Ultra-lightweight pure Python package to check if a file is binary or text.
Ultra-lightweight pure Python package to guess whether a file is binary or text, using a heuristic similar to Perl’s pp_fttext and its analysis by @eliben.
- Free software: BSD license
- Documentation: http://binaryornot.readthedocs.org
It works, and I’m using this package in various places. But it doesn’t cover all edge cases yet.
The code could be improved. Pull requests welcome! As of now, it is based on these snippets, but that may change:
Has tests for these file types:
- Text: .css, .json, .txt, .svg
- Binary: .eot, .otf, ttf, .woff, .png, .jpg, .tiff, .bmp
You may be thinking, “I can write this in 2 lines of code?!”
It’s actually not that easy. Here’s a great article about how perldoc’s heuristic to guess file types works: http://eli.thegreenplace.net/2011/10/19/perls-guess-if-file-is-text-or-binary-implemented-in-python/
Also, this package saves you from having to write and thoroughly test those 2 lines of code with all sorts of weird file types, cross-platform.
- Special thanks to Eli Bendersky (@eliben) for his writeup explaining the heuristic and his implementation, which this is largely based on.
- Source code from Perl’s pp_fttext: https://github.com/mirrors/perl/blob/blead/pp_sys.c#L3287
- Complete rewrite of everything. Thanks @ncoghlan.
- Tests pass under Python 2.6, 2.7, 3.3, PyPy.
- First release on PyPI.