Mercurial > mozilla > hg > ProfileManager

annotate profilemanager/manager.py @ 56:2dde7dcc899e

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better docstring
author Jeff Hammel <jhammel@mozilla.com>
date Fri, 07 May 2010 11:37:41 -0700
parents f3812255ce6e
children 3b4b87faa2a8
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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 time
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9 import ConfigParser
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10 from random import Random
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11 from utils import format_tabular
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12 from ConfigParser import SafeConfigParser as ConfigParser
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13
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14 # Changes to profiles.ini:
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15 # - add a ``backups`` field for each profile:
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16 # Backups = /path/to/backup:1273104310 /path/to/other/backup:1273104355
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17
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18 class ProfileNotFound(Exception):
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19 """
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20 exception when a profile is specified but is not present in a given
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21 .ini file
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22 """
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23 def __init__(self, profile, config):
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24 self.profile = profile
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25 self.config = config
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26 Exception.__init__('Profile %s not found in %s' % (profile, config))
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27
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28 class ProfileManager(object):
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29
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30 backups_dir = 'backups' # directory for backups relative to profile_dir
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31
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32 def __init__(self, profiles):
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33 """
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34 - profiles: filesystem path to profiles.ini file
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35 """
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36 self.profiles = profiles
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37 self.profile_dir = os.path.abspath(os.path.dirname(profiles))
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38
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39 ### (public) API
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40
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41 def new(self, name, directory=None, hash=True):
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42 """
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43 generate a new clean profile
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44 - name: name of the profile to generate
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45 - directory: where to create the profile [DEFAULT: relative to profiles.ini]
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46 - hash: whether to generate a a random hash tag
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47 """
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48
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49 # path to the profile directory
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50 dirname = name
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51 relative = False
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52 if hash:
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53 dirname = '%s.%s' % (self.hash(), dirname)
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54 if not directory:
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55 directory = self.profile_dir
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56 relative = True
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57 path = os.path.join(directory, dirname)
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58
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59 # create directory
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60 # TODO: (optionally) pre-populate the directory a la Firefox
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61 os.mkdir(path)
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62
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63 # update profiles.ini
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64 self.add(name, relative and dirname or path, relative)
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65
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66 # return the directory name
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67 return path
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68
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69 def remove(self, name, delete=True):
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70 """
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71 remove a profile from profiles.ini
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72 - delete: delete the profile directory as well
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73 """
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74 parser = self.parser()
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75 section = self.section(name, parser)
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76 if section is None:
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77 raise ProfileNotFound(profile, self.profiles)
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78 if delete: # remove the profile from disk
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79 shutil.rmtree(self.path(name))
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80 parser.remove_section(section)
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81 self.write(parser)
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82
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83 def list(self, directories=False):
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84 """
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85 lists the profiles available in the config file
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86 - directories : display the directories
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87 """
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88 profiles = self.profiles_dict()
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89 if not directories:
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90 return sorted(profiles.keys())
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91 return dict([(name, self.path(name)) for name in profiles.keys()])
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92
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93 def clone(self, source, dest, add=True):
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94 """
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95 clones the profile `source` and output to `dest`
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96 - add: add the profile to the profiles.ini file
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97 """
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98
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99 # filesystem path of the `from` profile
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100 source_path = self.path(source)
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101
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102 # dest: fs path to back up to
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103 relative = False
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104 if os.path.sep in dest:
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105 if not os.path.isabs(dest):
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106 dest = os.path.abspath(dest)
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107 dirname = dest
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108 name = os.path.basename(dest)
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109 else:
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110 name = dest
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111 relative = True
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112 if add:
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113 dirname = '%s.%s' % (self.hash(), name)
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114 dest = os.path.join(self.profile_dir, dirname)
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115
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116 # update profiles.ini
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117 if add:
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118 self.add(name, dirname, relative)
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119
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120 # copy the files
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121 shutil.copytree(source_path, dest, symlinks=False)
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122
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123 return dest
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124
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125 def backup(self, profile, dest=None):
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126 """
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127 backup a profile
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128 - profile: name of the profile to be backed up
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129 - dest: name of the destination; if not given, a default is used
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130 """
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131
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132 # get the profile section
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133 parser = self.parser()
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134 section = self.section(profile)
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135 if profile is None:
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136 raise ProfileNotFound(profile, self.profiles)
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137
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138 # determine destination directory
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139 if dest is None:
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140 dest = '%s.%d.bak' % (profile, int(time.time()))
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141 name = dest
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142 backups_dir = os.path.join(self.profile_dir, self.backups_dir)
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143 if not os.path.exists(backups_dir):
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144 os.mkdir(backups_dir)
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145 dest = os.path.join(backups_dir, dest)
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146 else:
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147 if not os.path.isabs(dest):
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148 dest = os.path.abspath(dest)
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149 name = dest
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150
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151 # copy the files
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152 self.clone(profile, dest, add=False)
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153
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154
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155 # add backup entry to profiles.ini (colon separated):
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156 # `Backup=$(profile)s.$(datestamp)s.bak`
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157 if parser.has_option(section, 'Backups'):
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158 backups = '%s:%s' % (parser.get(section, 'Backups'), name)
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159 else:
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160 backups = name
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161 parser.set(section, 'Backups', backups)
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162 self.write(parser)
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163
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164 def backups(self, profile=None, datestamp=None):
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165 """
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166 list backups for a given profile, or all profiles if the
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167 profile is not given; returns a list of backups if
