annotate genshi/template/markup.py @ 609:237050080827

Add support for Python code blocks in text templates using the new syntax.
author cmlenz
date Mon, 27 Aug 2007 22:39:01 +0000
parents 9ada030ad986
children 6a37018199fd
rev   line source
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1 # -*- coding: utf-8 -*-
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2 #
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3 # Copyright (C) 2006-2007 Edgewall Software
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4 # All rights reserved.
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5 #
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6 # This software is licensed as described in the file COPYING, which
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7 # you should have received as part of this distribution. The terms
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8 # are also available at http://genshi.edgewall.org/wiki/License.
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9 #
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10 # This software consists of voluntary contributions made by many
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11 # individuals. For the exact contribution history, see the revision
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12 # history and logs, available at http://genshi.edgewall.org/log/.
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13
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14 """Markup templating engine."""
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15
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16 from itertools import chain
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17
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18 from genshi.core import Attrs, Namespace, Stream, StreamEventKind
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bd5da099c113 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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19 from genshi.core import START, END, START_NS, END_NS, TEXT, PI, COMMENT
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20 from genshi.input import XMLParser
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8dd0d34a9fb7 Renamed `genshi.template.core` to `genshi.template.base`, mainly to avoid confusion with `genshi.core`.
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21 from genshi.template.base import BadDirectiveError, Template, \
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bb939ed3058c Added include directive for text templates (#115). Thanks to Alastair for the original patch.
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22 TemplateSyntaxError, _apply_directives, \
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23 EXEC, INCLUDE, SUB
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24 from genshi.template.eval import Suite
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25 from genshi.template.interpolation import interpolate
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26 from genshi.template.directives import *
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27
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28 __all__ = ['MarkupTemplate']
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29 __docformat__ = 'restructuredtext en'
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30
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31
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32 class MarkupTemplate(Template):
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33 """Implementation of the template language for XML-based templates.
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34
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35 >>> tmpl = MarkupTemplate('''<ul xmlns:py="http://genshi.edgewall.org/">
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36 ... <li py:for="item in items">${item}</li>
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37 ... </ul>''')
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38 >>> print tmpl.generate(items=[1, 2, 3])
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39 <ul>
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40 <li>1</li><li>2</li><li>3</li>
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41 </ul>
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42 """
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43
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44 DIRECTIVE_NAMESPACE = Namespace('http://genshi.edgewall.org/')
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45 XINCLUDE_NAMESPACE = Namespace('http://www.w3.org/2001/XInclude')
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46
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47 directives = [('def', DefDirective),
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48 ('match', MatchDirective),
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49 ('when', WhenDirective),
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50 ('otherwise', OtherwiseDirective),
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51 ('for', ForDirective),
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52 ('if', IfDirective),
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53 ('choose', ChooseDirective),
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54 ('with', WithDirective),
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55 ('replace', ReplaceDirective),
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56 ('content', ContentDirective),
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57 ('attrs', AttrsDirective),
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58 ('strip', StripDirective)]
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bc5faca93699 Text templates now default to rendering as plain text; it is no longer necessary to explicitly specify the "text" method to the `render()` or `serialize()` method of the generated markup stream. See tickets #62 and #118.
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59 serializer = 'xml'
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60
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61 def __init__(self, source, basedir=None, filename=None, loader=None,
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62 encoding=None, lookup='strict', allow_exec=True):
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63 Template.__init__(self, source, basedir=basedir, filename=filename,
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6e21c89d9255 Support for Python code blocks in templates can now be disabled. Closes #123.
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64 loader=loader, encoding=encoding, lookup=lookup,
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65 allow_exec=allow_exec)
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782931585925 Fix bug introduced in [575]: includes weren't being processed inside match templates.
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66 # Make sure the include filter comes after the match filter
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67 if loader:
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68 self.filters.remove(self._include)
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69 self.filters += [self._match]
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70 if loader:
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71 self.filters.append(self._include)
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72
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ca46dc9c7761 `MarkupTemplate`s can now be instantiated from markup streams, in addition to strings and file-like objects. Thanks to David Fraser for the patch. Closes #69.
