive}
- @see @ref overview_wxarc "Archive formats such as zip", @ref
- overview_wxarcgeneric "Generic archive programming", wxArchiveInputStream, wxArchiveOutputStream, wxArchiveNotifier
+ @see @ref overview_archive, @ref overview_archive_generic,
+ wxArchiveInputStream, wxArchiveOutputStream, wxArchiveNotifier
*/
class wxArchiveEntry : public wxObject
{
*/
wxArchiveEntry* Clone() const;
- //@{
/**
- The entry's timestamp.
+ Gets the entry's timestamp.
*/
wxDateTime GetDateTime();
+
+ /**
+ Sets the entry's timestamp.
+ */
const void SetDateTime(const wxDateTime& dt);
- //@}
- //@{
/**
- The entry's name, by default in the native format. The name can include
- directory components, i.e. it can be a full path.
- If this is a directory entry, (i.e. if IsDir()
- is @true) then GetName() returns the name with a trailing path separator.
- Similarly, setting a name with a trailing path separator sets IsDir().
+ Returns the entry's name, by default in the native format.
+ The name can include directory components, i.e. it can be a full path.
+
+ If this is a directory entry, (i.e. if IsDir() is @true) then the
+ returned string is the name with a trailing path separator.
*/
wxString GetName(wxPathFormat format = wxPATH_NATIVE);
+
+ /**
+ Sets the entry's name.
+ Setting a name with a trailing path separator sets IsDir().
+
+ @see GetName()
+ */
const void SetName(const wxString& name,
wxPathFormat format = wxPATH_NATIVE);
- //@}
- //@{
/**
- The size of the entry's data in bytes.
+ Returns the size of the entry's data in bytes.
*/
off_t GetSize();
+
+ /**
+ Sets the size of the entry's data in bytes.
+ */
const void SetSize(off_t size);
- //@}
/**
Returns the path format used internally within the archive to store
Returns the entry's filename in the internal format used within the
archive. The name can include directory components, i.e. it can be a
full path.
+
The names of directory entries are returned without any trailing path
separator. This gives a canonical name that can be used in comparisons.
- @see @ref overview_wxarcbyname "Looking up an archive entry by name"
+ @see @ref overview_archive_byname
*/
wxString GetInternalName() const;
*/
off_t GetOffset() const;
- //@{
/**
- True if this is a directory entry.
+ Returns @true if this is a directory entry.
+
Directory entries are entries with no data, which are used to store
the meta-data of directories. They also make it possible for completely
empty directories to be stored.
+
+ @note
The names of entries within an archive can be complete paths, and
unarchivers typically create whatever directories are necessary as they
restore files, even if the archive contains no explicit directory entries.
*/
bool IsDir();
+
+ /**
+ Marks this entry as a directory if @a isDir is @true. See IsDir() for more info.
+ */
const void SetIsDir(bool isDir = true);
- //@}
- //@{
/**
- True if the entry is a read-only file.
+ Returns @true if the entry is a read-only file.
*/
bool IsReadOnly();
+
+ /**
+ Sets this entry as a read-only file.
+ */
const void SetIsReadOnly(bool isReadOnly = true);
- //@}
- //@{
/**
- Sets the notifier() for this entry.
- Whenever the wxArchiveInputStream updates
- this entry, it will then invoke the associated
- notifier's wxArchiveNotifier::OnEntryUpdated
- method.
+ Sets the notifier (see wxArchiveNotifier) for this entry.
+
+ Whenever the wxArchiveInputStream updates this entry, it will then invoke
+ the associated notifier's wxArchiveNotifier::OnEntryUpdated method.
+
Setting a notifier is not usually necessary. It is used to handle
certain cases when modifying an archive in a pipeline (i.e. between
non-seekable streams).
*/
void SetNotifier(wxArchiveNotifier& notifier);
+
+ /**
+ Unsets the notifier eventually attached to this entry.
+ */
void UnsetNotifier();
- //@}
};
+/**
+ Type of stream enumeration; used by wxArchiveClassFactory methods.
+*/
+enum wxStreamProtocolType
+{
+ wxSTREAM_PROTOCOL, //!< wxFileSystem protocol (should be only one)
+ wxSTREAM_MIMETYPE, //!< MIME types the stream handles
+ wxSTREAM_ENCODING, //!< Not used for archives
+ wxSTREAM_FILEEXT //!< File extensions the stream handles
+};
/**
@class wxArchiveClassFactory
@wxheader{archive.h}
- Allows the creation of streams to handle archive formats such
- as zip and tar.
