Mercurial > libervia-backend

annotate src/plugins/plugin_misc_text_syntaxes.py @ 837:eff944ff3e13

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plugin XEP_0277: check for XHTML namespace and decapsulate the content from the main div container
author souliane <souliane@mailoo.org>
date Wed, 12 Feb 2014 15:23:15 +0100
parents 2cc0201b4613
children 831f208b4ea3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT plugin for managing various text syntaxes
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.i18n import _, D_
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21 from logging import debug, info, error, warning
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22
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23 from wokkel import disco, pubsub
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24 from twisted.internet import defer
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25 from twisted.internet.threads import deferToThread
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26 from sat.core import exceptions
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27 from lxml import html
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28 from lxml.html import clean
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29 from cgi import escape
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30 import re
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31
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32
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33 CATEGORY = D_("Composition")
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34 NAME = "Syntax"
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35 _SYNTAX_XHTML = "XHTML"
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36 _SYNTAX_CURRENT = "@CURRENT@"
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37
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38 # TODO: check/adapt following list
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39 STYLES_WHITELIST = ["azimuth", "background-color", "border-bottom-color", "border-collapse", "border-color", "border-left-color", "border-right-color", "border-top-color", "clear", "color", "cursor", "direction", "display", "elevation", "float", "font", "font-family", "font-size", "font-style", "font-variant", "font-weight", "height", "letter-spacing", "line-height", "overflow", "pause", "pause-after", "pause-before", "pitch", "pitch-range", "richness", "speak", "speak-header", "speak-numeral", "speak-punctuation", "speech-rate", "stress", "text-align", "text-decoration", "text-indent", "unicode-bidi", "vertical-align", "voice-family", "volume", "white-space", "width"] # based on feedparser list (http://pythonhosted.org/feedparser/html-sanitization.html)
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40
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41 SAFE_ATTRS = html.defs.safe_attrs.union(('style',))
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42 STYLES_VALUES_REGEX = r'^(' + '|'.join(['([a-z-]+)', # alphabetical names
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43 '(#[0-9a-f]+)', # hex value
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44 '(\d+(.\d+)? *(|%|em|ex|px|in|cm|mm|pt|pc))', # values with units (or not)
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45 'rgb\( *((\d+(.\d+)?), *){2}(\d+(.\d+)?) *\)', # rgb function
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46 'rgba\( *((\d+(.\d+)?), *){3}(\d+(.\d+)?) *\)', # rgba function
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47 ]) + ') *(!important)?$' # we accept "!important" at the end
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48 STYLES_ACCEPTED_VALUE = re.compile(STYLES_VALUES_REGEX)
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49
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50 PLUGIN_INFO = {
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51 "name": "Text syntaxes",
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52 "import_name": "TEXT-SYNTAXES",
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53 "type": "MISC",
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54 "protocols": [],
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55 "dependencies": [],
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56 "main": "TextSyntaxes",
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57 "handler": "no",
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58 "description": _("""Management of various text syntaxes (XHTML-IM, Markdown, etc)""")
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59 }
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60
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61 class UnknownSyntax(Exception):
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62 pass
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63
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64 class TextSyntaxes(object):
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65 """ Text conversion class
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66 XHTML utf-8 is used as intermediate language for conversions
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67 """
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68
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69 OPT_DEFAULT = "DEFAULT"
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70 OPT_HIDDEN = "HIDDEN"
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71 OPT_NO_THREAD = "NO_THREAD"
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72 SYNTAX_XHTML = _SYNTAX_XHTML
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73 SYNTAX_MARKDOWN = "markdown"
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74 SYNTAX_TEXT = "text"
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75
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76 params = """
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77 <params>
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78 <individual>
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79 <category name="%(category_name)s" label="%(category_label)s">
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80 <param name="%(name)s" label="%(label)s"
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81 value="%(default)s" type="list" security="0">
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82 %(options)s
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83 </param>
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84 </category>
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85 </individual>
