annotate piecrust/sources/posts.py @ 516:73bd408caebc

internal: Return `None` instead of raising an exception when finding pages. This makes the `posts` source behave like the other ones.
author Ludovic Chabant <ludovic@chabant.com>
date Mon, 27 Jul 2015 00:47:55 -0700
parents dd25bd3ce1f9
children bab91fcef741
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1 import os
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2 import os.path
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3 import re
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4 import glob
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5 import logging
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6 import datetime
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7 from piecrust.sources.base import (
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8 PageSource, InvalidFileSystemEndpointError, PageFactory,
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9 MODE_CREATING, MODE_PARSING)
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10 from piecrust.sources.interfaces import IPreparingSource
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11 from piecrust.sources.mixins import SimplePaginationSourceMixin
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12
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14 logger = logging.getLogger(__name__)
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16
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17 class PostsSource(PageSource, IPreparingSource, SimplePaginationSourceMixin):
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18 PATH_FORMAT = None
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19
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20 def __init__(self, app, name, config):
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21 super(PostsSource, self).__init__(app, name, config)
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22 self.fs_endpoint = config.get('fs_endpoint', name)
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23 self.fs_endpoint_path = os.path.join(self.root_dir, self.fs_endpoint)
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24 self.supported_extensions = list(app.config.get('site/auto_formats').keys())
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25 self.default_auto_format = app.config.get('site/default_auto_format')
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27 @property
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28 def path_format(self):
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29 return self.__class__.PATH_FORMAT
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30
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31 def resolveRef(self, ref_path):
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32 path = os.path.normpath(os.path.join(self.fs_endpoint_path, ref_path))
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33 metadata = self._parseMetadataFromPath(ref_path)
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34 return path, metadata
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35
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36 def findPageFactory(self, metadata, mode):
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37 year = metadata.get('year')
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38 month = metadata.get('month')
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39 day = metadata.get('day')
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40 slug = metadata.get('slug')
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41
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42 try:
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43 if year is not None:
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44 year = int(year)
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45 if month is not None:
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46 month = int(month)
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47 if day is not None:
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48 day = int(day)
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49 except ValueError:
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50 return None
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a46354306738 Use properly formatted date components for the blog sources.
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51
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52 ext = metadata.get('ext')
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53 if ext is None:
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54 if len(self.supported_extensions) == 1:
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55 ext = self.supported_extensions[0]
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56 elif mode == MODE_CREATING and self.default_auto_format:
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57 ext = self.default_auto_format
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58
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59 replacements = {
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60 'year': '%04d' % year if year is not None else None,
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61 'month': '%02d' % month if month is not None else None,
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62 'day': '%02d' % day if day is not None else None,
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63 'slug': slug,
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64 'ext': ext
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65 }
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66 needs_recapture = False
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67 if year is None:
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68 needs_recapture = True
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69 replacements['year'] = '????'
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70 if month is None:
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71 needs_recapture = True
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72 replacements['month'] = '??'
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73 if day is None:
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74 needs_recapture = True
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75 replacements['day'] = '??'
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76 if slug is None:
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77 needs_recapture = True
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78 replacements['slug'] = '*'
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79 if ext is None:
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80 needs_recapture = True
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81 replacements['ext'] = '*'
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82 path = os.path.normpath(os.path.join(
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83 self.fs_endpoint_path, self.path_format % replacements))
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84
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85 if needs_recapture:
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86 if mode == MODE_CREATING:
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87 raise ValueError("Not enough information to find a post path.")
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88 possible_paths = glob.glob(path)
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89 if len(possible_paths) != 1:
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90 return None
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91 path = possible_paths[0]
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92 elif mode == MODE_PARSING and not os.path.isfile(path):
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93 return None
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94
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95 rel_path = os.path.relpath(path, self.fs_endpoint_path)
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96 rel_path = rel_path.replace('\\', '/')
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97 fac_metadata = self._parseMetadataFromPath(rel_path)
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98 return PageFactory(self, rel_path, fac_metadata)
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99
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100 def setupPrepareParser(self, parser, app):
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101 parser.add_argument('-d', '--date', help="The date of the post, "
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102 "in `year/month/day` format (defaults to today).")
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103 parser.add_argument('slug', help="The URL slug for the new post.")
