annotate python/hgrc.py @ 505:ab405b339112

python/hgrc.py
author Jeff Hammel <jhammel@mozilla.com>
date Sat, 31 Aug 2013 20:18:01 -0700
parents 67404c3a4d75
children 2a5eee9418ba
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1 #!/usr/bin/env python
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2
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3 """
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4 Script for modifying hgrc files.
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5
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6 If no arguments specified, the repository given by `hg root` is used.
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7
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8 [WIP] If http(s):// arguments are given, create hgrc file from such a thing
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9 """
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10
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11 # imports
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12 import optparse
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13 import os
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14 import subprocess
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15 import sys
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16 import urlparse
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17 from collections import OrderedDict
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18 from ConfigParser import RawConfigParser as ConfigParser
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19 from StringIO import StringIO
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20
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21 ### global methods
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22
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23 class section(object):
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24 def __init__(self, section_name, *section_names):
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25 self.sections = [section_name]
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26 self.sections.extend(section_names)
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27 def __call__(self, function):
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28 def wrapped(parser, *args, **kwargs):
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29 for section in self.sections:
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30 if section not in parser.sections():
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31 parser.add_section(section)
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32 function(parser, *args, **kwargs)
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33 return wrapped
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34
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35 #@parser # decorator makes this x-form path -> ConfigParser automagically
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36 @section('paths')
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37 def set_default(parser, default):
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38 """set [paths]:default"""
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39 parser.set('paths', 'default', default)
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41
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42 @section('paths')
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43 def set_default_push(parser, default_push):
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44 """
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45 set [paths]:default-push to `default_push`
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46 """
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47 parser.set('paths', 'default-push', default_push)
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49
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50 def set_default_push_to_ssh(parser):
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51 """
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52 set `[paths]:default-push` to that given by `[paths]:default` but
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53 turn the protocol to 'ssh'
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54 If `[paths]:default` is not there, do nothing.
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55 Returns True if written, otherwise False
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56 """
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57
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58 # get [paths]:default value
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59 if 'paths' not in parser.sections():
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60 return False
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61 if not parser.has_option('paths', 'default'):
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62 return False
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63 default = parser.get('paths', 'default')
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64
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65 # parse URL
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66 scheme, netloc, path, query, anchor = urlparse.urlsplit(default)
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67 ssh_url = urlparse.urlunsplit(('ssh', netloc, path, query, anchor))
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68
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69 # set
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70 set_default_push(parser, ssh_url)
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71 return True # XXX could instead be url to set to or old value
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72
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73
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74 def main(args=sys.argv[1:]):
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75
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76 # parse command line arguments
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77 usage = '%prog [options] repository <repository> <...>'
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78 parser = optparse.OptionParser(usage=usage, description=__doc__)
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79 parser.add_option('-l', '--list', dest='list_hgrc',
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80 action='store_true', default=False,
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81 help="list full path to hgrc files")
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82 parser.add_option('--ssh', dest='default_push_ssh',
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83 action='store_true', default=False,
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84 help="use `default` entries for `default-push`")
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85 parser.add_option('--push', '--default-push', dest='default_push',
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86 help="set [paths] default-push location")
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87 parser.add_option('-d', '--default', dest='default',
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88 help="set [paths] default entry")
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89 parser.add_option('-p', '--print', dest='print_ini',
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90 action='store_true', default=False,
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91 help="print .ini contents")
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92 parser.add_option('--dry-run', dest='dry_run',
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93 action='store_true', default=False,
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94 help="don't write to disk")
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95 options, args = parser.parse_args(args)
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96
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97 # sanitization
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98 if options.default_push and options.default_push_ssh:
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99 parser.error("Cannot set --push and --ssh")
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100
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101 # if not specified, use repo from `hg root`
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102 if not args:
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103 args = [subprocess.check_output(['hg', 'root']).strip()]
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104
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105 # if not specified, set a default action
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106 default_action = 'default_push_ssh'
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107 available_actions = ('default',
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108 'default_push',
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109 'default_push_ssh',
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110 'print_ini',
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111 'list_hgrc',
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112 )
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113 actions = [(name, getattr(options, name))
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114 for name in available_actions
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115 if getattr(options, name)]
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116 if not actions:
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117 # add a default action for our convenience
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118 actions = [('default_push_ssh', True)]
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119 actions = OrderedDict(actions)
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120 if not actions:
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121 parser.error("Please specify an action")
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122
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123 # find all hgrc files
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124 hgrc = []
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125 missing = []
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126 not_hg = []
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127 not_a_directory = []
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128 errors = {'Missing path': missing,
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129 'Not a mercurial directory': not_hg,
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130 'Not a directory': not_a_directory,
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131 }
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132 for path in args:
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133 if not os.path.exists(path):
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134 missing.append(path)
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135 path = os.path.abspath(os.path.normpath(path))
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136 if os.path.isdir(path):
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137 basename = os.path.basename(path)
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138 subhgdir = os.path.join(path, '.hg') # hypothetical .hg subdirectory
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139 if basename == '.hg':
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140 hgrcpath = os.path.join(path, 'hgrc')
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141 elif os.path.exists(subhgdir):
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142 if not os.path.isdir(subhgdir):
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143 not_a_directory.append(subhgdir)
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144 continue
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145 hgrcpath = os.path.join(subhgdir, 'hgrc')
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146 else:
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147 not_hg.append(path)
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148 continue
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149 hgrc.append(hgrcpath)
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150 else:
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151 assert os.path.isfile(path), "%s is not a file, exiting" % path
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152 hgrc.append(path)
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153
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154 # raise errors if encountered
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155 if filter(None, errors.values()):
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156 for key, value in errors.items():
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157 if value:
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158 print '%s: %s' % (key, ', '.join(value))
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159 parser.exit(1)
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160
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161 # construct ConfigParser objects and
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162 # ensure that all the files are parseable
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163 config = {}
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164 for path in hgrc:
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165 config[path] = ConfigParser()
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166 if isinstance(path, basestring):
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167 if os.path.exists(path):
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168 config[path].read(path)
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169
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170 # print the chosen hgrc paths
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171 if 'list_hgrc' in actions:
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172 print '\n'.join(hgrc)
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173
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174 # remove from actions list
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175 actions.pop('list_hgrc', None)
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176
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177 # map of actions -> functions;
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178 # XXX this is pretty improv; to be improved
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179 action_map = {'default_push_ssh': set_default_push_to_ssh,
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180 'default_push': set_default_push,
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181 'default': set_default
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182 }
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183
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184 # cache for later (XXX)
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185 print_ini = actions.pop('print_ini', None)
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186
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187 # alter .hgrc files
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188 for action_name, parameter in actions.items():
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189
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190 # XXX crappy
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191 method = action_map[action_name]
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192 if action_name == 'default_push_ssh':
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193 parameter = None
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194
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195 # apply to all files
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196 for path, ini in config.items():
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197
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198 # call method with parser
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199 if parameter is None:
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200 method(ini)
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201 else:
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202 method(ini, parameter)
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203
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204 # print .hgrc files, if specified
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205 if print_ini:
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206 values = []
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207 for path, ini in config.items():
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208 _buffer = StringIO()
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209 ini.write(_buffer)
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210 values.append('+++ %s\n%s' % (path, _buffer.getvalue()))
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211 print '\n'.join(values)
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212
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213 # write .ini files
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214 for path, ini in config.items():
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215 with file(path, 'w') as f:
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216 ini.write(f)
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217
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218 if __name__ == '__main__':
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219 main()