+ Allows the creation of streams to handle archive formats such as zip and tar.
For example, given a filename you can search for a factory that will
handle it and create a stream to read it:
@code
- factory = wxArchiveClassFactory::Find(filename, wxSTREAM_FILEEXT);
+ factory = wxArchiveClassFactory::Find(filename, wxSTREAM_FILEEXT);
if (factory)
- stream = factory-NewStream(new wxFFileInputStream(filename));
+ stream = factory->NewStream(new wxFFileInputStream(filename));
@endcode
- wxArchiveClassFactory::Find can also search
- for a factory by MIME type or wxFileSystem protocol.
- The available factories can be enumerated
- using @ref wxArchiveClassFactory::getfirst "GetFirst() and GetNext".
+ wxArchiveClassFactory::Find can also search for a factory by MIME type
+ or wxFileSystem protocol.
+
+ The available factories can be enumerated using
+ wxArchiveClassFactory::GetFirst() and wxArchiveClassFactory::GetNext().
@library{wxbase}
- @category{FIXME}
+ @category{archive}
- @see @ref overview_wxarc "Archive formats such as zip", @ref
- overview_wxarcgeneric "Generic archive programming", wxArchiveEntry, wxArchiveInputStream, wxArchiveOutputStream, wxFilterClassFactory
+ @see @ref overview_archive, @ref overview_archive_generic, wxArchiveEntry,
+ wxArchiveInputStream, wxArchiveOutputStream, wxFilterClassFactory
*/
class wxArchiveClassFactory : public wxObject
{
/**
Returns @true if this factory can handle the given protocol, MIME type
or file extension.
+
When using wxSTREAM_FILEEXT for the second parameter, the first parameter
can be a complete filename rather than just an extension.
*/
A static member that finds a factory that can handle a given protocol, MIME
type or file extension. Returns a pointer to the class factory if found, or
@NULL otherwise. It does not give away ownership of the factory.
+
When using wxSTREAM_FILEEXT for the second parameter, the first parameter
can be a complete filename rather than just an extension.
*/
static const wxArchiveClassFactory* Find(const wxChar* protocol,
wxStreamProtocolType type = wxSTREAM_PROTOCOL);
- //@{
/**
- The wxMBConv object that the created streams
- will use when translating meta-data. The initial default, set by the
- constructor, is wxConvLocal.
+ Returns the wxMBConv object that the created streams will use when
+ translating meta-data. The initial default, set by the constructor,
+ is wxConvLocal.
*/
- wxMBConv GetConv();
- const void SetConv(wxMBConv& conv);
- //@}
+ wxMBConv GetConv() const;
+
+ /**
+ Sets the wxMBConv object that the created streams will use when
+ translating meta-data.
+ */
+ void SetConv(wxMBConv& conv);
//@{
/**
GetFirst and GetNext can be used to enumerate the available factories.
For example, to list them:
+
+ @code
+ wxString list;
+ const wxArchiveClassFactory *factory = wxArchiveClassFactory::GetFirst();
+
+ while (factory) {
+ list << factory->GetProtocol() << _T("\n");
+ factory = factory->GetNext();
+ }
+ @endcode
- GetFirst()/GetNext() return a pointer to a factory or @NULL if no more
+ GetFirst() and GetNext() return a pointer to a factory or @NULL if no more
are available. They do not give away ownership of the factory.
*/
static const wxArchiveClassFactory* GetFirst() const;
/**
Calls the static GetInternalName() function for the archive entry type,
- for example
- wxZipEntry::GetInternalName.
+ for example wxZipEntry::GetInternalName.
*/
wxString GetInternalName(const wxString& name,
wxPathFormat format = wxPATH_NATIVE) const;
/**
- Returns the wxFileSystem protocol supported by this factory. Equivalent
- to wxString(*GetProtcols()).
+ Returns the wxFileSystem protocol supported by this factory.
+ Equivalent to @code wxString(*GetProtocols()) @endcode.
*/
wxString GetProtocol() const;
/**
Returns the protocols, MIME types or file extensions supported by this
- factory, as an array of null terminated strings. It does not give away
- ownership of the array or strings.
+ factory, as an array of null terminated strings.
+
+ It does not give away ownership of the array or strings.
