Mercurial > libervia-backend

annotate src/plugins/plugin_misc_text_syntaxes.py @ 2331:01877048c94a

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jp (blog/edit): avoid call to syntaxConvert if syntax is already XHTML
author Goffi <goffi@goffi.org>
date Thu, 13 Jul 2017 22:49:37 +0200
parents fe922e6fabd4
children 8b37a62336c3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1934
2daf7b4c6756 use of /usr/bin/env instead of /usr/bin/python in shebang
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1 #!/usr/bin/env python2
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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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d17772b0fe22 copyright update
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5 # Copyright (C) 2009-2016 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 sat.core.constants import Const as C
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22 from sat.core.log import getLogger
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23 log = getLogger(__name__)
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24
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25 from twisted.internet import defer
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26 from twisted.internet.threads import deferToThread
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27 from sat.core import exceptions
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28 try:
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29 from lxml import html
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30 from lxml.html import clean
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31 except ImportError:
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32 raise exceptions.MissingModule(u"Missing module lxml, please download/install it from http://lxml.de/")
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33 from cgi import escape
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34 import re
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35
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36
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37 CATEGORY = D_("Composition")
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38 NAME = "Syntax"
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39 _SYNTAX_XHTML = "XHTML"
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40 _SYNTAX_CURRENT = "@CURRENT@"
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41
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42 # TODO: check/adapt following list
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43 # list initialy based on feedparser list (http://pythonhosted.org/feedparser/html-sanitization.html)
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44 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")
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45
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46 SAFE_ATTRS = html.defs.safe_attrs.union(('style', 'poster', 'controls'))
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47 STYLES_VALUES_REGEX = r'^(' + '|'.join(['([a-z-]+)', # alphabetical names
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48 '(#[0-9a-f]+)', # hex value
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49 '(\d+(.\d+)? *(|%|em|ex|px|in|cm|mm|pt|pc))', # values with units (or not)
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50 'rgb\( *((\d+(.\d+)?), *){2}(\d+(.\d+)?) *\)', # rgb function
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51 'rgba\( *((\d+(.\d+)?), *){3}(\d+(.\d+)?) *\)', # rgba function
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52 ]) + ') *(!important)?$' # we accept "!important" at the end
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53 STYLES_ACCEPTED_VALUE = re.compile(STYLES_VALUES_REGEX)
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54
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55 PLUGIN_INFO = {
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56 C.PI_NAME: "Text syntaxes",
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57 C.PI_IMPORT_NAME: "TEXT-SYNTAXES",
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58 C.PI_TYPE: "MISC",
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59 C.PI_PROTOCOLS: [],
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60 C.PI_DEPENDENCIES: [],
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61 C.PI_MAIN: "TextSyntaxes",
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62 C.PI_HANDLER: "no",
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63 C.PI_DESCRIPTION: _("""Management of various text syntaxes (XHTML-IM, Markdown, etc)""")
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64 }
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65
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66
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67 class TextSyntaxes(object):
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68 """ Text conversion class
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69 XHTML utf-8 is used as intermediate language for conversions
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70 """
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71
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72 OPT_DEFAULT = "DEFAULT"
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73 OPT_HIDDEN = "HIDDEN"
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74 OPT_NO_THREAD = "NO_THREAD"
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75 SYNTAX_XHTML = _SYNTAX_XHTML
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76 SYNTAX_MARKDOWN = "markdown"
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77 SYNTAX_TEXT = "text"
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78 syntaxes = {}
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79 default_syntax = SYNTAX_XHTML
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80
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81 params = """
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82 <params>
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83 <individual>
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84 <category name="%(category_name)s" label="%(category_label)s">
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85 <param name="%(name)s" label="%(label)s" type="list" security="0">
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86 %(options)s
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87 </param>
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88 </category>
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89 </individual>
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90 </params>
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91 """
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92
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93 params_data = {
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94 'category_name': CATEGORY,
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95 'category_label': _(CATEGORY),
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96 'name': NAME,
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97 'label': _(NAME),
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98 'syntaxes': syntaxes,
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99 }
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100
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101 def __init__(self, host):
