annotate MoinMoin/parser/docbook.py @ 0:77665d8e2254

tag of nonpublic@localhost--archive/moin--enterprise--1.5--base-0 (automatically generated log message) imported from: moin--main--1.5--base-0
author Thomas Waldmann <tw-public@gmx.de>
date Thu, 22 Sep 2005 15:09:50 +0000
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rev   line source
0
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1 # -*- coding: iso-8859-1 -*-
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2 """
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3 MoinMoin - DocBook-XML Parser
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4
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5 This code was tested with 4Suite 1.0a4 and 1.0b1
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6
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7 @copyright: 2005 by Henry Ho <henryho167 AT hotmail DOT com>
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8 @copyright: 2005 by MoinMoin:AlexanderSchremmer
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9 @license: GNU GPL, see COPYING for details.
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10
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11 DOCBOOK Parser:
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12
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13 Features:
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14 - image support through Attachment
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15 - internal Wikilinks if a word is a strict wikiname
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16 - image alt is perserved
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17 - works with compiled xslt stylesheet for optimized performance
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18
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19 Configuration:
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20 - make sure you have installed the DocBook XSLT files
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21 - set the path to the html directory of the DocBook XSLT files in your
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22 wiki or farm configuration:
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23 docbook_html_dir = r"/usr/share/xml/docbook/stylesheet/nwalsh/html/"
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24 Note that this directory needs to be writable because a cache file will
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25 be created there.
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26
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27 >How can I use Ft API for DTD validation?
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28 If you have PyXMl installed, you can use ValidatingReader rather than
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29 NonvalidatingReader. See:
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30 http://uche.ogbuji.net/tech/akara/nodes/2003-01-01/domlettes
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31 """
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32
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33 import StringIO
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34 import os.path
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35 import cPickle
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36 import re
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37
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38 from MoinMoin import caching, config, wikiutil, Page
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39 from MoinMoin.parser.xslt import Parser as XsltParser
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40 from MoinMoin.parser.wiki import Parser as WikiParser
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41
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42 Dependencies = []
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43
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44 class Parser(XsltParser):
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45 """
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46 Send XML file formatted via XSLT.
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47 """
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48
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49 caching = 1
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50 Dependencies = Dependencies
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51
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52 def __init__(self, raw, request, **kw):
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53 XsltParser.__init__(self, raw, request)
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54
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55 # relative path to docbook.xsl and compiled_xsl
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56 docbook_html_directory = request.cfg.docbook_html_dir
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57 self.db_xsl = os.path.join(docbook_html_directory, 'docbook.xsl')
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58 self.db_compiled_xsl = os.path.join(docbook_html_directory, 'db_compiled.dat')
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59
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60 self.wikiParser = WikiParser(raw = self.raw, request = self.request, pretty_url=1)
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61 self.key = 'docbook'
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62
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63 def format(self, formatter):
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64 self.wikiParser.formatter = formatter
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65 XsltParser.format(self, formatter)
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66
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67 def append_stylesheet(self):
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68 """"
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69 virtual function, for docbook parser
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70 """
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71 abs_db_xsl = os.path.abspath(self.db_xsl)
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72 abs_db_compiled_xsl = os.path.abspath(self.db_compiled_xsl)
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73
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74 # same as path.exists, but also test if it is a file
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75 if not os.path.isfile(abs_db_compiled_xsl):
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76 _compile_xsl(abs_db_xsl, abs_db_compiled_xsl)
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77
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78 assert os.path.isfile(abs_db_compiled_xsl)
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79
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80 self.processor.appendStylesheetInstance(cPickle.load(file(abs_db_compiled_xsl, 'rb')))
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81
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82 def parse_result(self, result):
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83 """
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84 additional parsing to the resulting XSLT'ed result (resultString) before saving
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85
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86 will do:
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87 BASIC CLEAN UP : remove unnecessary HTML tags
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88 RESOLVE IMG SRC : fix src to find attachment
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89 RESOLVE WikiNames: if a word is a valid wikiname & a valid wikipage,
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90 replace word with hyperlink
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91 """
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92
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93 # BASIC CLEAN UP
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94 # remove from beginning until end of body tag
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95 found = re.search('<body.*?>', result)
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96 if found:
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97 result = result[found.end():]
