/usr/share/pyshared/tracopt/mimeview/enscript.py is in trac 0.12.5-3~deb7u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 | # -*- coding: utf-8 -*-
#
# Copyright (C) 2004-2009 Edgewall Software
# Copyright (C) 2004 Daniel Lundin <daniel@edgewall.com>
# Copyright (C) 2005 Christopher Lenz <cmlenz@gmx.de>
# All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://trac.edgewall.org/wiki/TracLicense.
#
# This software consists of voluntary contributions made by many
# individuals. For the exact contribution history, see the revision
# history and logs, available at http://trac.edgewall.org/log/.
#
# Author: Daniel Lundin <daniel@edgewall.com>
from genshi.core import Markup
from trac.config import Option, ListOption
from trac.core import *
from trac.mimeview.api import IHTMLPreviewRenderer, Mimeview
from trac.util import NaivePopen
from trac.util.html import Deuglifier
__all__ = ['EnscriptRenderer']
types = {
'application/xhtml+xml': ('html', 2),
'application/postscript': ('postscript', 2),
'application/x-csh': ('csh', 2),
'application/x-javascript': ('javascript', 2),
'application/x-troff': ('nroff', 2),
'text/html': ('html', 2),
'text/x-ada': ('ada', 2),
'text/x-asm': ('asm', 2),
'text/x-awk': ('awk', 2),
'text/x-c++src': ('cpp', 2),
'text/x-c++hdr': ('cpp', 2),
'text/x-chdr': ('c', 2),
'text/x-csh': ('csh', 2),
'text/x-csrc': ('c', 2),
'text/x-diff': ('diffu', 2), # Assume unified diff (works otherwise)
'text/x-eiffel': ('eiffel', 2),
'text/x-elisp': ('elisp', 2),
'text/x-fortran': ('fortran', 2),
'text/x-haskell': ('haskell', 2),
'text/x-idl': ('idl', 2),
'text/x-inf': ('inf', 2),
'text/x-java': ('java', 2),
'text/x-javascript': ('javascript', 2),
'text/x-ksh': ('ksh', 2),
'text/x-lua': ('lua', 2),
'text/x-m4': ('m4', 2),
'text/x-makefile': ('makefile', 2),
'text/x-mail': ('mail', 2),
'text/x-matlab': ('matlab', 2),
'text/x-objc': ('objc', 2),
'text/x-pascal': ('pascal', 2),
'text/x-perl': ('perl', 2),
'text/x-pyrex': ('pyrex', 2),
'text/x-python': ('python', 2),
'text/x-rfc': ('rfc', 2),
'text/x-ruby': ('ruby', 2),
'text/x-sh': ('sh', 2),
'text/x-scheme': ('scheme', 2),
'text/x-sql': ('sql', 2),
'text/x-tcl': ('tcl', 2),
'text/x-tex': ('tex', 2),
'text/x-vba': ('vba', 2),
'text/x-verilog': ('verilog', 2),
'text/x-vhdl': ('vhdl', 2),
'model/vrml': ('vrml', 2),
'application/x-sh': ('sh', 2),
'text/x-zsh': ('zsh', 2),
'text/vnd.wap.wmlscript': ('wmlscript', 2),
}
class EnscriptDeuglifier(Deuglifier):
@classmethod
def rules(cls):
return [
r'(?P<comment><FONT COLOR="#B22222">)',
r'(?P<keyword><FONT COLOR="#5F9EA0">)',
r'(?P<type><FONT COLOR="#228B22">)',
r'(?P<string><FONT COLOR="#BC8F8F">)',
r'(?P<func><FONT COLOR="#0000FF">)',
r'(?P<prep><FONT COLOR="#B8860B">)',
r'(?P<lang><FONT COLOR="#A020F0">)',
r'(?P<var><FONT COLOR="#DA70D6">)',
r'(?P<font><FONT.*?>)',
r'(?P<endfont></FONT>)'
]
class EnscriptRenderer(Component):
"""Syntax highlighter using GNU Enscript."""
implements(IHTMLPreviewRenderer)
expand_tabs = True
returns_source = True
path = Option('mimeviewer', 'enscript_path', 'enscript',
"""Path to the Enscript executable.""")
enscript_modes = ListOption('mimeviewer', 'enscript_modes',
'text/x-dylan:dylan:4', doc=
"""List of additional MIME types known by Enscript.
For each, a tuple `mimetype:mode:quality` has to be
specified, where `mimetype` is the MIME type,
`mode` is the corresponding Enscript mode to be used
for the conversion and `quality` is the quality ratio
associated to this conversion.
That can also be used to override the default
quality ratio used by the Enscript render, which is 2
(''since 0.10'').""")
def __init__(self):
self._types = None
# IHTMLPreviewRenderer methods
def get_quality_ratio(self, mimetype):
# Extend default MIME type to mode mappings with configured ones
if not self._types:
self._types = {}
self._types.update(types)
self._types.update(
Mimeview(self.env).configured_modes_mapping('enscript'))
return self._types.get(mimetype, (None, 0))[1]
def render(self, context, mimetype, content, filename=None, rev=None):
cmdline = self.path
mimetype = mimetype.split(';', 1)[0] # strip off charset
mode = self._types[mimetype][0]
cmdline += ' --color -h -q --language=html -p - -E%s' % mode
self.env.log.debug("Enscript command line: %s" % cmdline)
np = NaivePopen(cmdline, content.encode('utf-8'), capturestderr=1)
if np.errorlevel or np.err:
self.env.disable_component(self)
err = "Running enscript failed with (%s, %s), disabling " \
"EnscriptRenderer (command: '%s')" \
% (np.errorlevel, np.err.strip(), cmdline)
raise Exception(err)
odata = np.out
# Strip header and footer
i = odata.find('<PRE>')
beg = i > 0 and i + 6
i = odata.rfind('</PRE>')
end = i > 0 and i or len(odata)
odata = EnscriptDeuglifier().format(odata[beg:end].decode('utf-8'))
return [Markup(line) for line in odata.splitlines()]
|