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annotate profilemanager/manager.py @ 74:b6bb59b79525

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* return the backed-up profile * further test restoring profiles
author Jeff Hammel <jhammel@mozilla.com>
date Fri, 07 May 2010 17:09:32 -0700
parents 1cfd259f74cf
children a63dd19807c8
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1 """
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2 manage Mozilla/Firefox profiles
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3 """
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4
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5 import os
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6 import shutil
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7 import string
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8 import tempfile
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9 import time
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10 import ConfigParser
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11 from datetime import datetime
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12 from dateutil.parser import parse
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13 from random import Random
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14 from utils import format_tabular
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15 from ConfigParser import SafeConfigParser as ConfigParser
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16
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17 # Changes to profiles.ini:
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18 # - add a ``backups`` field for each profile:
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19 # Backups = /path/to/backup:1273104310 /path/to/other/backup:1273104355
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20
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21 class ProfileNotFound(Exception):
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22 """
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23 exception when a profile is specified but is not present in a given
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24 .ini file
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25 """
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26 def __init__(self, profile, config):
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27 self.profile = profile
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28 self.config = config
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29 Exception.__init__(self,
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30 'Profile %s not found in %s' % (profile, config))
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31
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32 class NoBackupError(Exception):
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33 """
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34 exception when a sought backup is not found
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35 """
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36
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37 class ProfileManager(object):
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38
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39 backups_dir = 'backups' # directory for backups relative to profile_dir
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40
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41 def __init__(self, profiles):
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42 """
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43 - profiles: filesystem path to profiles.ini file
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44 """
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45 self.profiles = profiles
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46 self.profile_dir = os.path.abspath(os.path.dirname(profiles))
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47
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48 ### (public) API
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49
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50 def new(self, name, directory=None, hash=True):
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51 """
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52 generate a new clean profile
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53 - name: name of the profile to generate
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54 - directory: where to create the profile [DEFAULT: relative to profiles.ini]
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55 - hash: whether to generate a a random hash tag
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56 """
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57
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58 # path to the profile directory
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59 dirname = name
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60 relative = False
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61 if hash:
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62 dirname = '%s.%s' % (self.hash(), dirname)
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63 if not directory:
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64 directory = self.profile_dir
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65 relative = True
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66 path = os.path.join(directory, dirname)
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67
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68 # create directory
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69 # TODO: (optionally) pre-populate the directory a la Firefox
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70 os.mkdir(path)
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71
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72 # update profiles.ini
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73 self.add(name, relative and dirname or path, relative)
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74
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75 # return the directory name
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76 return path
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77
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78 def remove(self, name, delete=True):
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79 """
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80 remove a profile from profiles.ini
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81 - delete: delete the profile directory as well
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82 """
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83 parser = self.parser()
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84 section = self.section(name, parser)
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85 if section is None:
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86 raise ProfileNotFound(profile, self.profiles)
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87 if delete: # remove the profile from disk
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88 shutil.rmtree(self.path(name))
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89 parser.remove_section(section)
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90 self.write(parser)
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91
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92 def list(self, directories=False):
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93 """
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94 lists the profiles available in the config file
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95 - directories : display the directories
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96 """
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97 profiles = self.profiles_dict()
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98 if not directories:
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99 return sorted(profiles.keys())
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100 return dict([(name, self.path(name)) for name in profiles.keys()])
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101
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102 def clone(self, source, dest, add=True):
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103 """
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104 clones the profile `source` and output to `dest`
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105 - add: add the profile to the profiles.ini file
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106 """
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107
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108 # filesystem path of the `from` profile
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109 source_path = self.path(source)
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110
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111 # dest: fs path to back up to
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112 relative = False
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113 if os.path.sep in dest:
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114 if not os.path.isabs(dest):
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115 dest = os.path.abspath(dest)
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116 dirname = dest
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117 name = os.path.basename(dest)
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118 else:
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119 name = dest
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120 relative = True
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121 if add:
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122 dirname = '%s.%s' % (self.hash(), name)
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123 dest = os.path.join(self.profile_dir, dirname)
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124
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125 # update profiles.ini
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126 if add:
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127 self.add(name, dirname, relative)
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128
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129 # copy the files
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130 shutil.copytree(source_path, dest, symlinks=False)
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131
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132 return dest
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133
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134 def backup(self, profile, dest=None):
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135 """
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136 backup a profile
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137 - profile: name of the profile to be backed up
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138 - dest: name of the destination; if not given, a default is used
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139 """
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140
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141 # get the profile section
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142 parser = self.parser()
