Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/docutils/writers/docutils_xml.py @ 3:758bc20232e8 draft

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"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:20:52 -0400
parents 26e78fe6e8c4
children
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1 # $Id: docutils_xml.py 8368 2019-08-27 12:10:14Z milde $
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2 # Author: David Goodger, Paul Tremblay, Guenter Milde
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3 # Maintainer: docutils-develop@lists.sourceforge.net
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4 # Copyright: This module has been placed in the public domain.
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5
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6 """
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7 Simple document tree Writer, writes Docutils XML according to
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8 http://docutils.sourceforge.net/docs/ref/docutils.dtd.
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9 """
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10
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11 __docformat__ = 'reStructuredText'
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12
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13 import sys
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14 import xml.sax.saxutils
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15
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16 import docutils
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17 from docutils import frontend, writers, nodes
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18
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19 if sys.version_info >= (3, 0):
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20 from io import StringIO # noqa
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21 else:
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22 from StringIO import StringIO # noqa
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23
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24
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25 if sys.version_info >= (3, 0):
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26 unicode = str # noqa
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27
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28
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29 class RawXmlError(docutils.ApplicationError): pass
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30
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31
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32 class Writer(writers.Writer):
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33
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34 supported = ('xml',)
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35 """Formats this writer supports."""
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36
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37 settings_spec = (
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38 '"Docutils XML" Writer Options',
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39 None,
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40 (('Generate XML with newlines before and after tags.',
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41 ['--newlines'],
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42 {'action': 'store_true', 'validator': frontend.validate_boolean}),
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43 ('Generate XML with indents and newlines.',
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44 ['--indents'], #@ TODO use integer value for number of spaces?
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45 {'action': 'store_true', 'validator': frontend.validate_boolean}),
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46 ('Omit the XML declaration. Use with caution.',
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47 ['--no-xml-declaration'],
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48 {'dest': 'xml_declaration', 'default': 1, 'action': 'store_false',
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49 'validator': frontend.validate_boolean}),
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50 ('Omit the DOCTYPE declaration.',
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51 ['--no-doctype'],
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52 {'dest': 'doctype_declaration', 'default': 1,
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53 'action': 'store_false', 'validator': frontend.validate_boolean}),))
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54
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55 settings_defaults = {'output_encoding_error_handler': 'xmlcharrefreplace'}
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56
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57 config_section = 'docutils_xml writer'
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58 config_section_dependencies = ('writers',)
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59
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60 output = None
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61 """Final translated form of `document`."""
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62
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63 def __init__(self):
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64 writers.Writer.__init__(self)
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65 self.translator_class = XMLTranslator
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66
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67 def translate(self):
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68 self.visitor = visitor = self.translator_class(self.document)
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69 self.document.walkabout(visitor)
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70 self.output = ''.join(visitor.output)
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71
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72
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73 class XMLTranslator(nodes.GenericNodeVisitor):
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74
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75 xml_declaration = '<?xml version="1.0" encoding="%s"?>\n'
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76 # TODO: add stylesheet options similar to HTML and LaTeX writers?
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77 #xml_stylesheet = '<?xml-stylesheet type="text/xsl" href="%s"?>\n'
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78 doctype = (
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79 '<!DOCTYPE document PUBLIC'
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80 ' "+//IDN docutils.sourceforge.net//DTD Docutils Generic//EN//XML"'
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81 ' "http://docutils.sourceforge.net/docs/ref/docutils.dtd">\n')
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82 generator = '<!-- Generated by Docutils %s -->\n'
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83
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84 xmlparser = xml.sax.make_parser()
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85 """SAX parser instance to check/exctract raw XML."""
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86 xmlparser.setFeature(
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87 "http://xml.org/sax/features/external-general-entities", True)
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88
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89 def __init__(self, document):
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90 nodes.NodeVisitor.__init__(self, document)
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91
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92 # Reporter
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93 self.warn = self.document.reporter.warning
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94 self.error = self.document.reporter.error
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95
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96 # Settings
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97 self.settings = settings = document.settings
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98 self.indent = self.newline = ''
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99 if settings.newlines:
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100 self.newline = '\n'
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101 if settings.indents:
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102 self.newline = '\n'
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103 self.indent = ' ' #@ TODO make this configurable?
