syntax-highlighting.py

[Stefan Tatschner]

Hi there,
I created a python script for the syntax-highlighting thing in cgit
which solves a few problems with the shipped script in cgit [1]. I use
it in production since half a year.

- It uses python2 because there are still a lot of problems with 
  python3 and pygments out there. [2], [3]
- I used guess_lexer_for_filename for a better detecting of the used    
  languages (e.g. mixed HTML and PHP, HTML (Django)...). 
  guess_lexer_for_filename does not work with python3 yet.
- The script looks whether there is a shebang line if it cannot   
  determine the language.
- It maps cmakelists.txt and pkgbuild (arch linux package system) files 
  to the correct lexer. Any other filenames can be added easily. 
- The CSS has to be defined in the CSS file to avoid inline CSS.
- `sys.stdin.read().decode(encoding='utf-8', errors='ignore')` is used
  to ensure the functionality even for corrupted file encodings.

If you like my implementation I would be happy to create a patchfile. :)

Stefan

Links:
[1]:
https://github.com/statschner/cgit_stuff/blob/4f847ddcd5aa7de0948bdb6b200a966b6389d94a/cgit_pygments.py
[2]:
https://bitbucket.org/birkenfeld/pygments-main/issue/901/problems-with-python3
[3]:
https://bitbucket.org/birkenfeld/pygments-main/issue/847/test-failures-with-python-33

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