multi volume file wrapper library
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
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.
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.
For reading multi-volume files, that has names archive.7z.0001, archive.7z.0002 and so on, you can call multivolumefile as follows;
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;
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.
You are welcome to contribute the project, as usual on github projects, Pull-Requests are always welcome.
Multivolume is licensed under GNU Lesser General Public license version 2.1 or later.
All notable changes to this project will be documented in this file.
Type hint information bundled.
Seek() returns current position.
Explanation of unsupported methods an modes in README
Fix append mode bug.
Fix added volume size become wrong
Fix append mode (#1)
Fin NotImplementedError when writing boudning of target files
Add mode ‘x’, ‘xb’ and ‘xt’
Add mode ‘a’, ‘ab’ and ‘at’
Change API: file argument of ‘r’ and ‘rb’ now single basename instead of list of files
Support context manager
Support read functions.
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