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annotate planemo/lib/python3.7/site-packages/bleach/__init__.py @ 0:d30785e31577 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:18:57 -0400
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1 # -*- coding: utf-8 -*-
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2
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3 from __future__ import unicode_literals
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4
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5 import packaging.version
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6
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7 from bleach.linkifier import (
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8 DEFAULT_CALLBACKS,
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9 Linker,
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10 )
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11 from bleach.sanitizer import (
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12 ALLOWED_ATTRIBUTES,
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13 ALLOWED_PROTOCOLS,
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14 ALLOWED_STYLES,
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15 ALLOWED_TAGS,
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16 Cleaner,
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17 )
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18
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19
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20 # yyyymmdd
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21 __releasedate__ = '20200429'
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22 # x.y.z or x.y.z.dev0 -- semver
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23 __version__ = '3.1.5'
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24 VERSION = packaging.version.Version(__version__)
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25
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26
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27 __all__ = ['clean', 'linkify']
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28
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29
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30 def clean(text, tags=ALLOWED_TAGS, attributes=ALLOWED_ATTRIBUTES,
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31 styles=ALLOWED_STYLES, protocols=ALLOWED_PROTOCOLS, strip=False,
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32 strip_comments=True):
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33 """Clean an HTML fragment of malicious content and return it
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34
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35 This function is a security-focused function whose sole purpose is to
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36 remove malicious content from a string such that it can be displayed as
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37 content in a web page.
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38
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39 This function is not designed to use to transform content to be used in
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40 non-web-page contexts.
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41
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42 Example::
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43
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44 import bleach
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45
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46 better_text = bleach.clean(yucky_text)
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47
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48
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49 .. Note::
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50
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51 If you're cleaning a lot of text and passing the same argument values or
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52 you want more configurability, consider using a
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53 :py:class:`bleach.sanitizer.Cleaner` instance.
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54
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55 :arg str text: the text to clean
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56
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57 :arg list tags: allowed list of tags; defaults to
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58 ``bleach.sanitizer.ALLOWED_TAGS``
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59
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60 :arg dict attributes: allowed attributes; can be a callable, list or dict;
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61 defaults to ``bleach.sanitizer.ALLOWED_ATTRIBUTES``
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62
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63 :arg list styles: allowed list of css styles; defaults to
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64 ``bleach.sanitizer.ALLOWED_STYLES``
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65
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66 :arg list protocols: allowed list of protocols for links; defaults
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67 to ``bleach.sanitizer.ALLOWED_PROTOCOLS``
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68
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69 :arg bool strip: whether or not to strip disallowed elements
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70
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71 :arg bool strip_comments: whether or not to strip HTML comments
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72
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73 :returns: cleaned text as unicode
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74
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75 """
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76 cleaner = Cleaner(
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77 tags=tags,
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78 attributes=attributes,
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79 styles=styles,
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80 protocols=protocols,
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81 strip=strip,
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82 strip_comments=strip_comments,
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83 )
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84 return cleaner.clean(text)
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85
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86
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87 def linkify(text, callbacks=DEFAULT_CALLBACKS, skip_tags=None, parse_email=False):
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88 """Convert URL-like strings in an HTML fragment to links
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89
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90 This function converts strings that look like URLs, domain names and email
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91 addresses in text that may be an HTML fragment to links, while preserving:
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92
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93 1. links already in the string
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94 2. urls found in attributes
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95 3. email addresses
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96
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97 linkify does a best-effort approach and tries to recover from bad
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98 situations due to crazy text.
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99
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100 .. Note::
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101
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102 If you're linking a lot of text and passing the same argument values or
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103 you want more configurability, consider using a
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104 :py:class:`bleach.linkifier.Linker` instance.
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105
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106 .. Note::
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107
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108 If you have text that you want to clean and then linkify, consider using
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109 the :py:class:`bleach.linkifier.LinkifyFilter` as a filter in the clean
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110 pass. That way you're not parsing the HTML twice.
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111
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112 :arg str text: the text to linkify
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113
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114 :arg list callbacks: list of callbacks to run when adjusting tag attributes;
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115 defaults to ``bleach.linkifier.DEFAULT_CALLBACKS``
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116
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117 :arg list skip_tags: list of tags that you don't want to linkify the
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118 contents of; for example, you could set this to ``['pre']`` to skip
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119 linkifying contents of ``pre`` tags
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120
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121 :arg bool parse_email: whether or not to linkify email addresses
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122
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123 :returns: linkified text as unicode
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124
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125 """
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126 linker = Linker(
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127 callbacks=callbacks,
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128 skip_tags=skip_tags,
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129 parse_email=parse_email
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130 )
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131 return linker.linkify(text)