Mercurial > hgsubversion

annotate push_cmd.py @ 150:58ae90a65f41

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push: Improved the rebasing logic for push so that it doesn't break with keeping branch names during rebase.
author Augie Fackler <durin42@gmail.com>
date Mon, 22 Dec 2008 21:21:11 -0600
parents 1da7aafdd323
children 2decec74ad0c
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1 from mercurial import util as merc_util
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2 from mercurial import hg
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3 from svn import core
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4
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5 import util
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6 import hg_delta_editor
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7 import svnwrap
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8 import fetch_command
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9 import utility_commands
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10
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11
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12 @util.register_subcommand('push')
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13 @util.register_subcommand('dcommit') # for git expats
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14 def push_revisions_to_subversion(ui, repo, hg_repo_path, svn_url,
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15 stupid=False, **opts):
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16 """Push revisions starting at a specified head back to Subversion.
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17 """
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18 oldencoding = merc_util._encoding
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19 merc_util._encoding = 'UTF-8'
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20 hge = hg_delta_editor.HgChangeReceiver(hg_repo_path,
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21 ui_=ui)
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22 svn_commit_hashes = dict(zip(hge.revmap.itervalues(),
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23 hge.revmap.iterkeys()))
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24 # Strategy:
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25 # 1. Find all outgoing commits from this head
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26 outgoing = util.outgoing_revisions(ui, repo, hge, svn_commit_hashes)
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27 if not (outgoing and len(outgoing)):
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28 ui.status('No revisions to push.')
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29 return 0
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30 if len(repo.parents()) != 1:
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31 ui.status('Cowardly refusing to push branch merge')
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32 return 1
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33 while outgoing:
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34 oldest = outgoing.pop(-1)
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35 old_ctx = repo[oldest]
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36 if len(old_ctx.parents()) != 1:
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37 ui.status('Found a branch merge, this needs discussion and '
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38 'implementation.')
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39 return 1
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40 base_n = old_ctx.parents()[0].node()
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41 old_children = repo[base_n].children()
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42 svnbranch = repo[base_n].branch()
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43 oldtip = base_n
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44 samebranchchildren = [c for c in repo[oldtip].children() if c.branch() == svnbranch
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45 and c.node() in svn_commit_hashes]
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46 while samebranchchildren:
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47 oldtip = samebranchchildren[0].node()
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48 samebranchchildren = [c for c in repo[oldtip].children() if c.branch() == svnbranch
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49 and c.node() in svn_commit_hashes]
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50 # 2. Commit oldest revision that needs to be pushed
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51 base_revision = svn_commit_hashes[base_n][0]
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52 commit_from_rev(ui, repo, old_ctx, hge, svn_url, base_revision)
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53 # 3. Fetch revisions from svn
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54 r = fetch_command.fetch_revisions(ui, svn_url, hg_repo_path,
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55 stupid=stupid)
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56 assert not r or r == 0
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57 # 4. Find the new head of the target branch
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58 repo = hg.repository(ui, hge.path)
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59 oldtipctx = repo[oldtip]
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60 replacement = [c for c in oldtipctx.children() if c not in old_children
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61 and c.branch() == oldtipctx.branch()]
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62 assert len(replacement) == 1, 'Replacement node came back as: %r' % replacement
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63 replacement = replacement[0]
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64 # 5. Rebase all children of the currently-pushing rev to the new branch
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65 heads = repo.heads(old_ctx.node())
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66 for needs_transplant in heads:
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67 def extrafn(ctx, extra):
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68 if ctx.node() == oldest:
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69 return
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70 extra['branch'] = ctx.branch()
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71 hg.clean(repo, needs_transplant)
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72 utility_commands.rebase_commits(ui, repo, hg_repo_path, extrafn=extrafn, **opts)
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73 repo = hg.repository(ui, hge.path)
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74 if needs_transplant in outgoing:
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75 hg.clean(repo, repo['tip'].node())
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76 hge = hg_delta_editor.HgChangeReceiver(hg_repo_path, ui_=ui)
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77 svn_commit_hashes = dict(zip(hge.revmap.itervalues(),
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78 hge.revmap.iterkeys()))
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79 outgoing = util.outgoing_revisions(ui, repo, hge,
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80 svn_commit_hashes)
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81 merc_util._encoding = oldencoding
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82 return 0
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83
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84 def _getdirchanges(svn, branchpath, parentctx, ctx, changedfiles):
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85 """Compute directories to add or delete when moving from parentctx
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86 to ctx, assuming only 'changedfiles' files changed.
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87
83
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88 Return (added, deleted) where 'added' is the list of all added
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89 directories and 'deleted' the list of deleted directories.
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90 Intermediate directories are included: if a/b/c is new and requires
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91 the addition of a/b and a, those will be listed too. Intermediate
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92 deleted directories are also listed, but item order of undefined
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93 in either list.
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94 """
83
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95 def exists(svndir):
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96 try:
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97 svn.list_dir('%s/%s' % (branchpath, svndir))
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98 return True
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99 except core.SubversionException:
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100 return False
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101
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102 def finddirs(path):
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103 pos = path.rfind('/')
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104 while pos != -1:
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105 yield path[:pos]
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106 pos = path.rfind('/', 0, pos)
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107
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108 def getctxdirs(ctx, keptdirs):
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109 dirs = {}
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110 for f in ctx.manifest():
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111 for d in finddirs(f):
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112 if d in dirs:
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113 break
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114 if d in keptdirs:
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115 dirs[d] = 1
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116 return dirs
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117
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118 deleted, added = [], []
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119 changeddirs = {}
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120 for f in changedfiles:
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121 if f in parentctx and f in ctx:
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122 # Updated files cannot cause directories to be created
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123 # or removed.
