multivolumefile


Namemultivolumefile JSON
Version 0.2.3 PyPI version JSON
download
home_pagehttps://github.com/miurahr/multivolume
Summarymulti volume file wrapper library
upload_time2021-04-29 12:18:39
maintainer
docs_urlNone
authorHiroshi Miura
requires_python>=3.6
licenseLGPL-2.1+
keywords multivolume file
VCS
bugtrack_url
requirements No requirements were recorded.
Travis-CI No Travis.
coveralls test coverage No coveralls.
            ===============
multivolumefile
===============

.. image:: https://coveralls.io/repos/github/miurahr/multivolume/badge.svg?branch=master
  :target: https://coveralls.io/github/miurahr/multivolume?branch=master

.. image:: https://github.com/miurahr/multivolume/workflows/Run%20Tox%20tests/badge.svg
  :target: https://github.com/miurahr/multivolume/actions

MultiVolumefile is a python library to provide a file-object wrapping multiple files
as virtually like as a single file. It inherit io.RawIOBase class and support some of
its standard methods.

See API details at `python library reference`_

.. _`python library reference`: https://docs.python.org/3/library/io.html

Status
======

multivolumefile module is under active development and considered as ***Alpha*** state.
It is not good idea to use it on production systems, but it may work well in a limited range
of usage. Please check limitations and passed test cases.


Install
=======

You can install it as usual public libraries, you can use pip command

```
pip install multivolumefile
```

You are also able to add it to your setup.py/cfg as dependency.

Usages
------

- For reading multi-volume files, that has names `archive.7z.0001`, `archive.7z.0002` and so on,
  you can call multivolumefile as follows;

.. code-block::

    with multivolumefile.open('archive.7z', 'rb') as vol:
        data = vol.read(100)
        vol.seek(500)

- For writing multi-volue files, that has names `archive.7z.0001`, `archive.7z.0002` and so on,
  you can call multivolumefile as follows;


.. code-block::

    data = b'abcdefg'
    with multivolumefile.open('archive.7z', 'wb') as vol:
        size = vol.write(data)
        vol.seek(0)

you will see file `archive.7z.001` are written.

Limitations and known issues
============================

- fileno() is not supported and when call it, you will get RuntimeError exception.
- There are several non-implemented functions such as truncate() and writeline() that will raise NotimplementedError
- There are several non-implemented functions such as readlines(), readline() and readall().
- Text mode is not implemented.
- ***Caution***: When globbing existent volumes, it glob all files other than 4-digit extensions, it may break your data.


Contribution
============

You are welcome to contribute the project, as usual on github projects, Pull-Requests are always welcome.

License
=======

Multivolume is licensed under GNU Lesser General Public license version 2.1 or later.

=========
ChangeLog
=========

All notable changes to this project will be documented in this file.

`Unreleased`_
=============

Added
-----

Changed
-------

Fixed
-----

Deprecated
----------

Removed
-------

Security
--------

`v0.2.3`_
=========

Added
-----
* implement readall()

Chnaged
-------
* lint with black


`v0.2.2`_
=========

Added
-----

* Add py.typed file for type hinting.


`v0.2.1`_
=========

Added
-----

* Add `name` property that indicate basename of volumes
* Add `stat()` that return `stat_result` which has as mostly same methods as `os.stat_result` class
  except for platform dependent methods.


`v0.2.0`_
=========

Added
-----

* Type hint information bundled.

Fixed
-----

* Seek() returns current position.

Changed
-------

* Explanation of unsupported methods an modes in README

`v0.1.4`_
=========

Fixed
-----

* Fix append mode bug.

`v0.1.3`_
=========

Fixed
-----

* Fix added volume size become wrong

`v0.1.2`_
=========

Fixed
-----

* Fix append mode (#1)

`v0.1.1`_
=========

Fixed
-----

* Fin NotImplementedError when writing boudning of target files

`v0.1.0`_
=========

* ***API changed***

Added
-----

* Add mode 'x', 'xb' and 'xt'
* Add mode 'a', 'ab' and 'at'
* Support flush()

Changed
-------

* Change API: file argument of 'r' and 'rb' now single basename instead of list of files

`v0.0.5`_
=========

* Support context manager
* Support read functions.

.. History links
.. _Unreleased: https://github.com/miurahr/py7zr/compare/v0.2.2...HEAD
.. _v0.2.2: https://github.com/miurahr/py7zr/compare/v0.2.1...v0.2.2
.. _v0.2.1: https://github.com/miurahr/py7zr/compare/v0.2.0...v0.2.1
.. _v0.2.0: https://github.com/miurahr/py7zr/compare/v0.1.4...v0.2.0
.. _v0.1.4: https://github.com/miurahr/py7zr/compare/v0.1.3...v0.1.4
.. _v0.1.3: https://github.com/miurahr/py7zr/compare/v0.1.2...v0.1.3
.. _v0.1.2: https://github.com/miurahr/py7zr/compare/v0.1.1...v0.1.2
.. _v0.1.1: https://github.com/miurahr/py7zr/compare/v0.1.0...v0.1.1
.. _v0.1.0: https://github.com/miurahr/py7zr/compare/v0.0.5...v0.1.0
.. _v0.0.5: https://github.com/miurahr/py7zr/compare/v0.0.1...v0.0.5



            

