annotate env/lib/python3.9/site-packages/bleach/linkifier.py @ 0:4f3585e2f14b draft default tip

"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author shellac
date Mon, 22 Mar 2021 18:12:50 +0000
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 from __future__ import unicode_literals
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2 import re
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3 import six
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4
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5 from bleach import callbacks as linkify_callbacks
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6 from bleach import html5lib_shim
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7 from bleach.utils import alphabetize_attributes, force_unicode
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8
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9
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10 #: List of default callbacks
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11 DEFAULT_CALLBACKS = [linkify_callbacks.nofollow]
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12
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13
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14 TLDS = """ac ad ae aero af ag ai al am an ao aq ar arpa as asia at au aw ax az
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15 ba bb bd be bf bg bh bi biz bj bm bn bo br bs bt bv bw by bz ca cat
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16 cc cd cf cg ch ci ck cl cm cn co com coop cr cu cv cx cy cz de dj dk
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17 dm do dz ec edu ee eg er es et eu fi fj fk fm fo fr ga gb gd ge gf gg
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18 gh gi gl gm gn gov gp gq gr gs gt gu gw gy hk hm hn hr ht hu id ie il
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19 im in info int io iq ir is it je jm jo jobs jp ke kg kh ki km kn kp
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20 kr kw ky kz la lb lc li lk lr ls lt lu lv ly ma mc md me mg mh mil mk
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21 ml mm mn mo mobi mp mq mr ms mt mu museum mv mw mx my mz na name nc ne
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22 net nf ng ni nl no np nr nu nz om org pa pe pf pg ph pk pl pm pn post
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23 pr pro ps pt pw py qa re ro rs ru rw sa sb sc sd se sg sh si sj sk sl
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24 sm sn so sr ss st su sv sx sy sz tc td tel tf tg th tj tk tl tm tn to
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25 tp tr travel tt tv tw tz ua ug uk us uy uz va vc ve vg vi vn vu wf ws
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26 xn xxx ye yt yu za zm zw""".split()
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27
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28 # Make sure that .com doesn't get matched by .co first
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29 TLDS.reverse()
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30
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31
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32 def build_url_re(tlds=TLDS, protocols=html5lib_shim.allowed_protocols):
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33 """Builds the url regex used by linkifier
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34
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35 If you want a different set of tlds or allowed protocols, pass those in
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36 and stomp on the existing ``url_re``::
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37
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38 from bleach import linkifier
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39
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40 my_url_re = linkifier.build_url_re(my_tlds_list, my_protocols)
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41
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42 linker = LinkifyFilter(url_re=my_url_re)
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43
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44 """
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45 return re.compile(
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46 r"""\(* # Match any opening parentheses.
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47 \b(?<![@.])(?:(?:{0}):/{{0,3}}(?:(?:\w+:)?\w+@)?)? # http://
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48 ([\w-]+\.)+(?:{1})(?:\:[0-9]+)?(?!\.\w)\b # xx.yy.tld(:##)?
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49 (?:[/?][^\s\{{\}}\|\\\^\[\]`<>"]*)?
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50 # /path/zz (excluding "unsafe" chars from RFC 1738,
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51 # except for # and ~, which happen in practice)
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52 """.format(
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53 "|".join(sorted(protocols)), "|".join(sorted(tlds))
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54 ),
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55 re.IGNORECASE | re.VERBOSE | re.UNICODE,
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56 )
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57
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58
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59 URL_RE = build_url_re()
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60
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61
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62 PROTO_RE = re.compile(r"^[\w-]+:/{0,3}", re.IGNORECASE)
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63
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64
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65 def build_email_re(tlds=TLDS):
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66 """Builds the email regex used by linkifier
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67
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68 If you want a different set of tlds, pass those in and stomp on the existing ``email_re``::
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69
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70 from bleach import linkifier
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71
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72 my_email_re = linkifier.build_email_re(my_tlds_list)
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73
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74 linker = LinkifyFilter(email_re=my_url_re)
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75
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76 """
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77 # open and closing braces doubled below for format string
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78 return re.compile(
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79 r"""(?<!//)
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80 (([-!#$%&'*+/=?^_`{{}}|~0-9A-Z]+
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81 (\.[-!#$%&'*+/=?^_`{{}}|~0-9A-Z]+)* # dot-atom
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82 |^"([\001-\010\013\014\016-\037!#-\[\]-\177]
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83 |\\[\001-\011\013\014\016-\177])*" # quoted-string
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84 )@(?:[A-Z0-9](?:[A-Z0-9-]{{0,61}}[A-Z0-9])?\.)+(?:{0})) # domain
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85 """.format(
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86 "|".join(tlds)
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87 ),
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88 re.IGNORECASE | re.MULTILINE | re.VERBOSE,
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89 )
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90
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91
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92 EMAIL_RE = build_email_re()
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93
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94
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95 class Linker(object):
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96 """Convert URL-like strings in an HTML fragment to links
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97
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98 This function converts strings that look like URLs, domain names and email
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99 addresses in text that may be an HTML fragment to links, while preserving:
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100
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101 1. links already in the string
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102 2. urls found in attributes
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103 3. email addresses
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104
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105 linkify does a best-effort approach and tries to recover from bad
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106 situations due to crazy text.
