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annotate piecrust/sources/fs.py @ 853:f070a4fc033c

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core: Continue PieCrust3 refactor, simplify pages. The asset pipeline is still the only function pipeline at this point. * No more `QualifiedPage`, and several other pieces of code deleted. * Data providers are simpler and more focused. For instance, the page iterator doesn't try to support other types of items. * Route parameters are proper known source metadata to remove the confusion between the two. * Make the baker and pipeline more correctly manage records and record histories. * Add support for record collapsing and deleting stale outputs in the asset pipeline.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 21 May 2017 00:06:59 -0700
parents 4850f8c21b6e
children 08e02c2a2a1a
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1 import os.path
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2 import re
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3 import fnmatch
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4 import logging
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5 from piecrust import osutil
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6 from piecrust.routing import RouteParameter
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7 from piecrust.sources.base import ContentItem, ContentGroup, ContentSource
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8
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9
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10 logger = logging.getLogger(__name__)
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12
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13 class InvalidFileSystemEndpointError(Exception):
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14 def __init__(self, source_name, fs_endpoint):
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15 super(InvalidFileSystemEndpointError, self).__init__(
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16 "Invalid file-system endpoint for source '%s': %s" %
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17 (source_name, fs_endpoint))
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19
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20 def _filter_crap_files(f):
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21 return (f[-1] != '~' and # Vim temp files and what-not
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22 f not in ['.DS_Store', 'Thumbs.db']) # OSX and Windows bullshit
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24
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25 class FSContentSourceBase(ContentSource):
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26 """ Implements some basic stuff for a `ContentSource` that stores its
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27 items as files on disk.
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28 """
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29 def __init__(self, app, name, config):
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30 super().__init__(app, name, config)
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31 self.fs_endpoint = config.get('fs_endpoint', name)
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32 self.fs_endpoint_path = os.path.join(self.root_dir, self.fs_endpoint)
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33
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34 def _checkFSEndpoint(self):
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35 if not os.path.isdir(self.fs_endpoint_path):
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36 if self.config.get('ignore_missing_dir'):
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37 return False
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38 raise InvalidFileSystemEndpointError(self.name,
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39 self.fs_endpoint_path)
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40 return True
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41
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42 def openItem(self, item, mode='r', encoding=None):
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43 for m in 'wxa+':
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44 if m in mode:
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45 # If opening the file for writing, let's make sure the
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46 # directory exists.
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47 dirname = os.path.dirname(item.spec)
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48 if not os.path.exists(dirname):
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49 os.makedirs(dirname, 0o755)
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50 break
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51 return open(item.spec, mode, encoding=encoding)
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52
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53 def getItemMtime(self, item):
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54 return os.path.getmtime(item.spec)
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55
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56 def describe(self):
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57 return {'endpoint_path': self.fs_endpoint_path}
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58
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59
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60 class FSContentSource(FSContentSourceBase):
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61 """ Implements a `ContentSource` that simply returns files on disk
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62 under a given root directory.
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63 """
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64 SOURCE_NAME = 'fs'
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65
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66 def __init__(self, app, name, config):
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67 super().__init__(app, name, config)
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68
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69 config.setdefault('data_type', 'asset_iterator')
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70
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71 ig, ir = _parse_ignores(config.get('ignore'))
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72 self._ignore_globs = ig
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73 self._ignore_regexes = ir
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74
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75 def getContents(self, group):
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76 logger.debug("Scanning for content in: %s" % self.fs_endpoint_path)
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77 if not self._checkFSEndpoint():
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78 return None
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79
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80 parent_path = self.fs_endpoint_path
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81 if group is not None:
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82 parent_path = group.spec
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83
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84 names = filter(_filter_crap_files, osutil.listdir(parent_path))
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85
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86 final_names = []
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87 for name in names:
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88 path = os.path.join(parent_path, name)
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89 if not self._filterIgnored(path):
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90 final_names.append(name)
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91
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92 items = []
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93 groups = []
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94 for name in final_names:
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95 path = os.path.join(parent_path, name)
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96 if os.path.isdir(path):
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97 metadata = self._createGroupMetadata(path)
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98 groups.append(ContentGroup(path, metadata))
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99 else:
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100 metadata = self._createItemMetadata(path)
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101 items.append(ContentItem(path, metadata))
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102 self._finalizeContent(group, items, groups)
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103 return items + groups
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104
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105 def _filterIgnored(self, path):
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106 rel_path = os.path.relpath(path, self.fs_endpoint_path)
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107 for g in self._ignore_globs:
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108 if fnmatch.fnmatch(rel_path, g):
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109 return True
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110 for r in self._ignore_regexes:
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111 if r.search(g):
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112 return True
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113 return False
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114
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115 def _createGroupMetadata(self, path):
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116 return {}
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117
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118 def _createItemMetadata(self, path):
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119 return {}
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120
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121 def _finalizeContent(self, parent_group, items, groups):
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122 pass
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123
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124 def getRelatedContents(self, item, relationship):
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125 return None
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126
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127 def findContent(self, route_params):
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128 rel_path = route_params['path']
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129 path = os.path.join(self.fs_endpoint_path, rel_path)
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130 metadata = self._createItemMetadata(path)
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131 return ContentItem(path, metadata)
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132
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133 def getSupportedRouteParameters(self):
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134 return [
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135 RouteParameter('path', RouteParameter.TYPE_PATH)]
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136
853
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137
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138 def _parse_ignores(patterns):
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139 globs = []
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140 regexes = []
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141 if patterns:
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142 for pat in patterns:
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143 if len(pat) > 2 and pat[0] == '/' and pat[-1] == '/':
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144 regexes.append(re.compile(pat[1:-1]))
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145 else:
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146 globs.append(pat)
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147 return globs, regexes