Mercurial > hgsubversion

annotate push_cmd.py @ 85:05a0c4f6060f

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push_cmd: consider only dirs with added/removed files for addition or deletion
author Patrick Mezard <pmezard@gmail.com>
date Fri, 14 Nov 2008 16:18:24 -0600
parents 6c9b7cf1c5aa
children 6ecdbd22eb1d
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f2636cfed115 Initial import of hgsubversion into a public repository.
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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, **opts):
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15 """Push revisions starting at a specified head back to Subversion.
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16 """
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17 oldencoding = merc_util._encoding
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18 merc_util._encoding = 'UTF-8'
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19 hge = hg_delta_editor.HgChangeReceiver(hg_repo_path,
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20 ui_=ui)
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21 svn_commit_hashes = dict(zip(hge.revmap.itervalues(),
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22 hge.revmap.iterkeys()))
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23 # Strategy:
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24 # 1. Find all outgoing commits from this head
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25 outgoing = utility_commands.outgoing_revisions(ui, repo, hge,
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26 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 # 2. Commit oldest revision that needs to be pushed
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43 base_revision = svn_commit_hashes[old_ctx.parents()[0].node()][0]
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44 commit_from_rev(ui, repo, old_ctx, hge, svn_url, base_revision)
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45 # 3. Fetch revisions from svn
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46 r = fetch_command.fetch_revisions(ui, svn_url, hg_repo_path)
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47 assert not r or r == 0
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48 # 4. Find the new head of the target branch
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49 repo = hg.repository(ui, hge.path)
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50 base_c = repo[base_n]
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51 replacement = [c for c in base_c.children() if c not in old_children
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52 and c.branch() == old_ctx.branch()]
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53 assert len(replacement) == 1
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54 replacement = replacement[0]
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55 # 5. Rebase all children of the currently-pushing rev to the new branch
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56 heads = repo.heads(old_ctx.node())
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57 for needs_transplant in heads:
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58 hg.clean(repo, needs_transplant)
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59 utility_commands.rebase_commits(ui, repo, hg_repo_path, **opts)
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60 repo = hg.repository(ui, hge.path)
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61 if needs_transplant in outgoing:
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62 hg.clean(repo, repo['tip'].node())
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63 hge = hg_delta_editor.HgChangeReceiver(hg_repo_path, ui_=ui)
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64 svn_commit_hashes = dict(zip(hge.revmap.itervalues(),
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65 hge.revmap.iterkeys()))
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66 outgoing = utility_commands.outgoing_revisions(ui, repo, hge,
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67 svn_commit_hashes)
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68 merc_util._encoding = oldencoding
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69 return 0
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70
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71 def _getdirchanges(svn, branchpath, parentctx, ctx, changedfiles):
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72 """Compute directories to add or delete when moving from parentctx
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73 to ctx, assuming only 'changedfiles' files changed.
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74
83
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75 Return (added, deleted) where 'added' is the list of all added
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76 directories and 'deleted' the list of deleted directories.
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77 Intermediate directories are included: if a/b/c is new and requires
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78 the addition of a/b and a, those will be listed too. Intermediate
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79 deleted directories are also listed, but item order of undefined
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80 in either list.
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81 """
83
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82 def exists(svndir):
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83 try:
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84 svn.list_dir('%s/%s' % (branchpath, svndir))
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85 return True
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86 except core.SubversionException:
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87 return False
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88
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89 def finddirs(path):
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90 pos = path.rfind('/')
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91 while pos != -1:
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92 yield path[:pos]
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93 pos = path.rfind('/', 0, pos)
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94
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95 def getctxdirs(ctx, keptdirs):
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96 dirs = {}
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97 for f in ctx.manifest():
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98 for d in finddirs(f):
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99 if d in dirs:
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100 break
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101 if d in keptdirs:
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102 dirs[d] = 1
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103 return dirs
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104
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105 deleted, added = [], []
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106 changeddirs = {}
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107 for f in changedfiles:
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108 if f in parentctx and f in ctx:
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109 # Updated files cannot cause directories to be created
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110 # or removed.
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111 continue
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112 for d in finddirs(f):
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113 changeddirs[d] = 1
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114 if not changeddirs:
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115 return added, deleted
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116 olddirs = getctxdirs(parentctx, changeddirs)
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117 newdirs = getctxdirs(ctx, changeddirs)
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118
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119 for d in newdirs:
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120 if d not in olddirs and not exists(d):
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121 added.append(d)
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122
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123 for d in olddirs:
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124 if d not in newdirs and exists(d):
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125 deleted.append(d)
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126
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127 return added, deleted
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128
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129
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130 def commit_from_rev(ui, repo, rev_ctx, hg_editor, svn_url, base_revision):
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131 """Build and send a commit from Mercurial to Subversion.