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102 log.info(_("Text syntaxes plugin initialization"))
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103 self.host = host
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104 self.addSyntax(self.SYNTAX_XHTML, lambda xhtml: defer.succeed(xhtml), lambda xhtml: defer.succeed(xhtml),
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105 TextSyntaxes.OPT_NO_THREAD)
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106 # TODO: text => XHTML should add <a/> to url like in frontends
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107 # it's probably best to move sat_frontends.tools.strings to sat.tools.common or similar
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108 self.addSyntax(self.SYNTAX_TEXT, lambda text: escape(text), lambda xhtml: self._removeMarkups(xhtml), [TextSyntaxes.OPT_HIDDEN])
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109 try:
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110 import markdown, html2text
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111
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112 def _html2text(html, baseurl=''):
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113 h = html2text.HTML2Text(baseurl=baseurl)
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114 h.body_width = 0 # do not truncate the lines, it breaks the long URLs
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115 return h.handle(html)
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116 self.addSyntax(self.SYNTAX_MARKDOWN, markdown.markdown, _html2text, [TextSyntaxes.OPT_DEFAULT])
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117 except ImportError:
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118 log.warning(u"markdown or html2text not found, can't use Markdown syntax")
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Goffi <goffi@goffi.org>
parents: 1803
diff changeset
119 log.info(u"You can download/install them from https://pythonhosted.org/Markdown/ and https://github.com/Alir3z4/html2text/")
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
120 host.bridge.addMethod("syntaxConvert", ".plugin", in_sign='sssbs', out_sign='s',
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
121 async=True, method=self.convert)
2324
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
122 host.bridge.addMethod("syntaxGet", ".plugin", in_sign='s', out_sign='s',
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
123 method=self.getSyntax)
665
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 def _updateParamOptions(self):
2324
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
126 data_synt = TextSyntaxes.syntaxes
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
127 default_synt = TextSyntaxes.default_syntax
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
128 syntaxes = []
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
129
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
130 for syntax in data_synt.keys():
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
131 flags = data_synt[syntax]["flags"]
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
132 if TextSyntaxes.OPT_HIDDEN not in flags:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
133 syntaxes.append(syntax)
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
134
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3c40fa0dcd7a pluging text syntaxes: various minor improvments:
Goffi <goffi@goffi.org>
parents: 1803
diff changeset
135 syntaxes.sort(key=lambda synt: synt.lower())
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
136 options = []
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
137
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
138 for syntax in syntaxes:
1847
d8c6c55aafd7 plugin text syntaxes: fixed defaut syntax handling
Goffi <goffi@goffi.org>
parents: 1826
diff changeset
139 selected = 'selected="true"' if syntax == default_synt else ''
968
75f3b3b430ff tools, frontends, memory: param definition and XMLUI handle multi-selection for list widgets:
souliane <souliane@mailoo.org>
parents: 852
diff changeset
140 options.append(u'<option value="%s" %s/>' % (syntax, selected))
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
141
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
142 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
143 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
144
702
a25db3fe3959 plugin XEP-0071: rich messages management for sendMessage
Goffi <goffi@goffi.org>
parents: 699
diff changeset
145 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
146 """ 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
147
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
148 @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
149 @return: profile selected syntax
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
150 """
699
e819630c6737 plugin text syntaxes: fixed bad parameter order for getParamA
Goffi <goffi@goffi.org>
parents: 695
diff changeset
151 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
152
2106
5874da3811b7 plugin text syntaxes: log error on cleanXHTML failure
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
153 def _logError(self, failure, action=u"converting syntax"):
5874da3811b7 plugin text syntaxes: log error on cleanXHTML failure
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
154 log.error(u"Error while {action}: {failure}".format(action=action, failure=failure))
5874da3811b7 plugin text syntaxes: log error on cleanXHTML failure
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
155 return failure
5874da3811b7 plugin text syntaxes: log error on cleanXHTML failure
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
156
1805
3c40fa0dcd7a pluging text syntaxes: various minor improvments:
Goffi <goffi@goffi.org>
parents: 1803
diff changeset
157 def cleanXHTML(self, xhtml):
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
158 """ 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
159 @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
160 """
674
fb0b1100c908 plugin text_syntaxes: fixed clean_xhml (it now return XHTML instead of HTML)
Goffi <goffi@goffi.org>
parents: 665
diff changeset
161 def blocking_cleaning(xhtml):
692
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
162 """ Clean XHTML and style attributes """
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
163
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
164 def clean_style(styles_raw):
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
165 """" Remove styles not in the whitelist,
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
166 or where the value doesn't match the regex """
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
167 styles = styles_raw.split(";")
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
168 cleaned_styles = []
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
169 for style in styles:
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
170 try:
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
171 key, value = style.split(':')
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
172 except ValueError:
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
173 continue
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
174 key = key.lower().strip()
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
175 if key not in STYLES_WHITELIST:
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
176 continue
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
177 value = value.lower().strip()
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