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    "description": "===============\nmultivolumefile\n===============\n\n.. image:: https://coveralls.io/repos/github/miurahr/multivolume/badge.svg?branch=master\n  :target: https://coveralls.io/github/miurahr/multivolume?branch=master\n\n.. image:: https://github.com/miurahr/multivolume/workflows/Run%20Tox%20tests/badge.svg\n  :target: https://github.com/miurahr/multivolume/actions\n\nMultiVolumefile is a python library to provide a file-object wrapping multiple files\nas virtually like as a single file. It inherit io.RawIOBase class and support some of\nits standard methods.\n\nSee API details at `python library reference`_\n\n.. _`python library reference`: https://docs.python.org/3/library/io.html\n\nStatus\n======\n\nmultivolumefile module is under active development and considered as ***Alpha*** state.\nIt is not good idea to use it on production systems, but it may work well in a limited range\nof usage. Please check limitations and passed test cases.\n\n\nInstall\n=======\n\nYou can install it as usual public libraries, you can use pip command\n\n```\npip install multivolumefile\n```\n\nYou are also able to add it to your setup.py/cfg as dependency.\n\nUsages\n------\n\n- For reading multi-volume files, that has names `archive.7z.0001`, `archive.7z.0002` and so on,\n  you can call multivolumefile as follows;\n\n.. code-block::\n\n    with multivolumefile.open('archive.7z', 'rb') as vol:\n        data = vol.read(100)\n        vol.seek(500)\n\n- For writing multi-volue files, that has names `archive.7z.0001`, `archive.7z.0002` and so on,\n  you can call multivolumefile as follows;\n\n\n.. code-block::\n\n    data = b'abcdefg'\n    with multivolumefile.open('archive.7z', 'wb') as vol:\n        size = vol.write(data)\n        vol.seek(0)\n\nyou will see file `archive.7z.001` are written.\n\nLimitations and known issues\n============================\n\n- fileno() is not supported and when call it, you will get RuntimeError exception.\n- There are several non-implemented functions such as truncate() and writeline() that will raise NotimplementedError\n- There are several non-implemented functions such as readlines(), readline() and readall().\n- Text mode is not implemented.\n- ***Caution***: When globbing existent volumes, it glob all files other than 4-digit extensions, it may break your data.\n\n\nContribution\n============\n\nYou are welcome to contribute the project, as usual on github projects, Pull-Requests are always welcome.\n\nLicense\n=======\n\nMultivolume is licensed under GNU Lesser General Public license version 2.1 or later.\n\n=========\nChangeLog\n=========\n\nAll notable changes to this project will be documented in this file.\n\n`Unreleased`_\n=============\n\nAdded\n-----\n\nChanged\n-------\n\nFixed\n-----\n\nDeprecated\n----------\n\nRemoved\n-------\n\nSecurity\n--------\n\n`v0.2.3`_\n=========\n\nAdded\n-----\n* implement readall()\n\nChnaged\n-------\n* lint with black\n\n\n`v0.2.2`_\n=========\n\nAdded\n-----\n\n* Add py.typed file for type hinting.\n\n\n`v0.2.1`_\n=========\n\nAdded\n-----\n\n* Add `name` property that indicate basename of volumes\n* Add `stat()` that return `stat_result` which has as mostly same methods as `os.stat_result` class\n  except for platform dependent methods.\n\n\n`v0.2.0`_\n=========\n\nAdded\n-----\n\n* Type hint information bundled.\n\nFixed\n-----\n\n* Seek() returns current position.\n\nChanged\n-------\n\n* Explanation of unsupported methods an modes in README\n\n`v0.1.4`_\n=========\n\nFixed\n-----\n\n* Fix append mode bug.\n\n`v0.1.3`_\n=========\n\nFixed\n-----\n\n* Fix added volume size become wrong\n\n`v0.1.2`_\n=========\n\nFixed\n-----\n\n* Fix append mode (#1)\n\n`v0.1.1`_\n=========\n\nFixed\n-----\n\n* Fin NotImplementedError when writing boudning of target files\n\n`v0.1.0`_\n=========\n\n* ***API changed***\n\nAdded\n-----\n\n* Add mode 'x', 'xb' and 'xt'\n* Add mode 'a', 'ab' and 'at'\n* Support flush()\n\nChanged\n-------\n\n* Change API: file argument of 'r' and 'rb' now single basename instead of list of files\n\n`v0.0.5`_\n=========\n\n* Support context manager\n* Support read functions.\n\n.. History links\n.. _Unreleased: https://github.com/miurahr/py7zr/compare/v0.2.2...HEAD\n.. _v0.2.2: https://github.com/miurahr/py7zr/compare/v0.2.1...v0.2.2\n.. _v0.2.1: https://github.com/miurahr/py7zr/compare/v0.2.0...v0.2.1\n.. _v0.2.0: https://github.com/miurahr/py7zr/compare/v0.1.4...v0.2.0\n.. _v0.1.4: https://github.com/miurahr/py7zr/compare/v0.1.3...v0.1.4\n.. _v0.1.3: https://github.com/miurahr/py7zr/compare/v0.1.2...v0.1.3\n.. _v0.1.2: https://github.com/miurahr/py7zr/compare/v0.1.1...v0.1.2\n.. _v0.1.1: https://github.com/miurahr/py7zr/compare/v0.1.0...v0.1.1\n.. _v0.1.0: https://github.com/miurahr/py7zr/compare/v0.0.5...v0.1.0\n.. _v0.0.5: https://github.com/miurahr/py7zr/compare/v0.0.1...v0.0.5\n\n\n",
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