Mercurial > piecrust2

annotate piecrust/routing.py @ 111:208c652551a3

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Quick fix for making the server correctly update referenced pages. Disable the file-system cache for rendered segments when in server mode. We can bring this optimization back when we're actually using the baking record in the server too in order to know dependencies.
author Ludovic Chabant <ludovic@chabant.com>
date Thu, 16 Oct 2014 17:03:42 -0700
parents f485ba500df3
children ab6e7e0e9d44
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3
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1 import re
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2 import logging
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3
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4
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5 logger = logging.getLogger(__name__)
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6
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7
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8 route_re = re.compile(r'%((?P<qual>path):)?(?P<name>\w+)%')
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9 template_func_re = re.compile(r'^(?P<name>\w+)\((?P<first_arg>\w+)(?P<other_args>.*)\)\s*$')
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10 template_func_arg_re = re.compile(r',\s*(?P<arg>\w+)')
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11
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12
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13 class Route(object):
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14 """ Information about a route for a PieCrust application.
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15 Each route defines the "shape" of an URL and how it maps to
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16 sources and taxonomies.
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17 """
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18 def __init__(self, app, cfg):
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19 self.app = app
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20 uri = cfg['url']
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21 self.uri_root = app.config.get('site/root').rstrip('/') + '/'
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22 self.uri_pattern = uri.lstrip('/')
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23 self.uri_format = route_re.sub(self._uriFormatRepl, self.uri_pattern)
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24 p = route_re.sub(self._uriPatternRepl, self.uri_pattern)
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25 self.uri_re = re.compile(p)
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26 self.source_name = cfg['source']
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27 self.taxonomy = cfg.get('taxonomy')
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28 self.required_source_metadata = []
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29 for m in route_re.finditer(uri):
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30 self.required_source_metadata.append(m.group('name'))
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31 self.template_func = None
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32 self.template_func_name = None
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33 self.template_func_args = []
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34 self._createTemplateFunc(cfg.get('func'))
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35
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36 @property
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37 def source(self):
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38 for src in self.app.sources:
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39 if src.name == self.source_name:
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40 return src
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41 raise Exception("Can't find source '%s' for route '%'." % (
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42 self.source_name, self.uri))
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43
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44 @property
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45 def source_realm(self):
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46 return self.source.realm
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47
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48 def isMatch(self, source_metadata):
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49 return True
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50
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51 def getUri(self, source_metadata):
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52 #TODO: fix this hard-coded shit
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53 for key in ['year', 'month', 'day']:
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54 if key in source_metadata and isinstance(source_metadata[key], str):
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55 source_metadata[key] = int(source_metadata[key])
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56 return self.uri_root + (self.uri_format % source_metadata)
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57
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58 def _uriFormatRepl(self, m):
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59 name = m.group('name')
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60 #TODO: fix this hard-coded shit
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61 if name == 'year':
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62 return '%(year)04d'
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63 if name == 'month':
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64 return '%(month)02d'
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65 if name == 'day':
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66 return '%(day)02d'
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67 return '%(' + name + ')s'
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68
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69 def _uriPatternRepl(self, m):
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70 name = m.group('name')
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71 qualifier = m.group('qual')
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72 if qualifier == 'path':
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73 return r'(?P<%s>.*)' % name
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74 return r'(?P<%s>[^/\?]+)' % name
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75
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76 def _createTemplateFunc(self, func_def):
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77 if func_def is None:
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78 return
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79
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80 m = template_func_re.match(func_def)
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81 if m is None:
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82 raise Exception("Template function definition for route '%s' "
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83 "has invalid syntax: %s" %
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84 (self.uri_pattern, func_def))
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85
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86 self.template_func_name = m.group('name')
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87 self.template_func_args.append(m.group('first_arg'))
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88 arg_list = m.group('other_args')
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89 if arg_list:
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90 self.template_func_args += template_func_arg_re.findall(arg_list)
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91
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92 if self.taxonomy:
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93 # This will be a taxonomy route function... this means we can
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94 # have a variable number of parameters, but only one parameter
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95 # definition, which is the value.
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96 if len(self.template_func_args) != 1:
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97 raise Exception("Route '%s' is a taxonomy route and must have "
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98 "only one argument, which is the term value." %
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99 self.uri_pattern)
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100
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101 def template_func(*args):
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102 if len(args) == 0:
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103 raise Exception(
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104 "Route function '%s' expected at least one "
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105 "argument." % func_def)
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106
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107 # Term combinations can be passed as an array, or as multiple
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108 # arguments.
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109 values = args
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110 if len(args) == 1 and isinstance(args[0], list):
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111 values = args[0]
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112
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113 # We need to register this use of a taxonomy term.
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114 if len(values) == 1:
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115 registered_values = values[0]
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116 else:
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117 registered_values = tuple(values)
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118 eis = self.app.env.exec_info_stack
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119 eis.current_page_info.render_ctx.used_taxonomy_terms.add(
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120 (self.source_name, self.taxonomy, registered_values))
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121
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122 if len(values) == 1:
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123 str_values = values[0]
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124 else:
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125 str_values = '/'.join(values)
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126 term_name = self.template_func_args[0]
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127 metadata = {term_name: str_values}
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128
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129 return self.getUri(metadata)
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130
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131 else:
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132 # Normal route function.
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133 def template_func(*args):
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134 if len(args) != len(self.template_func_args):
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135 raise Exception(
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136 "Route function '%s' expected %d arguments, "
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137 "got %d." %
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138 (func_def, len(self.template_func_args),
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139 len(args)))
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140 metadata = {}
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141 for arg_name, arg_val in zip(self.template_func_args, args):
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142 metadata[arg_name] = arg_val
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143 return self.getUri(metadata)
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144
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145 self.template_func = template_func
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146
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147
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148 class CompositeRouteFunction(object):
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149 def __init__(self):
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150 self._funcs = []
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151 self._arg_names = None
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152
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153 def addFunc(self, route):
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154 if self._arg_names is None:
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155 self._arg_names = sorted(route.template_func_args)
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156
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157 if sorted(route.template_func_args) != self._arg_names:
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158 raise Exception("Cannot merge route function with arguments '%s' "
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159 "with route function with arguments '%s'." %
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160 (route.template_func_args, self._arg_names))
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161 self._funcs.append((route, route.template_func))
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162
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163 def __call__(self, *args, **kwargs):
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164 if len(args) == len(self._arg_names):
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165 f = self._funcs[0][1]
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166 return f(*args, **kwargs)
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167
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168 if len(args) == len(self._arg_names) + 1:
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169 f_args = args[:-1]
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170 for r, f in self._funcs:
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171 if r.source_name == args[-1]:
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172 return f(f_args, **kwargs)
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173 raise Exception("No such source: %s" % args[-1])
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174
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175 raise Exception("Incorrect number of arguments for route function. "
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176 "Expected '%s', got '%s'" % (self._arg_names, args))
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177