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annotate piecrust/sources/base.py @ 111:208c652551a3

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Quick fix for making the server correctly update referenced pages. Disable the file-system cache for rendered segments when in server mode. We can bring this optimization back when we're actually using the baking record in the server too in order to know dependencies.
author Ludovic Chabant <ludovic@chabant.com>
date Thu, 16 Oct 2014 17:03:42 -0700
parents b3ce11b2cf36
children 371a6c879ab9
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1 import re
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2 import os
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3 import os.path
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4 import logging
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5 from werkzeug.utils import cached_property
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6 from piecrust.configuration import ConfigurationError
6
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7 from piecrust.data.base import IPaginationSource, PaginationData
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8 from piecrust.data.filters import PaginationFilter
3
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9 from piecrust.page import Page
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10
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11
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12 REALM_USER = 0
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13 REALM_THEME = 1
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14 REALM_NAMES = {
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15 REALM_USER: 'User',
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16 REALM_THEME: 'Theme'}
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17
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18
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19 MODE_PARSING = 0
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20 MODE_CREATING = 1
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21
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22
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23 logger = logging.getLogger(__name__)
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24
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25
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26 page_ref_pattern = re.compile(r'(?P<src>[\w]+)\:(?P<path>.*?)(;|$)')
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27
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28
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29 class PageNotFoundError(Exception):
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30 pass
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32
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33 class InvalidFileSystemEndpointError(Exception):
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34 def __init__(self, source_name, fs_endpoint):
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35 super(InvalidFileSystemEndpointError, self).__init__(
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36 "Invalid file-system endpoint for source '%s': %s" %
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37 (source_name, fs_endpoint))
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38
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39
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40 class PageFactory(object):
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41 """ A class responsible for creating a page.
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42 """
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43 def __init__(self, source, rel_path, metadata):
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44 self.source = source
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45 self.rel_path = rel_path
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46 self.metadata = metadata
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47
50
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48 @cached_property
3
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49 def ref_spec(self):
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50 return '%s:%s' % (self.source.name, self.rel_path)
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51
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52 @cached_property
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53 def path(self):
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54 return self.source.resolveRef(self.rel_path)
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55
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56 def buildPage(self):
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57 repo = self.source.app.env.page_repository
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58 if repo is not None:
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59 cache_key = '%s:%s' % (self.source.name, self.rel_path)
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60 return repo.get(cache_key, self._doBuildPage)
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61 return self._doBuildPage()
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62
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63 def _doBuildPage(self):
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64 logger.debug("Building page: %s" % self.path)
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65 page = Page(self.source, self.metadata, self.rel_path)
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66 # Load it right away, especially when using the page repository,
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67 # because we'll be inside a critical scope.
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68 page._load()
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69 return page
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70
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71
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72 class CachedPageFactory(object):
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73 """ A `PageFactory` (in appearance) that already has a page built.
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74 """
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75 def __init__(self, page):
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76 self._page = page
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77
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78 @property
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79 def rel_path(self):
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80 return self._page.rel_path
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81
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82 @property
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83 def metadata(self):
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84 return self._page.source_metadata
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85
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86 @property
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87 def ref_spec(self):
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88 return self._page.ref_spec
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89
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90 @property
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91 def path(self):
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92 return self._page.path
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93
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94 def buildPage(self):
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95 return self._page
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96
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97
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98 class PageRef(object):
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99 """ A reference to a page, with support for looking a page in different
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100 realms.
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101 """
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102 def __init__(self, app, page_ref):
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103 self.app = app
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104 self._page_ref = page_ref
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105 self._paths = None
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106 self._first_valid_path_index = -2
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107 self._exts = list(app.config.get('site/auto_formats').keys())
3
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108
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109 @property
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110 def exists(self):
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111 try:
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112 self._checkPaths()
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113 return True
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114 except PageNotFoundError:
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115 return False
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116
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117 @property
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118 def source_name(self):
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119 self._checkPaths()
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120 return self._paths[self._first_valid_path_index][0]
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121
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122 @property
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123 def source(self):
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124 return self.app.getSource(self.source_name)
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125
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126 @property
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127 def rel_path(self):
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128 self._checkPaths()
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129 return self._paths[self._first_valid_path_index][1]
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130
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131 @property
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132 def path(self):
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133 self._checkPaths()
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134 return self._paths[self._first_valid_path_index][2]
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135
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136 @property
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137 def possible_rel_paths(self):
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138 self._load()
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139 return [p[1] for p in self._paths]
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140
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141 @property
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142 def possible_paths(self):
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143 self._load()
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144 return [p[2] for p in self._paths]
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145
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146 def _load(self):
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147 if self._paths is not None:
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148 return
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149
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150 it = list(page_ref_pattern.finditer(self._page_ref))
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151 if len(it) == 0:
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152 raise Exception("Invalid page ref: %s" % self._page_ref)
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153
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154 self._paths = []
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155 for m in it:
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156 source_name = m.group('src')
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157 source = self.app.getSource(source_name)
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158 if source is None:
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159 raise Exception("No such source: %s" % source_name)
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160 rel_path = m.group('path')
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161 path = source.resolveRef(rel_path)
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162 if '%ext%' in rel_path:
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163 for e in self._exts:
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164 self._paths.append((source_name,
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165 rel_path.replace('%ext%', e),
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166 path.replace('%ext%', e)))
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167 else:
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168 self._paths.append((source_name, rel_path, path))
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169
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170 def _checkPaths(self):
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171 if self._first_valid_path_index >= 0:
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172 return
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173 if self._first_valid_path_index == -1:
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174 raise PageNotFoundError("No valid paths were found for page reference:" %
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175 self._page_ref)
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176
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177 self._load()
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178 for i, path_info in enumerate(self._paths):
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179 if os.path.isfile(path_info[2]):
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180 self._first_valid_path_index = i
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181 break
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182
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183
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184 class PageSource(object):
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185 """ A source for pages, e.g. a directory with one file per page.
