Mercurial > piecrust2

annotate piecrust/routing.py @ 584:9ccc933ac2c7

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internal: Refactor the app configuration class. * Moved to its own module. * More extensible validation. * Allow easier setup of defaults so `showconfig` shows more useful stuff.
author Ludovic Chabant <ludovic@chabant.com>
date Fri, 01 Jan 2016 23:18:26 -0800
parents 6b6c5442c790
children 2f780b191541
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1 import re
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2 import os.path
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3 import copy
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4 import logging
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5 import urllib.parse
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6 import unidecode
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9 logger = logging.getLogger(__name__)
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12 route_re = re.compile(r'%((?P<qual>path):)?(?P<name>\w+)%')
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13 route_esc_re = re.compile(r'\\%((?P<qual>path)\\:)?(?P<name>\w+)\\%')
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14 template_func_re = re.compile(r'^(?P<name>\w+)\((?P<first_arg>\w+)'
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15 r'(?P<other_args>.*)\)\s*$')
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16 template_func_arg_re = re.compile(r',\s*(?P<arg>\w+)')
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17 ugly_url_cleaner = re.compile(r'\.html$')
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20 class RouteNotFoundError(Exception):
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21 pass
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23
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24 def create_route_metadata(page):
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25 route_metadata = copy.deepcopy(page.source_metadata)
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26 route_metadata.update(page.getRouteMetadata())
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28 # TODO: fix this hard-coded shit
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29 for key in ['year', 'month', 'day']:
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30 if key in route_metadata and isinstance(route_metadata[key], str):
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31 route_metadata[key] = int(route_metadata[key])
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33 return route_metadata
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35
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36 class IRouteMetadataProvider(object):
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37 def getRouteMetadata(self):
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38 raise NotImplementedError()
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39
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40
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41 SLUGIFY_ENCODE = 1
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42 SLUGIFY_TRANSLITERATE = 2
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43 SLUGIFY_LOWERCASE = 4
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44 SLUGIFY_DOT_TO_DASH = 8
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45 SLUGIFY_SPACE_TO_DASH = 16
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48 re_first_dot_to_dash = re.compile(r'^\.+')
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49 re_dot_to_dash = re.compile(r'\.+')
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50 re_space_to_dash = re.compile(r'\s+')
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53 def _parse_slugify_mode(value):
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54 mapping = {
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55 'encode': SLUGIFY_ENCODE,
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56 'transliterate': SLUGIFY_TRANSLITERATE,
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57 'lowercase': SLUGIFY_LOWERCASE,
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58 'dot_to_dash': SLUGIFY_DOT_TO_DASH,
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59 'space_to_dash': SLUGIFY_SPACE_TO_DASH}
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60 mode = 0
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61 for v in value.split(','):
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62 f = mapping.get(v.strip())
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63 if f is None:
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64 if v == 'iconv':
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65 raise Exception("'iconv' is not supported as a slugify mode "
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66 "in PieCrust2. Use 'transliterate'.")
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67 raise Exception("Unknown slugify flag: %s" % v)
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68 mode |= f
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69 return mode
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71
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72 class Route(object):
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73 """ Information about a route for a PieCrust application.
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74 Each route defines the "shape" of an URL and how it maps to
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75 sources and taxonomies.
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76 """
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77 def __init__(self, app, cfg):
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78 self.app = app
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79
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80 self.source_name = cfg['source']
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81 self.taxonomy_name = cfg.get('taxonomy')
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82 self.taxonomy_term_sep = cfg.get('term_separator', '/')
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83
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84 sm = cfg.get('slugify_mode')
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85 if not sm:
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86 sm = app.config.get('site/slugify_mode', 'encode')
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87 self.slugify_mode = _parse_slugify_mode(sm)
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88
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89 self.pretty_urls = app.config.get('site/pretty_urls')
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90 self.trailing_slash = app.config.get('site/trailing_slash')
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91 self.show_debug_info = app.config.get('site/show_debug_info')
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92 self.pagination_suffix_format = app.config.get(
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93 '__cache/pagination_suffix_format')
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94 self.uri_root = app.config.get('site/root')
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95
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96 uri = cfg['url']
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97 self.uri_pattern = uri.lstrip('/')
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98 self.uri_format = route_re.sub(self._uriFormatRepl, self.uri_pattern)
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99
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100 # Get the straight-forward regex for matching this URI pattern.