For example, to list the file extensions a factory supports:
+
+ @code
+ wxString list;
+ const wxChar *const *p;
+
+ for (p = factory->GetProtocols(wxSTREAM_FILEEXT); *p; p++)
+ list << *p << _T("\n");
+ @encode
*/
const wxChar* const* GetProtocols(wxStreamProtocolType type = wxSTREAM_PROTOCOL) const;
/**
- Create a new wxArchiveEntry object of the
- appropriate type.
+ Create a new wxArchiveEntry object of the appropriate type.
*/
wxArchiveEntry* NewEntry() const;
//@{
/**
Create a new input or output stream to read or write an archive.
+
If the parent stream is passed as a pointer then the new archive stream
takes ownership of it. If it is passed by reference then it does not.
*/
wxArchiveInputStream* NewStream(wxInputStream& stream) const;
- const wxArchiveOutputStream* NewStream(wxOutputStream& stream) const;
- const wxArchiveInputStream* NewStream(wxInputStream* stream) const;
- const wxArchiveOutputStream* NewStream(wxOutputStream* stream) const;
+ wxArchiveOutputStream* NewStream(wxOutputStream& stream) const;
+ wxArchiveInputStream* NewStream(wxInputStream* stream) const;
+ wxArchiveOutputStream* NewStream(wxOutputStream* stream) const;
//@}
/**
- Adds this class factory to the list returned
- by @ref getfirst() GetFirst()/GetNext.
+ Adds this class factory to the list returned by GetFirst() or GetNext().
+
It is not necessary to do this to use the archive streams. It is usually
used when implementing streams, typically the implementation will
add a static instance of its factory class.
+
It can also be used to change the order of a factory already in the list,
bringing it to the front. This isn't a thread safe operation
so can't be done when other threads are running that will be using the list.
void PushFront();
/**
- Removes this class factory from the list returned
- by @ref getfirst() GetFirst()/GetNext.
- Removing from the list isn't a thread safe operation
- so can't be done when other threads are running that will be using the list.
+ Removes this class factory from the list returned by GetFirst() and GetNext().
+
+ Removing from the list isn't a thread safe operation so can't be done when
+ other threads are running that will be using the list.
The list does not own the factories, so removing a factory does not delete it.
*/
void Remove();
@class wxArchiveNotifier
@wxheader{archive.h}
- If you need to know when a
- wxArchiveInputStream updates a
- wxArchiveEntry object, you can create
- a notifier by deriving from this abstract base class, overriding
- wxArchiveNotifier::OnEntryUpdated. An instance
- of your notifier class can then be assigned to the wxArchiveEntry object
- using wxArchiveEntry::SetNotifier.
+ If you need to know when a wxArchiveInputStream updates a wxArchiveEntry
+ object, you can create a notifier by deriving from this abstract base class,
+ overriding wxArchiveNotifier::OnEntryUpdated.
+
+ An instance of your notifier class can then be assigned to the wxArchiveEntry
+ object using wxArchiveEntry::SetNotifier.
Your OnEntryUpdated() method will then be invoked whenever the input
stream updates the entry.
Setting a notifier is not usually necessary. It is used to handle
certain cases when modifying an archive in a pipeline (i.e. between
non-seekable streams).
- See @ref overview_wxarcnoseek "Archives on non-seekable streams".
+ See @ref overview_archive_noseek.
@library{wxbase}
- @category{FIXME}
+ @category{archive}
- @see @ref overview_wxarcnoseek "Archives on non-seekable streams",
- wxArchiveEntry, wxArchiveInputStream, wxArchiveOutputStream
+ @see @ref overview_archive_noseek, wxArchiveEntry, wxArchiveInputStream,
+ wxArchiveOutputStream
*/
class wxArchiveNotifier
{
@endcode
The first template parameter should be the type of archive input stream
- (e.g. wxArchiveInputStream) and the
- second can either be a pointer to an entry
- (e.g. wxArchiveEntry*), or a string/pointer pair
- (e.g. std::pairwxString, wxArchiveEntry*).
+ (e.g. wxArchiveInputStream) and the second can either be a pointer to an entry
+ (e.g. wxArchiveEntry*), or a string/pointer pair (e.g. std::pairwxString,
+ wxArchiveEntry*).