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168 profile is given or a dictionary of lists otherwise
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169 - datestamp: format of date; otherwise, seconds since epoch
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170 """
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171 if profile is None: # all profiles
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172 # XXX this should probably be recursive
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173 retval = {}
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174 profiles_dict = self.profiles_dict()
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175 for profile in profiles_dict:
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176 if 'Backups' in profiles_dict[profile]:
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177 retval[profile] = profiles_dict[profile].split(':')
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178 return retval
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179
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180 # single profile
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181 profile_dict = self.profile_dict(profile)
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182 if 'Backups' not in profile_dict:
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183 return []
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184 backups = profile_dict['Backups'].split(':')
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185 backup_dirs = []
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186 for backup in backups:
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187 if os.path.isabs(backup):
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188 backup_dir = backup
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189 else:
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190 backup_dir = os.path.join(self.profile_dir, self.backups_dir, backup)
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191 backups_dirs.append((backup, int(os.path.getmtime(backup_dir))))
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192 # TODO: check if the getmtime == the datestamp for relative backups
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193
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194 # sort by reverse datestamp
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195 backups_dirs.sort(key=lambda x: x[1], reverse=True)
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196
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197 # format to datestamps, if applicable
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198 if datestamp:
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199 backup_dirs = [ (i[0], time.strftime(datestamp,
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200 time.localtime(int(i[1]))))
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201 for i in backup_dirs ]
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202
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203 return backups_dirs
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204
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205 def restore(self, profile, date=None, delete=False):
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206 """
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207 restore the profile from a backup
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208 the most recent backup is used unless `date` is given
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209 - date : date to restore from
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210 - delete : delete the backup after restoration
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211 """
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212
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213 # get the possible backups
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214 backups = self.backups(profile)
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215 # TODO: check to see if these all exist (print warnings if not)
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216
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217 # restore the backup over ``profile``
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218
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219 if delete: # delete the backup
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220 # delete the directory
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221 # delete the entry from ``profiles.ini``
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222 # if there are no backups, delete the ``backups`` line
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223 pass #TODO
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224
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225 def temporary(self):
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226 """make a temporary profile"""
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227 raise NotImplementedError
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228
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229 def merge(self, output, *profiles):
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230 """merge a set of profiles (not trivial!)"""
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231 raise NotImplementedError
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232
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233 ### internal functions
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234
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235 def add(self, profile, path, relative=True):
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236 """
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237 add a profile entry to profiles.ini
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238 """
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239
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240 # ensure name is not already present
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241 assert profile not in self.profiles_dict(), 'Profile "%s" already in %s' % (name, self.profiles)
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242 parser = self.parser()
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243
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244 # find and add the section
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245 ctr = 0
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246 section = 'Profile%d' % ctr # unsure of this naming convention
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247 while section in parser.sections():
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248 ctr += 1
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249 section = 'Profile%d' % ctr
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250 parser.add_section(section)
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251
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252 # add metadata
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253 parser.set(section, 'Name', profile)
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254 parser.set(section, 'IsRelative', '%d' % int(relative))
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255 parser.set(section, 'Path', path)
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256 if not ctr:
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257 parser.set(section, 'Default', '1')
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258
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259 # write the file
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260 self.write(parser)
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261
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262 def path(self, profile):
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263 """returns the path to the profile"""
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264 profile = self.profile_dict(profile)
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265 if profile.get('isrelative', None) == '1':
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266 return os.path.join(self.profile_dir, profile['path'])
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267 return profile['path']
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268
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269 def parser(self):
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270 """
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271 return a ConfigParser instance appropriate to profiles.ini
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272 """
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273 parser = ConfigParser()
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274 parser.read(self.profiles)
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275 return parser
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276
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277 def write(self, parser):
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278 f = file(self.profiles, 'w')
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279 parser.write(f)
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280 f.close()
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281
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282 def section(self, profile, parser=None):
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283 """
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284 returns the name of the section that a profile is in or None
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285 if not found
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286 """
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287 if parser is None:
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288 parser = self.parser()
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289 for section in parser.sections():
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290 if not parser.has_option(section, 'name'):
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291 continue # not a profile
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292 if parser.get(section, 'name') == profile:
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293 return section
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294
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295 def profile_dict(self, profile):
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296 """
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297 return option dictionary for a single profile
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298 """
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299 parser = self.parser()
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300 section = self.section(profile, parser)
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301 if section is None:
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302 raise ProfileNotFound(profile, self.profiles)
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303 return dict(parser.items(section))
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304
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305 def profiles_dict(self):
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306 """
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307 return nested dict of all profiles
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308 """
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309 # assumes profiles have unique names
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310 parser = self.parser()
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311 retval = {}
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312 for section in parser.sections():
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313 if section == 'General':
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314 continue
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315 try:
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316 name = parser.get(section, 'name')
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317 except ConfigParser.NoOptionError:
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318 continue
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319 retval[name] = self.profile_dict(name)
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320 return retval
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321
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322
8
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323 def hash(self):
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324 """
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325 generate a random hash for a new profile
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326 """
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327 population = string.lowercase + string.digits
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328 return ''.join(Random().sample(population, 8))
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329
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330