Mercurial > piecrust2
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> |
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date | Mon, 27 Jul 2015 00:47:55 -0700 |
parents | dd25bd3ce1f9 |
children | bab91fcef741 |
rev | line source |
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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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13 |
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14 logger = logging.getLogger(__name__) |
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15 |
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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) |
5 | 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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26 |
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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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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 |
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131 raise InvalidFileSystemEndpointError(self.name, self.fs_endpoint_path) |
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132 return True |
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133 |
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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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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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145 if not m: |
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146 raise Exception("Expected to be able to match path with path " |
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147 "format: %s" % path) |
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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 |
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162 def _makeFactory(self, path, slug, year, month, day): |
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163 path = path.replace('\\', '/') |
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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): |
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182 if not self._checkFsEndpointPath(): |
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183 return |
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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): |
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210 if not self._checkFsEndpointPath(): |
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211 return |
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212 logger.debug("Scanning for posts (shallow) in: %s" % self.fs_endpoint_path) |
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213 year_pattern = re.compile(r'(\d{4})$') |
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214 file_pattern = re.compile(r'(\d{2})-(\d{2})_(.*)\.(\w+)$') |
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215 _, year_dirs, __ = next(os.walk(self.fs_endpoint_path)) |
5 | 216 year_dirs = [d for d in year_dirs if year_pattern.match(d)] |
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217 for yd in year_dirs: |
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218 if year_pattern.match(yd) is None: |
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219 logger.warning("'%s' is not formatted as 'YYYY' and will be ignored. " |
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220 "Is that a typo?") |
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221 continue |
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222 year = int(yd) |
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223 year_dir = os.path.join(self.fs_endpoint_path, yd) |
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224 |
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225 _, __, filenames = next(os.walk(year_dir)) |
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226 for f in filenames: |
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227 match = file_pattern.match(f) |
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228 if match is None: |
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229 name, ext = os.path.splitext(f) |
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230 logger.warning("'%s' is not formatted as 'MM-DD_slug-title.%s' " |
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231 "and will be ignored. Is that a typo?" % (f, ext)) |
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232 continue |
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233 yield self._makeFactory( |
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234 os.path.join(yd, f), |
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235 match.group(3), |
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236 year, |
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237 int(match.group(1)), |
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238 int(match.group(2))) |
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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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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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247 |
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248 def buildPageFactories(self): |
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249 if not self._checkFsEndpointPath(): |
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250 return |
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251 logger.debug("Scanning for posts (hierarchy) in: %s" % self.fs_endpoint_path) |
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252 year_pattern = re.compile(r'(\d{4})$') |
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253 month_pattern = re.compile(r'(\d{2})$') |
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254 file_pattern = re.compile(r'(\d{2})_(.*)\.(\w+)$') |
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255 _, year_dirs, __ = next(os.walk(self.fs_endpoint_path)) |
5 | 256 year_dirs = [d for d in year_dirs if year_pattern.match(d)] |
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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)) |
5 | 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 |