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86 </params>
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87 """
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88
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89 params_data = {
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90 'category_name': CATEGORY,
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91 'category_label': _(CATEGORY),
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92 'name': NAME,
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93 'label': _(NAME),
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94 'default': _SYNTAX_XHTML,
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95 'syntaxes': {},
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96 }
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97
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98 def __init__(self, host):
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99 info(_("Text syntaxes plugin initialization"))
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100 self.host = host
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101 self.syntaxes = {}
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102 self.addSyntax(self.SYNTAX_XHTML, lambda xhtml: defer.succeed(xhtml), lambda xhtml: defer.succeed(xhtml),
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103 TextSyntaxes.OPT_NO_THREAD)
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104 self.addSyntax(self.SYNTAX_TEXT, lambda text: escape(text), lambda xhtml: self._removeMarkups(xhtml), [TextSyntaxes.OPT_HIDDEN])
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105 try:
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106 import markdown, html2text
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107 self.addSyntax(self.SYNTAX_MARKDOWN, markdown.markdown, html2text.html2text, [TextSyntaxes.OPT_DEFAULT])
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108 except ImportError:
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109 warning("markdown or html2text not found, can't use Markdown syntax")
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110 host.bridge.addMethod("syntaxConvert", ".plugin", in_sign='sssbs', out_sign='s',
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111 async=True, method=self.convert)
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112
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113 def _updateParamOptions(self):
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114 data_synt = TextSyntaxes.params_data['syntaxes']
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115 syntaxes = []
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116
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117 for syntax in data_synt.keys():
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118 flags = data_synt[syntax]["flags"]
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119 if TextSyntaxes.OPT_HIDDEN not in flags:
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120 syntaxes.append(syntax)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
121
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
122 syntaxes.sort(key=unicode.lower)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
123 options = []
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
124
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
125 for syntax in syntaxes:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
126 options.append(u'<option value="%s" />' % syntax)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
127
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
128 TextSyntaxes.params_data["options"] = u'\n'.join(options)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
129 self.host.memory.updateParams(TextSyntaxes.params % TextSyntaxes.params_data)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
130
702
a25db3fe3959 plugin XEP-0071: rich messages management for sendMessage
Goffi <goffi@goffi.org>
parents: 699
diff changeset
131 def getCurrentSyntax(self, profile):
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
132 """ Return the selected syntax for the given profile
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
133
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
134 @param profile: %(doc_profile)s
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
135 @return: profile selected syntax
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
136 """
699
e819630c6737 plugin text syntaxes: fixed bad parameter order for getParamA
Goffi <goffi@goffi.org>
parents: 695
diff changeset
137 return self.host.memory.getParamA(NAME, CATEGORY , profile_key=profile)
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
138
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
139 def clean_xhtml(self, xhtml):
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
140 """ Clean XHTML text by removing potentially dangerous/malicious parts
705
6c8a119dcc94 plugin text syntaxes: clean_xhtml now accept lxml's HtmlElement to avoid parsing two times the same xml
Goffi <goffi@goffi.org>
parents: 702
diff changeset
141 @param xhtml: raw xhtml text to clean (or lxml's HtmlElement)
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
142 """
674
fb0b1100c908 plugin text_syntaxes: fixed clean_xhml (it now return XHTML instead of HTML)
Goffi <goffi@goffi.org>
parents: 665
diff changeset
143 def blocking_cleaning(xhtml):
692
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
144 """ Clean XHTML and style attributes """
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
145
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
146 def clean_style(styles_raw):
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
147 """" Remove styles not in the whitelist,
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
148 or where the value doesn't match the regex """
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
149 styles = styles_raw.split(";")
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
150 cleaned_styles = []
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
151 for style in styles:
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
152 try:
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
153 key, value = style.split(':')
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
154 except ValueError:
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
155 continue
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
156 key = key.lower().strip()
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
157 if key not in STYLES_WHITELIST:
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
158 continue
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
159 value = value.lower().strip()
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
160 if not STYLES_ACCEPTED_VALUE.match(value):
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
161 continue
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
162 if value == "none":
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
163 continue
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
164 cleaned_styles.append((key, value))
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
165 return "; ".join(["%s: %s" % (key, value) for key, value in cleaned_styles])
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
166
705
6c8a119dcc94 plugin text syntaxes: clean_xhtml now accept lxml's HtmlElement to avoid parsing two times the same xml
Goffi <goffi@goffi.org>
parents: 702
diff changeset
167 if isinstance(xhtml, basestring):
6c8a119dcc94 plugin text syntaxes: clean_xhtml now accept lxml's HtmlElement to avoid parsing two times the same xml
Goffi <goffi@goffi.org>
parents: 702
diff changeset
168 xhtml_elt = html.fromstring(xhtml)
6c8a119dcc94 plugin text syntaxes: clean_xhtml now accept lxml's HtmlElement to avoid parsing two times the same xml
Goffi <goffi@goffi.org>
parents: 702
diff changeset
169 elif isinstance(xhtml, html.HtmlElement):
6c8a119dcc94 plugin text syntaxes: clean_xhtml now accept lxml's HtmlElement to avoid parsing two times the same xml
Goffi <goffi@goffi.org>
parents: 702
diff changeset
170 xhtml_elt = xhtml
6c8a119dcc94 plugin text syntaxes: clean_xhtml now accept lxml's HtmlElement to avoid parsing two times the same xml
Goffi <goffi@goffi.org>
parents: 702
diff changeset
171 else:
6c8a119dcc94 plugin text syntaxes: clean_xhtml now accept lxml's HtmlElement to avoid parsing two times the same xml
Goffi <goffi@goffi.org>
parents: 702
diff changeset
172 error("Only strings and HtmlElements can be cleaned")
6c8a119dcc94 plugin text syntaxes: clean_xhtml now accept lxml's HtmlElement to avoid parsing two times the same xml
Goffi <goffi@goffi.org>
parents: 702
diff changeset
173 raise exceptions.DataError
674
fb0b1100c908 plugin text_syntaxes: fixed clean_xhml (it now return XHTML instead of HTML)
Goffi <goffi@goffi.org>
parents: 665
diff changeset
174 cleaner = clean.Cleaner(style=False,
fb0b1100c908 plugin text_syntaxes: fixed clean_xhml (it now return XHTML instead of HTML)
Goffi <goffi@goffi.org>
parents: 665
diff changeset
175 add_nofollow=False,
692
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
176 safe_attrs=SAFE_ATTRS)
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
177 xhtml_elt = cleaner.clean_html(xhtml_elt)
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
178 for elt in xhtml_elt.xpath("//*[@style]"):
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
179 elt.set("style", clean_style(elt.get('style')))
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
180 return html.tostring(xhtml_elt, method='xml')
674
fb0b1100c908 plugin text_syntaxes: fixed clean_xhml (it now return XHTML instead of HTML)
Goffi <goffi@goffi.org>
parents: 665
diff changeset
181
705
6c8a119dcc94 plugin text syntaxes: clean_xhtml now accept lxml's HtmlElement to avoid parsing two times the same xml
Goffi <goffi@goffi.org>
parents: 702
diff changeset
182 return deferToThread(blocking_cleaning, xhtml)
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
183
744
312a2842b2b8 plugins text-syntaxes: added a default value to use the current user syntax in convert
souliane <souliane@mailoo.org>
parents: 705
diff changeset
184 def convert(self, text, syntax_from, syntax_to=_SYNTAX_XHTML, safe=True, profile=None):
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
185 """ Convert a text between two syntaxes
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
186 @param text: text to convert
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
187 @param syntax_from: source syntax (e.g. "markdown")
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
188 @param syntax_to: dest syntax (e.g.: "XHTML")
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
189 @param safe: clean resulting XHTML to avoid malicious code if True
744
312a2842b2b8 plugins text-syntaxes: added a default value to use the current user syntax in convert
souliane <souliane@mailoo.org>
parents: 705
diff changeset
190 @param profile: needed only when syntax_from or syntax_to is set to _SYNTAX_CURRENT
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
191 @return: converted text """
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
192
744
312a2842b2b8 plugins text-syntaxes: added a default value to use the current user syntax in convert
souliane <souliane@mailoo.org>
parents: 705
diff changeset
193 if syntax_from == _SYNTAX_CURRENT:
312a2842b2b8 plugins text-syntaxes: added a default value to use the current user syntax in convert
souliane <souliane@mailoo.org>
parents: 705
diff changeset
194 syntax_from = self.getCurrentSyntax(profile)
312a2842b2b8 plugins text-syntaxes: added a default value to use the current user syntax in convert
souliane <souliane@mailoo.org>
parents: 705
diff changeset
195 if syntax_to == _SYNTAX_CURRENT:
312a2842b2b8 plugins text-syntaxes: added a default value to use the current user syntax in convert
souliane <souliane@mailoo.org>
parents: 705
diff changeset
196 syntax_to = self.getCurrentSyntax(profile)
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
197 syntaxes = TextSyntaxes.params_data['syntaxes']
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
198 if syntax_from not in syntaxes:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
199 raise UnknownSyntax(syntax_from)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
200 if syntax_to not in syntaxes:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
201 raise UnknownSyntax(syntax_to)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
202 d = None
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
203
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
204 if TextSyntaxes.OPT_NO_THREAD in syntaxes[syntax_from]["flags"]:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
205 d = syntaxes[syntax_from]["to"](text)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
206 else:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
207 d = deferToThread(syntaxes[syntax_from]["to"], text)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
208
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
209 #TODO: keep only body element and change it to a div here ?