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107
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108 """
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109
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110 def __init__(
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111 self,
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112 callbacks=DEFAULT_CALLBACKS,
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113 skip_tags=None,
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114 parse_email=False,
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115 url_re=URL_RE,
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116 email_re=EMAIL_RE,
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117 recognized_tags=html5lib_shim.HTML_TAGS,
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118 ):
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119 """Creates a Linker instance
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120
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121 :arg list callbacks: list of callbacks to run when adjusting tag attributes;
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122 defaults to ``bleach.linkifier.DEFAULT_CALLBACKS``
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123
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124 :arg list skip_tags: list of tags that you don't want to linkify the
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125 contents of; for example, you could set this to ``['pre']`` to skip
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126 linkifying contents of ``pre`` tags
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127
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128 :arg bool parse_email: whether or not to linkify email addresses
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129
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130 :arg re url_re: url matching regex
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131
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132 :arg re email_re: email matching regex
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133
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134 :arg list-of-strings recognized_tags: the list of tags that linkify knows about;
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135 everything else gets escaped
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136
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137 :returns: linkified text as unicode
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138
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139 """
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140 self.callbacks = callbacks
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141 self.skip_tags = skip_tags
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142 self.parse_email = parse_email
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143 self.url_re = url_re
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144 self.email_re = email_re
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145
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146 # Create a parser/tokenizer that allows all HTML tags and escapes
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147 # anything not in that list.
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148 self.parser = html5lib_shim.BleachHTMLParser(
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149 tags=recognized_tags,
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150 strip=False,
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151 consume_entities=True,
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152 namespaceHTMLElements=False,
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153 )
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154 self.walker = html5lib_shim.getTreeWalker("etree")
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155 self.serializer = html5lib_shim.BleachHTMLSerializer(
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156 quote_attr_values="always",
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157 omit_optional_tags=False,
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158 # linkify does not sanitize
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159 sanitize=False,
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160 # linkify alphabetizes
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161 alphabetical_attributes=False,
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162 )
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163
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164 def linkify(self, text):
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165 """Linkify specified text
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166
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167 :arg str text: the text to add links to
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168
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169 :returns: linkified text as unicode
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170
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171 :raises TypeError: if ``text`` is not a text type
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172
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173 """
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174 if not isinstance(text, six.string_types):
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175 raise TypeError("argument must be of text type")
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176
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177 text = force_unicode(text)
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178
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179 if not text:
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180 return ""
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181
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182 dom = self.parser.parseFragment(text)
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183 filtered = LinkifyFilter(
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184 source=self.walker(dom),
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185 callbacks=self.callbacks,
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186 skip_tags=self.skip_tags,
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187 parse_email=self.parse_email,
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188 url_re=self.url_re,
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189 email_re=self.email_re,
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190 )
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191 return self.serializer.render(filtered)
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192
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193
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194 class LinkifyFilter(html5lib_shim.Filter):
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195 """html5lib filter that linkifies text
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196
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197 This will do the following:
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198
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199 * convert email addresses into links
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200 * convert urls into links
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201 * edit existing links by running them through callbacks--the default is to
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202 add a ``rel="nofollow"``
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203
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204 This filter can be used anywhere html5lib filters can be used.