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104
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105 def buildMetadata(self, args):
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106 dt = datetime.date.today()
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107 if args.date:
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108 if args.date == 'today':
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109 pass # Keep the default we had.
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110 elif args.date == 'tomorrow':
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111 dt += datetime.timedelta(days=1)
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112 elif args.date.startswith('+'):
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113 try:
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114 dt += datetime.timedelta(days=int(args.date.lstrip('+')))
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115 except ValueError:
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116 raise Exception("Date offsets must be numbers.")
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117 else:
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118 try:
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119 year, month, day = [int(s) for s in args.date.split('/')]
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120 except ValueError:
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121 raise Exception("Dates must be of the form: YEAR/MONTH/DAY.")
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122 dt = datetime.date(year, month, day)
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123
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124 year, month, day = dt.year, dt.month, dt.day
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125 return {'year': year, 'month': month, 'day': day, 'slug': args.slug}
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126
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127 def _checkFsEndpointPath(self):
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128 if not os.path.isdir(self.fs_endpoint_path):
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129 if self.ignore_missing_dir:
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130 return False
3
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131 raise InvalidFileSystemEndpointError(self.name, self.fs_endpoint_path)
84
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132 return True
3
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133
363
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134 def _parseMetadataFromPath(self, path):
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135 regex_repl = {
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136 'year': '(?P<year>\d{4})',
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137 'month': '(?P<month>\d{2})',
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138 'day': '(?P<day>\d{2})',
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139 'slug': '(?P<slug>.*)',
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140 'ext': '(?P<ext>.*)'
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diff changeset
141 }
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142 path_format_re = re.sub(r'([\-\.])', r'\\\1', self.path_format)
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143 pattern = path_format_re % regex_repl + '$'
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144 m = re.search(pattern, path.replace('\\', '/'))
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diff changeset
145 if not m:
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diff changeset
146 raise Exception("Expected to be able to match path with path "
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147 "format: %s" % path)
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diff changeset
148
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149 year = int(m.group('year'))
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150 month = int(m.group('month'))
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151 day = int(m.group('day'))
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152 timestamp = datetime.date(year, month, day)
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153 metadata = {
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154 'year': year,
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155 'month': month,
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156 'day': day,
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157 'slug': m.group('slug'),
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158 'date': timestamp
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159 }
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160 return metadata
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161
3
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162 def _makeFactory(self, path, slug, year, month, day):
11
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163 path = path.replace('\\', '/')
3
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164 timestamp = datetime.date(year, month, day)
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165 metadata = {
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166 'slug': slug,
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167 'year': year,
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168 'month': month,
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169 'day': day,
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170 'date': timestamp}
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171 return PageFactory(self, path, metadata)
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172
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173
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174 class FlatPostsSource(PostsSource):
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175 SOURCE_NAME = 'posts/flat'
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176 PATH_FORMAT = '%(year)s-%(month)s-%(day)s_%(slug)s.%(ext)s'
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177
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178 def __init__(self, app, name, config):
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179 super(FlatPostsSource, self).__init__(app, name, config)
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180
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181 def buildPageFactories(self):
84
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diff changeset
182 if not self._checkFsEndpointPath():
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183 return
3
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184 logger.debug("Scanning for posts (flat) in: %s" % self.fs_endpoint_path)
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185 pattern = re.compile(r'(\d{4})-(\d{2})-(\d{2})_(.*)\.(\w+)$')
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186 _, __, filenames = next(os.walk(self.fs_endpoint_path))
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187 for f in filenames:
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188 match = pattern.match(f)
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189 if match is None:
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190 name, ext = os.path.splitext(f)
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191 logger.warning("'%s' is not formatted as 'YYYY-MM-DD_slug-title.%s' "
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192 "and will be ignored. Is that a typo?" % (f, ext))
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193 continue
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194 yield self._makeFactory(
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195 f,
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196 match.group(4),
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197 int(match.group(1)),
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198 int(match.group(2)),
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199 int(match.group(3)))
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200
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201
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202 class ShallowPostsSource(PostsSource):
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203 SOURCE_NAME = 'posts/shallow'
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204 PATH_FORMAT = '%(year)s/%(month)s-%(day)s_%(slug)s.%(ext)s'
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205
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206 def __init__(self, app, name, config):
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207 super(ShallowPostsSource, self).__init__(app, name, config)
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208
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209 def buildPageFactories(self):
84
b3ce11b2cf36 Don't complain about missing `pages` or `posts` directories by default.
