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#!/usr/bin/env
'''This script is for use as a source-filter or repo.source-filter for cgit.

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 )
CGIT_REPO_OWNER     ( = repo.owner     setting )
CGIT_REPO_DEFBRANCH ( = repo.defbranch setting )
CGIT_REPO_SECTION   ( = section        setting )
CGIT_REPO_CLONE_URL ( = repo.clone-url setting )

'''
import sys

from pyments import highlight
from pygments.formatters import HtmlFormatter
from pygments.lexers import CommonLispLexer, TextLexer, guess_lexer, \
    guess_lexer_for_filename, get_lexer_by_name
from pygments.lexers.shell import BashLexer
from pygments.util import ClassNotFound

CommonLispLexer.filenames.append('*.asd')
CommonLispLexer.filenames.append('.stumpwmrc')

BashLexer.filenames.append('PKGBUILD')
BashLexer.filenames.append('*.install')
BashLexer.filenames.append('.zshrc')
BashLexer.filenames.append('.zprofile')

data = sys.stdin.read()
filename = sys.argv[1]
formatter = HtmlFormatter(encoding='utf-8', style='autumn')

try:
    if filename == 'CMakeLists.txt':
        lexer = get_lexer_by_name('cmake')
    else:
        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')

# print out pygments' css definitions as well
sys.stdout.write('<style>')
sys.stdout.write(formatter.get_style_defs('.highlight'))
sys.stdout.write('</style>')
sys.stdout.write(highlight(data, lexer, formatter).decode('utf-8'))