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132 """
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133 file_data = {}
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134 svn = svnwrap.SubversionRepo(svn_url, username=merc_util.getuser())
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135 parent = rev_ctx.parents()[0]
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136 parent_branch = rev_ctx.parents()[0].branch()
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137 branch_path = 'trunk'
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138
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139 if parent_branch and parent_branch != 'default':
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140 branch_path = 'branches/%s' % parent_branch
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141
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142 addeddirs, deleteddirs = _getdirchanges(svn, branch_path, parent,
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143 rev_ctx, rev_ctx.files())
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144 deleteddirs = set(deleteddirs)
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145
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146 props = {}
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147 copies = {}
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148 for file in rev_ctx.files():
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149 new_data = base_data = ''
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150 action = ''
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151 if file in rev_ctx:
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152 fctx = rev_ctx.filectx(file)
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153 new_data = fctx.data()
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154
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155 if 'x' in fctx.flags():
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156 props.setdefault(file, {})['svn:executable'] = '*'
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157 if 'l' in fctx.flags():
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158 props.setdefault(file, {})['svn:special'] = '*'
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159
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160 if file not in parent:
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161 renamed = fctx.renamed()
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162 if renamed:
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163 # TODO current model (and perhaps svn model) does not support
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164 # this kind of renames: a -> b, b -> c
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165 copies[file] = renamed[0]
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166 base_data = parent[renamed[0]].data()
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167
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168 action = 'add'
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169 dirname = '/'.join(file.split('/')[:-1] + [''])
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170 else:
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171 base_data = parent.filectx(file).data()
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172 if ('x' in parent.filectx(file).flags()
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173 and 'x' not in rev_ctx.filectx(file).flags()):
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174 props.setdefault(file, {})['svn:executable'] = None
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175 if ('l' in parent.filectx(file).flags()
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176 and 'l' not in rev_ctx.filectx(file).flags()):
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177 props.setdefault(file, {})['svn:special'] = None
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178 action = 'modify'
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179 else:
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180 pos = file.rfind('/')
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181 if pos >= 0:
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182 if file[:pos] in deleteddirs:
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183 # This file will be removed when its directory is removed
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184 continue
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185 base_data = parent.filectx(file).data()
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186 action = 'delete'
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187 file_data[file] = base_data, new_data, action
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188
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189 # Now we are done with files, we can prune deleted directories
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190 # against themselves: ignore a/b if a/ is already removed
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191 deleteddirs2 = list(deleteddirs)
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192 deleteddirs2.sort()
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193 deleteddirs2.reverse()
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194 for d in deleteddirs2:
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195 pos = d.rfind('/')
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196 if pos >= 0 and d[:pos] in deleteddirs:
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197 deleteddirs.remove(d[:pos])
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198
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199 def svnpath(p):
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200 return '%s/%s' % (branch_path, p)
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201
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202 newcopies = {}
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203 for source, dest in copies.iteritems():
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204 newcopies[svnpath(source)] = (svnpath(dest), base_revision)
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205
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206 new_target_files = [svnpath(f) for f in file_data]
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207 for tf, ntf in zip(file_data, new_target_files):
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208 if tf in file_data:
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209 file_data[ntf] = file_data[tf]
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210 if tf in props:
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211 props[ntf] = props[tf]
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212 del props[tf]
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213 if merc_util.binary(file_data[ntf][1]):
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214 props.setdefault(ntf, {}).update(props.get(ntf, {}))
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215 props.setdefault(ntf, {})['svn:mime-type'] = 'application/octet-stream'
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216 del file_data[tf]
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217
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218 addeddirs = [svnpath(d) for d in addeddirs]
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219 deleteddirs = [svnpath(d) for d in deleteddirs]
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220 new_target_files += addeddirs + deleteddirs
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221 try:
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222 svn.commit(new_target_files, rev_ctx.description(), file_data,
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223 base_revision, set(addeddirs), set(deleteddirs),
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224 props, newcopies)
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225 except core.SubversionException, e:
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226 if hasattr(e, 'apr_err') and e.apr_err == 160028:
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227 raise merc_util.Abort('Base text was out of date, maybe rebase?')
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228 else:
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229 raise