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73 def _parse(self, source, encoding):
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74 streams = [[]] # stacked lists of events of the "compiled" template
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75 dirmap = {} # temporary mapping of directives to elements
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76 ns_prefix = {}
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77 depth = 0
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78 fallbacks = []
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79 includes = []
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80
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81 if not isinstance(source, Stream):
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82 source = XMLParser(source, filename=self.filename,
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83 encoding=encoding)
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ca46dc9c7761 `MarkupTemplate`s can now be instantiated from markup streams, in addition to strings and file-like objects. Thanks to David Fraser for the patch. Closes #69.
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85 for kind, data, pos in source:
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86 stream = streams[-1]
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87
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88 if kind is START_NS:
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89 # Strip out the namespace declaration for template directives
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90 prefix, uri = data
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91 ns_prefix[prefix] = uri
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92 if uri not in (self.DIRECTIVE_NAMESPACE,
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93 self.XINCLUDE_NAMESPACE):
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94 stream.append((kind, data, pos))
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95
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96 elif kind is END_NS:
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97 uri = ns_prefix.pop(data, None)
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98 if uri and uri not in (self.DIRECTIVE_NAMESPACE,
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99 self.XINCLUDE_NAMESPACE):
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100 stream.append((kind, data, pos))
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101
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102 elif kind is START:
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103 # Record any directive attributes in start tags
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104 tag, attrs = data
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105 directives = []
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106 strip = False
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107
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108 if tag in self.DIRECTIVE_NAMESPACE:
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109 cls = self._dir_by_name.get(tag.localname)
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110 if cls is None:
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111 raise BadDirectiveError(tag.localname, self.filepath,
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112 pos[1])
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113 args = dict([(name.localname, value) for name, value
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114 in attrs if not name.namespace])
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115 directives.append((cls, args, ns_prefix.copy(), pos))
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116 strip = True
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117
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118 new_attrs = []
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119 for name, value in attrs:
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120 if name in self.DIRECTIVE_NAMESPACE:
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121 cls = self._dir_by_name.get(name.localname)
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122 if cls is None:
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123 raise BadDirectiveError(name.localname,
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124 self.filepath, pos[1])
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0910d5978f45 Follow-up to [431]: directives are no longer instantiated directly at parse time, but instead by the `attach()` method of the directive class (which replaces the `prepare()` method).
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125 directives.append((cls, value, ns_prefix.copy(), pos))
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126 else:
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127 if value:
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128 value = list(interpolate(value, self.basedir,
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129 pos[0], pos[1], pos[2],
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130 lookup=self.lookup))
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131 if len(value) == 1 and value[0][0] is TEXT:
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132 value = value[0][1]
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133 else:
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diff changeset
134 value = [(TEXT, u'', pos)]
363
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
135 new_attrs.append((name, value))
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
136 new_attrs = Attrs(new_attrs)
336
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137
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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138 if directives:
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139 index = self._dir_order.index
362
0910d5978f45 Follow-up to [431]: directives are no longer instantiated directly at parse time, but instead by the `attach()` method of the directive class (which replaces the `prepare()` method).
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diff changeset
140 directives.sort(lambda a, b: cmp(index(a[0]), index(b[0])))
336
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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141 dirmap[(depth, tag)] = (directives, len(stream), strip)
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142
363
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
143 if tag in self.XINCLUDE_NAMESPACE:
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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parents: 362
diff changeset
144 if tag.localname == 'include':
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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parents: 362
diff changeset
145 include_href = new_attrs.get('href')
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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parents: 362
diff changeset
146 if not include_href:
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
147 raise TemplateSyntaxError('Include misses required '
422
95089b6e37ca More work to include absolute file paths in exceptions.
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diff changeset
148 'attribute "href"',
95089b6e37ca More work to include absolute file paths in exceptions.
