annotate mercurial/archival.py @ 2425:eee271568e8a default tip

Initial version of pyhgsh
author Josef "Jeff" Sipek <jeffpc@optonline.net>
date Sun, 18 Jun 2006 16:48:38 -0400
parents 0c0bfea3f72a
children
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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, 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 = int(time.time())
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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 self.z = tarfile.open(mode='w|'+kind, fileobj=dest)
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48
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49 def addfile(self, name, mode, data):
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50 i = tarfile.TarInfo(self.prefix + name)
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51 i.mtime = self.mtime
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52 i.size = len(data)
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53 i.mode = mode
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54 self.z.addfile(i, cStringIO.StringIO(data))
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55
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56 def done(self):
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57 self.z.close()
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58
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59 class tellable:
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60 '''provide tell method for zipfile.ZipFile when writing to http
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61 response file object.'''
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62
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63 def __init__(self, fp):
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64 self.fp = fp
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65 self.offset = 0
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66
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67 def __getattr__(self, key):
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68 return getattr(self.fp, key)
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69
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70 def write(self, s):
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71 self.fp.write(s)
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72 self.offset += len(s)
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73
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74 def tell(self):
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75 return self.offset
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76
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77 class zipit:
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78 '''write archive to zip file or stream. can write uncompressed,
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79 or compressed with deflate.'''
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80
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81 def __init__(self, dest, prefix, compress=True):
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82 self.prefix = tidyprefix(dest, prefix, ('.zip',))
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83 if not isinstance(dest, str):
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84 try:
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85 dest.tell()
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86 except (AttributeError, IOError):
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87 dest = tellable(dest)
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88 self.z = zipfile.ZipFile(dest, 'w',
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89 compress and zipfile.ZIP_DEFLATED or
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90 zipfile.ZIP_STORED)
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91 self.date_time = time.gmtime(time.time())[:6]
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92
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93 def addfile(self, name, mode, data):
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94 i = zipfile.ZipInfo(self.prefix + name, self.date_time)
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95 i.compress_type = self.z.compression
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96 i.flag_bits = 0x08
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97 # unzip will not honor unix file modes unless file creator is
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98 # set to unix (id 3).
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99 i.create_system = 3
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100 i.external_attr = (mode | stat.S_IFREG) << 16L
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101 self.z.writestr(i, data)
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102
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103 def done(self):
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104 self.z.close()
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105
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106 class fileit:
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107 '''write archive as files in directory.'''
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108
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109 def __init__(self, name, prefix):
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110 if prefix:
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111 raise util.Abort(_('cannot give prefix when archiving to files'))
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112 self.basedir = name
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113 self.dirs = {}
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114 self.oflags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY |
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115 getattr(os, 'O_BINARY', 0) |
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116 getattr(os, 'O_NOFOLLOW', 0))
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117
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118 def addfile(self, name, mode, data):
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119 destfile = os.path.join(self.basedir, name)
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120 destdir = os.path.dirname(destfile)
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121 if destdir not in self.dirs:
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122 if not os.path.isdir(destdir):
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123 os.makedirs(destdir)
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124 self.dirs[destdir] = 1
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125 os.fdopen(os.open(destfile, self.oflags, mode), 'wb').write(data)
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126
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127 def done(self):
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128 pass
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129
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130 archivers = {
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131 'files': fileit,
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132 'tar': tarit,
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133 'tbz2': lambda name, prefix: tarit(name, prefix, 'bz2'),
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134 'tgz': lambda name, prefix: tarit(name, prefix, 'gz'),
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135 'uzip': lambda name, prefix: zipit(name, prefix, False),
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136 'zip': zipit,
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137 }
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138
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139 def archive(repo, dest, node, kind, decode=True, matchfn=None,
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140 prefix=None):
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141 '''create archive of repo as it was at node.
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142
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143 dest can be name of directory, name of archive file, or file
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144 object to write archive to.
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145
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146 kind is type of archive to create.
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147
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148 decode tells whether to put files through decode filters from
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149 hgrc.
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150
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151 matchfn is function to filter names of files to write to archive.
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152
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153 prefix is name of path to put before every archive member.'''
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154
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155 def write(name, mode, data):
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156 if matchfn and not matchfn(name): return
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157 if decode:
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158 fp = cStringIO.StringIO()
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159 repo.wwrite(name, data, fp)
2112
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160 data = fp.getvalue()
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161 archiver.addfile(name, mode, data)
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162
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163 archiver = archivers[kind](dest, prefix)
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164 mn = repo.changelog.read(node)[0]
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165 mf = repo.manifest.read(mn).items()
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166 mff = repo.manifest.readflags(mn)
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167 mf.sort()
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168 write('.hg_archival.txt', 0644,
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169 'repo: %s\nnode: %s\n' % (hex(repo.changelog.node(0)), hex(node)))
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170 for filename, filenode in mf:
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171 write(filename, mff[filename] and 0755 or 0644,
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172 repo.file(filename).read(filenode))
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173 archiver.done()