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124 continue
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125 for d in finddirs(f):
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126 changeddirs[d] = 1
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127 if not changeddirs:
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128 return added, deleted
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129 olddirs = getctxdirs(parentctx, changeddirs)
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130 newdirs = getctxdirs(ctx, changeddirs)
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131
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132 for d in newdirs:
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133 if d not in olddirs and not exists(d):
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134 added.append(d)
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135
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136 for d in olddirs:
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137 if d not in newdirs and exists(d):
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138 deleted.append(d)
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139
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140 return added, deleted
150
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141
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142
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143 def commit_from_rev(ui, repo, rev_ctx, hg_editor, svn_url, base_revision):
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144 """Build and send a commit from Mercurial to Subversion.
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145 """
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146 file_data = {}
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147 svn = svnwrap.SubversionRepo(svn_url, username=merc_util.getuser())
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148 parent = rev_ctx.parents()[0]
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149 parent_branch = rev_ctx.parents()[0].branch()
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150 branch_path = 'trunk'
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151
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152 if parent_branch and parent_branch != 'default':
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153 branch_path = 'branches/%s' % parent_branch
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154
150
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155 addeddirs, deleteddirs = _getdirchanges(svn, branch_path, parent,
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156 rev_ctx, rev_ctx.files())
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157 deleteddirs = set(deleteddirs)
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158
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159 props = {}
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160 copies = {}
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161 for file in rev_ctx.files():
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162 new_data = base_data = ''
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163 action = ''
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164 if file in rev_ctx:
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165 fctx = rev_ctx.filectx(file)
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166 new_data = fctx.data()
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167
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168 if 'x' in fctx.flags():
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169 props.setdefault(file, {})['svn:executable'] = '*'
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170 if 'l' in fctx.flags():
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171 props.setdefault(file, {})['svn:special'] = '*'
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172
0
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173 if file not in parent:
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174 renamed = fctx.renamed()
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175 if renamed:
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176 # TODO current model (and perhaps svn model) does not support
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177 # this kind of renames: a -> b, b -> c
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178 copies[file] = renamed[0]
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179 base_data = parent[renamed[0]].data()
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180
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181 action = 'add'
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182 dirname = '/'.join(file.split('/')[:-1] + [''])
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183 else:
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184 base_data = parent.filectx(file).data()
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185 if ('x' in parent.filectx(file).flags()
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186 and 'x' not in rev_ctx.filectx(file).flags()):
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187 props.setdefault(file, {})['svn:executable'] = None
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188 if ('l' in parent.filectx(file).flags()
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189 and 'l' not in rev_ctx.filectx(file).flags()):
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190 props.setdefault(file, {})['svn:special'] = None
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191 action = 'modify'
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192 else:
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193 pos = file.rfind('/')
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194 if pos >= 0:
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195 if file[:pos] in deleteddirs:
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196 # This file will be removed when its directory is removed
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197 continue
0
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198 base_data = parent.filectx(file).data()
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199 action = 'delete'
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200 file_data[file] = base_data, new_data, action
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201
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202 # Now we are done with files, we can prune deleted directories
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203 # against themselves: ignore a/b if a/ is already removed
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204 deleteddirs2 = list(deleteddirs)
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205 deleteddirs2.sort()
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206 deleteddirs2.reverse()
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207 for d in deleteddirs2:
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208 pos = d.rfind('/')
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209 if pos >= 0 and d[:pos] in deleteddirs:
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210 deleteddirs.remove(d[:pos])
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211
70
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212 def svnpath(p):
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213 return '%s/%s' % (branch_path, p)
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214
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215 newcopies = {}
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216 for source, dest in copies.iteritems():
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217 newcopies[svnpath(source)] = (svnpath(dest), base_revision)
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218
83
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219 new_target_files = [svnpath(f) for f in file_data]
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220 for tf, ntf in zip(file_data, new_target_files):
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221 if tf in file_data:
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222 file_data[ntf] = file_data[tf]
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223 if tf in props:
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224 props[ntf] = props[tf]
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225 del props[tf]
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226 if merc_util.binary(file_data[ntf][1]):
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227 props.setdefault(ntf, {}).update(props.get(ntf, {}))
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228 props.setdefault(ntf, {})['svn:mime-type'] = 'application/octet-stream'
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229 del file_data[tf]
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230
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231 addeddirs = [svnpath(d) for d in addeddirs]
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232 deleteddirs = [svnpath(d) for d in deleteddirs]
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233 new_target_files += addeddirs + deleteddirs
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234 try:
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235 svn.commit(new_target_files, rev_ctx.description(), file_data,
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236 base_revision, set(addeddirs), set(deleteddirs),
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237 props, newcopies)
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238 except core.SubversionException, e:
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239 if hasattr(e, 'apr_err') and e.apr_err == 160028:
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240 raise merc_util.Abort('Base text was out of date, maybe rebase?')
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241 else:
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242 raise