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annotate piecrust/sources/fs.py @ 862:fddaf43424e2

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refactor: Get the page assets to work again in the server.
author Ludovic Chabant <ludovic@chabant.com>
date Thu, 08 Jun 2017 23:09:34 -0700
parents 448710d84121
children d9059257743c
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1 import os.path
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2 import re
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3 import glob
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4 import fnmatch
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5 import logging
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6 from piecrust import osutil
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7 from piecrust.routing import RouteParameter
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8 from piecrust.sources.base import (
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9 ContentItem, ContentGroup, ContentSource,
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10 REL_LOGICAL_PARENT_ITEM, REL_LOGICAl_CHILD_GROUP)
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12
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13 logger = logging.getLogger(__name__)
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14
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15
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16 class InvalidFileSystemEndpointError(Exception):
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17 def __init__(self, source_name, fs_endpoint):
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18 super(InvalidFileSystemEndpointError, self).__init__(
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19 "Invalid file-system endpoint for source '%s': %s" %
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20 (source_name, fs_endpoint))
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21
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22
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23 def _filter_crap_files(f):
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24 return (f[-1] != '~' and # Vim temp files and what-not
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25 f not in ['.DS_Store', 'Thumbs.db']) # OSX and Windows bullshit
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26
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27
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28 class FSContentSourceBase(ContentSource):
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29 """ Implements some basic stuff for a `ContentSource` that stores its
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30 items as files on disk.
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31 """
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32 def __init__(self, app, name, config):
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33 super().__init__(app, name, config)
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34 self.fs_endpoint = config.get('fs_endpoint', name)
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35 self.fs_endpoint_path = os.path.join(self.root_dir, self.fs_endpoint)
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36
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37 @property
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38 def root_dir(self):
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39 if self.is_theme_source:
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40 return self.app.theme_dir
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41 return self.app.root_dir
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42
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43 def _checkFSEndpoint(self):
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44 if not os.path.isdir(self.fs_endpoint_path):
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45 if self.config.get('ignore_missing_dir'):
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46 return False
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47 raise InvalidFileSystemEndpointError(self.name,
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48 self.fs_endpoint_path)
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49 return True
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50
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51 def openItem(self, item, mode='r', encoding=None):
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52 for m in 'wxa+':
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53 if m in mode:
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54 # If opening the file for writing, let's make sure the
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55 # directory exists.
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56 dirname = os.path.dirname(item.spec)
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57 if not os.path.exists(dirname):
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58 os.makedirs(dirname, 0o755)
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59 break
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60 return open(item.spec, mode, encoding=encoding)
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61
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62 def getItemMtime(self, item):
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63 return os.path.getmtime(item.spec)
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64
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65 def describe(self):
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66 return {'endpoint_path': self.fs_endpoint_path}
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67
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68
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69 class FSContentSource(FSContentSourceBase):
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70 """ Implements a `ContentSource` that simply returns files on disk
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71 under a given root directory.
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72 """
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73 SOURCE_NAME = 'fs'
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74
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75 def __init__(self, app, name, config):
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76 super().__init__(app, name, config)
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77
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78 config.setdefault('data_type', 'asset_iterator')
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79
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80 ig, ir = _parse_ignores(config.get('ignore'))
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81 self._ignore_globs = ig
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82 self._ignore_regexes = ir
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83
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84 def getContents(self, group):
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85 if not self._checkFSEndpoint():
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86 return None
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87
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88 parent_path = self.fs_endpoint_path
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89 if group is not None:
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90 parent_path = group.spec
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91
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92 names = filter(_filter_crap_files, osutil.listdir(parent_path))
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93
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94 final_names = []
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95 for name in names:
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96 path = os.path.join(parent_path, name)
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97 if not self._filterIgnored(path):
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98 final_names.append(name)
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99
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100 items = []
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101 groups = []
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102 for name in final_names:
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103 path = os.path.join(parent_path, name)
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104 if os.path.isdir(path):
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105 metadata = self._createGroupMetadata(path)
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106 groups.append(ContentGroup(path, metadata))
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107 else:
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108 metadata = self._createItemMetadata(path)
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109 items.append(ContentItem(path, metadata))
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110 self._finalizeContent(group, items, groups)
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111 return items + groups
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112
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113 def getParentGroup(self, item):
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114 parent_dir = os.path.dirname(item.spec)
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115 if len(parent_dir) >= len(self.fs_endpoint_path):
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116 metadata = self._createGroupMetadata(parent_dir)
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117 return ContentGroup(parent_dir, metadata)
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118
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119 # Don't return a group for paths that are outside of our
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120 # endpoint directory.