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186 """
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187 def __init__(self, app, name, config):
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188 self.app = app
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189 self.name = name
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190 self.config = config
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191 self._factories = None
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192 self._provider_type = None
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193
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194 def __getattr__(self, name):
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195 try:
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196 return self.config[name]
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197 except KeyError:
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198 raise AttributeError()
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199
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200 @property
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201 def is_theme_source(self):
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202 return self.realm == REALM_THEME
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203
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204 @property
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205 def root_dir(self):
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206 if self.is_theme_source:
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207 return self.app.theme_dir
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208 return self.app.root_dir
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209
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210 def getPageFactories(self):
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211 if self._factories is None:
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212 self._factories = list(self.buildPageFactories())
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213 return self._factories
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214
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215 def buildPageFactories(self):
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216 raise NotImplementedError()
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217
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218 def resolveRef(self, ref_path):
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219 raise NotImplementedError()
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220
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221 def findPagePath(self, metadata, mode):
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222 raise NotImplementedError()
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223
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224 def buildDataProvider(self, page, user_data):
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225 if self._provider_type is None:
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226 cls = next((pt for pt in self.app.plugin_loader.getDataProviders()
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227 if pt.PROVIDER_NAME == self.data_type),
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228 None)
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229 if cls is None:
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230 raise ConfigurationError("Unknown data provider type: %s" %
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231 self.data_type)
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232 self._provider_type = cls
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233
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234 return self._provider_type(self, page, user_data)
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235
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236 def getTaxonomyPageRef(self, tax_name):
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237 tax_pages = self.config.get('taxonomy_pages')
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238 if tax_pages is None:
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239 return None
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240 return tax_pages.get(tax_name)
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241
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242
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243 class IPreparingSource:
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244 def setupPrepareParser(self, parser, app):
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245 raise NotImplementedError()
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246
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247 def buildMetadata(self, args):
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248 raise NotImplementedError()
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249
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250
6
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251 class SimplePaginationSourceMixin(IPaginationSource):
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252 def getItemsPerPage(self):
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253 return self.config['items_per_page']
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254
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255 def getSourceIterator(self):
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256 return SourceFactoryIterator(self)
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257
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258 def getSorterIterator(self, it):
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259 return DateSortIterator(it)
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260
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261 def getTailIterator(self, it):
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262 return PaginationDataBuilderIterator(it)
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263
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264 def getPaginationFilter(self, page):
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265 conf = (page.config.get('items_filters') or
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266 page.app.config.get('site/items_filters'))
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267 if conf == 'none' or conf == 'nil' or conf == '':
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268 conf = None
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269 if conf is not None:
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270 f = PaginationFilter()
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271 f.addClausesFromConfig(conf)
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272 return f
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273 return None
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274
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275
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343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
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276 class ArraySource(PageSource, SimplePaginationSourceMixin):
3
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277 def __init__(self, app, inner_source, name='array', config=None):
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278 super(ArraySource, self).__init__(app, name, config or {})
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279 self.inner_source = inner_source
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280
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281 @property
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282 def page_count(self):
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283 return len(self.inner_source)
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284
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285 def getPageFactories(self):
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286 for p in self.inner_source:
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287 yield CachedPageFactory(p)
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288
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289
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290 class SimplePageSource(PageSource):
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291 def __init__(self, app, name, config):
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292 super(SimplePageSource, self).__init__(app, name, config)
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293 self.fs_endpoint = config.get('fs_endpoint', name)
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294 self.fs_endpoint_path = os.path.join(self.root_dir, self.fs_endpoint)
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295 self.supported_extensions = list(app.config.get('site/auto_formats').keys())
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296 self.default_auto_format = app.config.get('site/default_auto_format')
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297
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298 def buildPageFactories(self):
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299 logger.debug("Scanning for pages in: %s" % self.fs_endpoint_path)
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300 if not os.path.isdir(self.fs_endpoint_path):
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301 if self.ignore_missing_dir:
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302 return
3
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303 raise InvalidFileSystemEndpointError(self.name, self.fs_endpoint_path)
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304
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305 for dirpath, dirnames, filenames in os.walk(self.fs_endpoint_path):
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306 rel_dirpath = os.path.relpath(dirpath, self.fs_endpoint_path)
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307 dirnames[:] = list(filter(self._filterPageDirname, dirnames))
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308 for f in filter(self._filterPageFilename, filenames):
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309 slug, ext = os.path.splitext(os.path.join(rel_dirpath, f))
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310 slug = slug.replace('\\', '/')
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4bd840ae75cd Fix stupid bug in default source, add some unit tests.
