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2364
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1 #!/usr/bin/env python
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2 #
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3 # Copyright (C) 2006 - Marco Barisione <marco@barisione.org>
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4 #
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5 # This is a small extension for Mercurial (http://www.selenic.com/mercurial)
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6 # that removes files not known to mercurial
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7 #
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8 # This program is free software; you can redistribute it and/or modify
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9 # it under the terms of the GNU General Public License as published by
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10 # the Free Software Foundation; either version 2 of the License, or
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11 # (at your option) any later version.
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12 #
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13 # This program is distributed in the hope that it will be useful,
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 # GNU General Public License for more details.
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17 #
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18 # You should have received a copy of the GNU General Public License
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19 # along with this program; if not, write to the Free Software
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20 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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21
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22 from mercurial import hg, util
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23 import os
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24
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25 class Purge(object):
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26 '''removes files not tracked by mercurial
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27
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28 Delete files not known to mercurial, this is useful to test local and
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29 uncommitted changes in the otherwise clean source tree.
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30
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31 This means that purge will delete:
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32 - Unknown files: files marked with "?" by "hg status"
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33 - Ignored files: files usually ignored by Mercurial because they match a
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34 pattern in a ".hgignore" file
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35 - Empty directories: infact Mercurial ignores directories unless they
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36 contain files under source control managment
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37 But it will leave untouched:
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38 - Unmodified tracked files
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39 - Modified tracked files
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40 - New files added to the repository (with "hg add")
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41
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42 If names are given, only files matching the names are considered, else
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43 all files in the repository directory are considered.
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44
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45 Be careful with purge, you could irreversibly delete some files you
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46 forgot to add to the repository. If you only want to print the list of
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47 files that this program would delete use the -vn options.
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48 '''
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49
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50 def __init__(self, act=True, abort_on_err=False):
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51 self._repo = None
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52 self._ui = None
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53 self._hg_root = None
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54 self._act = act
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55 self._abort_on_err = abort_on_err
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56
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57 def purge(self, ui, repo, paths=None):
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58 self._repo = repo
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59 self._ui = ui
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60 self._hg_root = self._split_path(repo.root)
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61
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62 if not paths:
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63 paths = [repo.root]
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64
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65 for path in paths:
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66 path = os.path.abspath(path)
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67 for root, dirs, files in os.walk(path, topdown=False):
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68 if '.hg' in self._split_path(root):
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69 # Skip files in the .hg directory.
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70 # Note that if the repository is in a directory
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71 # called .hg this command does not work.
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72 continue
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73 for name in files:
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74 self._remove_file(os.path.join(root, name))
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75 if not os.listdir(root):
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76 # Remove this directory if it is empty.
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77 self._remove_dir(root)
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78
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79 self._repo = None
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80 self._ui = None
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81 self._hg_root = None
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82
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83 def _error(self, msg):
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84 if self._abort_on_err:
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85 raise util.Abort(msg)
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86 else:
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87 ui.warn('warning: ' + msg + '\n')
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88
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89 def _remove_file(self, name):
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90 relative_name = self._relative_name(name)
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91 # dirstate.state() requires a path relative to the root
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92 # directory.
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93 if self._repo.dirstate.state(relative_name) != '?':
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94 return
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95 if self._ui.verbose:
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96 self._ui.status(name + '\n')
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97 if self._act:
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98 try:
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99 os.remove(name)
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100 except OSError, e:
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101 error('"%s" cannot be removed' % name)
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102
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103 def _remove_dir(self, name):
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104 if self._ui.verbose:
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105 self._ui.status(name + '\n')
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106 if self._act:
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107 try:
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108 os.rmdir(name)
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109 except OSError, e:
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110 error('"%s" cannot be removed' % name)
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111
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112 def _relative_name(self, name):
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113 splitted_path = self._split_path(name)[len(self._hg_root):]
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114 return self._join_path(splitted_path)
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115
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116 def _split_path(self, path):
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117 ret = []
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118 while True:
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119 head, tail = os.path.split(path)
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120 if tail:
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121 ret.append(tail)
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122 if head == path:
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123 ret.append(head)
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124 break
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125 path = head
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126 ret.reverse()
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127 return ret
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128
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129 def _join_path(self, splitted_path):
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130 ret = ''
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131 for part in splitted_path:
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132 if ret:
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133 ret = os.path.join(ret, part)
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134 else:
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135 ret = part
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136 return ret
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137
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138 def from_command(ui, repo, *paths, **opts):
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139 act = True
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140 if opts['nothing']:
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141 act = False
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142
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143 abort_on_err = True
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144 if not opts['abort_on_err']:
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145 abort_on_err = False
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146
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147 p = Purge(act, abort_on_err)
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148 p.purge(ui, repo, paths)
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149
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150 # The docstring of from_command() is used by hg to print the help
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151 # of the command.
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152 from_command.__doc__ = __doc__
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153 from_command = staticmethod(from_command)
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154
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155
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156 cmdtable = {
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157 'purge': (Purge.from_command,
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158 [('a', 'abort-on-err', None, 'abort if an error occurs'),
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159 ('n', 'nothing', None, 'do nothing on files, useful with --verbose'),
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160 ],
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161 'hg purge [OPTIONS] [NAME]')
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162 }
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