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diff changeset
210 if not self._checkFsEndpointPath():
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diff changeset
211 return
3
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diff changeset
212 logger.debug("Scanning for posts (shallow) in: %s" % self.fs_endpoint_path)
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diff changeset
213 year_pattern = re.compile(r'(\d{4})$')
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diff changeset
214 file_pattern = re.compile(r'(\d{2})-(\d{2})_(.*)\.(\w+)$')
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diff changeset
215 _, year_dirs, __ = next(os.walk(self.fs_endpoint_path))
5
474c9882decf Upgrade to Python 3.
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diff changeset
216 year_dirs = [d for d in year_dirs if year_pattern.match(d)]
3
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diff changeset
217 for yd in year_dirs:
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diff changeset
218 if year_pattern.match(yd) is None:
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diff changeset
219 logger.warning("'%s' is not formatted as 'YYYY' and will be ignored. "
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
220 "Is that a typo?")
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diff changeset
221 continue
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diff changeset
222 year = int(yd)
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223 year_dir = os.path.join(self.fs_endpoint_path, yd)
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diff changeset
224
95
cb6eadea0845 Fixed a bug with the `shallow` source. Add unit tests.
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diff changeset
225 _, __, filenames = next(os.walk(year_dir))
3
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diff changeset
226 for f in filenames:
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diff changeset
227 match = file_pattern.match(f)
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diff changeset
228 if match is None:
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diff changeset
229 name, ext = os.path.splitext(f)
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diff changeset
230 logger.warning("'%s' is not formatted as 'MM-DD_slug-title.%s' "
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diff changeset
231 "and will be ignored. Is that a typo?" % (f, ext))
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diff changeset
232 continue
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233 yield self._makeFactory(
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234 os.path.join(yd, f),
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diff changeset
235 match.group(3),
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diff changeset
236 year,
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diff changeset
237 int(match.group(1)),
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diff changeset
238 int(match.group(2)))
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parents:
diff changeset
239
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240
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241 class HierarchyPostsSource(PostsSource):
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242 SOURCE_NAME = 'posts/hierarchy'
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diff changeset
243 PATH_FORMAT = '%(year)s/%(month)s/%(day)s_%(slug)s.%(ext)s'
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244
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245 def __init__(self, app, name, config):
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246 super(HierarchyPostsSource, self).__init__(app, name, config)
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diff changeset
247
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248 def buildPageFactories(self):
84
b3ce11b2cf36 Don't complain about missing `pages` or `posts` directories by default.
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parents: 80
diff changeset
249 if not self._checkFsEndpointPath():
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diff changeset
250 return
3
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diff changeset
251 logger.debug("Scanning for posts (hierarchy) in: %s" % self.fs_endpoint_path)
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diff changeset
252 year_pattern = re.compile(r'(\d{4})$')
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diff changeset
253 month_pattern = re.compile(r'(\d{2})$')
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diff changeset
254 file_pattern = re.compile(r'(\d{2})_(.*)\.(\w+)$')
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diff changeset
255 _, year_dirs, __ = next(os.walk(self.fs_endpoint_path))
5
474c9882decf Upgrade to Python 3.
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parents: 3
diff changeset
256 year_dirs = [d for d in year_dirs if year_pattern.match(d)]
3
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257 for yd in year_dirs:
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258 year = int(yd)
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259 year_dir = os.path.join(self.fs_endpoint_path, yd)
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260
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261 _, month_dirs, __ = next(os.walk(year_dir))
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474c9882decf Upgrade to Python 3.
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262 month_dirs = [d for d in month_dirs if month_pattern.match(d)]
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263 for md in month_dirs:
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264 month = int(md)
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265 month_dir = os.path.join(year_dir, md)
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266
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267 _, __, filenames = next(os.walk(month_dir))
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268 for f in filenames:
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269 match = file_pattern.match(f)
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270 if match is None:
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271 name, ext = os.path.splitext(f)
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272 logger.warning("'%s' is not formatted as 'DD_slug-title.%s' "
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273 "and will be ignored. Is that a typo?" % (f, ext))
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274 continue
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275 rel_name = os.path.join(yd, md, f)
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276 yield self._makeFactory(
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277 rel_name,
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278 match.group(2),
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279 year,
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280 month,
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281 int(match.group(1)))
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282