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101 p = route_esc_re.sub(self._uriPatternRepl,
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102 re.escape(self.uri_pattern)) + '$'
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103 self.uri_re = re.compile(p)
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104
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105 # If the URI pattern has a 'path'-type component, we'll need to match
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106 # the versions for which that component is empty. So for instance if
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107 # we have `/foo/%path:bar%`, we may need to match `/foo` (note the
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108 # lack of a trailing slash). We have to build a special pattern (in
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109 # this case without that trailing slash) to match those situations.
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110 # (maybe there's a better way to do it but I can't think of any
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111 # right now)
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112 uri_pattern_no_path = (
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113 route_re.sub(self._uriNoPathRepl, self.uri_pattern)
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114 .replace('//', '/')
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115 .rstrip('/'))
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116 if uri_pattern_no_path != self.uri_pattern:
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117 p = route_esc_re.sub(self._uriPatternRepl,
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118 re.escape(uri_pattern_no_path)) + '$'
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119 self.uri_re_no_path = re.compile(p)
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120 else:
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121 self.uri_re_no_path = None
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122
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123 self.required_route_metadata = set()
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124 for m in route_re.finditer(self.uri_pattern):
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125 self.required_route_metadata.add(m.group('name'))
329
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diff changeset
126
3
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127 self.template_func = None
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128 self.template_func_name = None
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129 self.template_func_args = []
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130 self._createTemplateFunc(cfg.get('func'))
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131
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132 @property
483
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diff changeset
133 def is_taxonomy_route(self):
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134 return self.taxonomy_name is not None
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diff changeset
135
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diff changeset
136 @property
3
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137 def source(self):
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138 for src in self.app.sources:
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diff changeset
139 if src.name == self.source_name:
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diff changeset
140 return src
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141 raise Exception("Can't find source '%s' for route '%'." % (
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diff changeset
142 self.source_name, self.uri))
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143
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144 @property
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145 def source_realm(self):
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146 return self.source.realm
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147
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148 def matchesMetadata(self, route_metadata):
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149 return self.required_route_metadata.issubset(route_metadata.keys())
173
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diff changeset
150
380
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151 def matchUri(self, uri, strict=False):
329
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152 if not uri.startswith(self.uri_root):
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153 raise Exception("The given URI is not absolute: %s" % uri)
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154 uri = uri[len(self.uri_root):]
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155
256
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diff changeset
156 if not self.pretty_urls:
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157 uri = ugly_url_cleaner.sub('', uri)
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diff changeset
158 elif self.trailing_slash:
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diff changeset
159 uri = uri.rstrip('/')
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160
380
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diff changeset
161 route_metadata = None
173
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diff changeset
162 m = self.uri_re.match(uri)
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diff changeset
163 if m:
380
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diff changeset
164 route_metadata = m.groupdict()
173
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diff changeset
165 if self.uri_re_no_path:
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diff changeset
166 m = self.uri_re_no_path.match(uri)
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diff changeset
167 if m:
380
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diff changeset
168 route_metadata = m.groupdict()
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diff changeset
169 if route_metadata is None:
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diff changeset
170 return None
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171
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diff changeset
172 if not strict:
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diff changeset
173 # When matching URIs, if the URI is a match but is missing some
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diff changeset
174 # metadata, fill those up with empty strings. This can happen if,
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diff changeset
175 # say, a route's pattern is `/foo/%slug%`, and we're matching an
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diff changeset
176 # URL like `/foo`.
