neocgit

a more 'modern' version of cgit
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commit ceffeb5d52609a38c5d5d410456d796673fe8461
parent a52aaa90dab1d95f9df383d2cb3f7c428ab849fe
Author: Stefan Tatschner <stefan@sevenbyte.org>
Date:   Mon, 13 Jan 2014 22:10:45 +0100

filters: Improved syntax-highlighting.py

- Switched back to python2 according to a problem in pygments with python3.
  With the next release of pygments this problem should be fixed.
  Issue see here:
  https://bitbucket.org/birkenfeld/pygments-main/issue/901/problems-with-python3
- Just read the stdin, decode it to utf-8 and ignore unknown signs. This ensures
  that even destroyed files do not cause any errors in the filter.
- Improved language guessing:
  -> At first use guess_lexer_for_filename for a better detection of the used
     programming languages (even mixed cases will be detected, e.g. php + html).
  -> If nothing was found look if there is a shebang and use guess_lexer.
  -> As default/fallback choose TextLexer.

Signed-off-by: Stefan Tatschner <stefan@sevenbyte.org>

Diffstat:
Mfilters/syntax-highlighting.py | 52+++++++++++++++++++++++++++++++++-------------------
1 file changed, 33 insertions(+), 19 deletions(-)

diff --git a/filters/syntax-highlighting.py b/filters/syntax-highlighting.py @@ -1,13 +1,16 @@ -#!/usr/bin/env python3 +#!/usr/bin/env python2 -# This script uses Pygments and Python3. You must have both installed for this to work. +# This script uses Pygments and Python2. You must have both installed +# for this to work. +# # http://pygments.org/ # http://python.org/ # -# It may be used with the source-filter or repo.source-filter settings in cgitrc. +# It may be used with the source-filter or repo.source-filter settings +# in cgitrc. # -# The following environment variables can be used to retrieve the configuration -# of the repository for which this script is called: +# The following environment variables can be used to retrieve the +# configuration of the repository for which this script is called: # CGIT_REPO_URL ( = repo.url setting ) # CGIT_REPO_NAME ( = repo.name setting ) # CGIT_REPO_PATH ( = repo.path setting ) @@ -18,22 +21,33 @@ import sys -import cgi -import codecs -from pygments.lexers import get_lexer_for_filename from pygments import highlight +from pygments.util import ClassNotFound +from pygments.lexers import TextLexer +from pygments.lexers import guess_lexer +from pygments.lexers import guess_lexer_for_filename from pygments.formatters import HtmlFormatter -sys.stdin = codecs.getreader("utf-8")(sys.stdin.detach()) -sys.stdout = codecs.getwriter("utf-8")(sys.stdout.detach()) -doc = sys.stdin.read() + +# read stdin and decode to utf-8. ignore any unkown signs. +data = sys.stdin.read().decode(encoding='utf-8', errors='ignore') +filename = sys.argv[1] +formatter = HtmlFormatter(encoding='utf-8', style='pastie') + try: - lexer = get_lexer_for_filename(sys.argv[1]) - formatter = HtmlFormatter(style='pastie') - sys.stdout.write("<style>") - sys.stdout.write(formatter.get_style_defs('.highlight')) - sys.stdout.write("</style>") + lexer = guess_lexer_for_filename(filename, data, encoding='utf-8') +except ClassNotFound: + # check if there is any shebang + if data[0:2] == '#!': + lexer = guess_lexer(data, encoding='utf-8') + else: + lexer = TextLexer(encoding='utf-8') +except TypeError: + lexer = TextLexer(encoding='utf-8') - highlight(doc, lexer, formatter, sys.stdout) -except: - sys.stdout.write(str(cgi.escape(doc).encode("ascii", "xmlcharrefreplace"), "ascii")) +# highlight! :-) +# printout pygments' css definitions as well +sys.stdout.write('<style>') +sys.stdout.write(formatter.get_style_defs('.highlight')) +sys.stdout.write('</style>') +highlight(data, lexer, formatter, outfile=sys.stdout)