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205
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206 """
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207
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208 def __init__(
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209 self,
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210 source,
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211 callbacks=DEFAULT_CALLBACKS,
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212 skip_tags=None,
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213 parse_email=False,
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214 url_re=URL_RE,
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215 email_re=EMAIL_RE,
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216 ):
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217 """Creates a LinkifyFilter instance
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218
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219 :arg TreeWalker source: stream
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220
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221 :arg list callbacks: list of callbacks to run when adjusting tag attributes;
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222 defaults to ``bleach.linkifier.DEFAULT_CALLBACKS``
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223
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224 :arg list skip_tags: list of tags that you don't want to linkify the
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225 contents of; for example, you could set this to ``['pre']`` to skip
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226 linkifying contents of ``pre`` tags
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227
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228 :arg bool parse_email: whether or not to linkify email addresses
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229
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230 :arg re url_re: url matching regex
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231
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232 :arg re email_re: email matching regex
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233
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234 """
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235 super(LinkifyFilter, self).__init__(source)
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236
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237 self.callbacks = callbacks or []
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238 self.skip_tags = skip_tags or []
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239 self.parse_email = parse_email
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240
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241 self.url_re = url_re
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242 self.email_re = email_re
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243
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244 def apply_callbacks(self, attrs, is_new):
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245 """Given an attrs dict and an is_new bool, runs through callbacks
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246
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247 Callbacks can return an adjusted attrs dict or ``None``. In the case of
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248 ``None``, we stop going through callbacks and return that and the link
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249 gets dropped.
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250
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251 :arg dict attrs: map of ``(namespace, name)`` -> ``value``
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252
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253 :arg bool is_new: whether or not this link was added by linkify
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254
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255 :returns: adjusted attrs dict or ``None``
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256
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257 """
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258 for cb in self.callbacks:
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259 attrs = cb(attrs, is_new)
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260 if attrs is None:
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261 return None
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262 return attrs
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263
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264 def extract_character_data(self, token_list):
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265 """Extracts and squashes character sequences in a token stream"""
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266 # FIXME(willkg): This is a terrible idea. What it does is drop all the
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267 # tags from the token list and merge the Characters and SpaceCharacters
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268 # tokens into a single text.
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269 #
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270 # So something like this::
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271 #
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272 # "<span>" "<b>" "some text" "</b>" "</span>"
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273 #
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274 # gets converted to "some text".
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275 #
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276 # This gets used to figure out the ``_text`` fauxttribute value for
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277 # linkify callables.
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278 #
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279 # I'm not really sure how else to support that ``_text`` fauxttribute and
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280 # maintain some modicum of backwards compatibility with previous versions
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281 # of Bleach.
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282
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283 out = []
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284 for token in token_list:
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285 token_type = token["type"]
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286 if token_type in ["Characters", "SpaceCharacters"]:
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287 out.append(token["data"])
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288
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289 return "".join(out)
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290
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291 def handle_email_addresses(self, src_iter):
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292 """Handle email addresses in character tokens"""
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293 for token in src_iter:
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294 if token["type"] == "Characters":
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295 text = token["data"]
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296 new_tokens = []
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297 end = 0
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298
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299 # For each email address we find in the text
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300 for match in self.email_re.finditer(text):
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301 if match.start() > end:
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302 new_tokens.append(
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303 {"type": "Characters", "data": text[end : match.start()]}
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304 )
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305
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306 # Run attributes through the callbacks to see what we
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307 # should do with this match
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308 attrs = {
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309 (None, "href"): "mailto:%s" % match.group(0),
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310 "_text": match.group(0),
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311 }
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312 attrs = self.apply_callbacks(attrs, True)
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313
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314 if attrs is None:
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315 # Just add the text--but not as a link
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316 new_tokens.append(
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317 {"type": "Characters", "data": match.group(0)}
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318 )
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319
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320 else:
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321 # Add an "a" tag for the new link
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322 _text = attrs.pop("_text", "")
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323 attrs = alphabetize_attributes(attrs)
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324 new_tokens.extend(
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325 [
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326 {"type": "StartTag", "name": "a", "data": attrs},
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327 {"type": "Characters", "data": force_unicode(_text)},
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328 {"type": "EndTag", "name": "a"},
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329 ]
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330 )
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331 end = match.end()
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332
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333 if new_tokens:
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334 # Yield the adjusted set of tokens and then continue
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335 # through the loop
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336 if end < len(text):
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337 new_tokens.append({"type": "Characters", "data": text[end:]})
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338
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339 for new_token in new_tokens:
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340 yield new_token
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341
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342 continue
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343
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344 yield token
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345
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346 def strip_non_url_bits(self, fragment):
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347 """Strips non-url bits from the url
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348
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349 This accounts for over-eager matching by the regex.
