Mercurial > hg > hg-fastimport

annotate hgfastimport/hgimport.py @ 41:a1ccf1817b65

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Abort if a commit has first parent == second parent.
author Greg Ward <greg-hg@gerg.ca>
date Sun, 10 May 2009 10:27:18 -0400
parents 0eb03c70c8f0
children 71f1e5ed6213
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # Copyright (C) 2008 Canonical Ltd
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2 #
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3 # This program is free software; you can redistribute it and/or modify
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4 # it under the terms of the GNU General Public License as published by
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5 # the Free Software Foundation; either version 2 of the License, or
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6 # (at your option) any later version.
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7 #
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8 # This program is distributed in the hope that it will be useful,
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9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 # GNU General Public License for more details.
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12 #
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13 # You should have received a copy of the GNU General Public License
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14 # along with this program; if not, write to the Free Software
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15 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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16
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17 """Processor of import commands.
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18
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19 This module provides core processing functionality including an abstract class
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20 for basing real processors on. See the processors package for examples.
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21 """
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22
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23 import os
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24 import os.path
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25 import errno
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26 import shutil
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27
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28 import mercurial.hg
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29 import mercurial.commands
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30 from mercurial import util
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31 from mercurial.node import nullrev
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32
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33 from fastimport import processor
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34 from hgfastimport import hgechoprocessor
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35
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36 class HgImportProcessor(processor.ImportProcessor):
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37
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38 def __init__(self, ui, repo, **opts):
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39 self.ui = ui
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40 self.repo = repo
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41 self.opts = opts
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42 self.last_commit = None # CommitCommand object
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43 self.mark_map = {} # map mark (e.g. ":1") to changelog node ID(?)
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44 self.branch_map = {} # map git branch name to changelog node ID(?)
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45
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46 self.numblobs = 0 # for progress reporting
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47 self.blobdir = None
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48
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49 def setup(self):
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50 """Setup before processing any streams."""
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51 pass
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52
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53 def teardown(self):
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54 """Cleanup after processing all streams."""
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55 if self.blobdir and os.path.exists(self.blobdir):
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56 self.ui.status("Removing blob dir %r ...\n" % self.blobdir)
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57 shutil.rmtree(self.blobdir)
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58
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59 def progress_handler(self, cmd):
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60 self.ui.write("Progress: %s\n" % cmd.message)
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61
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62 def blob_handler(self, cmd):
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63 if self.blobdir is None: # no blobs seen yet
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64 # XXX cleanup?
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65 self.blobdir = os.path.join(self.repo.root, ".hg", "blobs")
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66 os.mkdir(self.blobdir)
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67
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68 fn = self.getblobfilename(cmd.id)
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69 blobfile = open(fn, "wb")
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70 #self.ui.debug("writing blob %s to %s (%d bytes)\n"
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71 # % (cmd.id, fn, len(cmd.data)))
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72 blobfile.write(cmd.data)
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73 blobfile.close()
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74
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75 self.numblobs += 1
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76 if self.numblobs % 500 == 0:
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77 self.ui.status("%d blobs read\n" % self.numblobs)
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78
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79 def getblobfilename(self, blobid):
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80 if self.blobdir is None:
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81 raise RuntimeError("no blobs seen, so no blob directory created")
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82 # XXX should escape ":" for windows
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83 return os.path.join(self.blobdir, "blob-" + blobid)
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84
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85 def checkpoint_handler(self, cmd):
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86 # This command means nothing to us
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87 pass
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88
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89 def committish_rev(self, committish):
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90 if committish.startswith(":"):
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91 return self.mark_map[committish]
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92 else:
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93 return self.branch_map[committish]
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94
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95 def commit_handler(self, cmd):
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96 # XXX this assumes the fixup branch name used by cvs2git. In
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97 # contrast, git-fast-import(1) recommends "TAG_FIXUP" (not under
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98 # refs/heads), and implies that it can be called whatever the
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99 # creator of the fastimport dump wants to call it. So the name
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100 # of the fixup branch should be configurable!
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101 fixup = (cmd.ref == "refs/heads/TAG.FIXUP")
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102
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103 if fixup and self.last_commit is not None:
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104 # If this is a fixup commit, pretend it is on the same
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105 # branch as the previous commit. This gives sensible
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106 # behaviour for selecting the first parent and for
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107 # determining the Mercurial branch name.
