annotate mercurial/archival.py @ 9431:d1b135f2f415

convert: fix history topology when using hg.tagsbranch When using hg.tagsbranch, all conversions fail at transcribing the source repo topology with conversion scenarios interleaving: - initial repo conversion, - then upstream tag - then later incremental conversion The problem is caused by the usage of the last source revid as source revid for the tagnode in the revision map. On a later incremental conversion, when resolving some child commit of the true last source revid, convert will parent the nodes to the tag node. If using tagsbranch you get a bad topology where all incremental commit nodes end up in the tag branch. Analysis and test by Edouard Gomez <ed.gomez@free.fr>
author Patrick Mezard <pmezard@gmail.com>
date Sun, 06 Sep 2009 15:29:14 +0200
parents c5f36402daad
children 58edd448da4f
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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 the
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6 # GNU General Public License version 2, incorporated herein by reference.
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7
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8 from i18n import _
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9 from node import hex
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10 import util
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11 import cStringIO, os, stat, tarfile, time, zipfile
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12 import zlib, gzip
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13
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14 def tidyprefix(dest, prefix, suffixes):
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15 '''choose prefix to use for names in archive. make sure prefix is
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16 safe for consumers.'''
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17
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18 if prefix:
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19 prefix = util.normpath(prefix)
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20 else:
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21 if not isinstance(dest, str):
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22 raise ValueError('dest must be string if no prefix')
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23 prefix = os.path.basename(dest)
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24 lower = prefix.lower()
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25 for sfx in suffixes:
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26 if lower.endswith(sfx):
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27 prefix = prefix[:-len(sfx)]
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28 break
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29 lpfx = os.path.normpath(util.localpath(prefix))
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30 prefix = util.pconvert(lpfx)
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31 if not prefix.endswith('/'):
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32 prefix += '/'
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33 if prefix.startswith('../') or os.path.isabs(lpfx) or '/../' in prefix:
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34 raise util.Abort(_('archive prefix contains illegal components'))
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35 return prefix
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36
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37 class tarit(object):
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38 '''write archive to tar file or stream. can write uncompressed,
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39 or compress with gzip or bzip2.'''
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40
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41 class GzipFileWithTime(gzip.GzipFile):
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42
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43 def __init__(self, *args, **kw):
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44 timestamp = None
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45 if 'timestamp' in kw:
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46 timestamp = kw.pop('timestamp')
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47 if timestamp is None:
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48 self.timestamp = time.time()
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49 else:
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50 self.timestamp = timestamp
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51 gzip.GzipFile.__init__(self, *args, **kw)
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52
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53 def _write_gzip_header(self):
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54 self.fileobj.write('\037\213') # magic header
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55 self.fileobj.write('\010') # compression method
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56 # Python 2.6 deprecates self.filename
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57 fname = getattr(self, 'name', None) or self.filename
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58 flags = 0
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59 if fname:
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60 flags = gzip.FNAME
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61 self.fileobj.write(chr(flags))
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62 gzip.write32u(self.fileobj, long(self.timestamp))
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63 self.fileobj.write('\002')
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64 self.fileobj.write('\377')
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65 if fname:
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66 self.fileobj.write(fname + '\000')
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67
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68 def __init__(self, dest, prefix, mtime, kind=''):
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69 self.prefix = tidyprefix(dest, prefix, ['.tar', '.tar.bz2', '.tar.gz',
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70 '.tgz', '.tbz2'])
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71 self.mtime = mtime
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72
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73 def taropen(name, mode, fileobj=None):
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74 if kind == 'gz':
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75 mode = mode[0]
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76 if not fileobj:
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77 fileobj = open(name, mode + 'b')
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78 gzfileobj = self.GzipFileWithTime(name, mode + 'b',
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79 zlib.Z_BEST_COMPRESSION,
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80 fileobj, timestamp=mtime)
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81 return tarfile.TarFile.taropen(name, mode, gzfileobj)
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82 else:
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83 return tarfile.open(name, mode + kind, fileobj)
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84
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85 if isinstance(dest, str):
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86 self.z = taropen(dest, mode='w:')
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87 else:
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88 # Python 2.5-2.5.1 have a regression that requires a name arg
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89 self.z = taropen(name='', mode='w|', fileobj=dest)
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90
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91 def addfile(self, name, mode, islink, data):
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92 i = tarfile.TarInfo(self.prefix + name)
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93 i.mtime = self.mtime
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94 i.size = len(data)
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95 if islink:
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96 i.type = tarfile.SYMTYPE
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97 i.mode = 0777
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98 i.linkname = data
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99 data = None
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100 i.size = 0
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101 else:
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102 i.mode = mode
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103 data = cStringIO.StringIO(data)
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104 self.z.addfile(i, data)
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105
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106 def done(self):
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107 self.z.close()
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108
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109 class tellable(object):
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110 '''provide tell method for zipfile.ZipFile when writing to http
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111 response file object.'''
