Mercurial > hg > mercurial-crew-with-dirclash
annotate hgext/convert/transport.py @ 5192:33015dac5df5
convert: fix mercurial_sink.putcommit
Changeset 4ebc8693ce72 added some code to putcommit to avoid creating a
revision that touches no files, but this can break regular conversions
from some repositories:
- conceptually, since we're converting a repo, we should try to make
the new hg repo as similar as possible to the original repo - we
should create a new changeset, even if the original revision didn't
touch any files (maybe the commit message had some important bit);
- even if a "regular" revision that doesn't touch any file may seem
weird (and maybe even broken), it's completely legitimate for a merge
revision to not touch any file, and, if we just skip it, the
converted repo will end up with wrong history and possibly an extra
head.
As an example, say the crew and main hg repos are sync'ed. Somebody
sends an important patch to the mailing list. Matt quickly applies
and pushes it. But at the same time somebody also applies it to crew
and pushes it. Suppose the commit message ended up being a bit
different (say, there was a typo and somebody didn't fix it) or that
the date ended up being different (because of different patch-applying
scripts): the changeset hashes will be different, but the manifests
will be the same.
Since both changesets were pushed to public repos, it's hard to recall
them. If both are merged, the manifest from the resulting merge
revision will have the exact same contents as its parents - i.e. the
merge revision really doesn't touch any file at all.
To keep the file filtering stuff "working", the generic code was changed
to skip empty revisions if we're filtering the repo, fixing a bug in the
process (we want parents[0] instead of tip).
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
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date | Fri, 17 Aug 2007 20:18:05 -0300 |
parents | 792c1d979097 |
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rev | line source |
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1 # -*- coding: utf-8 -*- |
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2 |
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3 # Copyright (C) 2007 Daniel Holth <dholth@fastmail.fm> |
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4 # This is a stripped-down version of the original bzr-svn transport.py, |
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5 # Copyright (C) 2006 Jelmer Vernooij <jelmer@samba.org> |
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6 |
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7 # This program is free software; you can redistribute it and/or modify |
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8 # it under the terms of the GNU General Public License as published by |
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9 # the Free Software Foundation; either version 2 of the License, or |
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10 # (at your option) any later version. |
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11 |
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12 # This program is distributed in the hope that it will be useful, |
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 # GNU General Public License for more details. |
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16 |
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17 # You should have received a copy of the GNU General Public License |
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18 # along with this program; if not, write to the Free Software |
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19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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20 |
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21 from cStringIO import StringIO |
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22 import os |
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23 from tempfile import mktemp |
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24 |
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25 from svn.core import SubversionException, Pool |
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26 import svn.ra |
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27 import svn.client |
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28 import svn.core |
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29 |
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30 # Some older versions of the Python bindings need to be |
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31 # explicitly initialized. But what we want to do probably |
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32 # won't work worth a darn against those libraries anyway! |
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33 svn.ra.initialize() |
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34 |
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35 svn_config = svn.core.svn_config_get_config(None) |
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36 |
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37 |
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38 def _create_auth_baton(pool): |
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39 """Create a Subversion authentication baton. """ |
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40 import svn.client |
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41 # Give the client context baton a suite of authentication |
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42 # providers.h |
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43 providers = [ |
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44 svn.client.get_simple_provider(pool), |
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45 svn.client.get_username_provider(pool), |
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46 svn.client.get_ssl_client_cert_file_provider(pool), |
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47 svn.client.get_ssl_client_cert_pw_file_provider(pool), |
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48 svn.client.get_ssl_server_trust_file_provider(pool), |
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49 ] |
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50 # Platform-dependant authentication methods |
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51 if hasattr(svn.client, 'get_windows_simple_provider'): |
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52 providers.append(svn.client.get_windows_simple_provider(pool)) |
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53 |
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54 return svn.core.svn_auth_open(providers, pool) |
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55 |
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56 class NotBranchError(SubversionException): |
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57 pass |
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58 |
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59 class SvnRaTransport(object): |
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60 """ |
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61 Open an ra connection to a Subversion repository. |
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62 """ |
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63 def __init__(self, url="", ra=None): |
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64 self.pool = Pool() |
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65 self.svn_url = url |
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66 self.username = '' |
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67 self.password = '' |
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68 |
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69 # Only Subversion 1.4 has reparent() |
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70 if ra is None or not hasattr(svn.ra, 'reparent'): |
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71 self.client = svn.client.create_context(self.pool) |
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72 ab = _create_auth_baton(self.pool) |
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73 if False: |
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74 svn.core.svn_auth_set_parameter( |
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75 ab, svn.core.SVN_AUTH_PARAM_DEFAULT_USERNAME, self.username) |
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76 svn.core.svn_auth_set_parameter( |
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77 ab, svn.core.SVN_AUTH_PARAM_DEFAULT_PASSWORD, self.password) |
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78 self.client.auth_baton = ab |
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79 self.client.config = svn_config |
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80 try: |
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81 self.ra = svn.client.open_ra_session( |
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82 self.svn_url.encode('utf8'), |
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83 self.client, self.pool) |
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84 except SubversionException, (inst, num): |
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85 if num in (svn.core.SVN_ERR_RA_ILLEGAL_URL, |
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86 svn.core.SVN_ERR_RA_LOCAL_REPOS_OPEN_FAILED, |
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87 svn.core.SVN_ERR_BAD_URL): |
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88 raise NotBranchError(url) |
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89 raise |
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90 else: |
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91 self.ra = ra |
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92 svn.ra.reparent(self.ra, self.svn_url.encode('utf8')) |
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93 |
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94 class Reporter: |
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95 def __init__(self, (reporter, report_baton)): |
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96 self._reporter = reporter |
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97 self._baton = report_baton |
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98 |
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99 def set_path(self, path, revnum, start_empty, lock_token, pool=None): |
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100 svn.ra.reporter2_invoke_set_path(self._reporter, self._baton, |
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101 path, revnum, start_empty, lock_token, pool) |
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102 |
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103 def delete_path(self, path, pool=None): |
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104 svn.ra.reporter2_invoke_delete_path(self._reporter, self._baton, |
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105 path, pool) |
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106 |
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107 def link_path(self, path, url, revision, start_empty, lock_token, |
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108 pool=None): |
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109 svn.ra.reporter2_invoke_link_path(self._reporter, self._baton, |
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110 path, url, revision, start_empty, lock_token, |
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111 pool) |
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112 |
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113 def finish_report(self, pool=None): |
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114 svn.ra.reporter2_invoke_finish_report(self._reporter, |
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115 self._baton, pool) |
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116 |
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117 def abort_report(self, pool=None): |
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118 svn.ra.reporter2_invoke_abort_report(self._reporter, |
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119 self._baton, pool) |
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120 |
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121 def do_update(self, revnum, path, *args, **kwargs): |
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122 return self.Reporter(svn.ra.do_update(self.ra, revnum, path, *args, **kwargs)) |
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123 |
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124 def clone(self, offset=None): |
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125 """See Transport.clone().""" |
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126 if offset is None: |
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127 return self.__class__(self.base) |
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128 |
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129 return SvnRaTransport(urlutils.join(self.base, offset), ra=self.ra) |