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108 cmd.ref = self.last_commit.ref
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109
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110 if cmd.from_:
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111 first_parent = self.committish_rev(cmd.from_)
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112 else:
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113 first_parent = self.branch_map.get(cmd.ref, nullrev)
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114 #self.ui.write("First parent: %s\n" % first_parent)
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115 # Update to the first parent
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116 mercurial.hg.clean(self.repo, self.repo.lookup(first_parent))
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117 #self.ui.write("Bing\n")
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118 if cmd.merges:
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119 #self.ui.write("foo")
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120 if len(cmd.merges) > 1:
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121 raise NotImplementedError("Can't handle more than two parents")
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122 second_parent = self.committish_rev(cmd.merges[0])
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123 #self.ui.write("Second parent: %s\n" % second_parent)
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124 if second_parent == first_parent:
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125 raise util.Abort("bad fastimport dump: commit %s has %s as "
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126 "both parents"
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127 % (cmd.id, cmd.merges[0]))
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128
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129 mercurial.commands.debugsetparents(self.ui, self.repo,
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130 first_parent, second_parent)
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131 #self.ui.write("Bing\n")
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132 if cmd.ref == "refs/heads/master":
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133 branch = "default"
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134 else:
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135 branch = cmd.ref[len("refs/heads/"):]
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136 #self.ui.write("Branch: %s\n" % branch)
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137 self.repo.dirstate.setbranch(branch)
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138 #self.ui.write("Bing\n")
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139 #print "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv"
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140 commit_handler = HgImportCommitHandler(
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141 self, cmd, self.ui, self.repo, **self.opts)
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142 commit_handler.process()
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143 #print "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^"
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144 #self.ui.write(cmd.dump_str(verbose=True))
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145
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146 # in case we are converting from git or bzr, prefer author but
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147 # fallback to committer (committer is required, author is
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148 # optional)
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149 userinfo = cmd.author or cmd.committer
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150 user = "%s <%s>" % (userinfo[0], userinfo[1])
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151
37
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152 # Blech: have to monkeypatch mercurial.encoding to ensure that
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153 # everything under rawcommit() assumes the same encoding,
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154 # regardless of current locale.
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155 from mercurial import encoding
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156 encoding.encoding = "UTF-8"
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157
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158 files = commit_handler.filelist()
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159 assert type(cmd.message) is unicode
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160 text = cmd.message.encode("utf-8") # XXX cmd.message is unicode
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161 date = self.convert_date(userinfo)
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162 node = self.repo.rawcommit(
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163 files=files, text=text, user=user, date=date)
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164 rev = self.repo.changelog.rev(node)
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165 if cmd.mark is not None:
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166 self.mark_map[":" + cmd.mark] = rev
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167 if not fixup:
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168 self.branch_map[cmd.ref] = rev
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169 self.last_commit = cmd
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170 self.ui.write("Done commit of rev %d\n" % rev)
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171 #self.ui.write("%s\n" % self.mark_map)
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172
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173 def convert_date(self, c):
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174 res = (int(c[2]), int(c[3]))
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175 #print c, res
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176 #print type((0, 0)), type(res), len(res), type(res) is type((0, 0))
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177 #if type(res) is type((0, 0)) and len(res) == 2:
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178 # print "go for it"
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179 #return res
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180 return "%d %d" % res
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181
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182 def reset_handler(self, cmd):
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183 if cmd.from_ is not None:
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184 self.branch_map[cmd.ref] = self.committish_rev(cmd.from_)
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185
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186 def tag_handler(self, cmd):
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187 pass
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188
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189 class HgImportCommitHandler(processor.CommitHandler):
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190
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191 def __init__(self, parent, command, ui, repo, **opts):
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192 self.parent = parent # HgImportProcessor running the show
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193 self.command = command
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194 self.ui = ui
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195 self.repo = repo
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196 self.opts = opts
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197 self.files = set()
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198
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199 def _make_container(self, path):
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200 if '/' in path:
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201 d = os.path.dirname(path)
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202 if not os.path.isdir(d):
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203 os.makedirs(d)
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204
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205 def modify_handler(self, filecmd):
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206 #print "============================" + filecmd.path
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207 # FIXME: handle mode
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208 self.files.add(filecmd.path)
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209 fullpath = os.path.join(self.repo.root, filecmd.path)
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210 self._make_container(fullpath)
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211 #print "made dirs, writing file"
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212 if filecmd.dataref:
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213 # reference to a blob that has already appeared in the stream
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214 fn = self.parent.getblobfilename(filecmd.dataref)
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215 if os.path.exists(fullpath):
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216 os.remove(fullpath)
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217 try:
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218 os.link(fn, fullpath)
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219 except OSError, err:
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220 if err.errno == errno.ENOENT:
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221 # if this happens, it's a problem in the fast-import
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222 # stream
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223 raise util.Abort("bad blob ref %r (no such file %s)"
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224 % (filecmd.dataref, fn))
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225 else:
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226 # anything else is a bug in this extension
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227 # (cross-device move, permissions, etc.)
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228 raise
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229 elif filecmd.data:
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230 f = open(fullpath, "w")
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231 f.write(filecmd.data)
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232 f.close()
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233 else:
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234 raise RuntimeError("either filecmd.dataref or filecmd.data must be set")
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235 #print self.repo.add([filecmd.path])
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236 #print "Done:", filecmd.path
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237
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238 def delete_handler(self, filecmd):
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239 self.files.add(filecmd.path)
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240 self.repo.remove([filecmd.path], unlink=True)
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241
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242 #def copy_handler(self, filecmd):
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243 # self.files.add(filecmd.path)
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244 # """Handle a filecopy command."""
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245 # self.ui.write("Cmd: %s\n" % repr(filecmd))
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246
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247 #def rename_handler(self, filecmd):
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248 # self.files.add(filecmd.path)
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249 # """Handle a filerename command."""
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250 # self.ui.write("Cmd: %s\n" % repr(filecmd))
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251
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252 def filelist(self):
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253 return list(self.files)