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diff changeset
177 matched_keys = set(route_metadata.keys())
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diff changeset
178 missing_keys = self.required_route_metadata - matched_keys
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diff changeset
179 for k in missing_keys:
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diff changeset
180 route_metadata[k] = ''
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diff changeset
181
448
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diff changeset
182 # TODO: fix this hard-coded shit
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diff changeset
183 for key in ['year', 'month', 'day']:
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parents: 438
diff changeset
184 if key in route_metadata and isinstance(route_metadata[key], str):
482
cce911be024d serve: Fix a crash when matching taxonomy URLs with incorrect URLs.
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parents: 448
diff changeset
185 try:
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diff changeset
186 route_metadata[key] = int(route_metadata[key])
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parents: 448
diff changeset
187 except ValueError:
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diff changeset
188 pass
448
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diff changeset
189
380
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diff changeset
190 return route_metadata
3
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191
430
21e26ed867b6 internal: Create full route metadata in one place.
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diff changeset
192 def getUri(self, route_metadata, *, sub_num=1):
369
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diff changeset
193 uri = self.uri_format % route_metadata
256
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diff changeset
194 suffix = None
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diff changeset
195 if sub_num > 1:
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diff changeset
196 # Note that we know the pagination suffix starts with a slash.
262
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diff changeset
197 suffix = self.pagination_suffix_format % {'num': sub_num}
256
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diff changeset
198
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diff changeset
199 if self.pretty_urls:
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diff changeset
200 # Output will be:
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diff changeset
201 # - `subdir/name`
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diff changeset
202 # - `subdir/name/2`
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diff changeset
203 # - `subdir/name.ext`
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diff changeset
204 # - `subdir/name.ext/2`
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parents: 235
diff changeset
205 if suffix:
262
61145dcd56e0 routing: Better generate URLs according to the site configuration.
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parents: 256
diff changeset
206 if uri == '':
61145dcd56e0 routing: Better generate URLs according to the site configuration.
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diff changeset
207 uri = suffix.lstrip('/')
61145dcd56e0 routing: Better generate URLs according to the site configuration.
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diff changeset
208 else:
61145dcd56e0 routing: Better generate URLs according to the site configuration.
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diff changeset
209 uri = uri.rstrip('/') + suffix
337
49408002798e internal: Fix stupid routing bug.
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diff changeset
210 if self.trailing_slash and uri != '':
256
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diff changeset
211 uri = uri.rstrip('/') + '/'
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diff changeset
212 else:
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diff changeset
213 # Output will be:
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diff changeset
214 # - `subdir/name.html`
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diff changeset
215 # - `subdir/name/2.html`
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diff changeset
216 # - `subdir/name.ext`
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diff changeset
217 # - `subdir/name/2.ext`
262
61145dcd56e0 routing: Better generate URLs according to the site configuration.
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parents: 256
diff changeset
218 if uri == '':
61145dcd56e0 routing: Better generate URLs according to the site configuration.
Ludovic Chabant <ludovic@chabant.com>
parents: 256
diff changeset
219 if suffix:
61145dcd56e0 routing: Better generate URLs according to the site configuration.
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diff changeset
220 uri = suffix.lstrip('/') + '.html'
256
da5e6e00fb41 bake/serve: Make previewed and baked URLs consistent.
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parents: 235
diff changeset
221 else:
262
61145dcd56e0 routing: Better generate URLs according to the site configuration.
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diff changeset
222 base_uri, ext = os.path.splitext(uri)
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parents: 256
diff changeset
223 if not ext:
61145dcd56e0 routing: Better generate URLs according to the site configuration.
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parents: 256
diff changeset
224 ext = '.html'
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parents: 256
diff changeset
225 if suffix:
61145dcd56e0 routing: Better generate URLs according to the site configuration.
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parents: 256
diff changeset
226 uri = base_uri + suffix + ext
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parents: 256
diff changeset
227 else:
61145dcd56e0 routing: Better generate URLs according to the site configuration.
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parents: 256
diff changeset
228 uri = base_uri + ext
256
da5e6e00fb41 bake/serve: Make previewed and baked URLs consistent.
