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annotate genshi/template/markup.py @ 496:f56046e4b0de trunk

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Fix bug introduced in [575]: includes weren't being processed inside match templates.
author cmlenz
date Wed, 30 May 2007 10:05:06 +0000
parents b373f80f7763
children 203bd6a3c93d
rev   line source
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7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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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 import sys
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18 from textwrap import dedent
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19
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20 from genshi.core import Attrs, Namespace, Stream, StreamEventKind
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21 from genshi.core import START, END, START_NS, END_NS, TEXT, PI, COMMENT
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22 from genshi.input import XMLParser
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e29a94b3ba0c Renamed `genshi.template.core` to `genshi.template.base`, mainly to avoid confusion with `genshi.core`.
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23 from genshi.template.base import BadDirectiveError, Template, \
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24 TemplateSyntaxError, _apply_directives, \
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25 INCLUDE, SUB
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26 from genshi.template.eval import Suite
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f37d8e6acdf2 Move string interpolation code into separate module (`genshi.template.interpolation`).
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27 from genshi.template.interpolation import interpolate
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28 from genshi.template.directives import *
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29
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30 if sys.version_info < (2, 4):
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31 _ctxt2dict = lambda ctxt: ctxt.frames[0]
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32 else:
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33 _ctxt2dict = lambda ctxt: ctxt
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34
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35 __all__ = ['MarkupTemplate']
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36 __docformat__ = 'restructuredtext en'
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37
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38
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39 class MarkupTemplate(Template):
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40 """Implementation of the template language for XML-based templates.
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41
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42 >>> tmpl = MarkupTemplate('''<ul xmlns:py="http://genshi.edgewall.org/">
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43 ... <li py:for="item in items">${item}</li>
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44 ... </ul>''')
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45 >>> print tmpl.generate(items=[1, 2, 3])
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46 <ul>
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47 <li>1</li><li>2</li><li>3</li>
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48 </ul>
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49 """
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50 EXEC = StreamEventKind('EXEC')
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51 """Stream event kind representing a Python code suite to execute."""
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52
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53 DIRECTIVE_NAMESPACE = Namespace('http://genshi.edgewall.org/')
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54 XINCLUDE_NAMESPACE = Namespace('http://www.w3.org/2001/XInclude')
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55
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56 directives = [('def', DefDirective),
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57 ('match', MatchDirective),
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58 ('when', WhenDirective),
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59 ('otherwise', OtherwiseDirective),
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60 ('for', ForDirective),
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61 ('if', IfDirective),
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62 ('choose', ChooseDirective),
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63 ('with', WithDirective),
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64 ('replace', ReplaceDirective),
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65 ('content', ContentDirective),
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66 ('attrs', AttrsDirective),
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67 ('strip', StripDirective)]
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68
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69 def __init__(self, source, basedir=None, filename=None, loader=None,
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70 encoding=None, lookup='lenient'):
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71 Template.__init__(self, source, basedir=basedir, filename=filename,
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72 loader=loader, encoding=encoding, lookup=lookup)
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f56046e4b0de Fix bug introduced in [575]: includes weren't being processed inside match templates.
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73 # Make sure the include filter comes after the match filter
f56046e4b0de Fix bug introduced in [575]: includes weren't being processed inside match templates.
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74 if loader:
f56046e4b0de Fix bug introduced in [575]: includes weren't being processed inside match templates.
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75 self.filters.remove(self._include)
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76 self.filters += [self._exec, self._match]
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f56046e4b0de Fix bug introduced in [575]: includes weren't being processed inside match templates.
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77 if loader:
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78 self.filters.append(self._include)
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79
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80 def _parse(self, source, encoding):
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81 streams = [[]] # stacked lists of events of the "compiled" template
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82 dirmap = {} # temporary mapping of directives to elements
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83 ns_prefix = {}
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84 depth = 0
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85 in_fallback = 0
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86 include_href = None
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87
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88 if not isinstance(source, Stream):
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5692bc32ba5f * Better method to propogate the full path to the template file on parse errors. Supersedes r513.