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
210
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
211 if safe:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
212 d.addCallback(self.clean_xhtml)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
213
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
214 if TextSyntaxes.OPT_NO_THREAD in syntaxes[syntax_to]["flags"]:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
215 d.addCallback(syntaxes[syntax_to]["from"])
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
216 else:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
217 d.addCallback(lambda xhtml: deferToThread(syntaxes[syntax_to]["from"], xhtml))
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
218
836
2cc0201b4613 plugin text_syntaxes: rstrip the conversion result to avoid new lines systematically added by converters (e.g. html2text do this)
souliane <souliane@mailoo.org>
parents: 832
diff changeset
219 # converters can add new lines that disturb the microblog change detection
2cc0201b4613 plugin text_syntaxes: rstrip the conversion result to avoid new lines systematically added by converters (e.g. html2text do this)
souliane <souliane@mailoo.org>
parents: 832
diff changeset
220 d.addCallback(lambda text: text.rstrip())
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
221 return d
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
222
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
223 def addSyntax(self, name, to_xhtml_cb, from_xhtml_cb, flags = None):
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
224 """ Add a new syntax to the manager
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
225 @param name: unique name of the syntax
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
226 @param to_xhtml_cb: callback to convert from syntax to XHTML
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
227 @param from_xhtml_cb: callback to convert from XHTML to syntax
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
228 @param flags: set of optional flags, can be:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
229 TextSyntaxes.OPT_DEFAULT: use as the default syntax (replace former one)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
230 TextSyntaxes.OPT_HIDDEN: do not show in parameters
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
231 TextSyntaxes.OPT_NO_THREAD: do not defer to thread when converting (the callback must then return a deferred)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
232
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
233 """
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
234 name = unicode(name)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
235 flags = flags or []
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
236 if TextSyntaxes.OPT_HIDDEN in flags and TextSyntaxes.OPT_DEFAULT in flags:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
237 raise ValueError("%s and %s are mutually exclusive" % (TextSyntaxes.OPT_HIDDEN, TextSyntaxes.OPT_DEFAULT))
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
238
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
239 syntaxes = TextSyntaxes.params_data['syntaxes']
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
240 syntaxes[name] = {"to": to_xhtml_cb, "from": from_xhtml_cb, "flags": flags}
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
241 if TextSyntaxes.OPT_DEFAULT in flags:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
242 syntaxes = TextSyntaxes.params_data['default'] = name
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
243
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
244 self._updateParamOptions()
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
245
832
c4b22aedb7d7 plugin groupblog, XEP-0071, XEP-0277, text_syntaxes: manage raw/rich/xhtml data for content/title:
souliane <souliane@mailoo.org>
parents: 811
diff changeset
246 def _removeMarkups(self, xhtml):
c4b22aedb7d7 plugin groupblog, XEP-0071, XEP-0277, text_syntaxes: manage raw/rich/xhtml data for content/title:
souliane <souliane@mailoo.org>
parents: 811
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247 """
c4b22aedb7d7 plugin groupblog, XEP-0071, XEP-0277, text_syntaxes: manage raw/rich/xhtml data for content/title:
souliane <souliane@mailoo.org>
parents: 811
diff changeset
248 Remove XHTML markups from the given string.
c4b22aedb7d7 plugin groupblog, XEP-0071, XEP-0277, text_syntaxes: manage raw/rich/xhtml data for content/title:
souliane <souliane@mailoo.org>
parents: 811
diff changeset
249 @param xhtml: the XHTML string to be cleaned
c4b22aedb7d7 plugin groupblog, XEP-0071, XEP-0277, text_syntaxes: manage raw/rich/xhtml data for content/title:
souliane <souliane@mailoo.org>
parents: 811
diff changeset
250 @return: the cleaned string
c4b22aedb7d7 plugin groupblog, XEP-0071, XEP-0277, text_syntaxes: manage raw/rich/xhtml data for content/title:
souliane <souliane@mailoo.org>
parents: 811
diff changeset
251 """
c4b22aedb7d7 plugin groupblog, XEP-0071, XEP-0277, text_syntaxes: manage raw/rich/xhtml data for content/title:
souliane <souliane@mailoo.org>
parents: 811
diff changeset
252 cleaner = clean.Cleaner(kill_tags=['style'])
c4b22aedb7d7 plugin groupblog, XEP-0071, XEP-0277, text_syntaxes: manage raw/rich/xhtml data for content/title:
souliane <souliane@mailoo.org>
parents: 811
diff changeset
253 cleaned = cleaner.clean_html(html.fromstring(xhtml))
c4b22aedb7d7 plugin groupblog, XEP-0071, XEP-0277, text_syntaxes: manage raw/rich/xhtml data for content/title:
souliane <souliane@mailoo.org>
parents: 811
diff changeset
254 return html.tostring(cleaned, method="text")