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parents: 235
diff changeset
229
568
6b6c5442c790 bug: Correctly handle root URLs with special characters.
Ludovic Chabant <ludovic@chabant.com>
parents: 561
diff changeset
230 uri = self.uri_root + urllib.parse.quote(uri)
396
dc0988d937b3 serve: Fix bug where `?!debug` doesn't get appending correctly.
Ludovic Chabant <ludovic@chabant.com>
parents: 380
diff changeset
231
dc0988d937b3 serve: Fix bug where `?!debug` doesn't get appending correctly.
Ludovic Chabant <ludovic@chabant.com>
parents: 380
diff changeset
232 if self.show_debug_info:
dc0988d937b3 serve: Fix bug where `?!debug` doesn't get appending correctly.
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parents: 380
diff changeset
233 uri += '?!debug'
dc0988d937b3 serve: Fix bug where `?!debug` doesn't get appending correctly.
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parents: 380
diff changeset
234
235
55087da9a72e bake: Don't include the site root when building output paths.
Ludovic Chabant <ludovic@chabant.com>
parents: 225
diff changeset
235 return uri
3
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parents:
diff changeset
236
515
16e705c58cae internal: Improve handling of taxonomy term slugification.
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parents: 483
diff changeset
237 def getTaxonomyTerms(self, route_metadata):
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parents: 483
diff changeset
238 if not self.is_taxonomy_route:
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Ludovic Chabant <ludovic@chabant.com>
parents: 483
diff changeset
239 raise Exception("This route isn't a taxonomy route.")
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parents: 483
diff changeset
240
16e705c58cae internal: Improve handling of taxonomy term slugification.
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parents: 483
diff changeset
241 tax = self.app.getTaxonomy(self.taxonomy_name)
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parents: 483
diff changeset
242 all_values = route_metadata.get(tax.term_name)
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Ludovic Chabant <ludovic@chabant.com>
parents: 483
diff changeset
243 if all_values is None:
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Ludovic Chabant <ludovic@chabant.com>
parents: 483
diff changeset
244 raise Exception("'%s' values couldn't be found in route metadata" %
16e705c58cae internal: Improve handling of taxonomy term slugification.
Ludovic Chabant <ludovic@chabant.com>
parents: 483
diff changeset
245 tax.term_name)
16e705c58cae internal: Improve handling of taxonomy term slugification.
Ludovic Chabant <ludovic@chabant.com>
parents: 483
diff changeset
246
16e705c58cae internal: Improve handling of taxonomy term slugification.
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parents: 483
diff changeset
247 if self.taxonomy_term_sep in all_values:
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parents: 483
diff changeset
248 return tuple(all_values.split(self.taxonomy_term_sep))
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parents: 483
diff changeset
249 return all_values
16e705c58cae internal: Improve handling of taxonomy term slugification.
Ludovic Chabant <ludovic@chabant.com>
parents: 483
diff changeset
250
334
b034f6f15e22 bake: Several bug taxonomy-related fixes for incorrect incremental bakes.
Ludovic Chabant <ludovic@chabant.com>
parents: 329
diff changeset
251 def slugifyTaxonomyTerm(self, term):
b034f6f15e22 bake: Several bug taxonomy-related fixes for incorrect incremental bakes.
Ludovic Chabant <ludovic@chabant.com>
parents: 329
diff changeset
252 if isinstance(term, tuple):
520
bab91fcef741 bake/serve: Improve support for unicode, add slugification options.
Ludovic Chabant <ludovic@chabant.com>
parents: 515
diff changeset
253 return self.taxonomy_term_sep.join(
bab91fcef741 bake/serve: Improve support for unicode, add slugification options.
Ludovic Chabant <ludovic@chabant.com>
parents: 515
diff changeset
254 map(self._slugifyOne, term))
bab91fcef741 bake/serve: Improve support for unicode, add slugification options.
