KTar Class Reference

#include <ktar.h>

Inheritance diagram for KTar:

KArchive List of all members.

Detailed Description

A class for reading / writing (optionally compressed) tar archives.

KTar allows you to read and write tar archives, including those that are compressed using gzip or bzip2.

Author:
Torben Weis <weis@kde.org>, David Faure <faure@kde.org>

Definition at line 40 of file ktar.h.


Public Member Functions

 KTar (const QString &filename, const QString &mimetype=QString::null)
 KTar (QIODevice *dev)
virtual ~KTar ()
QString fileName ()
void setOrigFileName (const QCString &fileName)
bool writeSymLink (const QString &name, const QString &target, const QString &user, const QString &group, mode_t perm, time_t atime, time_t mtime, time_t ctime)
virtual bool writeDir (const QString &name, const QString &user, const QString &group)
bool writeDir (const QString &name, const QString &user, const QString &group, mode_t perm, time_t atime, time_t mtime, time_t ctime)
virtual bool prepareWriting (const QString &name, const QString &user, const QString &group, uint size)
bool prepareWriting (const QString &name, const QString &user, const QString &group, uint size, mode_t perm, time_t atime, time_t mtime, time_t ctime)
virtual bool doneWriting (uint size)

Protected Member Functions

virtual bool openArchive (int mode)
virtual bool closeArchive ()
virtual void virtual_hook (int id, void *data)
bool prepareWriting_impl (const QString &name, const QString &user, const QString &group, uint size, mode_t perm, time_t atime, time_t mtime, time_t ctime)
bool writeDir_impl (const QString &name, const QString &user, const QString &group, mode_t perm, time_t atime, time_t mtime, time_t ctime)
bool writeSymLink_impl (const QString &name, const QString &target, const QString &user, const QString &group, mode_t perm, time_t atime, time_t mtime, time_t ctime)

Constructor & Destructor Documentation

KTar::KTar ( const QString filename,
const QString mimetype = QString::null 
)

Creates an instance that operates on the given filename using the compression filter associated to given mimetype.

Parameters:
filename is a local path (e.g. "/home/weis/myfile.tgz")
mimetype "application/x-gzip" or "application/x-bzip2" Do not use application/x-tgz or similar - you only need to specify the compression layer ! If the mimetype is omitted, it will be determined from the filename.

Definition at line 59 of file ktar.cpp.

KTar::KTar ( QIODevice dev  ) 

Creates an instance that operates on the given device.

The device can be compressed (KFilterDev) or not (QFile, etc.).

Warning:
Do not assume that giving a QFile here will decompress the file, in case it's compressed!
Parameters:
dev the device to read from. If the source is compressed, the QIODevice must take care of decompression

Definition at line 142 of file ktar.cpp.

KTar::~KTar (  )  [virtual]

If the tar ball is still opened, then it will be closed automatically by the destructor.

Definition at line 149 of file ktar.cpp.


Member Function Documentation

bool KTar::closeArchive (  )  [protected, virtual]

Closes the archive.

Called by close.

Implements KArchive.

Definition at line 534 of file ktar.cpp.

bool KTar::doneWriting ( uint  size  )  [virtual]

Call doneWriting after writing the data.

Parameters:
size the size of the file
See also:
prepareWriting()

Implements KArchive.

Definition at line 617 of file ktar.cpp.

QString KTar::fileName (  )  [inline]

The name of the tar file, as passed to the constructor Null if you used the QIODevice constructor.

Returns:
the name of the file, or QString::null if unknown

Definition at line 76 of file ktar.h.

bool KTar::openArchive ( int  mode  )  [protected, virtual]

Opens the archive for reading.

Parses the directory listing of the archive and creates the KArchiveDirectory/KArchiveFile entries.

Parameters:
mode the mode of the file

Implements KArchive.

Definition at line 330 of file ktar.cpp.

bool KTar::prepareWriting ( const QString name,
const QString user,
const QString group,
uint  size,
mode_t  perm,
time_t  atime,
time_t  mtime,
time_t  ctime 
)

Here's another way of writing a file into an archive: Call prepareWriting, then call writeData() as many times as wanted then call doneWriting( totalSize ).

For tar.gz files, you need to know the size before hand, it is needed in the header! For zip files, size isn't used.

This method also allows some file metadata to be set. However, depending on the archive type not all metadata might be regarded.

Parameters:
name the name of the file
user the user that owns the file
group the group that owns the file
size the size of the file
perm permissions of the file
atime time the file was last accessed
mtime modification time of the file
ctime creation time of the file
Since:
3.2
Todo:
TODO(BIC): make this virtual. For now use virtual hook.

Reimplemented from KArchive.

Definition at line 740 of file ktar.cpp.

bool KTar::prepareWriting ( const QString name,
const QString user,
const QString group,
uint  size 
) [virtual]

Here's another way of writing a file into an archive: Call prepareWriting, then call writeData() as many times as wanted then call doneWriting( totalSize ).

For tar.gz files, you need to know the size before hand, since it is needed in the header. For zip files, size isn't used.

Parameters:
name the name of the file
user the user that owns the file
group the group that owns the file
size the size of the file
Todo:
TODO(BIC): make this a thin non-virtual wrapper around prepareWriting(name,user,group,size,perm,atime,mtime,ctime) or eliminate it.

Implements KArchive.

Definition at line 609 of file ktar.cpp.

void KTar::setOrigFileName ( const QCString fileName  ) 

Special function for setting the "original file name" in the gzip header, when writing a tar.gz file.

It appears when using in the "file" command, for instance. Should only be called if the underlying device is a KFilterDev!

Parameters:
fileName the original file name

Definition at line 164 of file ktar.cpp.

bool KTar::writeDir ( const QString name,
const QString user,
const QString group,
mode_t  perm,
time_t  atime,
time_t  mtime,
time_t  ctime 
)

If an archive is opened for writing then you can add new directories using this function.

KArchive won't write one directory twice.

This method also allows some file metadata to be set. However, depending on the archive type not all metadata might be regarded.

Parameters:
name the name of the directory
user the user that owns the directory
group the group that owns the directory
perm permissions of the directory
atime time the file was last accessed
mtime modification time of the file
ctime creation time of the file
Since:
3.2
Todo:
TODO(BIC): make this virtual. For now use virtual hook

Reimplemented from KArchive.

Definition at line 811 of file ktar.cpp.

bool KTar::writeDir ( const QString name,
const QString user,
const QString group 
) [virtual]

If an archive is opened for writing then you can add new directories using this function.

KArchive won't write one directory twice.

Parameters:
name the name of the directory
user the user that owns the directory
group the group that owns the directory
Todo:
TODO(BIC): make this a thin wrapper around writeDir(name,user,group,perm,atime,mtime,ctime) or eliminate it

Implements KArchive.

Definition at line 547 of file ktar.cpp.

bool KTar::writeSymLink ( const QString name,
const QString target,
const QString user,
const QString group,
mode_t  perm,
time_t  atime,
time_t  mtime,
time_t  ctime 
)

Writes a symbolic link to the archive if the archive must be opened for writing.

Parameters:
name name of symbolic link
target target of symbolic link
user the user that owns the directory
group the group that owns the directory
perm permissions of the directory
atime time the file was last accessed
mtime modification time of the file
ctime creation time of the file
Since:
3.2
Todo:
TODO(BIC) make virtual. For now it must be implemented by virtual_hook.

Reimplemented from KArchive.

Definition at line 874 of file ktar.cpp.


The documentation for this class was generated from the following files:
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