Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/archival.py @ 4797:d00ca99bc54e

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convert svn: minor improvement to tag detection. The better way is probably to list the latest tags directory and look up the last log message for each entry. This is surprisingly annoying to do.
author Brendan Cully <brendan@kublai.com>
date Tue, 03 Jul 2007 20:22:39 -0700
parents 1d5a2ee683b0
children 74f36b1027f4
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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 i18n import _
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9 from node import *
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10 import cStringIO, os, stat, tarfile, time, util, zipfile
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11 import zlib, gzip
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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 class GzipFileWithTime(gzip.GzipFile):
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41
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42 def __init__(self, *args, **kw):
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43 timestamp = None
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44 if 'timestamp' in kw:
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45 timestamp = kw.pop('timestamp')
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46 if timestamp == None:
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47 self.timestamp = time.time()
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48 else:
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49 self.timestamp = timestamp
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50 gzip.GzipFile.__init__(self, *args, **kw)
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51
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52 def _write_gzip_header(self):
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53 self.fileobj.write('\037\213') # magic header
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54 self.fileobj.write('\010') # compression method
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55 fname = self.filename[:-3]
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56 flags = 0
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57 if fname:
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58 flags = gzip.FNAME
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59 self.fileobj.write(chr(flags))
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60 gzip.write32u(self.fileobj, long(self.timestamp))
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61 self.fileobj.write('\002')
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62 self.fileobj.write('\377')
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63 if fname:
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64 self.fileobj.write(fname + '\000')
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65
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66 def __init__(self, dest, prefix, mtime, kind=''):
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67 self.prefix = tidyprefix(dest, prefix, ['.tar', '.tar.bz2', '.tar.gz',
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68 '.tgz', '.tbz2'])
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69 self.mtime = mtime
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70
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71 def taropen(name, mode, fileobj=None):
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72 if kind == 'gz':
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73 mode = mode[0]
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74 if not fileobj:
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75 fileobj = open(name, mode + 'b')
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76 gzfileobj = self.GzipFileWithTime(name, mode + 'b',
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77 zlib.Z_BEST_COMPRESSION,
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78 fileobj, timestamp=mtime)
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79 return tarfile.TarFile.taropen(name, mode, gzfileobj)
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80 else:
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81 return tarfile.open(name, mode + kind, fileobj)
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82
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83 if isinstance(dest, str):
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84 self.z = taropen(dest, mode='w:')
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85 else:
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86 # Python 2.5-2.5.1 have a regression that requires a name arg
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87 self.z = taropen(name='', mode='w|', fileobj=dest)
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88
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89 def addfile(self, name, mode, data):
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90 i = tarfile.TarInfo(self.prefix + name)
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91 i.mtime = self.mtime
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92 i.size = len(data)
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93 i.mode = mode
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94 self.z.addfile(i, cStringIO.StringIO(data))
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95
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96 def done(self):
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97 self.z.close()
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98
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99 class tellable:
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100 '''provide tell method for zipfile.ZipFile when writing to http
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101 response file object.'''
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102
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103 def __init__(self, fp):
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104 self.fp = fp
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105 self.offset = 0
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106
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107 def __getattr__(self, key):
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108 return getattr(self.fp, key)
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109
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110 def write(self, s):
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111 self.fp.write(s)
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112 self.offset += len(s)
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113
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114 def tell(self):
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115 return self.offset
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116
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117 class zipit:
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118 '''write archive to zip file or stream. can write uncompressed,
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119 or compressed with deflate.'''
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120
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121 def __init__(self, dest, prefix, mtime, compress=True):
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122 self.prefix = tidyprefix(dest, prefix, ('.zip',))
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123 if not isinstance(dest, str):
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124 try:
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125 dest.tell()
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126 except (AttributeError, IOError):
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127 dest = tellable(dest)
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128 self.z = zipfile.ZipFile(dest, 'w',
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129 compress and zipfile.ZIP_DEFLATED or
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130 zipfile.ZIP_STORED)
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131 self.date_time = time.gmtime(mtime)[:6]
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132
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133 def addfile(self, name, mode, data):
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134 i = zipfile.ZipInfo(self.prefix + name, self.date_time)
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135 i.compress_type = self.z.compression
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136 # unzip will not honor unix file modes unless file creator is
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137 # set to unix (id 3).
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138 i.create_system = 3
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139 i.external_attr = (mode | stat.S_IFREG) << 16L
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140 self.z.writestr(i, data)
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141
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142 def done(self):
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143 self.z.close()
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144
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145 class fileit:
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146 '''write archive as files in directory.'''
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147
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148 def __init__(self, name, prefix, mtime):
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149 if prefix:
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150 raise util.Abort(_('cannot give prefix when archiving to files'))
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151 self.basedir = name
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152 self.dirs = {}
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153 self.oflags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY |
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154 getattr(os, 'O_BINARY', 0) |
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155 getattr(os, 'O_NOFOLLOW', 0))
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156
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157 def addfile(self, name, mode, data):
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158 destfile = os.path.join(self.basedir, name)
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159 destdir = os.path.dirname(destfile)
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160 if destdir not in self.dirs:
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161 if not os.path.isdir(destdir):
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162 os.makedirs(destdir)
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163 self.dirs[destdir] = 1
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164 os.fdopen(os.open(destfile, self.oflags, mode), 'wb').write(data)
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165
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166 def done(self):
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167 pass
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168
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169 archivers = {
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170 'files': fileit,
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171 'tar': tarit,
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172 'tbz2': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'bz2'),
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173 'tgz': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'gz'),
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174 'uzip': lambda name, prefix, mtime: zipit(name, prefix, mtime, False),
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175 'zip': zipit,
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176 }
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177
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178 def archive(repo, dest, node, kind, decode=True, matchfn=None,
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179 prefix=None, mtime=None):
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180 '''create archive of repo as it was at node.
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181
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182 dest can be name of directory, name of archive file, or file
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183 object to write archive to.
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184
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185 kind is type of archive to create.
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186
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187 decode tells whether to put files through decode filters from
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188 hgrc.
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189
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190 matchfn is function to filter names of files to write to archive.
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191
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192 prefix is name of path to put before every archive member.'''
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193
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194 def write(name, mode, data):
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195 if matchfn and not matchfn(name): return
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196 if decode:
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197 data = repo.wwritedata(name, data)
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198 archiver.addfile(name, mode, data)
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199
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200 ctx = repo.changectx(node)
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201 archiver = archivers[kind](dest, prefix, mtime or ctx.date()[0])
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202 m = ctx.manifest()
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203 items = m.items()
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204 items.sort()
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205 write('.hg_archival.txt', 0644,
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206 'repo: %s\nnode: %s\n' % (hex(repo.changelog.node(0)), hex(node)))
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207 for filename, filenode in items:
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208 write(filename, m.execf(filename) and 0755 or 0644,
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209 repo.file(filename).read(filenode))
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210 archiver.done()