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annotate roundup/dehtml.py @ 5676:e70885fe72a4

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issue2551026: template variable not defined even though it is. Fix issue where variables defined in TAL expression are not available in the scope of the definition. (Tom Ekberg (tekberg))
author John Rouillard <rouilj@ieee.org>
date Tue, 26 Mar 2019 17:31:28 -0400
parents c749d6795bc2
children b74f0b50bef1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 from __future__ import print_function
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3 from roundup.anypy.strings import u2s, uchr
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4 class dehtml:
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5 def __init__(self, converter):
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6 if converter == "none":
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7 self.html2text = None
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8 return
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9
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10 try:
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11 if converter == "beautifulsoup":
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12 # Not as well tested as dehtml.
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13 from bs4 import BeautifulSoup
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14 def html2text(html):
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15 soup = BeautifulSoup(html)
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16
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17 # kill all script and style elements
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18 for script in soup(["script", "style"]):
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19 script.extract()
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20
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21 return u2s(soup.get_text('\n', strip=True))
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22
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23 self.html2text = html2text
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24 else:
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25 raise ImportError # use
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26 except ImportError:
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27 # use the fallback below if beautiful soup is not installed.
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28 try:
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29 # Python 3+.
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30 from html.parser import HTMLParser
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31 from html.entities import name2codepoint
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32 except ImportError:
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33 # Python 2.
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34 from HTMLParser import HTMLParser
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35 from htmlentitydefs import name2codepoint
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36
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37 class DumbHTMLParser(HTMLParser):
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38 # class attribute
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39 text=""
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40
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41 # internal state variable
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42 _skip_data = False
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43 _last_empty = False
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44
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45 def handle_data(self, data):
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46 if self._skip_data: # skip data if in script or style block
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47 return
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48
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49 if ( data.strip() == ""):
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50 # reduce multiple blank lines to 1
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51 if ( self._last_empty ):
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52 return
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53 else:
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54 self._last_empty = True
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55 else:
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56 self._last_empty = False
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57
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58 self.text=self.text + data
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59
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60 def handle_starttag(self, tag, attrs):
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61 if (tag == "p" ):
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62 self.text= self.text + "\n"
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63 if (tag in ("style", "script")):
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64 self._skip_data = True
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65
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66 def handle_endtag(self, tag):
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67 if (tag in ("style", "script")):
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68 self._skip_data = False
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69
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70 def handle_entityref(self, name):
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71 if self._skip_data:
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72 return
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73 c = uchr(name2codepoint[name])
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74 try:
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75 self.text= self.text + c
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76 except UnicodeEncodeError:
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77 # print a space as a placeholder
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78 pass
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79
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80 def html2text(html):
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81 parser = DumbHTMLParser()
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82 parser.feed(html)
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83 parser.close()
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84 return parser.text
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85
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86 self.html2text = html2text
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87
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88 if "__main__" == __name__:
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89 html='''
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90 <body>
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91 <script>
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92 this must not be in output
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93 </script>
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94 <style>
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95 p {display:block}
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96 </style>
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97 <div class="header"><h1>Roundup</h1>
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98 <div id="searchbox" style="display: none">
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99 <form class="search" action="../search.html" method="get">
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100 <input type="text" name="q" size="18" />
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101 <input type="submit" value="Search" />
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102 <input type="hidden" name="check_keywords" value="yes" />
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103 <input type="hidden" name="area" value="default" />
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104 </form>
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105 </div>
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106 <script type="text/javascript">$('#searchbox').show(0);</script>
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107 </div>
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108 <ul class="current">
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109 <li class="toctree-l1"><a class="reference internal" href="../index.html">Home</a></li>
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110 <li class="toctree-l1"><a class="reference external" href="http://pypi.python.org/pypi/roundup">Download</a></li>
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111 <li class="toctree-l1 current"><a class="reference internal" href="../docs.html">Docs</a><ul class="current">
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112 <li class="toctree-l2"><a class="reference internal" href="features.html">Roundup Features</a></li>
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113 <li class="toctree-l2 current"><a class="current reference internal" href="">Installing Roundup</a></li>
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114 <li class="toctree-l2"><a class="reference internal" href="upgrading.html">Upgrading to newer versions of Roundup</a></li>
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115 <li class="toctree-l2"><a class="reference internal" href="FAQ.html">Roundup FAQ</a></li>
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116 <li class="toctree-l2"><a class="reference internal" href="user_guide.html">User Guide</a></li>
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117 <li class="toctree-l2"><a class="reference internal" href="customizing.html">Customising Roundup</a></li>
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118 <li class="toctree-l2"><a class="reference internal" href="admin_guide.html">Administration Guide</a></li>
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119 </ul>
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120 <div class="section" id="prerequisites">
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121 <h2><a class="toc-backref" href="#id5">Prerequisites</a></h2>
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122 <p>Roundup requires Python 2.5 or newer (but not Python 3) with a functioning
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123 anydbm module. Download the latest version from <a class="reference external" href="http://www.python.org/">http://www.python.org/</a>.
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124 It is highly recommended that users install the latest patch version
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125 of python as these contain many fixes to serious bugs.</p>
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126 <p>Some variants of Linux will need an additional &#8220;python dev&#8221; package
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127 installed for Roundup installation to work. Debian and derivatives, are
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128 known to require this.</p>
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129 <p>If you&#8217;re on windows, you will either need to be using the ActiveState python
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130 distribution (at <a class="reference external" href="http://www.activestate.com/Products/ActivePython/">http://www.activestate.com/Products/ActivePython/</a>), or you&#8217;ll
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131 have to install the win32all package separately (get it from
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132 <a class="reference external" href="http://starship.python.net/crew/mhammond/win32/">http://starship.python.net/crew/mhammond/win32/</a>).</p>
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133 </div>
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134 </body>
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135 '''
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136
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137 html2text = dehtml("dehtml").html2text
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138 if html2text:
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139 print(html2text(html))
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140
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141 try:
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142 # trap error seen if N_TOKENS not defined when run.
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143 html2text = dehtml("beautifulsoup").html2text
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144 if html2text:
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145 print(html2text(html))
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146 except NameError as e:
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147 print("captured error %s"%e)
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148
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149 html2text = dehtml("none").html2text
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150 if html2text:
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151 print("FAIL: Error, dehtml(none) is returning a function")
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152 else:
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153 print("PASS: dehtml(none) is returning None")
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154
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155
Roundup Issue Tracker: http://roundup-tracker.org/