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350
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351 """
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parents:
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352 prefix = suffix = ""
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353
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parents:
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354 while fragment:
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355 # Try removing ( from the beginning and, if it's balanced, from the
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parents:
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356 # end, too
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357 if fragment.startswith("("):
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358 prefix = prefix + "("
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359 fragment = fragment[1:]
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360
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361 if fragment.endswith(")"):
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parents:
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362 suffix = ")" + suffix
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363 fragment = fragment[:-1]
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364 continue
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365
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366 # Now try extraneous things from the end. For example, sometimes we
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367 # pick up ) at the end of a url, but the url is in a parenthesized
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368 # phrase like:
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369 #
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370 # "i looked at the site (at http://example.com)"
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371
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372 if fragment.endswith(")") and "(" not in fragment:
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parents:
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373 fragment = fragment[:-1]
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parents:
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374 suffix = ")" + suffix
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375 continue
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parents:
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376
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shellac
parents:
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377 # Handle commas
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parents:
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378 if fragment.endswith(","):
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379 fragment = fragment[:-1]
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parents:
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380 suffix = "," + suffix
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diff changeset
381 continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
382
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
383 # Handle periods
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
384 if fragment.endswith("."):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
385 fragment = fragment[:-1]
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
386 suffix = "." + suffix
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
387 continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
388
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
389 # Nothing matched, so we're done
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
390 break
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
391
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
392 return fragment, prefix, suffix
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
393
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
394 def handle_links(self, src_iter):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
395 """Handle links in character tokens"""
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
396 in_a = False # happens, if parse_email=True and if a mail was found
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
397 for token in src_iter:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
398 if in_a:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
399 if token["type"] == "EndTag" and token["name"] == "a":
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
400 in_a = False
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
401 yield token
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
402 continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
403 elif token["type"] == "StartTag" and token["name"] == "a":
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
404 in_a = True
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
405 yield token
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
406 continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
407 if token["type"] == "Characters":
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
408 text = token["data"]
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
409 new_tokens = []
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
410 end = 0
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
411
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
412 for match in self.url_re.finditer(text):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
413 if match.start() > end:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
414 new_tokens.append(
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
415 {"type": "Characters", "data": text[end : match.start()]}
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
416 )
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
417
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
418 url = match.group(0)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
419 prefix = suffix = ""
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
420
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
421 # Sometimes we pick up too much in the url match, so look for
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
422 # bits we should drop and remove them from the match
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
423 url, prefix, suffix = self.strip_non_url_bits(url)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
424
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
425 # If there's no protocol, add one
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
426 if PROTO_RE.search(url):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
427 href = url
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
428 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
429 href = "http://%s" % url
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
430
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
431 attrs = {(None, "href"): href, "_text": url}
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
432 attrs = self.apply_callbacks(attrs, True)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
433
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
434 if attrs is None:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
435 # Just add the text
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
436 new_tokens.append(
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
437 {"type": "Characters", "data": prefix + url + suffix}
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
438 )
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
439
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
440 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
441 # Add the "a" tag!
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
442 if prefix:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
443 new_tokens.append({"type": "Characters", "data": prefix})
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
444
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
445 _text = attrs.pop("_text", "")
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
446 attrs = alphabetize_attributes(attrs)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
447
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
448 new_tokens.extend(
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
449 [
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
450 {"type": "StartTag", "name": "a", "data": attrs},
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
451 {"type": "Characters", "data": force_unicode(_text)},
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
452 {"type": "EndTag", "name": "a"},
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
453 ]
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
454 )
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
455
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
456 if suffix:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
457 new_tokens.append({"type": "Characters", "data": suffix})
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
458
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
459 end = match.end()
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
460
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
461 if new_tokens:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
462 # Yield the adjusted set of tokens and then continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
463 # through the loop
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
464 if end < len(text):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
465 new_tokens.append({"type": "Characters", "data": text[end:]})
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
466
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
467 for new_token in new_tokens:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
468 yield new_token
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
469
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
470 continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
471
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
472 yield token
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
473
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
474 def handle_a_tag(self, token_buffer):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
475 """Handle the "a" tag
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
476
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
477 This could adjust the link or drop it altogether depending on what the
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
478 callbacks return.