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diff changeset
149 self.filepath, *pos[1:])
590
880b1a75d046 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
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150 includes.append(include_href)
381
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diff changeset
151 streams.append([])
363
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
152 elif tag.localname == 'fallback':
590
880b1a75d046 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
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diff changeset
153 streams.append([])
880b1a75d046 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
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diff changeset
154 fallbacks.append(streams[-1])
363
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diff changeset
155
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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parents: 362
diff changeset
156 else:
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diff changeset
157 stream.append((kind, (tag, new_attrs), pos))
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
158
336
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159 depth += 1
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160
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161 elif kind is END:
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162 depth -= 1
363
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
163
590
880b1a75d046 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
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parents: 552
diff changeset
164 if fallbacks and data == self.XINCLUDE_NAMESPACE['fallback']:
880b1a75d046 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
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diff changeset
165 assert streams.pop() is fallbacks[-1]
363
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diff changeset
166 elif data == self.XINCLUDE_NAMESPACE['include']:
590
880b1a75d046 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
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diff changeset
167 fallback = None
880b1a75d046 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
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parents: 552
diff changeset
168 if len(fallbacks) == len(includes):
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diff changeset
169 fallback = fallbacks.pop()
880b1a75d046 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
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diff changeset
170 streams.pop() # discard anything between the include tags
880b1a75d046 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
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diff changeset
171 # and the fallback element
381
a6c2a9cd2e92 Fix for #80: fallback only shown when the template to include wasn't found. In addition, the nesting of includes and fallback content should work correctly, and directives/expressions/etc inside fallback content are processed. Thanks to Christian Boos for the original patch and unit tests.
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diff changeset
172 stream = streams[-1]
590
880b1a75d046 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided.
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diff changeset
173 stream.append((INCLUDE, (includes.pop(), fallback), pos))
363
caf7b68ab5dc Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
174 else:
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diff changeset
175 stream.append((kind, data, pos))
336
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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176
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177 # If there have have directive attributes with the corresponding
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178 # start tag, move the events inbetween into a "subprogram"
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179 if (depth, data) in dirmap:
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180 directives, start_offset, strip = dirmap.pop((depth, data))
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181 substream = stream[start_offset:]
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182 if strip:
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183 substream = substream[1:-1]
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184 stream[start_offset:] = [(SUB, (directives, substream),
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185 pos)]
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186
405
bd5da099c113 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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parents: 400
diff changeset
187 elif kind is PI and data[0] == 'python':
545
6e21c89d9255 Support for Python code blocks in templates can now be disabled. Closes #123.
cmlenz
parents: 520
diff changeset
188 if not self.allow_exec:
6e21c89d9255 Support for Python code blocks in templates can now be disabled. Closes #123.
cmlenz
parents: 520
diff changeset
189 raise TemplateSyntaxError('Python code blocks not allowed',
6e21c89d9255 Support for Python code blocks in templates can now be disabled. Closes #123.
cmlenz
parents: 520
diff changeset
190 self.filepath, *pos[1:])
405
bd5da099c113 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
191 try:
601
9ae986bcba9a Simplify implementation of `py:with` directive by compiling to a `Suite`, instead of manually breaking up the statement and compiling each part to an `Expression`. Also, the first line of code in a `Suite` is now stored as the "function name" of the bytecode, so that it shows up in tracebacks.
cmlenz
parents: 590
diff changeset
192 suite = Suite(data[1], self.filepath, pos[1],
442
ff7c72b52fb2 Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option.
cmlenz
parents: 434
diff changeset
193 lookup=self.lookup)
405
bd5da099c113 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
194 except SyntaxError, err:
bd5da099c113 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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parents: 400
diff changeset
195 raise TemplateSyntaxError(err, self.filepath,
bd5da099c113 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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parents: 400
diff changeset
196 pos[1] + (err.lineno or 1) - 1,
bd5da099c113 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
197 pos[2] + (err.offset or 0))
bd5da099c113 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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parents: 400
diff changeset
198 stream.append((EXEC, suite, pos))
bd5da099c113 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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parents: 400
diff changeset
199
336
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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200 elif kind is TEXT:
442
ff7c72b52fb2 Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option.
cmlenz
parents: 434
diff changeset
201 for kind, data, pos in interpolate(data, self.basedir, pos[0],
ff7c72b52fb2 Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option.
cmlenz
parents: 434
diff changeset
202 pos[1], pos[2],
ff7c72b52fb2 Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option.
