Mercurial > piecrust2

annotate piecrust/main.py @ 532:c3c1171679de 2.0.0b1

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prepare: Fix the RSS template.
author Ludovic Chabant <ludovic@chabant.com>
date Wed, 29 Jul 2015 08:58:51 -0700
parents 186a29f61ddc
children 353a0b30f412
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
99
8703be118430 Changes to `help` command and extendable commands:
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diff changeset
1 import io
3
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2 import sys
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3 import time
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4 import os.path
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5 import logging
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6 import argparse
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7 import colorama
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8 from piecrust import APP_VERSION
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9 from piecrust.app import (
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10 PieCrust, PieCrustConfiguration, apply_variant_and_values)
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11 from piecrust.chefutil import (
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12 format_timed, log_friendly_exception, print_help_item)
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13 from piecrust.commands.base import CommandContext
3
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14 from piecrust.pathutil import SiteNotFoundError, find_app_root
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15 from piecrust.plugins.base import PluginLoader
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16
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17
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18 logger = logging.getLogger(__name__)
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19
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20
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21 class ColoredFormatter(logging.Formatter):
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22 COLORS = {
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23 'DEBUG': colorama.Fore.BLACK + colorama.Style.BRIGHT,
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24 'INFO': '',
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25 'WARNING': colorama.Fore.YELLOW,
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26 'ERROR': colorama.Fore.RED,
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27 'CRITICAL': colorama.Back.RED + colorama.Fore.WHITE
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28 }
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29
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30 def __init__(self, fmt=None, datefmt=None):
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31 super(ColoredFormatter, self).__init__(fmt, datefmt)
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32
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33 def format(self, record):
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34 color = self.COLORS.get(record.levelname)
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35 res = super(ColoredFormatter, self).format(record)
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36 if color:
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37 res = color + res + colorama.Style.RESET_ALL
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38 return res
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39
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40
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41 class NullPieCrust:
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42 def __init__(self):
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43 self.root_dir = None
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44 self.debug = False
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45 self.templates_dirs = []
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46 self.theme_dir = None
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47 self.cache_dir = None
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48 self.config = PieCrustConfiguration()
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49 self.plugin_loader = PluginLoader(self)
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50 self.env = None
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51
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52
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53 def main():
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54 if sys.platform == 'darwin':
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55 # There's a bug on MacOSX that can cause Python to be confused
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56 # about the locale. Let's try to fix that.
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57 # See: http://bugs.python.org/issue18378
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58 import locale
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59 try:
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60 locale.getdefaultlocale()
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61 except ValueError:
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62 locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')
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63
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64 argv = sys.argv[1:]
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65 pre_args = _pre_parse_chef_args(argv)
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66 try:
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67 exit_code = _run_chef(pre_args, argv)
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68 except Exception as ex:
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69 if pre_args.debug:
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70 logger.exception(ex)
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71 else:
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72 log_friendly_exception(logger, ex)
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73 exit_code = 1
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74 sys.exit(exit_code)
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75
3
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76
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77 class PreParsedChefArgs(object):
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78 def __init__(self, root=None, cache=True, debug=False, quiet=False,
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79 log_file=None, log_debug=False, config_variant=None):
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80 self.root = root
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81 self.cache = cache
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82 self.debug = debug
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83 self.quiet = quiet
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84 self.log_file = log_file
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85 self.log_debug = log_debug
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86 self.config_variant = config_variant
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87 self.config_values = []
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88
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89
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90 def _parse_config_value(arg):
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91 try:
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92 name, value = arg.split('=')
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93 except Exception:
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94 raise Exception("Invalid configuration name and value: %s" % arg)
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95 return (name, value)
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96
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97
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98 def _pre_parse_chef_args(argv):
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99 # We need to parse some arguments before we can build the actual argument
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100 # parser, because it can affect which plugins will be loaded. Also, log-
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101 # related arguments must be parsed first because we want to log everything
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102 # from the beginning.
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103 res = PreParsedChefArgs()
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104 i = 0
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105 while i < len(argv):
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106 arg = argv[i]
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107 if arg.startswith('--root='):
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108 res.root = os.path.expanduser(arg[len('--root='):])
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109 elif arg == '--root':
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110 res.root = os.path.expanduser(argv[i + 1])
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111 i += 1
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112 elif arg.startswith('--config='):
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113 res.config_variant = arg[len('--config='):]
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114 elif arg == '--config':
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115 res.config_variant = argv[i + 1]
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116 i += 1
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117 elif arg.startswith('--config-set='):
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118 res.config_values.append(
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119 _parse_config_value(arg[len('--config-set='):]))
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120 elif arg == '--config-set':
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121 res.config_values.append(_parse_config_value(argv[i + 1]))
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122 i += 1
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123 elif arg == '--log':
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124 res.log_file = argv[i + 1]
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125 i += 1
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126 elif arg == '--log-debug':
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127 res.log_debug = True
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128 elif arg == '--no-cache':
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129 res.cache = False
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130 elif arg == '--debug':
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131 res.debug = True
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132 elif arg == '--quiet':
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133 res.quiet = True
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134 else:
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135 break
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136
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137 i = i + 1
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138
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139 # Setup the logger.
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140 if res.debug and res.quiet:
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141 raise Exception("You can't specify both --debug and --quiet.")