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112
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113 def __init__(self, fp):
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114 self.fp = fp
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115 self.offset = 0
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116
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117 def __getattr__(self, key):
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118 return getattr(self.fp, key)
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119
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120 def write(self, s):
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121 self.fp.write(s)
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122 self.offset += len(s)
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123
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124 def tell(self):
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125 return self.offset
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126
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127 class zipit(object):
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128 '''write archive to zip file or stream. can write uncompressed,
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129 or compressed with deflate.'''
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130
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131 def __init__(self, dest, prefix, mtime, compress=True):
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132 self.prefix = tidyprefix(dest, prefix, ('.zip',))
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133 if not isinstance(dest, str):
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134 try:
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135 dest.tell()
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136 except (AttributeError, IOError):
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137 dest = tellable(dest)
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138 self.z = zipfile.ZipFile(dest, 'w',
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139 compress and zipfile.ZIP_DEFLATED or
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140 zipfile.ZIP_STORED)
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141 self.date_time = time.gmtime(mtime)[:6]
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142
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143 def addfile(self, name, mode, islink, data):
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144 i = zipfile.ZipInfo(self.prefix + name, self.date_time)
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145 i.compress_type = self.z.compression
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146 # unzip will not honor unix file modes unless file creator is
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147 # set to unix (id 3).
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148 i.create_system = 3
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149 ftype = stat.S_IFREG
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150 if islink:
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151 mode = 0777
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152 ftype = stat.S_IFLNK
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153 i.external_attr = (mode | ftype) << 16L
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154 self.z.writestr(i, data)
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155
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156 def done(self):
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157 self.z.close()
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158
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159 class fileit(object):
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160 '''write archive as files in directory.'''
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161
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162 def __init__(self, name, prefix, mtime):
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163 if prefix:
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164 raise util.Abort(_('cannot give prefix when archiving to files'))
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165 self.basedir = name
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166 self.opener = util.opener(self.basedir)
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167
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168 def addfile(self, name, mode, islink, data):
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169 if islink:
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170 self.opener.symlink(data, name)
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171 return
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172 f = self.opener(name, "w", atomictemp=True)
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173 f.write(data)
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174 f.rename()
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175 destfile = os.path.join(self.basedir, name)
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176 os.chmod(destfile, mode)
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177
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178 def done(self):
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179 pass
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180
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181 archivers = {
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182 'files': fileit,
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183 'tar': tarit,
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184 'tbz2': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'bz2'),
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185 'tgz': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'gz'),
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186 'uzip': lambda name, prefix, mtime: zipit(name, prefix, mtime, False),
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187 'zip': zipit,
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188 }
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189
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190 def archive(repo, dest, node, kind, decode=True, matchfn=None,
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191 prefix=None, mtime=None):
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192 '''create archive of repo as it was at node.
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193
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194 dest can be name of directory, name of archive file, or file
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195 object to write archive to.
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196
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197 kind is type of archive to create.
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198
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199 decode tells whether to put files through decode filters from
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200 hgrc.
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201
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202 matchfn is function to filter names of files to write to archive.
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203
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204 prefix is name of path to put before every archive member.'''
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205
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206 def write(name, mode, islink, getdata):
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207 if matchfn and not matchfn(name): return
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208 data = getdata()
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209 if decode:
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210 data = repo.wwritedata(name, data)
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211 archiver.addfile(name, mode, islink, data)
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212
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213 if kind not in archivers:
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214 raise util.Abort(_("unknown archive type '%s'") % kind)
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215
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216 ctx = repo[node]
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217 archiver = archivers[kind](dest, prefix, mtime or ctx.date()[0])
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218
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219 if repo.ui.configbool("ui", "archivemeta", True):
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220 write('.hg_archival.txt', 0644, False,
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221 lambda: 'repo: %s\nnode: %s\n' % (
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222 hex(repo.changelog.node(0)), hex(node)))
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223 for f in ctx:
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224 ff = ctx.flags(f)
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225 write(f, 'x' in ff and 0755 or 0644, 'l' in ff, ctx[f].data)
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226 archiver.done()