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143 section = self.section(profile)
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144 if section is None:
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145 raise ProfileNotFound(profile, self.profiles)
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146
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147 # determine destination directory
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148 if dest is None:
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149 dest = '%s.%d.bak' % (profile, int(time.time()))
47
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150 name = dest
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151 backups_dir = os.path.join(self.profile_dir, self.backups_dir)
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152 if not os.path.exists(backups_dir):
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153 os.mkdir(backups_dir)
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154 dest = os.path.join(backups_dir, dest)
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155 else:
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156 if not os.path.isabs(dest):
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157 dest = os.path.abspath(dest)
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158 name = dest
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159
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160 # copy the files
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161 self.clone(profile, dest, add=False)
47
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162
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163 # add backup entry to profiles.ini (colon separated):
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164 # `Backup=$(profile)s.$(datestamp)s.bak`
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165 if parser.has_option(section, 'Backups'):
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166 backups = '%s:%s' % (parser.get(section, 'Backups'), name)
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167 else:
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168 backups = name
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169 parser.set(section, 'Backups', backups)
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170 self.write(parser)
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171
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172 def backups(self, profile=None, datestamp=None):
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173 """
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174 list backups for a given profile, or all profiles if the
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175 profile is not given; returns a list of backups if
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176 profile is given or a dictionary of lists otherwise
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177 - datestamp: format of date; otherwise, seconds since epoch
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178 """
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179 if profile is None: # all profiles
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180 retval = {}
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181 profiles_dict = self.profiles_dict()
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182 for profile in profiles_dict:
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183 if 'Backups' in profiles_dict[profile]:
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184 retval[profile] = self.backups(profile, datestamp)
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185 return retval
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186
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187 # single profile
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188 profile_dict = self.profile_dict(profile)
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189 if 'Backups' not in profile_dict:
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190 return []
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191 backups = profile_dict['Backups'].split(':')
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192 backups_dirs = []
52
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193 for backup in backups:
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194 if os.path.isabs(backup):
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195 backup_dir = backup
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196 else:
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197 backup_dir = os.path.join(self.profile_dir, self.backups_dir, backup)
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198 backups_dirs.append((backup, int(os.path.getmtime(backup_dir))))
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199 # TODO: check if the getmtime == the datestamp for relative backups
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200
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201 # sort by reverse datestamp
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202 backups_dirs.sort(key=lambda x: x[1], reverse=True)
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203
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204 # format to datestamps, if applicable
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205 if datestamp:
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206 backups_dirs = [ (i[0], time.strftime(datestamp,
52
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207 time.localtime(int(i[1]))))
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208 for i in backups_dirs ]
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209
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210 return backups_dirs
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211
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212 def restore(self, profile, date=None, delete=False):
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213 """
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214 restore the profile from a backup
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215 the most recent backup is used unless `date` is given
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216 - date : date to restore from (will not delete)
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217 - delete : delete the backup after restoration
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218 """
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219
65
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220 assert not (date and delete), 'date and delete cannot be used in conjunction'
73
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221 orig_date = date
65
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222
66
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223 # get the path to the profile
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224 path = self.path(profile)
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225
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226 # get the possible backups
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227 backups = self.backups(profile)
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228 # TODO: check to see if these all exist (print warnings if not)
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229
65
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230 # determine the backup to use
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231 if date:
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232
1cd3e3c71bff determine which backup to use from the given date
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233 if isinstance(date, basestring):
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234
1cd3e3c71bff determine which backup to use from the given date
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diff changeset
235 # test for s since epoch
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236 seconds_snice_epoch = None
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237 try:
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238 seconds_since_epoch = int(date)
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239
1cd3e3c71bff determine which backup to use from the given date
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240 except ValueError:
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241 pass
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diff changeset
242 if seconds_since_epoch and seconds_since_epoch > time.localtime().tm_year:
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diff changeset
243 date = seconds_since_epoch
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244 else:
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diff changeset
245 date = parse(date) # parse date from string
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diff changeset
246
1cd3e3c71bff determine which backup to use from the given date
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diff changeset
247 if isinstance(date, datetime):
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diff changeset
248 # convert to s since epoch
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249 date = time.mktime(date.timetuple())
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250
1cd3e3c71bff determine which backup to use from the given date
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diff changeset
251 for backup in backups:
73
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diff changeset
252 if backup[1] < date:
1cfd259f74cf finish dated backups, untested
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diff changeset
253 break
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diff changeset
254 else:
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diff changeset
255 raise NoBackupError("No backups for profile %s in %s earlier than %s" % (profile, self.profiles, orig_date))
65
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diff changeset
256 else:
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diff changeset
257 if not backups:
1cd3e3c71bff determine which backup to use from the given date
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diff changeset
258 raise NoBackupError("No backups for profile %s in %s" % (profile, self.profiles))
66
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diff changeset
259 backup = backups[0]
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diff changeset
260
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261 # determine path of the backup
67
7da81d5545a2 missing :
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diff changeset
262 if os.path.isabs(backup[0]):
66
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diff changeset
263 backup_path = backup
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diff changeset
264 else:
69
86b137d49467 use only the path element, not the whole tuple
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diff changeset
265 backup_path = os.path.join(self.profile_dir, self.backups_dir, backup[0])
65
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266
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267 # restore the backup over ``profile``
66
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268 # make a backup copy first to avoid data loss
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269 tempdir = tempfile.mktemp()
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diff changeset
270 shutil.move(path, tempdir)