cmlenz
parents: 434
diff changeset
203 lookup=self.lookup):
336
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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diff changeset
204 stream.append((kind, data, pos))
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
205
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
206 elif kind is COMMENT:
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
207 if not data.lstrip().startswith('!'):
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
208 stream.append((kind, data, pos))
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
209
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
210 else:
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
211 stream.append((kind, data, pos))
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
212
381
a6c2a9cd2e92 Fix for #80: fallback only shown when the template to include wasn't found. In addition, the nesting of includes and fallback content should work correctly, and directives/expressions/etc inside fallback content are processed. Thanks to Christian Boos for the original patch and unit tests.
cmlenz
parents: 374
diff changeset
213 assert len(streams) == 1
a6c2a9cd2e92 Fix for #80: fallback only shown when the template to include wasn't found. In addition, the nesting of includes and fallback content should work correctly, and directives/expressions/etc inside fallback content are processed. Thanks to Christian Boos for the original patch and unit tests.
cmlenz
parents: 374
diff changeset
214 return streams[0]
a6c2a9cd2e92 Fix for #80: fallback only shown when the template to include wasn't found. In addition, the nesting of includes and fallback content should work correctly, and directives/expressions/etc inside fallback content are processed. Thanks to Christian Boos for the original patch and unit tests.
cmlenz
parents: 374
diff changeset
215
336
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
216 def _match(self, stream, ctxt, match_templates=None):
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
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217 """Internal stream filter that applies any defined match templates
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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diff changeset
218 to the stream.
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diff changeset
219 """
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220 if match_templates is None:
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
221 match_templates = ctxt._match_templates
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
222
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
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diff changeset
223 tail = []
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
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224 def _strip(stream):
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
225 depth = 1
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
226 while 1:
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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diff changeset
227 event = stream.next()
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
228 if event[0] is START:
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
229 depth += 1
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
230 elif event[0] is END:
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
231 depth -= 1
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
232 if depth > 0:
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
233 yield event
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
234 else:
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
235 tail[:] = [event]
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
236 break
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
237
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
238 for event in stream:
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
239
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
240 # We (currently) only care about start and end events for matching
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
241 # We might care about namespace events in the future, though
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
242 if not match_templates or (event[0] is not START and
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
243 event[0] is not END):
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
244 yield event
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
245 continue
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
246
602
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
247 for idx, (test, path, template, hints, namespaces, directives) \
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
248 in enumerate(match_templates):
336
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
249
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
250 if test(event, namespaces, ctxt) is True:
602
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
251 if 'match_once' in hints:
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
252 del match_templates[idx]
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
253 idx -= 1
336
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
254
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
255 # Let the remaining match templates know about the event so
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
256 # they get a chance to update their internal state
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
257 for test in [mt[0] for mt in match_templates[idx + 1:]]:
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
258 test(event, namespaces, ctxt, updateonly=True)
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
259
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
260 # Consume and store all events until an end event
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
261 # corresponding to this start event is encountered
602
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
262 inner = _strip(stream)
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
263 if 'match_once' not in hints \
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
264 and 'not_recursive' not in hints:
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
265 inner = self._match(inner, ctxt, [match_templates[idx]])
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
266 content = list(self._include(chain([event], inner, tail),
509b3a5e765e Add runtime optimization hints for match templates.
cmlenz
parents: 601
diff changeset
267 ctxt))
336
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
268
5f2c7782cd8a Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
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269 for test in [mt[0] for mt in match_templates]:
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270 test(tail[0], namespaces, ctxt, updateonly=True)
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271
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272 # Make the select() function available in the body of the
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273 # match template
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274 def select(path):
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275 return Stream(content).select(path, namespaces, ctxt)
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276 ctxt.push(dict(select=select))
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277
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278 # Recursively process the output
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279 template = _apply_directives(template, ctxt, directives)
602
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280 remaining = match_templates
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281 if 'match_once' not in hints:
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282 remaining = remaining[:idx] + remaining[idx + 1:]
336
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283 for event in self._match(self._eval(self._flatten(template,
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284 ctxt),
602
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285 ctxt), ctxt, remaining):
336
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286 yield event
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287
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288 ctxt.pop()
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289 break
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290
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291 else: # no matches
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292 yield event
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