Mercurial > piecrust2

annotate piecrust/sources/base.py @ 114:371a6c879ab9

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When possible, try and batch-load pages so we only lock once.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 19 Oct 2014 00:33:28 -0700
parents b3ce11b2cf36
children 8d16ca75075f
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3
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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
114
371a6c879ab9 When possible, try and batch-load pages so we only lock once.
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29 def build_pages(app, factories):
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30 with app.env.page_repository.startBatchGet():
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31 for f in factories:
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32 yield f.buildPage()
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33
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34
3
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35 class PageNotFoundError(Exception):
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36 pass
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37
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38
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39 class InvalidFileSystemEndpointError(Exception):
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40 def __init__(self, source_name, fs_endpoint):
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41 super(InvalidFileSystemEndpointError, self).__init__(
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42 "Invalid file-system endpoint for source '%s': %s" %
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43 (source_name, fs_endpoint))
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44
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45
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46 class PageFactory(object):
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47 """ A class responsible for creating a page.
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48 """
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49 def __init__(self, source, rel_path, metadata):
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50 self.source = source
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51 self.rel_path = rel_path
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52 self.metadata = metadata
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53
50
2fec3ee1298f Properly override pages between realms.
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54 @cached_property
3
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55 def ref_spec(self):
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56 return '%s:%s' % (self.source.name, self.rel_path)
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57
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58 @cached_property
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59 def path(self):
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60 return self.source.resolveRef(self.rel_path)
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61
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62 def buildPage(self):
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63 repo = self.source.app.env.page_repository
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64 if repo is not None:
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65 cache_key = '%s:%s' % (self.source.name, self.rel_path)
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66 return repo.get(cache_key, self._doBuildPage)
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67 return self._doBuildPage()
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68
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69 def _doBuildPage(self):
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70 logger.debug("Building page: %s" % self.path)
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71 page = Page(self.source, self.metadata, self.rel_path)
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72 # Load it right away, especially when using the page repository,
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73 # because we'll be inside a critical scope.
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74 page._load()
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75 return page
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76
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77
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78 class CachedPageFactory(object):
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79 """ A `PageFactory` (in appearance) that already has a page built.
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80 """
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81 def __init__(self, page):
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82 self._page = page
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83
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84 @property
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85 def rel_path(self):
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86 return self._page.rel_path
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87
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88 @property
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89 def metadata(self):
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90 return self._page.source_metadata
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91
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92 @property
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93 def ref_spec(self):
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94 return self._page.ref_spec
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95
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96 @property
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97 def path(self):
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98 return self._page.path
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99
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100 def buildPage(self):
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101 return self._page
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102
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103
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104 class PageRef(object):
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105 """ A reference to a page, with support for looking a page in different
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106 realms.
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107 """
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108 def __init__(self, app, page_ref):
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109 self.app = app
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110 self._page_ref = page_ref
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111 self._paths = None
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112 self._first_valid_path_index = -2
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113 self._exts = list(app.config.get('site/auto_formats').keys())
3
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114
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115 @property
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116 def exists(self):
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117 try:
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118 self._checkPaths()
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119 return True
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120 except PageNotFoundError:
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121 return False
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122
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123 @property
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124 def source_name(self):
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125 self._checkPaths()
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126 return self._paths[self._first_valid_path_index][0]
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127
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128 @property
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129 def source(self):
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130 return self.app.getSource(self.source_name)
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131
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132 @property
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133 def rel_path(self):
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134 self._checkPaths()
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135 return self._paths[self._first_valid_path_index][1]
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136
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137 @property
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138 def path(self):
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139 self._checkPaths()
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140 return self._paths[self._first_valid_path_index][2]
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141
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142 @property
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143 def possible_rel_paths(self):
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144 self._load()
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145 return [p[1] for p in self._paths]
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146
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147 @property
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148 def possible_paths(self):
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149 self._load()
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150 return [p[2] for p in self._paths]
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151
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152 def _load(self):
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153 if self._paths is not None:
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154 return
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155
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156 it = list(page_ref_pattern.finditer(self._page_ref))
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157 if len(it) == 0:
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158 raise Exception("Invalid page ref: %s" % self._page_ref)
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159
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160 self._paths = []
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161 for m in it:
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162 source_name = m.group('src')
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163 source = self.app.getSource(source_name)
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164 if source is None:
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165 raise Exception("No such source: %s" % source_name)
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166 rel_path = m.group('path')
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167 path = source.resolveRef(rel_path)
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168 if '%ext%' in rel_path:
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169 for e in self._exts:
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170 self._paths.append((source_name,
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171 rel_path.replace('%ext%', e),
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172 path.replace('%ext%', e)))
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173 else:
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174 self._paths.append((source_name, rel_path, path))
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175
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176 def _checkPaths(self):
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177 if self._first_valid_path_index >= 0:
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178 return
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179 if self._first_valid_path_index == -1:
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180 raise PageNotFoundError("No valid paths were found for page reference:" %
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181 self._page_ref)
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182
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183 self._load()
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184 for i, path_info in enumerate(self._paths):
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185 if os.path.isfile(path_info[2]):
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186 self._first_valid_path_index = i
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187 break
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188
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189
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190 class PageSource(object):
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191 """ A source for pages, e.g. a directory with one file per page.
