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annotate mercurial/archival.py @ 4398:3b7e284b8f28

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merge: expand and simplify the invalid handling for directory moves
author Matt Mackall <mpm@selenic.com>
date Thu, 03 May 2007 17:24:43 -0500
parents 3f1b0c0fb4fd
children 6af107c742bf
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1 # archival.py - revision archival for mercurial
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2 #
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3 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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4 #
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5 # This software may be used and distributed according to the terms of
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6 # the GNU General Public License, incorporated herein by reference.
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7
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8 from demandload import *
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9 from i18n import gettext as _
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10 from node import *
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11 demandload(globals(), 'cStringIO os stat tarfile time util zipfile')
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12
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13 def tidyprefix(dest, prefix, suffixes):
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14 '''choose prefix to use for names in archive. make sure prefix is
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15 safe for consumers.'''
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16
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17 if prefix:
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18 prefix = prefix.replace('\\', '/')
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19 else:
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20 if not isinstance(dest, str):
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21 raise ValueError('dest must be string if no prefix')
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22 prefix = os.path.basename(dest)
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23 lower = prefix.lower()
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24 for sfx in suffixes:
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25 if lower.endswith(sfx):
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26 prefix = prefix[:-len(sfx)]
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27 break
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28 lpfx = os.path.normpath(util.localpath(prefix))
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29 prefix = util.pconvert(lpfx)
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30 if not prefix.endswith('/'):
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31 prefix += '/'
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32 if prefix.startswith('../') or os.path.isabs(lpfx) or '/../' in prefix:
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33 raise util.Abort(_('archive prefix contains illegal components'))
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34 return prefix
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35
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36 class tarit:
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37 '''write archive to tar file or stream. can write uncompressed,
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38 or compress with gzip or bzip2.'''
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39
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40 def __init__(self, dest, prefix, mtime, kind=''):
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41 self.prefix = tidyprefix(dest, prefix, ['.tar', '.tar.bz2', '.tar.gz',
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42 '.tgz', '.tbz2'])
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43 self.mtime = mtime
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44 if isinstance(dest, str):
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45 self.z = tarfile.open(dest, mode='w:'+kind)
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46 else:
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47 # Python 2.5-2.5.1 have a regression that requires a name arg
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48 self.z = tarfile.open(name='', mode='w|'+kind, fileobj=dest)
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49
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50 def addfile(self, name, mode, data):
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51 i = tarfile.TarInfo(self.prefix + name)
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52 i.mtime = self.mtime
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53 i.size = len(data)
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54 i.mode = mode
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55 self.z.addfile(i, cStringIO.StringIO(data))
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56
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57 def done(self):
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58 self.z.close()
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59
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60 class tellable:
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61 '''provide tell method for zipfile.ZipFile when writing to http
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62 response file object.'''
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63
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64 def __init__(self, fp):
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65 self.fp = fp
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66 self.offset = 0
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67
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68 def __getattr__(self, key):
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69 return getattr(self.fp, key)
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70
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71 def write(self, s):
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72 self.fp.write(s)
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73 self.offset += len(s)
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74
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75 def tell(self):
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76 return self.offset
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77
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78 class zipit:
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79 '''write archive to zip file or stream. can write uncompressed,
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80 or compressed with deflate.'''
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81
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82 def __init__(self, dest, prefix, mtime, compress=True):
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83 self.prefix = tidyprefix(dest, prefix, ('.zip',))
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84 if not isinstance(dest, str):
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85 try:
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86 dest.tell()
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87 except (AttributeError, IOError):
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88 dest = tellable(dest)
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89 self.z = zipfile.ZipFile(dest, 'w',
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90 compress and zipfile.ZIP_DEFLATED or
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91 zipfile.ZIP_STORED)
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92 self.date_time = time.gmtime(mtime)[:6]
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93
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94 def addfile(self, name, mode, data):
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95 i = zipfile.ZipInfo(self.prefix + name, self.date_time)
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96 i.compress_type = self.z.compression
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97 i.flag_bits = 0x08
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98 # unzip will not honor unix file modes unless file creator is
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99 # set to unix (id 3).
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100 i.create_system = 3
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101 i.external_attr = (mode | stat.S_IFREG) << 16L
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102 self.z.writestr(i, data)
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103
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104 def done(self):
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105 self.z.close()
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106
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107 class fileit:
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108 '''write archive as files in directory.'''
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109
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110 def __init__(self, name, prefix, mtime):
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111 if prefix:
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112 raise util.Abort(_('cannot give prefix when archiving to files'))
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113 self.basedir = name
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114 self.dirs = {}
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115 self.oflags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY |
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116 getattr(os, 'O_BINARY', 0) |
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117 getattr(os, 'O_NOFOLLOW', 0))
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118
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119 def addfile(self, name, mode, data):
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120 destfile = os.path.join(self.basedir, name)
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121 destdir = os.path.dirname(destfile)
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122 if destdir not in self.dirs:
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123 if not os.path.isdir(destdir):
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124 os.makedirs(destdir)
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125 self.dirs[destdir] = 1
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126 os.fdopen(os.open(destfile, self.oflags, mode), 'wb').write(data)
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127
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128 def done(self):
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129 pass
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130
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131 archivers = {
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132 'files': fileit,
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133 'tar': tarit,
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134 'tbz2': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'bz2'),
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135 'tgz': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'gz'),
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136 'uzip': lambda name, prefix, mtime: zipit(name, prefix, mtime, False),
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137 'zip': zipit,
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138 }
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139
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140 def archive(repo, dest, node, kind, decode=True, matchfn=None,
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141 prefix=None, mtime=None):
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142 '''create archive of repo as it was at node.
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143
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144 dest can be name of directory, name of archive file, or file
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145 object to write archive to.
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146
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147 kind is type of archive to create.
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148
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149 decode tells whether to put files through decode filters from
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150 hgrc.
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151
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152 matchfn is function to filter names of files to write to archive.
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153
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154 prefix is name of path to put before every archive member.'''
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155
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156 def write(name, mode, data):
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157 if matchfn and not matchfn(name): return
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158 if decode:
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159 fp = cStringIO.StringIO()
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160 repo.wwrite(name, data, fp)
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161 data = fp.getvalue()
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162 archiver.addfile(name, mode, data)
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163
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164 change = repo.changelog.read(node)
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165 mn = change[0]
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166 archiver = archivers[kind](dest, prefix, mtime or change[2][0])
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167 m = repo.manifest.read(mn)
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168 items = m.items()
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169 items.sort()
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170 write('.hg_archival.txt', 0644,
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171 'repo: %s\nnode: %s\n' % (hex(repo.changelog.node(0)), hex(node)))
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172 for filename, filenode in items:
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173 write(filename, m.execf(filename) and 0755 or 0644,
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174 repo.file(filename).read(filenode))
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175 archiver.done()