178 if not STYLES_ACCEPTED_VALUE.match(value):
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
179 continue
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
180 if value == "none":
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
181 continue
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
182 cleaned_styles.append((key, value))
1458
832846fefe85 plugin text-syntaxes: minor variable renaming
Goffi <goffi@goffi.org>
parents: 1396
diff changeset
183 return "; ".join(["%s: %s" % (key_, value_) for key_, value_ in cleaned_styles])
692
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
184
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
185 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
186 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
187 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
188 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
189 else:
993
301b342c697a core: use of the new core.log module:
Goffi <goffi@goffi.org>
parents: 968
diff changeset
190 log.error("Only strings and HtmlElements can be cleaned")
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
191 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
192 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
193 add_nofollow=False,
692
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
194 safe_attrs=SAFE_ATTRS)
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
195 xhtml_elt = cleaner.clean_html(xhtml_elt)
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
196 for elt in xhtml_elt.xpath("//*[@style]"):
e98db42cd78c plugin text syntaxes: styles sanitisation
Goffi <goffi@goffi.org>
parents: 674
diff changeset
197 elt.set("style", clean_style(elt.get('style')))
852
4cc55e05266d plugin text syntaxes: fixed cleaners encoding
Goffi <goffi@goffi.org>
parents: 841
diff changeset
198 return html.tostring(xhtml_elt, encoding=unicode, 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
199
2106
5874da3811b7 plugin text syntaxes: log error on cleanXHTML failure
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
200 d = deferToThread(blocking_cleaning, xhtml)
5874da3811b7 plugin text syntaxes: log error on cleanXHTML failure
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
201 d.addErrback(self._logError, action=u"cleaning syntax")
5874da3811b7 plugin text syntaxes: log error on cleanXHTML failure
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
202 return d
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
203
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
204 def convert(self, text, syntax_from, syntax_to=_SYNTAX_XHTML, safe=True, profile=None):
1803
14a97a5fe1c0 plugin text syntaxes: a non blocking syntax callback can now return a unicode directly instead of a Deferred
Goffi <goffi@goffi.org>
parents: 1766
diff changeset
205 """Convert a text between two syntaxes
14a97a5fe1c0 plugin text syntaxes: a non blocking syntax callback can now return a unicode directly instead of a Deferred
Goffi <goffi@goffi.org>
parents: 1766
diff changeset
206
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
207 @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
208 @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
209 @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
210 @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
211 @param profile: needed only when syntax_from or syntax_to is set to _SYNTAX_CURRENT
1803
14a97a5fe1c0 plugin text syntaxes: a non blocking syntax callback can now return a unicode directly instead of a Deferred
Goffi <goffi@goffi.org>
parents: 1766
diff changeset
212 @return(unicode): converted text
14a97a5fe1c0 plugin text syntaxes: a non blocking syntax callback can now return a unicode directly instead of a Deferred
Goffi <goffi@goffi.org>
parents: 1766
diff changeset
213 """
1805
3c40fa0dcd7a pluging text syntaxes: various minor improvments:
Goffi <goffi@goffi.org>
parents: 1803
diff changeset
214 # FIXME: convert should be abled to handle domish.Element directly
3c40fa0dcd7a pluging text syntaxes: various minor improvments:
Goffi <goffi@goffi.org>
parents: 1803
diff changeset
215 # when dealing with XHTML
3c40fa0dcd7a pluging text syntaxes: various minor improvments:
Goffi <goffi@goffi.org>
parents: 1803
diff changeset
216 # TODO: a way for parser to return parsing errors/warnings
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
217
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
218 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
219 syntax_from = self.getCurrentSyntax(profile)
2324
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
220 else:
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
221 syntax_from = syntax_from.lower().strip()
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
222 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
223 syntax_to = self.getCurrentSyntax(profile)
2324
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
224 else:
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
225 syntax_to = syntax_to.lower().strip()
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
226 syntaxes = TextSyntaxes.syntaxes
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
227 if syntax_from not in syntaxes:
2324
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
228 raise exceptions.NotFound(syntax_from)
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
229 if syntax_to not in syntaxes:
2324
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
230 raise exceptions.NotFound(syntax_to)
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
231 d = None
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 if TextSyntaxes.OPT_NO_THREAD in syntaxes[syntax_from]["flags"]:
1803
14a97a5fe1c0 plugin text syntaxes: a non blocking syntax callback can now return a unicode directly instead of a Deferred
Goffi <goffi@goffi.org>
parents: 1766
diff changeset
234 d = defer.maybeDeferred(syntaxes[syntax_from]["to"], text)
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
235 else:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
236 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
237
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
238 #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
239
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
240 if safe:
1805
3c40fa0dcd7a pluging text syntaxes: various minor improvments:
Goffi <goffi@goffi.org>
parents: 1803
diff changeset
241 d.addCallback(self.cleanXHTML)
665
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
242
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
parents:
diff changeset
243 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
244 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
245 else:
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
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246 d.addCallback(lambda xhtml: deferToThread(syntaxes[syntax_to]["from"], xhtml))
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247
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
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248 # 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)
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parents: 832
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249 d.addCallback(lambda text: text.rstrip())
665
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Goffi <goffi@goffi.org>
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250 return d
6a64e0a759e6 plugin text syntaxes: this plugin manage rich text syntaxes conversions and cleaning.
