KArchive

KDE 4.5 PyKDE API Reference

- KDE's Python API

# KArchive Class Reference

`from PyKDE4.kio import *`

Subclasses: KAr, KTar, KZip

## Detailed Description

KArchive is a base class for reading and writing archives. generic class for reading/writing archives

Author:
  David Faure <faure@kde.org>

## Enumerations
<anonymous> | { UnknownTime }
## Methods
| __init__ (self, QString fileName)
| __init__ (self, QIODevice dev)
| __init__ (self, KArchive other)
bool | addLocalDirectory (self, QString path, QString destName)
bool | addLocalFile (self, QString fileName, QString destName)
bool | close (self)
bool | closeArchive (self)
bool | createDevice (self, QIODevice.OpenMode mode)
QIODevice | device (self)
KArchiveDirectory | directory (self)
bool | doFinishWriting (self, long size)
bool | doPrepareWriting (self, QString name, QString user, QString group, long size, long perm, long atime, long mtime, long ctime)
bool | doWriteDir (self, QString name, QString user, QString group, long perm, long atime, long mtime, long ctime)
bool | doWriteSymLink (self, QString name, QString target, QString user, QString group, long perm, long atime, long mtime, long ctime)
QString | fileName (self)
KArchiveDirectory | findOrCreate (self, QString path)
bool | finishWriting (self, long size)
bool | isOpen (self)
QIODevice.OpenMode | mode (self)
bool | open (self, QIODevice.OpenMode mode)
bool | openArchive (self, QIODevice.OpenMode mode)
bool | prepareWriting (self, QString name, QString user, QString group, long size, long perm=0100644, long atime=UnknownTime, long mtime=UnknownTime, long ctime=UnknownTime)
KArchiveDirectory | rootDir (self)
| setDevice (self, QIODevice dev)
| setRootDir (self, KArchiveDirectory rootDir)
bool | writeData (self, QString data, long size)
bool | writeDir (self, QString name, QString user, QString group, long perm=040755, long atime=UnknownTime, long mtime=UnknownTime, long ctime=UnknownTime)
bool | writeFile (self, QString name, QString user, QString group, QString data, long size, long perm=0100644, long atime=UnknownTime, long mtime=UnknownTime, long ctime=UnknownTime)
bool | writeSymLink (self, QString name, QString target, QString user, QString group, long perm=0120755, long atime=UnknownTime, long mtime=UnknownTime, long ctime=UnknownTime)

## Method Documentation

__init__ | ( | self, |
|  | QString | fileName
| ) |  |  |

Base constructor (protected since this is a pure virtual class).

Parameters:

  | fileName | is a local path (e.g. "/tmp/myfile.ext"), from which the archive will be read from, or into which the archive will be written, depending on the mode given to open().

__init__ | ( | self, |
|  | QIODevice | dev
| ) |  |  |

Base constructor (protected since this is a pure virtual class).

Parameters:

  | dev | the I/O device where the archive reads its data Note that this can be a file, but also a data buffer, a compression filter, etc. For a file in writing mode it is better to use the other constructor though, to benefit from the use of KSaveFile when saving.

__init__ | ( | self, |
|  | KArchive | other
| ) |  |  |

bool addLocalDirectory | ( | self, |
|  | QString | path,
|  | QString | destName
| ) |  |  |

Writes a local directory into the archive, including all its contents, recursively. Calls addLocalFile for each file to be added.

Since KDE 3.2 it will also add a path that is a symbolic link to a directory. The symbolic link will be dereferenced and the content of the directory it is pointing to added recursively. However, symbolic links *under* path will be stored as is.

Parameters:

  | path | full path to an existing local directory, to be added to the archive.
  | destName | the resulting name (or relative path) of the file in the archive.

bool addLocalFile | ( | self, |
|  | QString | fileName,
|  | QString | destName
| ) |  |  |

Writes a local file into the archive. The main difference with writeFile, is that this method minimizes memory usage, by not loading the whole file into memory in one go.

If fileName is a symbolic link, it will be written as is, i. e. it will not be resolved before.

Parameters:

  | fileName | full path to an existing local file, to be added to the archive.
  | destName | the resulting name (or relative path) of the file in the archive.

bool close | ( |  | self ) |

Closes the archive. Inherited classes might want to reimplement closeArchive instead.

Returns:
  true if close succeeded without problems

See also:
  open

bool closeArchive | ( |  | self ) |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Closes the archive. Called by close.

bool createDevice | ( | self, |
|  | QIODevice.OpenMode | mode
| ) |  |  |

Can be reimplemented in order to change the creation of the device (when using the fileName constructor). By default this method uses KSaveFile when saving, and a simple QFile on reading. This method is called by open().

QIODevice device | ( |  | self ) |

The underlying device.

Returns:
  the underlying device.

KArchiveDirectory directory | ( |  | self ) |

If an archive is opened for reading, then the contents of the archive can be accessed via this function.

Returns:
  the directory of the archive

bool doFinishWriting | ( | self, |
|  | long | size
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Called after writing the data. This virtual method must be implemented by subclasses.

Parameters:

  | size | the size of the file

See also:
  finishWriting()

bool doPrepareWriting | ( | self, |
|  | QString | name,
|  | QString | user,
|  | QString | group,
|  | long | size,
|  | long | perm,
|  | long | atime,
|  | long | mtime,
|  | long | ctime
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

This virtual method must be implemented by subclasses.

