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authorStefan Tatschner <stefan@sevenbyte.org>2014-01-13 22:10:45 +0100
committerJason A. Donenfeld <Jason@zx2c4.com>2014-01-13 22:48:51 +0100
commitceffeb5d52609a38c5d5d410456d796673fe8461 (patch)
treec262452378843ea97e893caf5866d3848553e380
parenta52aaa90dab1d95f9df383d2cb3f7c428ab849fe (diff)
downloadcgit-ceffeb5d52609a38c5d5d410456d796673fe8461.tar.gz
cgit-ceffeb5d52609a38c5d5d410456d796673fe8461.tar.bz2
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>
-rwxr-xr-xfilters/syntax-highlighting.py52
1 files changed, 33 insertions, 19 deletions
diff --git a/filters/syntax-highlighting.py b/filters/syntax-highlighting.py
index 72d9097..bcf32c8 100755
--- 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)