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annotate rhodecode/lib/markup_renderer.py @ 3574:000653f7cdf9 beta

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avoid displaying repr of internal classes in user facing messages The context of the message will tell where the problem was and there is no reason to show ... does not exist for this repository <MercurialRepository at /home/marcink/repos/rhodecode>
author Mads Kiilerich <madski@unity3d.com>
date Thu, 21 Mar 2013 11:17:01 +0100
parents 01cb7df198ae
children 7563624e712c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # -*- coding: utf-8 -*-
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2 """
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3 rhodecode.lib.markup_renderer
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4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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5
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6
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7 Renderer for markup languages with ability to parse using rst or markdown
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8
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9 :created_on: Oct 27, 2011
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10 :author: marcink
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11 :copyright: (C) 2011-2012 Marcin Kuzminski <marcin@python-works.com>
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12 :license: GPLv3, see COPYING for more details.
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13 """
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14 # This program is free software: you can redistribute it and/or modify
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15 # it under the terms of the GNU General Public License as published by
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16 # the Free Software Foundation, either version 3 of the License, or
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17 # (at your option) any later version.
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18 #
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19 # This program is distributed in the hope that it will be useful,
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20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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22 # GNU General Public License for more details.
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23 #
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24 # You should have received a copy of the GNU General Public License
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25 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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26
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27 import re
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28 import logging
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29 import traceback
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30
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31 from rhodecode.lib.utils2 import safe_unicode, MENTIONS_REGEX
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32
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33 log = logging.getLogger(__name__)
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34
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35
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36 class MarkupRenderer(object):
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37 RESTRUCTUREDTEXT_DISALLOWED_DIRECTIVES = ['include', 'meta', 'raw']
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38
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39 MARKDOWN_PAT = re.compile(r'md|mkdn?|mdown|markdown', re.IGNORECASE)
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40 RST_PAT = re.compile(r're?st', re.IGNORECASE)
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41 PLAIN_PAT = re.compile(r'readme', re.IGNORECASE)
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42
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43 def __detect_renderer(self, source, filename=None):
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44 """
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45 runs detection of what renderer should be used for generating html
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46 from a markup language
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47
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48 filename can be also explicitly a renderer name
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49
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50 :param source:
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51 :param filename:
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52 """
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53
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54 if MarkupRenderer.MARKDOWN_PAT.findall(filename):
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55 detected_renderer = 'markdown'
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56 elif MarkupRenderer.RST_PAT.findall(filename):
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57 detected_renderer = 'rst'
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58 elif MarkupRenderer.PLAIN_PAT.findall(filename):
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59 detected_renderer = 'rst'
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60 else:
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61 detected_renderer = 'plain'
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62
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63 return getattr(MarkupRenderer, detected_renderer)
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64
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65 def render(self, source, filename=None):
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66 """
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67 Renders a given filename using detected renderer
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68 it detects renderers based on file extension or mimetype.
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69 At last it will just do a simple html replacing new lines with <br/>
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70
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71 :param file_name:
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72 :param source:
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73 """
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74
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75 renderer = self.__detect_renderer(source, filename)
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76 readme_data = renderer(source)
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77 return readme_data
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78
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79 @classmethod
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80 def plain(cls, source):
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81 source = safe_unicode(source)
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82
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83 def urlify_text(text):
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84 url_pat = re.compile(r'(http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]'
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85 '|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+)')
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86
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87 def url_func(match_obj):
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88 url_full = match_obj.groups()[0]
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89 return '<a href="%(url)s">%(url)s</a>' % ({'url': url_full})
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90
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91 return url_pat.sub(url_func, text)
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92
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93 source = urlify_text(source)
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94 return '<br />' + source.replace("\n", '<br />')
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95
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96 @classmethod
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97 def markdown(cls, source, safe=True):
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98 source = safe_unicode(source)
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99 try:
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100 import markdown as __markdown
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101 return __markdown.markdown(source, ['codehilite', 'extra'])
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102 except ImportError:
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103 log.warning('Install markdown to use this function')
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104 return cls.plain(source)
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105 except Exception:
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106 log.error(traceback.format_exc())
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107 if safe:
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108 return source
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109 else:
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110 raise
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111
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112 @classmethod
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113 def rst(cls, source, safe=True):
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114 source = safe_unicode(source)
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115 try:
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116 from docutils.core import publish_parts
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117 from docutils.parsers.rst import directives
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118 docutils_settings = dict([(alias, None) for alias in
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119 cls.RESTRUCTUREDTEXT_DISALLOWED_DIRECTIVES])
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120
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121 docutils_settings.update({'input_encoding': 'unicode',
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122 'report_level': 4})
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123
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124 for k, v in docutils_settings.iteritems():
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125 directives.register_directive(k, v)
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126
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127 parts = publish_parts(source=source,
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128 writer_name="html4css1",
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129 settings_overrides=docutils_settings)
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130
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131 return parts['html_title'] + parts["fragment"]
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132 except ImportError:
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133 log.warning('Install docutils to use this function')
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134 return cls.plain(source)
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135 except Exception:
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136 log.error(traceback.format_exc())
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137 if safe:
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138 return source
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139 else:
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140 raise
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141
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142 @classmethod
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143 def rst_with_mentions(cls, source):
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144 mention_pat = re.compile(MENTIONS_REGEX)
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145
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146 def wrapp(match_obj):
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147 uname = match_obj.groups()[0]
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148 return ' **@%(uname)s** ' % {'uname': uname}
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149 mention_hl = mention_pat.sub(wrapp, source).strip()
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150 return cls.rst(mention_hl)