Ludovic Chabant <ludovic@chabant.com>
parents: 515
diff changeset
255 return self._slugifyOne(term)
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diff changeset
256
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diff changeset
257 def _slugifyOne(self, term):
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258 if self.slugify_mode & SLUGIFY_TRANSLITERATE:
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diff changeset
259 term = unidecode.unidecode(term)
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260 if self.slugify_mode & SLUGIFY_LOWERCASE:
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diff changeset
261 term = term.lower()
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diff changeset
262 if self.slugify_mode & SLUGIFY_DOT_TO_DASH:
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diff changeset
263 term = re_first_dot_to_dash.sub('', term)
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diff changeset
264 term = re_dot_to_dash.sub('-', term)
561
624559e72d3b routes: Add better support for taxonomy slugification.
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parents: 555
diff changeset
265 if self.slugify_mode & SLUGIFY_SPACE_TO_DASH:
624559e72d3b routes: Add better support for taxonomy slugification.
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diff changeset
266 term = re_space_to_dash.sub('-', term)
334
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parents: 329
diff changeset
267 return term
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diff changeset
268
3
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269 def _uriFormatRepl(self, m):
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270 name = m.group('name')
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271 #TODO: fix this hard-coded shit
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272 if name == 'year':
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273 return '%(year)04d'
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274 if name == 'month':
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275 return '%(month)02d'
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276 if name == 'day':
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277 return '%(day)02d'
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278 return '%(' + name + ')s'
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279
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280 def _uriPatternRepl(self, m):
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281 name = m.group('name')
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282 qualifier = m.group('qual')
334
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283 if qualifier == 'path' or self.taxonomy_name:
173
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284 return r'(?P<%s>[^\?]*)' % name
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285 return r'(?P<%s>[^/\?]+)' % name
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diff changeset
286
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287 def _uriNoPathRepl(self, m):
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288 name = m.group('name')
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289 qualifier = m.group('qual')
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diff changeset
290 if qualifier == 'path':
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291 return ''
3
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292 return r'(?P<%s>[^/\?]+)' % name
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293
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294 def _createTemplateFunc(self, func_def):
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295 if func_def is None:
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296 return
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297
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298 m = template_func_re.match(func_def)
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299 if m is None:
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300 raise Exception("Template function definition for route '%s' "
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301 "has invalid syntax: %s" %
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diff changeset
302 (self.uri_pattern, func_def))
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303
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304 self.template_func_name = m.group('name')
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305 self.template_func_args.append(m.group('first_arg'))
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306 arg_list = m.group('other_args')
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diff changeset
307 if arg_list:
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308 self.template_func_args += template_func_arg_re.findall(arg_list)
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diff changeset
309
334
b034f6f15e22 bake: Several bug taxonomy-related fixes for incorrect incremental bakes.
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diff changeset
310 if self.taxonomy_name:
3
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311 # This will be a taxonomy route function... this means we can
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312 # have a variable number of parameters, but only one parameter
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313 # definition, which is the value.
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314 if len(self.template_func_args) != 1:
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315 raise Exception("Route '%s' is a taxonomy route and must have "
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316 "only one argument, which is the term value." %
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diff changeset
317 self.uri_pattern)
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318
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319 def template_func(*args):
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320 if len(args) == 0:
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diff changeset
321 raise Exception(
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
322 "Route function '%s' expected at least one "
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diff changeset
323 "argument." % func_def)
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324
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325 # Term combinations can be passed as an array, or as multiple
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326 # arguments.
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327 values = args
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328 if len(args) == 1 and isinstance(args[0], list):
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diff changeset
329 values = args[0]
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330
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331 # We need to register this use of a taxonomy term.
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diff changeset
332 if len(values) == 1:
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diff changeset
333 registered_values = values[0]
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diff changeset
334 else:
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diff changeset
335 registered_values = tuple(values)
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diff changeset
336 eis = self.app.env.exec_info_stack
338
938be93215cb bake: Improve render context and bake record, fix incremental bake bugs.
Ludovic Chabant <ludovic@chabant.com>
parents: 337
diff changeset
337 cpi = eis.current_page_info.render_ctx.current_pass_info
344
bf32be298b89 internal: Template functions could potentially be called outside of a render.
