Mercurial > piecrust2

annotate piecrust/commands/base.py @ 380:f33712c4cfab

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routing: Fix bugs with matching URLs with correct route but missing metadata. When matching a route like `/foo/%slug%` against an URL like `/foo`, the route will (correctly) return a match, but it will be completely missing the `slug` metadata, resulting in problems elsewhere. This change makes it so that any missing route metadata will be filled in with an empty string. And because this means generated URLs may differ from the incoming URL when using trailing slashes (`/foo/` _vs._ `/foo`), we make the assert in the chef server handle those discrepancies.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 10 May 2015 00:34:21 -0700
parents c2ca72fb7f0b
children 456db44dcc53
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1 import logging
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2 import argparse
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3 import functools
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4 from piecrust.pathutil import SiteNotFoundError
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7 logger = logging.getLogger(__name__)
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10 class CommandContext(object):
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11 def __init__(self, app, parser, args):
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12 self.app = app
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13 self.parser = parser
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14 self.args = args
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16
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17 class ChefCommand(object):
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18 def __init__(self):
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19 self.name = '__unknown__'
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20 self.description = '__unknown__'
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21 self.requires_website = True
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22 self.cache_name = 'default'
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23
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24 def setupParser(self, parser, app):
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25 raise NotImplementedError()
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27 def run(self, ctx):
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28 raise NotImplementedError("Command '%s' doesn't implement the `run` "
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29 "method." % type(self))
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30
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31 def checkedRun(self, ctx):
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32 if ctx.app.root_dir is None and self.requires_website:
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33 raise SiteNotFoundError()
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34 return self.run(ctx)
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37 class ExtendableChefCommand(ChefCommand):
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38 def __init__(self):
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39 super(ExtendableChefCommand, self).__init__()
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40 self._extensions = None
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41
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42 def getExtensions(self, app):
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43 self._loadExtensions(app)
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44 return self._extensions
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45
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46 def setupExtensionParsers(self, subparsers, app):
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47 for e in self.getExtensions(app):
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48 p = subparsers.add_parser(e.name, help=e.description)
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49 e.setupParser(p, app)
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50 p.set_defaults(sub_func=e.checkedRun)
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51
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52 def _loadExtensions(self, app):
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53 if self._extensions is not None:
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54 return
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55 self._extensions = []
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56 for e in app.plugin_loader.getCommandExtensions():
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57 if e.command_name == self.name and e.supports(app):
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58 self._extensions.append(e)
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59
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60
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61 class ChefCommandExtension(object):
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62 command_name = '__unknown__'
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63
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64 def supports(self, app):
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65 return True
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66
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67
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68 class HelpCommand(ExtendableChefCommand):
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69 def __init__(self):
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70 super(HelpCommand, self).__init__()
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71 self.name = 'help'
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72 self.description = "Prints help about PieCrust's chef."
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73 self.requires_website = False
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74 self._topic_providers = []
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75
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76 @property
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77 def has_topics(self):
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78 return len(self._topic_providers) > 0
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79
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80 def getTopics(self):
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81 return [(n, d) for (n, d, e) in self._topic_providers]
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82
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83 def setupParser(self, parser, app):
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84 parser.add_argument('topic', nargs='?',
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85 help="The command name or topic on which to get help.")
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86
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87 extensions = self.getExtensions(app)
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88 for ext in extensions:
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89 for name, desc in ext.getHelpTopics():
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90 self._topic_providers.append((name, desc, ext))
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91
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92 def run(self, ctx):
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93 topic = ctx.args.topic
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94
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95 if topic is None:
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96 ctx.parser.print_help()
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97 return 0
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98
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99 for name, desc, ext in self._topic_providers:
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100 if name == topic:
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101 print(ext.getHelpTopic(topic, ctx.app))
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102 return 0
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103
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104 for c in ctx.app.plugin_loader.getCommands():
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105 if c.name == topic:
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106 fake = argparse.ArgumentParser(
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107 prog='%s %s' % (ctx.parser.prog, c.name),
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108 description=c.description)
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109 c.setupParser(fake, ctx.app)
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110 fake.print_help()
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111 return 0
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112
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113 raise Exception("No such command or topic: %s" % topic)
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115
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116 class _WrappedCommand(ChefCommand):
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117 def __init__(self, func, name, description):
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118 super(_WrappedCommand, self).__init__()
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119 self.func = func
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120 self.name = name
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121 self.description = description
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122
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123 def run(self, ctx):
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124 self.func(ctx)
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125
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126
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127 def simple_command(f, name, description=None):
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128 @functools.wraps(f)
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129 def wrapper(*args, **kwargs):
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130 return f(*args, **kwargs)
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131 cmd = _WrappedCommand(f, name, description)
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132 f.__command_class__ = cmd
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133 return wrapper
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134
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135
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents: 1
diff changeset
136 def get_func_command(f):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents: 1
diff changeset
137 return getattr(f, '__command_class__')
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents: 1
diff changeset
138