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311 if ext.lstrip('.') not in self.supported_extensions:
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312 slug += ext
3
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313 if slug.startswith('./') or slug.startswith('.\\'):
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314 slug = slug[2:]
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315 if slug == '_index':
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316 slug = ''
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317 metadata = {'path': slug}
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318 fac_path = f
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319 if rel_dirpath != '.':
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320 fac_path = os.path.join(rel_dirpath, f)
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321 fac_path = fac_path.replace('\\', '/')
3
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322 yield PageFactory(self, fac_path, metadata)
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323
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324 def resolveRef(self, ref_path):
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325 return os.path.normpath(
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326 os.path.join(self.fs_endpoint_path, ref_path))
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327
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328 def findPagePath(self, metadata, mode):
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329 uri_path = metadata['path']
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330 if uri_path == '':
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331 uri_path = '_index'
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332 path = os.path.normpath(os.path.join(self.fs_endpoint_path, uri_path))
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333 _, ext = os.path.splitext(path)
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334
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335 if mode == MODE_CREATING:
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336 if ext == '':
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337 path = '%s.%s' % (path, self.default_auto_format)
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338 rel_path = os.path.relpath(path, self.fs_endpoint_path)
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339 rel_path = rel_path.replace('\\', '/')
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340 return rel_path, metadata
3
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341
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342 if ext == '':
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343 paths_to_check = ['%s.%s' % (path, e)
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344 for e in self.supported_extensions]
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345 else:
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346 paths_to_check = [path]
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347 for path in paths_to_check:
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348 if os.path.isfile(path):
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349 rel_path = os.path.relpath(path, self.fs_endpoint_path)
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350 rel_path = rel_path.replace('\\', '/')
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351 return rel_path, metadata
3
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352
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353 return None, None
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354
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355 def _filterPageDirname(self, d):
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356 return not d.endswith('-assets')
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357
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358 def _filterPageFilename(self, f):
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359 name, ext = os.path.splitext(f)
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360 return (f[0] != '.' and # .DS_store and other crap
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361 f[-1] != '~' and # Vim temp files and what-not
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diff changeset
362 f not in ['Thumbs.db']) # Windows bullshit
3
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363
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364
6
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365 class DefaultPageSource(SimplePageSource, IPreparingSource,
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366 SimplePaginationSourceMixin):
3
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367 SOURCE_NAME = 'default'
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368
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369 def __init__(self, app, name, config):
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370 super(DefaultPageSource, self).__init__(app, name, config)
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371
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372 def setupPrepareParser(self, parser, app):
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373 parser.add_argument('uri', help='The URI for the new page.')
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374
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375 def buildMetadata(self, args):
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376 return {'path': args.uri}
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377
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diff changeset
378
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379 class SourceFactoryIterator(object):
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380 def __init__(self, source):
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381 self.source = source
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382 self.it = None # This is to permit recursive traversal of the
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383 # iterator chain. It acts as the end.
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384
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385 def __iter__(self):
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diff changeset
386 for factory in self.source.getPageFactories():
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diff changeset
387 yield factory.buildPage()
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diff changeset
388
f5ca5c5bed85 More Python 3 fixes, modularization, and new unit tests.
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diff changeset
389
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390 class DateSortIterator(object):
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391 def __init__(self, it, reverse=True):
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diff changeset
392 self.it = it
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393 self.reverse = reverse
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394
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diff changeset
395 def __iter__(self):
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diff changeset
396 return iter(sorted(self.it,
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diff changeset
397 key=lambda x: x.datetime, reverse=self.reverse))
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diff changeset
398
f5ca5c5bed85 More Python 3 fixes, modularization, and new unit tests.
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diff changeset
399
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diff changeset
400 class PaginationDataBuilderIterator(object):
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diff changeset
401 def __init__(self, it):
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diff changeset
402 self.it = it
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diff changeset
403
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diff changeset
404 def __iter__(self):
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parents: 5
diff changeset
405 for page in self.it:
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
406 if page is None:
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
407 yield None
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
408 else:
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
409 yield PaginationData(page)
6
f5ca5c5bed85 More Python 3 fixes, modularization, and new unit tests.
Ludovic Chabant <ludovic@chabant.com>
parents: 5
diff changeset
410