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98
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99 # remove everything after & including </body>
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100 found = result.rfind('</body>')
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101 if found != -1:
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102 result = result[:found]
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103
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104 # RESOLVE IMG SRC
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105 found = re.finditer('<img.*?>', result)
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106 if found:
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107 splitResult = _splitResult(found, result)
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108 for index in range(len(splitResult)):
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109 if splitResult[index].startswith('<img'):
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110 found = re.search('src="(?P<source>.*?)"', splitResult[index])
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111 imageSrc = found.group('source')
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112 imageAlt = None # save alt
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113 found = re.search('alt="(?P<alt>.*?)"', splitResult[index])
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114 if found:
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115 imageAlt = found.group('alt')
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116 splitResult[index] = self.wikiParser.attachment( ('attachment:' + imageSrc, "") )
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117 if imageAlt: # restore alt
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118 splitResult[index] = re.sub('alt=".*?"', 'alt="%s"' % imageAlt, splitResult[index])
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119
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120 result = ''.join(splitResult)
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121
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122
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123 # RESOLVE WikiNames
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124 # if a word is a valid wikiname & a valid wikipage,
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125 # replace word with hyperlink
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126
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127 found = re.finditer(self.wikiParser.word_rule, result)
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128 if found:
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129 splitResult = _splitResult(found, result)
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130
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131 for index in range(len(splitResult)):
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132 if (re.match(self.wikiParser.word_rule, splitResult[index])
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133 and Page.Page(self.request, splitResult[index]).exists()):
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134 splitResult[index] = self.wikiParser._word_repl(splitResult[index])
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135 result = ''.join(splitResult)
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136
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137 # remove stuff that fail HTML 4.01 Strict verification
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138
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139 # remove unsupported attributes
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140 result = re.sub(' target=".*?"| type=".*?"', '', result)
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141 result = re.sub('<hr .*?>', '<hr>', result)
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142
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143 # remove <p>...</p> inside <a>...</a> or <caption>...</caption>
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144 found = re.finditer('<a href=".*?</a>|<caption>.*?</caption>', result) # XXX re.DOTALL)
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145 if found:
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146 splitResult = _splitResult(found, result)
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147 for index in range(len(splitResult)):
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148 if (splitResult[index].startswith('<a href="')
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149 or splitResult[index].startswith('<caption>')):
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150 splitResult[index] = splitResult[index].replace('<p>', '').replace('</p>', '')
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151 result = ''.join(splitResult)
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152
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153 return result
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154
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155
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156
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157 def _compile_xsl(XSLT_FILE, XSLT_COMPILED_FILE):
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158 """
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159 compiling docbook stylesheet
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160
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161 reference: http://155.210.85.193:8010/ccia/nodes/2005-03-18/compileXslt?xslt=/akara/akara.xslt
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162 """
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163 from Ft.Xml.Xslt.Processor import Processor
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164 from Ft.Xml.Xslt import Stylesheet
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165 from Ft.Xml import InputSource
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166 from Ft.Lib import Uri
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167
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168 # New docbook processor
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169 db_processor=Processor()
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170
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171 # Docbook Stylesheet
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172 my_sheet_uri = Uri.OsPathToUri(XSLT_FILE, 1)
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173 sty_isrc = InputSource.DefaultFactory.fromUri(my_sheet_uri)
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174
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175 # Append Stylesheet
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176 db_processor.appendStylesheet(sty_isrc)
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177
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178 # Pickled stylesheet will be self.abs_db_compiled_xsl file
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179 db_root = db_processor.stylesheet.root
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180 fw = file(XSLT_COMPILED_FILE, 'wb')
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181 cPickle.dump(db_root, fw) # , protocol=2)
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182 fw.close()
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183
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184
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185 def _splitResult(iterator, result):
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186 startpos = 0
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187 splitResult = []
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188
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189 for f in iterator:
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190 start, end = f.span()
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191 splitResult.append(result[startpos:start])
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192 splitResult.append(result[start:end])
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193 startpos = end
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194 splitResult.append(result[startpos:])
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195
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196 return splitResult
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197