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192 """
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193 def __init__(self, app, name, config):
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194 self.app = app
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195 self.name = name
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196 self.config = config
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197 self._factories = None
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198 self._provider_type = None
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199
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200 def __getattr__(self, name):
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201 try:
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202 return self.config[name]
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203 except KeyError:
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204 raise AttributeError()
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205
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206 @property
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207 def is_theme_source(self):
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208 return self.realm == REALM_THEME
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209
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210 @property
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211 def root_dir(self):
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212 if self.is_theme_source:
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213 return self.app.theme_dir
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214 return self.app.root_dir
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215
114
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216 def getPages(self):
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217 return build_pages(self.app, self.getPageFactories())
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diff changeset
218
3
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219 def getPageFactories(self):
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220 if self._factories is None:
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221 self._factories = list(self.buildPageFactories())
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222 return self._factories
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223
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224 def buildPageFactories(self):
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225 raise NotImplementedError()
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226
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227 def resolveRef(self, ref_path):
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228 raise NotImplementedError()
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229
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230 def findPagePath(self, metadata, mode):
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231 raise NotImplementedError()
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232
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233 def buildDataProvider(self, page, user_data):
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234 if self._provider_type is None:
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235 cls = next((pt for pt in self.app.plugin_loader.getDataProviders()
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236 if pt.PROVIDER_NAME == self.data_type),
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237 None)
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238 if cls is None:
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239 raise ConfigurationError("Unknown data provider type: %s" %
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diff changeset
240 self.data_type)
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241 self._provider_type = cls
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242
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243 return self._provider_type(self, page, user_data)
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244
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245 def getTaxonomyPageRef(self, tax_name):
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246 tax_pages = self.config.get('taxonomy_pages')
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247 if tax_pages is None:
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248 return None
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249 return tax_pages.get(tax_name)
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250
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251
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252 class IPreparingSource:
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253 def setupPrepareParser(self, parser, app):
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254 raise NotImplementedError()
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255
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256 def buildMetadata(self, args):
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257 raise NotImplementedError()
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258
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259
6
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260 class SimplePaginationSourceMixin(IPaginationSource):
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261 def getItemsPerPage(self):
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262 return self.config['items_per_page']
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diff changeset
263
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264 def getSourceIterator(self):
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265 return SourceFactoryIterator(self)
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266
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267 def getSorterIterator(self, it):
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268 return DateSortIterator(it)
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269
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270 def getTailIterator(self, it):
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diff changeset
271 return PaginationDataBuilderIterator(it)
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diff changeset
272
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273 def getPaginationFilter(self, page):
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diff changeset
274 conf = (page.config.get('items_filters') or
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diff changeset
275 page.app.config.get('site/items_filters'))
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276 if conf == 'none' or conf == 'nil' or conf == '':
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277 conf = None
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278 if conf is not None:
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279 f = PaginationFilter()
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280 f.addClausesFromConfig(conf)
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281 return f
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282 return None
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283
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284
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343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
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285 class ArraySource(PageSource, SimplePaginationSourceMixin):
3
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286 def __init__(self, app, inner_source, name='array', config=None):
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287 super(ArraySource, self).__init__(app, name, config or {})
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288 self.inner_source = inner_source
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289
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290 @property
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291 def page_count(self):
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292 return len(self.inner_source)
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293
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294 def getPageFactories(self):
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295 for p in self.inner_source:
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296 yield CachedPageFactory(p)
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297
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298
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299 class SimplePageSource(PageSource):
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300 def __init__(self, app, name, config):
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301 super(SimplePageSource, self).__init__(app, name, config)
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302 self.fs_endpoint = config.get('fs_endpoint', name)
36
485682a6de50 New site layout support.
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303 self.fs_endpoint_path = os.path.join(self.root_dir, self.fs_endpoint)
5
474c9882decf Upgrade to Python 3.
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304 self.supported_extensions = list(app.config.get('site/auto_formats').keys())
11
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305 self.default_auto_format = app.config.get('site/default_auto_format')
3
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306
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307 def buildPageFactories(self):
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308 logger.debug("Scanning for pages in: %s" % self.fs_endpoint_path)
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309 if not os.path.isdir(self.fs_endpoint_path):
84
b3ce11b2cf36 Don't complain about missing `pages` or `posts` directories by default.
