Mercurial > piecrust2

annotate piecrust/main.py @ 549:7453baeb0839

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bake: Set the flags, don't combine. We don't want to combine old flags with new ones, especially if something went different between the last bake and the current one.
author Ludovic Chabant <ludovic@chabant.com>
date Tue, 04 Aug 2015 21:21:08 -0700
parents 186a29f61ddc
children 353a0b30f412
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
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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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diff changeset
246 help_cmd = next(filter(lambda c: c.name == 'help', commands), None)
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diff changeset
247 if help_cmd and help_cmd.has_topics:
99
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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.
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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