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142
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143 colorama.init()
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144 root_logger = logging.getLogger()
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145 root_logger.setLevel(logging.INFO)
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146 if res.debug or res.log_debug:
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147 root_logger.setLevel(logging.DEBUG)
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148
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149 log_handler = logging.StreamHandler(sys.stdout)
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150 if res.debug:
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151 log_handler.setLevel(logging.DEBUG)
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152 log_handler.setFormatter(ColoredFormatter("[%(name)s] %(message)s"))
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153 else:
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154 if res.quiet:
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155 log_handler.setLevel(logging.WARNING)
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156 else:
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157 log_handler.setLevel(logging.INFO)
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158 log_handler.setFormatter(ColoredFormatter("%(message)s"))
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159 root_logger.addHandler(log_handler)
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160
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161 if res.log_file:
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162 file_handler = logging.FileHandler(res.log_file, mode='w')
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163 root_logger.addHandler(file_handler)
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164 if res.log_debug:
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165 file_handler.setLevel(logging.DEBUG)
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166
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167 return res
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168
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169
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170 def _run_chef(pre_args, argv):
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171 # Setup the app.
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172 start_time = time.perf_counter()
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173 root = pre_args.root
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174 if root is None:
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175 try:
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176 root = find_app_root()
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177 except SiteNotFoundError:
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178 root = None
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179
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180 if not root:
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181 app = NullPieCrust()
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182 else:
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183 app = PieCrust(root, cache=pre_args.cache, debug=pre_args.debug)
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184
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185 # Build a hash for a custom cache directory.
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186 cache_key = 'default'
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187
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188 # Handle custom configurations.
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189 if pre_args.config_variant is not None and not root:
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190 raise SiteNotFoundError("Can't apply any variant.")
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191 apply_variant_and_values(app, pre_args.config_variant,
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192 pre_args.config_values)
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193
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194 # Adjust the cache key.
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195 if pre_args.config_variant is not None:
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196 cache_key += ',variant=%s' % pre_args.config_variant
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197 for name, value in pre_args.config_values:
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198 cache_key += ',%s=%s' % (name, value)
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199
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200 # Setup the arg parser.
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201 parser = argparse.ArgumentParser(
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diff changeset
202 prog='chef',
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203 description="The PieCrust chef manages your website.",
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204 formatter_class=argparse.RawDescriptionHelpFormatter)
341
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205 parser.add_argument(
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206 '--version',
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207 action='version',
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208 version=('%(prog)s ' + APP_VERSION))
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209 parser.add_argument(
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210 '--root',
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211 help="The root directory of the website.")
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212 parser.add_argument(
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213 '--config',
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diff changeset
214 help="The configuration variant to use for this command.")
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215 parser.add_argument(
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216 '--config-set',
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217 help="Sets a specific site configuration setting.")
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218 parser.add_argument(
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219 '--debug',
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220 help="Show debug information.", action='store_true')
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221 parser.add_argument(
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222 '--no-cache',
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223 help="When applicable, disable caching.",
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224 action='store_true')
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225 parser.add_argument(
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226 '--quiet',
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227 help="Print only important information.",
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228 action='store_true')
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229 parser.add_argument(
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230 '--log',
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231 help="Send log messages to the specified file.")
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232 parser.add_argument(
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233 '--log-debug',
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234 help="Log debug messages to the log file.",
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diff changeset
235 action='store_true')
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236
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237 commands = sorted(app.plugin_loader.getCommands(),
341
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diff changeset
238 key=lambda c: c.name)
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diff changeset
239 subparsers = parser.add_subparsers(title='list of commands')
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240 for c in commands:
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241 p = subparsers.add_parser(c.name, help=c.description)
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242 c.setupParser(p, app)
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diff changeset
243 p.set_defaults(func=c.checkedRun)
371
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diff changeset
244 p.set_defaults(cache_name=c.cache_name)
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diff changeset
245
57
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246 help_cmd = next(filter(lambda c: c.name == 'help', commands), None)
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247 if help_cmd and help_cmd.has_topics:
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diff changeset
248 with io.StringIO() as epilog:
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diff changeset
249 epilog.write("additional help topics:\n")
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diff changeset
250 for name, desc in help_cmd.getTopics():
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diff changeset
251 print_help_item(epilog, name, desc)
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diff changeset
252 parser.epilog = epilog.getvalue()
57
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diff changeset
253
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254 # Parse the command line.
384
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255 result = parser.parse_args(argv)
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256 logger.debug(format_timed(start_time, 'initialized PieCrust',
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257 colored=False))
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258
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259 # Print the help if no command was specified.
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260 if not hasattr(result, 'func'):
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261 parser.print_help()
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262 return 0
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263
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264 # Use a customized cache for the command and current config.
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265 if result.cache_name != 'default' or cache_key != 'default':
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266 app.useSubCache(result.cache_name, cache_key)
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267
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268 # Run the command!
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269 ctx = CommandContext(app, parser, result)
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270 ctx.config_variant = pre_args.config_variant
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271 ctx.config_values = pre_args.config_values
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272
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273 exit_code = result.func(ctx)
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274 if exit_code is None:
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275 return 0
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276 if not isinstance(exit_code, int):
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277 logger.error("Got non-integer exit code: %s" % exit_code)
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278 return -1
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279 return exit_code
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280