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310 if self.ignore_missing_dir:
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311 return
3
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312 raise InvalidFileSystemEndpointError(self.name, self.fs_endpoint_path)
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313
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314 for dirpath, dirnames, filenames in os.walk(self.fs_endpoint_path):
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315 rel_dirpath = os.path.relpath(dirpath, self.fs_endpoint_path)
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316 dirnames[:] = list(filter(self._filterPageDirname, dirnames))
3
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317 for f in filter(self._filterPageFilename, filenames):
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318 slug, ext = os.path.splitext(os.path.join(rel_dirpath, f))
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319 slug = slug.replace('\\', '/')
30
4bd840ae75cd Fix stupid bug in default source, add some unit tests.
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diff changeset
320 if ext.lstrip('.') not in self.supported_extensions:
27
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321 slug += ext
3
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322 if slug.startswith('./') or slug.startswith('.\\'):
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323 slug = slug[2:]
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324 if slug == '_index':
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325 slug = ''
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326 metadata = {'path': slug}
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327 fac_path = f
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328 if rel_dirpath != '.':
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329 fac_path = os.path.join(rel_dirpath, f)
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330 fac_path = fac_path.replace('\\', '/')
3
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331 yield PageFactory(self, fac_path, metadata)
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332
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333 def resolveRef(self, ref_path):
11
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334 return os.path.normpath(
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diff changeset
335 os.path.join(self.fs_endpoint_path, ref_path))
3
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336
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337 def findPagePath(self, metadata, mode):
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338 uri_path = metadata['path']
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339 if uri_path == '':
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340 uri_path = '_index'
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341 path = os.path.normpath(os.path.join(self.fs_endpoint_path, uri_path))
3
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342 _, ext = os.path.splitext(path)
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343
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344 if mode == MODE_CREATING:
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345 if ext == '':
11
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diff changeset
346 path = '%s.%s' % (path, self.default_auto_format)
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347 rel_path = os.path.relpath(path, self.fs_endpoint_path)
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diff changeset
348 rel_path = rel_path.replace('\\', '/')
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diff changeset
349 return rel_path, metadata
3
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diff changeset
350
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351 if ext == '':
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diff changeset
352 paths_to_check = ['%s.%s' % (path, e)
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diff changeset
353 for e in self.supported_extensions]
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354 else:
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355 paths_to_check = [path]
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356 for path in paths_to_check:
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357 if os.path.isfile(path):
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358 rel_path = os.path.relpath(path, self.fs_endpoint_path)
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diff changeset
359 rel_path = rel_path.replace('\\', '/')
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diff changeset
360 return rel_path, metadata
3
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361
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362 return None, None
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363
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364 def _filterPageDirname(self, d):
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365 return not d.endswith('-assets')
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366
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367 def _filterPageFilename(self, f):
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368 name, ext = os.path.splitext(f)
27
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diff changeset
369 return (f[0] != '.' and # .DS_store and other crap
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diff changeset
370 f[-1] != '~' and # Vim temp files and what-not
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diff changeset
371 f not in ['Thumbs.db']) # Windows bullshit
3
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372
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373
6
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374 class DefaultPageSource(SimplePageSource, IPreparingSource,
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diff changeset
375 SimplePaginationSourceMixin):
3
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376 SOURCE_NAME = 'default'
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377
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378 def __init__(self, app, name, config):
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379 super(DefaultPageSource, self).__init__(app, name, config)
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diff changeset
380
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381 def setupPrepareParser(self, parser, app):
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diff changeset
382 parser.add_argument('uri', help='The URI for the new page.')
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383
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384 def buildMetadata(self, args):
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diff changeset
385 return {'path': args.uri}
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diff changeset
386
6
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diff changeset
387
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diff changeset
388 class SourceFactoryIterator(object):
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diff changeset
389 def __init__(self, source):
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diff changeset
390 self.source = source
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391 self.it = None # This is to permit recursive traversal of the
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diff changeset
392 # iterator chain. It acts as the end.
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diff changeset
393
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diff changeset
394 def __iter__(self):
114
371a6c879ab9 When possible, try and batch-load pages so we only lock once.
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diff changeset
395 return self.source.getPages()
6
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diff changeset
396
f5ca5c5bed85 More Python 3 fixes, modularization, and new unit tests.
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diff changeset
397
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diff changeset
398 class DateSortIterator(object):
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diff changeset
399 def __init__(self, it, reverse=True):
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diff changeset
400 self.it = it
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diff changeset
401 self.reverse = reverse
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diff changeset
402
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diff changeset
403 def __iter__(self):
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diff changeset
404 return iter(sorted(self.it,
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diff changeset
405 key=lambda x: x.datetime, reverse=self.reverse))
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406
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parents: 5
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407
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408 class PaginationDataBuilderIterator(object):
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409 def __init__(self, it):
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410 self.it = it
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parents: 5
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411
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412 def __iter__(self):
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413 for page in self.it:
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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414 if page is None:
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415 yield None
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parents: 7
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416 else:
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417 yield PaginationData(page)
6
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parents: 5
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418