Mercurial > hgsubversion

annotate push_cmd.py @ 120:f508c1fa19a5

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hg_delta_editor: do not assume branches are copied from trunk by default Here is what happen in jquery repository: - kelvin-dev branch is created in r1617 with an empty directory for the datePicker plugin - commits are done - datePicker plugin is merged in trunk Before the fix, the converter assumed the initial empty commit had for parent some other commit of trunk, therefore adding all its files, which was wrong. And we ended with 'alignDemo.html' in converted trunk@5946 while it was not in the source revision.
author Patrick Mezard <pmezard@gmail.com>
date Sat, 29 Nov 2008 11:25:01 -0600
parents 1da7aafdd323
children 58ae90a65f41
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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 # 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 stupid=stupid)
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48 assert not r or r == 0
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49 # 4. Find the new head of the target branch
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50 repo = hg.repository(ui, hge.path)
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51 base_c = repo[base_n]
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52 replacement = [c for c in base_c.children() if c not in old_children
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53 and c.branch() == old_ctx.branch()]
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54 assert len(replacement) == 1
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55 replacement = replacement[0]
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56 # 5. Rebase all children of the currently-pushing rev to the new branch
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57 heads = repo.heads(old_ctx.node())
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58 for needs_transplant in heads:
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59 hg.clean(repo, needs_transplant)
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60 utility_commands.rebase_commits(ui, repo, hg_repo_path, **opts)
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61 repo = hg.repository(ui, hge.path)
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62 if needs_transplant in outgoing:
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63 hg.clean(repo, repo['tip'].node())
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64 hge = hg_delta_editor.HgChangeReceiver(hg_repo_path, ui_=ui)
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65 svn_commit_hashes = dict(zip(hge.revmap.itervalues(),
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66 hge.revmap.iterkeys()))
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67 outgoing = util.outgoing_revisions(ui, repo, hge,
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68 svn_commit_hashes)
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69 merc_util._encoding = oldencoding
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70 return 0
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71
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72 def _getdirchanges(svn, branchpath, parentctx, ctx, changedfiles):
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73 """Compute directories to add or delete when moving from parentctx
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74 to ctx, assuming only 'changedfiles' files changed.
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75
83
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76 Return (added, deleted) where 'added' is the list of all added
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77 directories and 'deleted' the list of deleted directories.
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78 Intermediate directories are included: if a/b/c is new and requires
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79 the addition of a/b and a, those will be listed too. Intermediate
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80 deleted directories are also listed, but item order of undefined
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81 in either list.
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82 """
83
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83 def exists(svndir):
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84 try:
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85 svn.list_dir('%s/%s' % (branchpath, svndir))
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86 return True
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87 except core.SubversionException:
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88 return False
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89
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90 def finddirs(path):
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91 pos = path.rfind('/')
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92 while pos != -1:
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93 yield path[:pos]
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94 pos = path.rfind('/', 0, pos)
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95
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96 def getctxdirs(ctx, keptdirs):
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97 dirs = {}
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98 for f in ctx.manifest():
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99 for d in finddirs(f):
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100 if d in dirs:
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101 break
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102 if d in keptdirs:
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103 dirs[d] = 1
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104 return dirs
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105
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106 deleted, added = [], []
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107 changeddirs = {}
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108 for f in changedfiles:
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109 if f in parentctx and f in ctx:
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110 # Updated files cannot cause directories to be created
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111 # or removed.
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112 continue
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113 for d in finddirs(f):
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114 changeddirs[d] = 1
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115 if not changeddirs:
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116 return added, deleted
83
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117 olddirs = getctxdirs(parentctx, changeddirs)
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118 newdirs = getctxdirs(ctx, changeddirs)
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119
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120 for d in newdirs:
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121 if d not in olddirs and not exists(d):
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122 added.append(d)
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123
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124 for d in olddirs:
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125 if d not in newdirs and exists(d):
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126 deleted.append(d)
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127
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128 return added, deleted
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129
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130
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131 def commit_from_rev(ui, repo, rev_ctx, hg_editor, svn_url, base_revision):
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132 """Build and send a commit from Mercurial to Subversion.