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diff changeset
271 try:
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diff changeset
272 shutil.copytree(backup_path, path)
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273 except Exception, e:
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diff changeset
274 shutil.rmtree(path)
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diff changeset
275 shutil.move(tempdir, path)
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diff changeset
276 raise IOError("Couldn't restore backup: %s" % str(e))
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277 shutil.rmtree(tempdir)
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diff changeset
278 # TODO: (optionally) make a backup of the current profile before restore
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279
7205cb6f5530 various flushing out, deleting old TODOs and making new ones
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280 if delete: # delete the backup
66
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281
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282 # delete the directory
66
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diff changeset
283 shutil.rmtree(backup_path)
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284
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285 # delete the entry from ``profiles.ini``
66
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diff changeset
286 parser = self.parser()
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diff changeset
287 section = self.section(profile)
70
6e282cacd5f0 split the string
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diff changeset
288 backups = parser.get(section, 'Backups').split(':')
66
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diff changeset
289 backups = [ i for i in backups if i != backup[0] ]
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diff changeset
290 parser.set(section, 'Backups', ':'.join(backups))
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diff changeset
291
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diff changeset
292 # if there are no backups, delete the ``backups`` line
66
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diff changeset
293 # and the backups directory
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diff changeset
294 if not backups:
71
494ea3c2f578 use correct ConfigParser method
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diff changeset
295 parser.remove_option(section, 'Backups')
66
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diff changeset
296 backups_dir = os.path.join(self.profile_dir, self.backups_dir)
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297 if not os.listdir(backups_dir):
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298 shutil.rmtree(backups_dir)
47
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299
74
b6bb59b79525 * return the backed-up profile
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diff changeset
300 # return which backup is restored
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diff changeset
301 return backup
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302
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303 def temporary(self):
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304 """make a temporary profile"""
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305 raise NotImplementedError
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306
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307 def merge(self, output, *profiles):
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308 """merge a set of profiles (not trivial!)"""
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309 raise NotImplementedError
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310
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311 ### internal functions
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312
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313 def add(self, profile, path, relative=True):
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314 """
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315 add a profile entry to profiles.ini
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316 """
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317
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318 # ensure name is not already present
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319 assert profile not in self.profiles_dict(), 'Profile "%s" already in %s' % (name, self.profiles)
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320 parser = self.parser()
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321
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322 # find and add the section
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323 ctr = 0
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324 section = 'Profile%d' % ctr # unsure of this naming convention
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325 while section in parser.sections():
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326 ctr += 1
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327 section = 'Profile%d' % ctr
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328 parser.add_section(section)
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329
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330 # add metadata
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331 parser.set(section, 'Name', profile)
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332 parser.set(section, 'IsRelative', '%d' % int(relative))
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333 parser.set(section, 'Path', path)
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334 if not ctr:
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335 parser.set(section, 'Default', '1')
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336
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337 # write the file
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338 self.write(parser)
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339
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340 def path(self, profile):
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341 """returns the path to the profile"""
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342 profile = self.profile_dict(profile)
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343 if profile.get('IsRelative', None) == '1':
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344 return os.path.join(self.profile_dir, profile['Path'])
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345 return profile['Path']
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346
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347 def parser(self):
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348 """
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349 return a ConfigParser instance appropriate to profiles.ini
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350 """
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351 parser = ConfigParser()
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352 parser.optionxform = str
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353 parser.read(self.profiles)
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354 return parser
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355
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356 def write(self, parser):
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357 f = file(self.profiles, 'w')
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358 parser.write(f)
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359 f.close()
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360
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361 def section(self, profile, parser=None):
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362 """
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363 returns the name of the section that a profile is in or None
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364 if not found
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365 """
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366 if parser is None:
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367 parser = self.parser()
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368 for section in parser.sections():
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369 if not parser.has_option(section, 'Name'):
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370 continue # not a profile
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371 if parser.get(section, 'Name') == profile:
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372 return section
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373
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374 def profile_dict(self, profile):
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375 """
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376 return option dictionary for a single profile
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377 """
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378 parser = self.parser()
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379 section = self.section(profile, parser)
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380 if section is None:
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381 raise ProfileNotFound(profile, self.profiles)
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382 return dict(parser.items(section))
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383
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384 def profiles_dict(self):
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385 """
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386 return nested dict of all profiles
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387 """
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388 # assumes profiles have unique names
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389 parser = self.parser()
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390 retval = {}
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391 for section in parser.sections():
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392 if section == 'General':
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393 continue
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394 if not parser.has_option(section, 'Name'):
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395 continue
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396 name = parser.get(section, 'Name')
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397 retval[name] = self.profile_dict(name)
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398 return retval
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399
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400 def hash(self):
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401 """
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402 generate a random hash for a new profile
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403 """
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404 population = string.lowercase + string.digits
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405 return ''.join(Random().sample(population, 8))
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406
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diff changeset
407