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121 return None
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122
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123 def _filterIgnored(self, path):
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124 rel_path = os.path.relpath(path, self.fs_endpoint_path)
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125 for g in self._ignore_globs:
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126 if fnmatch.fnmatch(rel_path, g):
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127 return True
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128 for r in self._ignore_regexes:
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129 if r.search(g):
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130 return True
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131 return False
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132
852
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133 def _createGroupMetadata(self, path):
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134 return {}
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135
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136 def _createItemMetadata(self, path):
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137 return {}
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138
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139 def _finalizeContent(self, parent_group, items, groups):
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140 pass
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141
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142 def getRelatedContents(self, item, relationship):
854
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143 if relationship == REL_LOGICAL_PARENT_ITEM:
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144 # If we want the logical parent item of a folder, we find a
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145 # page file with the same name as the folder.
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146 if not item.is_group:
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147 raise ValueError()
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148 parent_glob = os.path.join(item.spec, '*')
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149 for n in glob.iglob(parent_glob):
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150 if os.path.isfile(n):
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151 metadata = self._createItemMetadata(n)
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152 return ContentItem(n, metadata)
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153 return None
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154
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155 if relationship == REL_LOGICAl_CHILD_GROUP:
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156 # If we want the children items of an item, we look for
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157 # a directory that has the same name as the item's file.
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diff changeset
158 if item.is_group:
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diff changeset
159 raise ValueError()
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diff changeset
160 dir_path, _ = os.path.splitext(item.spec)
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diff changeset
161 if os.path.isdir(dir_path):
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162 metadata = self._createGroupMetadata(dir_path)
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163 return [ContentGroup(dir_path, metadata)]
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164 return None
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diff changeset
165
852
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166 return None
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diff changeset
167
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diff changeset
168 def findContent(self, route_params):
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diff changeset
169 rel_path = route_params['path']
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170 path = os.path.join(self.fs_endpoint_path, rel_path)
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diff changeset
171 metadata = self._createItemMetadata(path)
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diff changeset
172 return ContentItem(path, metadata)
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diff changeset
173
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diff changeset
174 def getSupportedRouteParameters(self):
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175 return [
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diff changeset
176 RouteParameter('path', RouteParameter.TYPE_PATH)]
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diff changeset
177
853
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diff changeset
178
f070a4fc033c core: Continue PieCrust3 refactor, simplify pages.
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diff changeset
179 def _parse_ignores(patterns):
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diff changeset
180 globs = []
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diff changeset
181 regexes = []
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diff changeset
182 if patterns:
f070a4fc033c core: Continue PieCrust3 refactor, simplify pages.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
183 for pat in patterns:
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Ludovic Chabant <ludovic@chabant.com>
parents: 852
diff changeset
184 if len(pat) > 2 and pat[0] == '/' and pat[-1] == '/':
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Ludovic Chabant <ludovic@chabant.com>
parents: 852
diff changeset
185 regexes.append(re.compile(pat[1:-1]))
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parents: 852
diff changeset
186 else:
f070a4fc033c core: Continue PieCrust3 refactor, simplify pages.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
187 globs.append(pat)
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parents: 852
diff changeset
188 return globs, regexes