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89 source = XMLParser(source, filename=self.filename,
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90 encoding=encoding)
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91
b146277eb54a `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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92 for kind, data, pos in source:
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93 stream = streams[-1]
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94
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95 if kind is START_NS:
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96 # Strip out the namespace declaration for template directives
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97 prefix, uri = data
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98 ns_prefix[prefix] = uri
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99 if uri not in (self.DIRECTIVE_NAMESPACE,
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100 self.XINCLUDE_NAMESPACE):
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101 stream.append((kind, data, pos))
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102
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103 elif kind is END_NS:
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104 uri = ns_prefix.pop(data, None)
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105 if uri and uri not in (self.DIRECTIVE_NAMESPACE,
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106 self.XINCLUDE_NAMESPACE):
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107 stream.append((kind, data, pos))
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108
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109 elif kind is START:
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110 # Record any directive attributes in start tags
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111 tag, attrs = data
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112 directives = []
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113 strip = False
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114
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115 if tag in self.DIRECTIVE_NAMESPACE:
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116 cls = self._dir_by_name.get(tag.localname)
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117 if cls is None:
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118 raise BadDirectiveError(tag.localname, self.filepath,
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119 pos[1])
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120 value = attrs.get(getattr(cls, 'ATTRIBUTE', None), '')
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121 directives.append((cls, value, ns_prefix.copy(), pos))
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122 strip = True
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123
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124 new_attrs = []
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125 for name, value in attrs:
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126 if name in self.DIRECTIVE_NAMESPACE:
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127 cls = self._dir_by_name.get(name.localname)
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128 if cls is None:
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129 raise BadDirectiveError(name.localname,
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130 self.filepath, pos[1])
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131 directives.append((cls, value, ns_prefix.copy(), pos))
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132 else:
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133 if value:
442
97544725bb7f 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.
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diff changeset
134 value = list(interpolate(value, self.basedir,
97544725bb7f 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.
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parents: 434
diff changeset
135 pos[0], pos[1], pos[2],
97544725bb7f 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
136 lookup=self.lookup))
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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diff changeset
137 if len(value) == 1 and value[0][0] is TEXT:
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138 value = value[0][1]
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diff changeset
139 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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diff changeset
140 value = [(TEXT, u'', pos)]
363
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
141 new_attrs.append((name, value))
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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parents: 362
diff changeset
142 new_attrs = Attrs(new_attrs)
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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diff changeset
143
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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144 if directives:
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diff changeset
145 index = self._dir_order.index
362
fe40d34fb71d 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
146 directives.sort(lambda a, b: cmp(index(a[0]), index(b[0])))
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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147 dirmap[(depth, tag)] = (directives, len(stream), strip)
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148
363
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diff changeset
149 if tag in self.XINCLUDE_NAMESPACE:
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
150 if tag.localname == 'include':
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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parents: 362
diff changeset
151 include_href = new_attrs.get('href')
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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parents: 362
diff changeset
152 if not include_href:
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
153 raise TemplateSyntaxError('Include misses required '
422
5d08a744636e More work to include absolute file paths in exceptions.
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diff changeset
154 'attribute "href"',
5d08a744636e More work to include absolute file paths in exceptions.
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diff changeset
155 self.filepath, *pos[1:])
381
b9fc7a1f76ca 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
156 streams.append([])
363
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diff changeset
157 elif tag.localname == 'fallback':
381
b9fc7a1f76ca 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
158 in_fallback += 1
363
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diff changeset
159
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
160 else:
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
161 stream.append((kind, (tag, new_attrs), pos))
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
162
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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163 depth += 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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164
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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165 elif kind is END:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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166 depth -= 1
363
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
167
381
b9fc7a1f76ca 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
168 if in_fallback and data == self.XINCLUDE_NAMESPACE['fallback']:
b9fc7a1f76ca 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
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diff changeset
169 in_fallback -= 1
363
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
170 elif data == self.XINCLUDE_NAMESPACE['include']:
381
b9fc7a1f76ca 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
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diff changeset
171 fallback = streams.pop()
b9fc7a1f76ca 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
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diff changeset
172 stream = streams[-1]
b9fc7a1f76ca 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
173 stream.append((INCLUDE, (include_href, fallback), pos))
363
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
cmlenz
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diff changeset
174 else:
37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead.
