Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/archival.py @ 2931:0843bd53dcff
Fix bug #345.
The last hit for a file might have been before the last window, so we
can't clear copies. To reduce the load, we only store real copy
entries instead of storing hashes for every revision.
author | Brendan Cully <brendan@kublai.com> |
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date | Fri, 18 Aug 2006 10:05:44 -0700 |
parents | 18cf5349a361 |
children | 1d2fdea875bc |
rev | line source |
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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 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, mtime, 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(mtime)[: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, mtime): |
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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, mtime: tarit(name, prefix, mtime, 'bz2'), |
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134 'tgz': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'gz'), |
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135 'uzip': lambda name, prefix, mtime: zipit(name, prefix, mtime, 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, mtime=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) |
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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 change = repo.changelog.read(node) |
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164 mn = change[0] |
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165 archiver = archivers[kind](dest, prefix, mtime or change[2][0]) |
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166 m = repo.manifest.read(mn) |
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167 items = m.items() |
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168 items.sort() |
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169 write('.hg_archival.txt', 0644, |
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170 'repo: %s\nnode: %s\n' % (hex(repo.changelog.node(0)), hex(node))) |
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171 for filename, filenode in items: |
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172 write(filename, m.execf(filename) and 0755 or 0644, |
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173 repo.file(filename).read(filenode)) |
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174 archiver.done() |