Ludovic Chabant <ludovic@chabant.com>
parents: 338
diff changeset
338 if cpi:
bf32be298b89 internal: Template functions could potentially be called outside of a render.
Ludovic Chabant <ludovic@chabant.com>
parents: 338
diff changeset
339 cpi.used_taxonomy_terms.add(
bf32be298b89 internal: Template functions could potentially be called outside of a render.
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parents: 338
diff changeset
340 (self.source_name, self.taxonomy_name,
bf32be298b89 internal: Template functions could potentially be called outside of a render.
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parents: 338
diff changeset
341 registered_values))
3
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diff changeset
342
334
b034f6f15e22 bake: Several bug taxonomy-related fixes for incorrect incremental bakes.
Ludovic Chabant <ludovic@chabant.com>
parents: 329
diff changeset
343 str_values = self.slugifyTaxonomyTerm(registered_values)
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
344 term_name = self.template_func_args[0]
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345 metadata = {term_name: str_values}
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diff changeset
346
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diff changeset
347 return self.getUri(metadata)
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348
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diff changeset
349 else:
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diff changeset
350 # Normal route function.
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diff changeset
351 def template_func(*args):
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diff changeset
352 if len(args) != len(self.template_func_args):
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diff changeset
353 raise Exception(
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diff changeset
354 "Route function '%s' expected %d arguments, "
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diff changeset
355 "got %d." %
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diff changeset
356 (func_def, len(self.template_func_args),
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diff changeset
357 len(args)))
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diff changeset
358 metadata = {}
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diff changeset
359 for arg_name, arg_val in zip(self.template_func_args, args):
438
cff70eeb1cc1 bug: Fix routing bug introduced by 21e26ed867b6.
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parents: 430
diff changeset
360 #TODO: fix this hard-coded shit.
cff70eeb1cc1 bug: Fix routing bug introduced by 21e26ed867b6.
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parents: 430
diff changeset
361 if arg_name in ['year', 'month', 'day']:
cff70eeb1cc1 bug: Fix routing bug introduced by 21e26ed867b6.
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parents: 430
diff changeset
362 arg_val = int(arg_val)
3
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diff changeset
363 metadata[arg_name] = arg_val
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diff changeset
364 return self.getUri(metadata)
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diff changeset
365
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diff changeset
366 self.template_func = template_func
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diff changeset
367
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diff changeset
368
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369 class CompositeRouteFunction(object):
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diff changeset
370 def __init__(self):
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diff changeset
371 self._funcs = []
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diff changeset
372 self._arg_names = None
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373
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diff changeset
374 def addFunc(self, route):
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diff changeset
375 if self._arg_names is None:
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diff changeset
376 self._arg_names = sorted(route.template_func_args)
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parents:
diff changeset
377
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diff changeset
378 if sorted(route.template_func_args) != self._arg_names:
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diff changeset
379 raise Exception("Cannot merge route function with arguments '%s' "
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parents:
diff changeset
380 "with route function with arguments '%s'." %
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diff changeset
381 (route.template_func_args, self._arg_names))
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parents:
diff changeset
382 self._funcs.append((route, route.template_func))
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parents:
diff changeset
383
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
384 def __call__(self, *args, **kwargs):
334
b034f6f15e22 bake: Several bug taxonomy-related fixes for incorrect incremental bakes.
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parents: 329
diff changeset
385 if len(self._funcs) == 1 or len(args) == len(self._arg_names):
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
386 f = self._funcs[0][1]
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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387 return f(*args, **kwargs)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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388
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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389 if len(args) == len(self._arg_names) + 1:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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390 f_args = args[:-1]
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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391 for r, f in self._funcs:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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392 if r.source_name == args[-1]:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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393 return f(f_args, **kwargs)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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394 raise Exception("No such source: %s" % args[-1])
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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395
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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396 raise Exception("Incorrect number of arguments for route function. "
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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397 "Expected '%s', got '%s'" % (self._arg_names, args))
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
398