Depending on the archive type not all metadata might be 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
  | perm | permissions of the file. Use 0100644 if you don't have any more specific permissions to set.
  | atime | time the file was last accessed
  | mtime | modification time of the file
  | ctime | time of last status change

See also:
  prepareWriting

bool doWriteDir | ( | self, |
|  | QString | name,
|  | QString | user,
|  | QString | group,
|  | long | perm,
|  | long | atime,
|  | long | mtime,
|  | long | ctime
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Write a directory to the archive. This virtual method must be implemented by subclasses.

Depending on the archive type not all metadata might be used.

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. Use 040755 if you don't have any other information.
  | atime | time the file was last accessed
  | mtime | modification time of the file
  | ctime | time of last status change

See also:
  writeDir

bool doWriteSymLink | ( | self, |
|  | QString | name,
|  | QString | target,
|  | QString | user,
|  | QString | group,
|  | long | perm,
|  | long | atime,
|  | long | mtime,
|  | long | ctime
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Writes a symbolic link to the archive. This virtual method must be implemented by subclasses.

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 | time of last status change

See also:
  writeSymLink

QString fileName | ( |  | self ) |

The name of the archive file, as passed to the constructor that takes a fileName, or an empty string if you used the QIODevice constructor.

Returns:
  the name of the file, or QString() if unknown

KArchiveDirectory findOrCreate | ( | self, |
|  | QString | path
| ) |  |  |

Ensures that path exists, create otherwise. This handles e.g. tar files missing directory entries, like mico-2.3.0.tar.gz :)

Parameters:

  | path | the path of the directory

Returns:
  the directory with the given path

bool finishWriting | ( | self, |
|  | long | size
| ) |  |  |

Call finishWriting after writing the data.

Parameters:

  | size | the size of the file

See also:
  prepareWriting()

bool isOpen | ( |  | self ) |

Checks whether the archive is open.

Returns:
  true if the archive is opened

QIODevice.OpenMode mode | ( |  | self ) |

Returns the mode in which the archive was opened

Returns:
  the mode in which the archive was opened (QIODevice.ReadOnly or QIODevice.WriteOnly)

See also:
  open()

bool open | ( | self, |
|  | QIODevice.OpenMode | mode
| ) |  |  |

Opens the archive for reading or writing. Inherited classes might want to reimplement openArchive instead.

Parameters:

  | mode | may be QIODevice.ReadOnly or QIODevice.WriteOnly

See also:
  close

bool openArchive | ( | self, |
|  | QIODevice.OpenMode | mode
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Opens an archive for reading or writing. Called by open.

Parameters:

  | mode | may be QIODevice.ReadOnly or QIODevice.WriteOnly

bool prepareWriting | ( | self, |
|  | QString | name,
|  | QString | user,
|  | QString | group,
|  | long | size,
|  | long | perm=0100644,
|  | long | atime=UnknownTime,
|  | long | mtime=UnknownTime,
|  | long | ctime=UnknownTime
| ) |  |  |

Here's another way of writing a file into an archive: Call prepareWriting(), then call writeData() as many times as wanted then call finishWriting( 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 | time of last status change

KArchiveDirectory rootDir | ( |  | self ) |

Retrieves or create the root directory. The default implementation assumes that openArchive() did the parsing, so it creates a dummy rootdir if none was set (write mode, or no '/' in the archive). Reimplement this to provide parsing/listing on demand.

Returns:
  the root directory

setDevice | ( | self, |
|  | QIODevice | dev
| ) |  |  |

Can be called by derived classes in order to set the underlying device. Note that KArchive will -not- own the device, it must be deleted by the derived class.

setRootDir | ( | self, |
|  | KArchiveDirectory | rootDir
| ) |  |  |

Derived classes call setRootDir from openArchive, to set the root directory after parsing an existing archive.

bool writeData | ( | self, |
|  | QString | data,
|  | long | size
| ) |  |  |

Write data into the current file - to be called after calling prepareWriting

bool writeDir | ( | self, |
|  | QString | name,
|  | QString | user,
|  | QString | group,
|  | long | perm=040755,
|  | long | atime=UnknownTime,
|  | long | mtime=UnknownTime,
|  | long | ctime=UnknownTime
| ) |  |  |

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 | time of last status change

bool writeFile | ( | self, |
|  | QString | name,
|  | QString | user,
|  | QString | group,
|  | QString | data,
|  | long | size,
|  | long | perm=0100644,
|  | long | atime=UnknownTime,
|  | long | mtime=UnknownTime,
|  | long | ctime=UnknownTime
| ) |  |  |

If an archive is opened for writing then you can add a new file using this function. If the file name is for example "mydir/test1" then the directory "mydir" is automatically appended first if that did not happen yet.

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
  | data | the data to write (@p size bytes)
  | 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 | time of last status change

bool writeSymLink | ( | self, |
|  | QString | name,
|  | QString | target,
|  | QString | user,
|  | QString | group,
|  | long | perm=0120755,
|  | long | atime=UnknownTime,
|  | long | mtime=UnknownTime,
|  | long | ctime=UnknownTime
| ) |  |  |

Writes a symbolic link to the archive if supported. 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 | time of last status change

## Enumeration Documentation

anonymous

Enumerator:

  UnknownTime |