The @c wx/archive.h header defines the following typedefs:
@code
- typedef wxArchiveIteratorwxArchiveInputStream wxArchiveIter;
+ typedef wxArchiveIterator<wxArchiveInputStream> wxArchiveIter;
- typedef wxArchiveIteratorwxArchiveInputStream,
- std::pairwxString, wxArchiveEntry* wxArchivePairIter;
+ typedef wxArchiveIterator<wxArchiveInputStream,
+ std::pair<wxString, wxArchiveEntry*> > wxArchivePairIter;
@endcode
The header for any implementation of this interface should define similar
typedefs for its types, for example in @c wx/zipstrm.h there is:
@code
- typedef wxArchiveIteratorwxZipInputStream wxZipIter;
+ typedef wxArchiveIterator<wxZipInputStream> wxZipIter;
- typedef wxArchiveIteratorwxZipInputStream,
- std::pairwxString, wxZipEntry* wxZipPairIter;
+ typedef wxArchiveIterator<wxZipInputStream,
+ std::pair<wxString, wxZipEntry*> > wxZipPairIter;
@endcode
Transferring the catalogue of an archive @e arc to a vector @e cat,
can then be done something like this:
@code
- std::vectorwxArchiveEntry* cat((wxArchiveIter)arc, wxArchiveIter());
+ std::vector<wxArchiveEntry*> cat((wxArchiveIter)arc, wxArchiveIter());
@endcode
When the iterator is dereferenced, it gives away ownership of an entry
you must delete the pointers it contains.
If you have smart pointers with normal copy semantics (i.e. not auto_ptr
- or wxScopedPtr), then you can create an iterator
- which uses them instead. For example, with a smart pointer class for
- zip entries @e ZipEntryPtr:
+ or wxScopedPtr), then you can create an iterator which uses them instead.
+
+ For example, with a smart pointer class for zip entries @e ZipEntryPtr:
@code
- typedef std::vectorZipEntryPtr ZipCatalog;
- typedef wxArchiveIteratorwxZipInputStream, ZipEntryPtr ZipIter;
- ZipCatalog cat((ZipIter)zip, ZipIter());
+ typedef std::vector<ZipEntryPtr> ZipCatalog;
+ typedef wxArchiveIterator<wxZipInputStream, ZipEntryPtr> ZipIter;
+ ZipCatalog cat((ZipIter)zip, ZipIter());
@endcode
- Iterators that return std::pair objects can be used to
- populate a std::multimap, to allow entries to be looked
- up by name. The string is initialised using the wxArchiveEntry object's
- wxArchiveEntry::GetInternalName function.
+ Iterators that return std::pair objects can be used to populate a std::multimap,
+ to allow entries to be looked up by name.
+ The string is initialised using the wxArchiveEntry object's
+ wxArchiveEntry::GetInternalName function.
@code
- typedef std::multimapwxString, wxZipEntry* ZipCatalog;
- ZipCatalog cat((wxZipPairIter)zip, wxZipPairIter());
+ typedef std::multimap<wxString, wxZipEntry*> ZipCatalog;
+ ZipCatalog cat((wxZipPairIter)zip, wxZipPairIter());
@endcode
-
Note that this iterator also gives away ownership of an entry
object each time it is dereferenced. So in the above example, when
you have finished with @e cat you must delete the pointers it contains.
(again @e ZipEntryPtr), no worries about ownership:
@code
- typedef std::multimapwxString, ZipEntryPtr ZipCatalog;
- typedef wxArchiveIteratorwxZipInputStream,
- std::pairwxString, ZipEntryPtr ZipPairIter;
- ZipCatalog cat((ZipPairIter)zip, ZipPairIter());
+ typedef std::multimap<wxString, ZipEntryPtr> ZipCatalog;
+ typedef wxArchiveIterator<wxZipInputStream,
+ std::pair<wxString, ZipEntryPtr> > ZipPairIter;
+ ZipCatalog cat((ZipPairIter)zip, ZipPairIter());
@endcode
@library{wxbase}
- @category{FIXME}
+ @category{archive}
@see wxArchiveEntry, wxArchiveInputStream, wxArchiveOutputStream
*/
class wxArchiveIterator
{
public:
- //@{
/**
- Construct iterator that returns all the entries in the archive input
- stream @e arc.
+ Default constructor.
*/
wxArchiveIterator();
+
+ /**
+ Construct the iterator that returns all the entries in the archive input
+ stream @e arc.
+ */
wxArchiveIterator(Arc& arc);
- //@}
/**
Returns an entry object from the archive input stream, giving away
Position the input iterator at the next entry in the archive input stream.
*/
wxArchiveIterator operator++();
- wxArchiveIterator operator++(int );
+ wxArchiveIterator operator++(int);
//@}
};
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