Goffi <goffi@goffi.org>
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251
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Goffi <goffi@goffi.org>
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252 def addSyntax(self, name, to_xhtml_cb, from_xhtml_cb, flags = None):
1803
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Goffi <goffi@goffi.org>
parents: 1766
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253 """Add a new syntax to the manager
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parents: 1766
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254
665
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Goffi <goffi@goffi.org>
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255 @param name: unique name of the syntax
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Goffi <goffi@goffi.org>
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256 @param to_xhtml_cb: callback to convert from syntax to XHTML
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257 @param from_xhtml_cb: callback to convert from XHTML to syntax
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258 @param flags: set of optional flags, can be:
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Goffi <goffi@goffi.org>
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259 TextSyntaxes.OPT_DEFAULT: use as the default syntax (replace former one)
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Goffi <goffi@goffi.org>
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260 TextSyntaxes.OPT_HIDDEN: do not show in parameters
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Goffi <goffi@goffi.org>
parents: 1766
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261 TextSyntaxes.OPT_NO_THREAD: do not defer to thread when converting (the callback may then return a deferred)
665
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Goffi <goffi@goffi.org>
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262 """
1805
3c40fa0dcd7a pluging text syntaxes: various minor improvments:
Goffi <goffi@goffi.org>
parents: 1803
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263 flags = flags if flags is not None else []
665
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Goffi <goffi@goffi.org>
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264 if TextSyntaxes.OPT_HIDDEN in flags and TextSyntaxes.OPT_DEFAULT in flags:
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14a97a5fe1c0 plugin text syntaxes: a non blocking syntax callback can now return a unicode directly instead of a Deferred
Goffi <goffi@goffi.org>
parents: 1766
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265 raise ValueError(u"{} and {} are mutually exclusive".format(TextSyntaxes.OPT_HIDDEN, TextSyntaxes.OPT_DEFAULT))
665
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Goffi <goffi@goffi.org>
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266
2324
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Goffi <goffi@goffi.org>
parents: 2145
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267 syntaxes = TextSyntaxes.syntaxes
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Goffi <goffi@goffi.org>
parents: 2145
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268 key = name.lower().strip()
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Goffi <goffi@goffi.org>
parents: 2145
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269 if key in syntaxes:
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Goffi <goffi@goffi.org>
parents: 2145
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270 raise exceptions.ConflictError(u"This syntax key already exists: {}".format(key))
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Goffi <goffi@goffi.org>
parents: 2145
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271 syntaxes[key] = {"name": name, "to": to_xhtml_cb, "from": from_xhtml_cb, "flags": flags}
665
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Goffi <goffi@goffi.org>
parents:
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272 if TextSyntaxes.OPT_DEFAULT in flags:
2324
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Goffi <goffi@goffi.org>
parents: 2145
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273 TextSyntaxes.default_syntaxe = key
665
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Goffi <goffi@goffi.org>
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274
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Goffi <goffi@goffi.org>
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275 self._updateParamOptions()
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276
2324
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Goffi <goffi@goffi.org>
parents: 2145
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277 def getSyntax(self, name):
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Goffi <goffi@goffi.org>
parents: 2145
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278 """get syntax key corresponding to a name
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Goffi <goffi@goffi.org>
parents: 2145
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279
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Goffi <goffi@goffi.org>
parents: 2145
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280 @raise exceptions.NotFound: syntax doesn't exist
832
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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281 """
2324
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Goffi <goffi@goffi.org>
parents: 2145
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282 key = name.lower().strip()
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Goffi <goffi@goffi.org>
parents: 2145
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283 if key in self.syntaxes:
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Goffi <goffi@goffi.org>
parents: 2145
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284 return key
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
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285 raise exceptions.NotFound
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
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286
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
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287 def _removeMarkups(self, xhtml):
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
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288 """Remove XHTML markups from the given string.
fe922e6fabd4 plugin text syntaxes: various improvments:
Goffi <goffi@goffi.org>
parents: 2145
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289
832
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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290 @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
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291 @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
292 """
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
293 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
294 cleaned = cleaner.clean_html(html.fromstring(xhtml))
852
4cc55e05266d plugin text syntaxes: fixed cleaners encoding
Goffi <goffi@goffi.org>
parents: 841
diff changeset
295 return html.tostring(cleaned, encoding=unicode, method="text")