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annotate roundup/dehtml.py @ 8249:d317a41dfcf3

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test: make probe_ports a class method under python2.
author John Rouillard <rouilj@ieee.org>
date Wed, 01 Jan 2025 00:27:52 -0500
parents b68a1d8fd5d9
children 520075b29474
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
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4 import sys
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5
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6 from roundup.anypy.strings import u2s, uchr
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7
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8 _pyver = sys.version_info[0]
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11 class dehtml:
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12 def __init__(self, converter):
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13 if converter == "none":
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14 self.html2text = None
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15 return
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16
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17 try:
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18 if converter == "beautifulsoup":
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19 # Not as well tested as dehtml.
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20 from bs4 import BeautifulSoup
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21
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22 def html2text(html):
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23 soup = BeautifulSoup(html, "html.parser")
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24
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25 # kill all script and style elements
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26 for script in soup(["script", "style"]):
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27 script.extract()
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28
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29 return u2s(soup.get_text("\n", strip=True))
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31 self.html2text = html2text
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32 else:
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33 raise ImportError
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34 except ImportError:
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35 # use the fallback below if beautiful soup is not installed.
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36 try:
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37 # Python 3+.
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38 from html.entities import name2codepoint
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39 from html.parser import HTMLParser
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40 except ImportError:
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41 # Python 2.
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42 from htmlentitydefs import name2codepoint
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43 from HTMLParser import HTMLParser
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44
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45 class DumbHTMLParser(HTMLParser):
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46 # class attribute
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47 text = ""
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48
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49 # internal state variable
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50 _skip_data = False
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51 _last_empty = False
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52
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53 def handle_data(self, data):
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54 if self._skip_data: # skip data in script or style block
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55 return
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56
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57 if (data.strip() == ""):
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58 # reduce multiple blank lines to 1
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59 if (self._last_empty):
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60 return
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61 else:
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62 self._last_empty = True
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63 else:
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64 self._last_empty = False
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65
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66 self.text = self.text + data
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67
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68 def handle_starttag(self, tag, attrs): # noqa: ARG002
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69 if (tag == "p"):
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70 self.text = self.text + "\n"
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71 if (tag in ("style", "script")):
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72 self._skip_data = True
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73
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74 def handle_endtag(self, tag):
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75 if (tag in ("style", "script")):
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76 self._skip_data = False
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77
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78 def handle_entityref(self, name):
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79 if self._skip_data:
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80 return
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81 c = uchr(name2codepoint[name])
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82 try:
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83 self.text = self.text + c
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84 except UnicodeEncodeError:
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85 # print a space as a placeholder
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86 self.text = self.text + " "
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87
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88 def html2text(html):
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89 parser = DumbHTMLParser(
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90 convert_charrefs=True) if _pyver == 3 else DumbHTMLParser()
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91 parser.feed(html)
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92 parser.close()
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93 return parser.text
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94
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95 self.html2text = html2text
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97
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98 if __name__ == "__main__":
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99 html = """
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100 <body>
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101 <script>
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102 this must not be in output
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103 </script>
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104 <style>
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105 p {display:block}
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106 </style>
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107 <div class="header"><h1>Roundup</h1>
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108 <div id="searchbox" style="display: none">
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109 <form class="search" action="../search.html" method="get">
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110 <input type="text" name="q" size="18" />
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111 <input type="submit" value="Search" />
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112 <input type="hidden" name="check_keywords" value="yes" />
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113 <input type="hidden" name="area" value="default" />
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114 </form>
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115 </div>
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116 <script type="text/javascript">$('#searchbox').show(0);</script>
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117 </div>
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118 <ul class="current">
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119 <li class="toctree-l1"><a class="reference internal" href="../index.html">Home</a></li>
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120 <li class="toctree-l1"><a class="reference external" href="http://pypi.python.org/pypi/roundup">Download</a></li>
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121 <li class="toctree-l1 current"><a class="reference internal" href="../docs.html">Docs</a><ul class="current">
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122 <li class="toctree-l2"><a class="reference internal" href="features.html">Roundup Features</a></li>
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123 <li class="toctree-l2 current"><a class="current reference internal" href="">Installing Roundup</a></li>
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124 <li class="toctree-l2"><a class="reference internal" href="upgrading.html">Upgrading to newer versions of Roundup</a></li>
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125 <li class="toctree-l2"><a class="reference internal" href="FAQ.html">Roundup FAQ</a></li>
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126 <li class="toctree-l2"><a class="reference internal" href="user_guide.html">User Guide</a></li>
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127 <li class="toctree-l2"><a class="reference internal" href="customizing.html">Customising Roundup</a></li>
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128 <li class="toctree-l2"><a class="reference internal" href="admin_guide.html">Administration Guide</a></li>
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129 </ul>
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130 <div class="section" id="prerequisites">
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131 <h2><a class="toc-backref" href="#id5">Prerequisites</a></h2>
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132 <p>Roundup requires Python 2.5 or newer (but not Python 3) with a functioning
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133 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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134 It is highly recommended that users install the latest patch version
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135 of python as these contain many fixes to serious bugs.</p>
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136 <p>Some variants of Linux will need an additional &#8220;python dev&#8221; package
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137 installed for Roundup installation to work. Debian and derivatives, are
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138 known to require this.</p>
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139 <p>If you&#8217;re on windows, you will either need to be using the ActiveState python
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140 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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141 have to install the win32all package separately (get it from
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142 <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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143 <script>
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144 &lt; HELP &GT;
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145 </script>
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146 </div>
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147 </body>
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148 """
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149
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150 html2text = dehtml("dehtml").html2text
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151 if html2text:
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152 print(html2text(html))
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153
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154 try:
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155 # trap error seen if N_TOKENS not defined when run.
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156 html2text = dehtml("beautifulsoup").html2text
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157 if html2text:
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158 print(html2text(html))
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159 except NameError as e:
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160 print("captured error %s" % e)
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161
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162 html2text = dehtml("none").html2text
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163 if html2text:
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164 print("FAIL: Error, dehtml(none) is returning a function")
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165 else:
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166 print("PASS: dehtml(none) is returning None")
Roundup Issue Tracker: http://roundup-tracker.org/