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
479
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
480 This yields the new set of tokens.
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
481
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
482 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
483 a_token = token_buffer[0]
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
484 if a_token["data"]:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
485 attrs = a_token["data"]
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
486 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
487 attrs = {}
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
488 text = self.extract_character_data(token_buffer)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
489 attrs["_text"] = text
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
490
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
491 attrs = self.apply_callbacks(attrs, False)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
492
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
493 if attrs is None:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
494 # We're dropping the "a" tag and everything else and replacing
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
495 # it with character data. So emit that token.
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
496 yield {"type": "Characters", "data": text}
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
497
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
498 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
499 new_text = attrs.pop("_text", "")
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
500 a_token["data"] = alphabetize_attributes(attrs)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
501
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
502 if text == new_text:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
503 # The callbacks didn't change the text, so we yield the new "a"
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
504 # token, then whatever else was there, then the end "a" token
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
505 yield a_token
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
506 for mem in token_buffer[1:]:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
507 yield mem
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
508
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
509 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
510 # If the callbacks changed the text, then we're going to drop
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
511 # all the tokens between the start and end "a" tags and replace
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
512 # it with the new text
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
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513 yield a_token
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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514 yield {"type": "Characters", "data": force_unicode(new_text)}
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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515 yield token_buffer[-1]
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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516
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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517 def __iter__(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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518 in_a = False
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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519 in_skip_tag = None
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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520
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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521 token_buffer = []
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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522
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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523 for token in super(LinkifyFilter, self).__iter__():
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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524 if in_a:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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525 # Handle the case where we're in an "a" tag--we want to buffer tokens
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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526 # until we hit an end "a" tag.
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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527 if token["type"] == "EndTag" and token["name"] == "a":
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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528 # Add the end tag to the token buffer and then handle them
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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529 # and yield anything returned
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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530 token_buffer.append(token)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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531 for new_token in self.handle_a_tag(token_buffer):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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532 yield new_token
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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533
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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534 # Clear "a" related state and continue since we've yielded all
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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535 # the tokens we're going to yield
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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536 in_a = False
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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537 token_buffer = []
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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538 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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539 token_buffer.append(token)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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540 continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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541
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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542 if token["type"] in ["StartTag", "EmptyTag"]:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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543 if token["name"] in self.skip_tags:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
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544 # Skip tags start a "special mode" where we don't linkify
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
545 # anything until the end tag.
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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546 in_skip_tag = token["name"]
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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547
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
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548 elif token["name"] == "a":
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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549 # The "a" tag is special--we switch to a slurp mode and
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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550 # slurp all the tokens until the end "a" tag and then
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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551 # figure out what to do with them there.
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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552 in_a = True
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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553 token_buffer.append(token)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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554
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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555 # We buffer the start tag, so we don't want to yield it,
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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556 # yet
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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557 continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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558
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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559 elif in_skip_tag and self.skip_tags:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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560 # NOTE(willkg): We put this clause here since in_a and
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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561 # switching in and out of in_a takes precedence.
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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diff changeset
562 if token["type"] == "EndTag" and token["name"] == in_skip_tag:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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563 in_skip_tag = None
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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564
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
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565 elif not in_a and not in_skip_tag and token["type"] == "Characters":
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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566 new_stream = iter([token])
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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diff changeset
567 if self.parse_email:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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diff changeset
568 new_stream = self.handle_email_addresses(new_stream)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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diff changeset
569
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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570 new_stream = self.handle_links(new_stream)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
571
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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diff changeset
572 for token in new_stream:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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diff changeset
573 yield token
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
574
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
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diff changeset
575 # We've already yielded this token, so continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
576 continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
577
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
578 yield token