Mercurial > hgsubversion

annotate push_cmd.py @ 2:89f88df794d3

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Cleanup to 80 columns and add a couple of notes on basic use.
author Augie Fackler <durin42@gmail.com>
date Tue, 30 Sep 2008 18:01:35 -0500
parents f2636cfed115
children 1a5bb173170b
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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 #assert False # safety while the command is partially implemented.
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18 hge = hg_delta_editor.HgChangeReceiver(hg_repo_path,
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19 ui_=ui)
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20 svn_commit_hashes = dict(zip(hge.revmap.itervalues(),
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21 hge.revmap.iterkeys()))
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22 # Strategy:
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23 # 1. Find all outgoing commits from this head
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24 outgoing = utility_commands.outgoing_revisions(ui, repo, hge,
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25 svn_commit_hashes)
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26 if not (outgoing and len(outgoing)):
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27 ui.status('No revisions to push.')
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28 return 0
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29 if len(repo.parents()) != 1:
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30 ui.status('Cowardly refusing to push branch merge')
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31 return 1
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32 while outgoing:
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33 oldest = outgoing.pop(-1)
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34 old_ctx = repo[oldest]
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35 if len(old_ctx.parents()) != 1:
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36 ui.status('Found a branch merge, this needs discussion and '
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37 'implementation.')
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38 return 1
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39 base_n = old_ctx.parents()[0].node()
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40 old_children = repo[base_n].children()
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41 # 2. Commit oldest revision that needs to be pushed
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42 base_revision = svn_commit_hashes[old_ctx.parents()[0].node()][0]
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43 commit_from_rev(ui, repo, old_ctx, hge, svn_url, base_revision)
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44 # 3. Fetch revisions from svn
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45 r = fetch_command.fetch_revisions(ui, svn_url, hg_repo_path)
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46 assert not r or r == 0
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47 # 4. Find the new head of the target branch
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48 repo = hg.repository(ui, hge.path)
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49 base_c = repo[base_n]
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50 replacement = [c for c in base_c.children() if c not in old_children
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51 and c.branch() == old_ctx.branch()]
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52 assert len(replacement) == 1
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53 replacement = replacement[0]
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54 # 5. Rebase all children of the currently-pushing rev to the new branch
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55 heads = repo.heads(old_ctx.node())
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56 for needs_transplant in heads:
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57 hg.clean(repo, needs_transplant)
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58 utility_commands.rebase_commits(ui, repo, hg_repo_path, **opts)
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59 repo = hg.repository(ui, hge.path)
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60 if needs_transplant in outgoing:
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61 hg.clean(repo, repo['tip'].node())
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62 hge = hg_delta_editor.HgChangeReceiver(hg_repo_path, ui_=ui)
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63 svn_commit_hashes = dict(zip(hge.revmap.itervalues(),
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64 hge.revmap.iterkeys()))
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65 outgoing = utility_commands.outgoing_revisions(ui, repo, hge,
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66 svn_commit_hashes)
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67 return 0
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68
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69
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70 def commit_from_rev(ui, repo, rev_ctx, hg_editor, svn_url, base_revision):
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71 """Build and send a commit from Mercurial to Subversion.
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72 """
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73 target_files = []
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74 file_data = {}
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75 for file in rev_ctx.files():
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76 parent = rev_ctx.parents()[0]
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77 new_data = base_data = ''
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78 action = ''
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79 if file in rev_ctx:
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80 new_data = rev_ctx.filectx(file).data()
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81 if file not in parent:
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82 target_files.append(file)
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83 action = 'add'
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84 # TODO check for mime-type autoprops here
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85 # TODO check for directory adds here
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86 else:
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87 target_files.append(file)
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88 base_data = parent.filectx(file).data()
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89 action = 'modify'
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90 else:
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91 target_files.append(file)
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92 base_data = parent.filectx(file).data()
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93 action = 'delete'
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94 file_data[file] = base_data, new_data, action
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95
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96 # TODO check for directory deletes here
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97 svn = svnwrap.SubversionRepo(svn_url)
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98 parent_branch = rev_ctx.parents()[0].branch()
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99 branch_path = 'trunk'
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100 if parent_branch and parent_branch != 'default':
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101 branch_path = 'branches/%s' % parent_branch
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102 new_target_files = ['%s/%s' % (branch_path, f) for f in target_files]
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103 for tf, ntf in zip(target_files, new_target_files):
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104 if tf in file_data:
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105 file_data[ntf] = file_data[tf]
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106 del file_data[tf]
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107 try:
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108 svn.commit(new_target_files, rev_ctx.description(), file_data,
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109 base_revision, set([]))
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110 except core.SubversionException, e:
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111 if hasattr(e, 'apr_err') and e.apr_err == 160028:
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112 raise merc_util.Abort('Base text was out of date, maybe rebase?')
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113 else:
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114 raise