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104 self.level = 0 # indentation level
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105 self.in_simple = 0 # level of nesting inside mixed-content elements
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106 self.fixed_text = 0 # level of nesting inside FixedText elements
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107
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108 # Output
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109 self.output = []
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110 if settings.xml_declaration:
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111 self.output.append(
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112 self.xml_declaration % settings.output_encoding)
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113 if settings.doctype_declaration:
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114 self.output.append(self.doctype)
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115 self.output.append(self.generator % docutils.__version__)
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116
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117 # initialize XML parser
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118 self.the_handle=TestXml()
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119 self.xmlparser.setContentHandler(self.the_handle)
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120
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121 # generic visit and depart methods
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122 # --------------------------------
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123
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124 simple_nodes = (nodes.TextElement,
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125 nodes.image, nodes.colspec, nodes.transition) # empty elements
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126
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127 def default_visit(self, node):
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128 """Default node visit method."""
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129 if not self.in_simple:
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130 self.output.append(self.indent*self.level)
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131 self.output.append(node.starttag(xml.sax.saxutils.quoteattr))
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132 self.level += 1
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133 # @@ make nodes.literal an instance of FixedTextElement?
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134 if isinstance(node, (nodes.FixedTextElement, nodes.literal)):
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135 self.fixed_text += 1
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136 if isinstance(node, self.simple_nodes):
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137 self.in_simple += 1
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138 if not self.in_simple:
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139 self.output.append(self.newline)
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140
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141 def default_departure(self, node):
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142 """Default node depart method."""
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143 self.level -= 1
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144 if not self.in_simple:
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145 self.output.append(self.indent*self.level)
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146 self.output.append(node.endtag())
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147 if isinstance(node, (nodes.FixedTextElement, nodes.literal)):
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148 self.fixed_text -= 1
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149 if isinstance(node, self.simple_nodes):
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150 self.in_simple -= 1
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151 if not self.in_simple:
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152 self.output.append(self.newline)
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153
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154
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155 # specific visit and depart methods
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156 # ---------------------------------
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157
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158 def visit_Text(self, node):
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159 text = xml.sax.saxutils.escape(node.astext())
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160 # indent text if we are not in a FixedText element:
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161 if not self.fixed_text:
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162 text = text.replace('\n', '\n'+self.indent*self.level)
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163 self.output.append(text)
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164
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165 def depart_Text(self, node):
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166 pass
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167
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168 def visit_raw(self, node):
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169 if 'xml' not in node.get('format', '').split():
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170 # skip other raw content?
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171 # raise nodes.SkipNode
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172 self.default_visit(node)
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173 return
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174 # wrap in <raw> element
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175 self.default_visit(node) # or not?
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176 xml_string = node.astext()
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177 self.output.append(xml_string)
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178 self.default_departure(node) # or not?
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179 # Check validity of raw XML:
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180 if isinstance(xml_string, unicode) and sys.version_info < (3, 0):
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181 xml_string = xml_string.encode('utf8')
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182 try:
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183 self.xmlparser.parse(StringIO(xml_string))
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184 except xml.sax._exceptions.SAXParseException as error:
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185 col_num = self.the_handle.locator.getColumnNumber()
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186 line_num = self.the_handle.locator.getLineNumber()
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187 srcline = node.line
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188 if not isinstance(node.parent, nodes.TextElement):
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189 srcline += 2 # directive content start line
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190 msg = 'Invalid raw XML in column %d, line offset %d:\n%s' % (
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191 col_num, line_num, node.astext())
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192 self.warn(msg, source=node.source, line=srcline+line_num-1)
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193 raise nodes.SkipNode # content already processed
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194
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195
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196 class TestXml(xml.sax.handler.ContentHandler):
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197
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198 def setDocumentLocator(self, locator):
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199 self.locator = locator