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diff changeset
175 stream.append((kind, data, pos))
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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diff changeset
176
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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177 # If there have have directive attributes with the corresponding
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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178 # start tag, move the events inbetween into a "subprogram"
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
179 if (depth, data) in dirmap:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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diff changeset
180 directives, start_offset, strip = dirmap.pop((depth, data))
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
181 substream = stream[start_offset:]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
182 if strip:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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parents:
diff changeset
183 substream = substream[1:-1]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
184 stream[start_offset:] = [(SUB, (directives, substream),
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
185 pos)]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
186
405
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
187 elif kind is PI and data[0] == 'python':
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
188 try:
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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parents: 400
diff changeset
189 # As Expat doesn't report whitespace between the PI target
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
190 # and the data, we have to jump through some hoops here to
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
191 # get correctly indented Python code
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
192 # Unfortunately, we'll still probably not get the line
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
193 # number quite right
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
194 lines = [line.expandtabs() for line in data[1].splitlines()]
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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parents: 400
diff changeset
195 first = lines[0]
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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diff changeset
196 rest = dedent('\n'.join(lines[1:]))
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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parents: 400
diff changeset
197 if first.rstrip().endswith(':') and not rest[0].isspace():
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
198 rest = '\n'.join([' ' + line for line
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
199 in rest.splitlines()])
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
200 source = '\n'.join([first, rest])
442
97544725bb7f 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 suite = Suite(source, self.filepath, pos[1],
97544725bb7f 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 lookup=self.lookup)
405
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
203 except SyntaxError, err:
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
204 raise TemplateSyntaxError(err, self.filepath,
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
205 pos[1] + (err.lineno or 1) - 1,
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
206 pos[2] + (err.offset or 0))
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
207 stream.append((EXEC, suite, pos))
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
208
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
209 elif kind is TEXT:
442
97544725bb7f 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
210 for kind, data, pos in interpolate(data, self.basedir, pos[0],
97544725bb7f 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
211 pos[1], pos[2],
97544725bb7f 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
212 lookup=self.lookup):
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
213 stream.append((kind, data, pos))
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
214
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
215 elif kind is COMMENT:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
216 if not data.lstrip().startswith('!'):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
217 stream.append((kind, data, pos))
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
218
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
219 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
220 stream.append((kind, data, pos))
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
221
381
b9fc7a1f76ca 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
222 assert len(streams) == 1
b9fc7a1f76ca 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
223 return streams[0]
b9fc7a1f76ca 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
224
405
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
225 def _exec(self, stream, ctxt):
425
073640758a42 Try to use proper reStructuredText for docstrings throughout.
cmlenz
parents: 422
diff changeset
226 """Internal stream filter that executes code in ``<?python ?>``
073640758a42 Try to use proper reStructuredText for docstrings throughout.
cmlenz
parents: 422
diff changeset
227 processing instructions.
405
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
228 """
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
229 for event in stream:
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
230 if event[0] is EXEC:
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
231 event[1].execute(_ctxt2dict(ctxt))
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
232 else:
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
233 yield event
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
cmlenz
parents: 400
diff changeset
234
336
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
235 def _match(self, stream, ctxt, match_templates=None):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
236 """Internal stream filter that applies any defined match templates
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
237 to the stream.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
238 """
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
239 if match_templates is None:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
240 match_templates = ctxt._match_templates
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
241
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
242 tail = []
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
243 def _strip(stream):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
244 depth = 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
245 while 1:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
246 event = stream.next()
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
247 if event[0] is START:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
248 depth += 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
249 elif event[0] is END:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
250 depth -= 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
251 if depth > 0:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
252 yield event
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
253 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
254 tail[:] = [event]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
255 break
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
256
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
257 for event in stream:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
258
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
259 # We (currently) only care about start and end events for matching
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
260 # We might care about namespace events in the future, though
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
261 if not match_templates or (event[0] is not START and
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
262 event[0] is not END):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
263 yield event
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
264 continue
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
265
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
cmlenz
parents:
diff changeset
266 for idx, (test, path, template, namespaces, directives) in \
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file.
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267 enumerate(match_templates):
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268
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269 if test(event, namespaces, ctxt) is True:
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270
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271 # Let the remaining match templates know about the event so
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272 # they get a chance to update their internal state
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273 for test in [mt[0] for mt in match_templates[idx + 1:]]:
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274 test(event, namespaces, ctxt, updateonly=True)
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275
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276 # Consume and store all events until an end event
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277 # corresponding to this start event is encountered
364
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278 content = chain([event],
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279 self._match(_strip(stream), ctxt,
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280 [match_templates[idx]]),
336
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281 tail)
363
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282 content = list(self._include(content, ctxt))
336
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283
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284 for test in [mt[0] for mt in match_templates]:
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285 test(tail[0], namespaces, ctxt, updateonly=True)
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286
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287 # Make the select() function available in the body of the
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288 # match template
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289 def select(path):
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290 return Stream(content).select(path, namespaces, ctxt)
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291 ctxt.push(dict(select=select))
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292
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293 # Recursively process the output
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294 template = _apply_directives(template, ctxt, directives)
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295 for event in self._match(self._eval(self._flatten(template,
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296 ctxt),
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297 ctxt), ctxt,
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298 match_templates[:idx] +
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299 match_templates[idx + 1:]):
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300 yield event
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301
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302 ctxt.pop()
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303 break
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304
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305 else: # no matches
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306 yield event
363
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307
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308
405
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84.
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309 EXEC = MarkupTemplate.EXEC
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