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133 """
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134 file_data = {}
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135 svn = svnwrap.SubversionRepo(svn_url, username=merc_util.getuser())
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136 parent = rev_ctx.parents()[0]
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137 parent_branch = rev_ctx.parents()[0].branch()
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138 branch_path = 'trunk'
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139
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140 if parent_branch and parent_branch != 'default':
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141 branch_path = 'branches/%s' % parent_branch
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142
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143 addeddirs, deleteddirs = _getdirchanges(svn, branch_path, parent,
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144 rev_ctx, rev_ctx.files())
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145 deleteddirs = set(deleteddirs)
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146
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147 props = {}
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148 copies = {}
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149 for file in rev_ctx.files():
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150 new_data = base_data = ''
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151 action = ''
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152 if file in rev_ctx:
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153 fctx = rev_ctx.filectx(file)
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154 new_data = fctx.data()
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155
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156 if 'x' in fctx.flags():
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157 props.setdefault(file, {})['svn:executable'] = '*'
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158 if 'l' in fctx.flags():
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159 props.setdefault(file, {})['svn:special'] = '*'
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160
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161 if file not in parent:
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162 renamed = fctx.renamed()
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163 if renamed:
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164 # TODO current model (and perhaps svn model) does not support
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165 # this kind of renames: a -> b, b -> c
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166 copies[file] = renamed[0]
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167 base_data = parent[renamed[0]].data()
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168
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169 action = 'add'
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170 dirname = '/'.join(file.split('/')[:-1] + [''])
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171 else:
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172 base_data = parent.filectx(file).data()
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173 if ('x' in parent.filectx(file).flags()
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174 and 'x' not in rev_ctx.filectx(file).flags()):
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175 props.setdefault(file, {})['svn:executable'] = None
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176 if ('l' in parent.filectx(file).flags()
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177 and 'l' not in rev_ctx.filectx(file).flags()):
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178 props.setdefault(file, {})['svn:special'] = None
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179 action = 'modify'
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180 else:
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181 pos = file.rfind('/')
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182 if pos >= 0:
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183 if file[:pos] in deleteddirs:
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184 # This file will be removed when its directory is removed
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185 continue
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186 base_data = parent.filectx(file).data()
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187 action = 'delete'
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188 file_data[file] = base_data, new_data, action
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189
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190 # Now we are done with files, we can prune deleted directories
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191 # against themselves: ignore a/b if a/ is already removed
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192 deleteddirs2 = list(deleteddirs)
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193 deleteddirs2.sort()
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194 deleteddirs2.reverse()
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195 for d in deleteddirs2:
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196 pos = d.rfind('/')
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197 if pos >= 0 and d[:pos] in deleteddirs:
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198 deleteddirs.remove(d[:pos])
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199
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200 def svnpath(p):
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201 return '%s/%s' % (branch_path, p)
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202
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203 newcopies = {}
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204 for source, dest in copies.iteritems():
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205 newcopies[svnpath(source)] = (svnpath(dest), base_revision)
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206
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207 new_target_files = [svnpath(f) for f in file_data]
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208 for tf, ntf in zip(file_data, new_target_files):
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209 if tf in file_data:
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210 file_data[ntf] = file_data[tf]
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211 if tf in props:
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212 props[ntf] = props[tf]
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213 del props[tf]
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214 if merc_util.binary(file_data[ntf][1]):
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215 props.setdefault(ntf, {}).update(props.get(ntf, {}))
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216 props.setdefault(ntf, {})['svn:mime-type'] = 'application/octet-stream'
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217 del file_data[tf]
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218
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219 addeddirs = [svnpath(d) for d in addeddirs]
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220 deleteddirs = [svnpath(d) for d in deleteddirs]
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221 new_target_files += addeddirs + deleteddirs
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222 try:
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223 svn.commit(new_target_files, rev_ctx.description(), file_data,
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224 base_revision, set(addeddirs), set(deleteddirs),
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225 props, newcopies)
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226 except core.SubversionException, e:
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227 if hasattr(e, 'apr_err') and e.apr_err == 160028:
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228 raise merc_util.Abort('Base text was out of date, maybe rebase?')
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229 else:
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230 raise