| 1 | # -*- mode: python; coding: utf-8 -*- |
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| 2 | # :Progetto: vcpx -- Mercurial native backend |
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| 3 | # :Creato: dom 11 set 2005 22:58:38 CEST |
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| 4 | # :Autore: Lele Gaifax <lele@nautilus.homeip.net> |
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| 5 | # Brendan Cully <brendan@kublai.com> |
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| 6 | # :Licenza: GNU General Public License |
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| 7 | # |
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| 8 | |
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| 9 | """ |
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| 10 | This module implements the backends for Mercurial, using its native API |
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| 11 | instead of thru the command line. |
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| 12 | """ |
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| 13 | |
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| 14 | __docformat__ = 'reStructuredText' |
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| 15 | |
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| 16 | from mercurial import ui, hg, cmdutil, commands |
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| 17 | |
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| 18 | from vcpx.repository import Repository |
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| 19 | from vcpx.source import UpdatableSourceWorkingDir |
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| 20 | from vcpx.target import SynchronizableTargetWorkingDir |
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| 21 | |
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| 22 | |
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| 23 | class HgRepository(Repository): |
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| 24 | METADIR = '.hg' |
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| 25 | |
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| 26 | def _load(self, project): |
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| 27 | Repository._load(self, project) |
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| 28 | ppath = project.config.get(self.name, 'python-path') |
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| 29 | if ppath: |
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| 30 | from sys import path |
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| 31 | |
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| 32 | if ppath not in path: |
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| 33 | path.insert(0, ppath) |
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| 34 | self.EXTRA_METADIRS = ['.hgtags'] |
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| 35 | |
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| 36 | def _validateConfiguration(self): |
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| 37 | """ |
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| 38 | Mercurial expects all data to be in utf-8, so we disallow other encodings |
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| 39 | """ |
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| 40 | Repository._validateConfiguration(self) |
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| 41 | |
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| 42 | if self.encoding.upper() != 'UTF-8': |
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| 43 | self.log.warning("Forcing UTF-8 encoding instead of " + self.encoding) |
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| 44 | self.encoding = 'UTF-8' |
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| 45 | |
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| 46 | |
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| 47 | class HgWorkingDir(UpdatableSourceWorkingDir, SynchronizableTargetWorkingDir): |
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| 48 | # UpdatableSourceWorkingDir |
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| 49 | def _checkoutUpstreamRevision(self, revision): |
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| 50 | """ |
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| 51 | Initial checkout (hg clone) |
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| 52 | """ |
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| 53 | |
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| 54 | from os import mkdir, rename, rmdir |
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| 55 | from os.path import exists, join |
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| 56 | |
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| 57 | self._getUI() |
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| 58 | # We have to clone the entire repository to be able to pull from it |
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| 59 | # later. So a partial checkout is a full clone followed by an update |
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| 60 | # directly to the desired revision. |
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| 61 | |
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| 62 | # If the basedir does not exist, create it |
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| 63 | if not exists(self.repository.basedir): |
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| 64 | mkdir(self.repository.basedir) |
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| 65 | |
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| 66 | # clone it only if .hg does not exist |
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| 67 | if not exists(join(self.repository.basedir, ".hg")): |
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| 68 | # Hg won't check out into an existing directory |
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| 69 | checkoutdir = join(self.repository.basedir,".hgtmp") |
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| 70 | opts = self._defaultOpts('clone') |
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| 71 | opts['noupdate'] = True |
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| 72 | commands.clone(self._ui, self.repository.repository, checkoutdir, |
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| 73 | **opts) |
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| 74 | rename(join(checkoutdir, ".hg"), join(self.repository.basedir,".hg")) |
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| 75 | rmdir(checkoutdir) |
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| 76 | else: |
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| 77 | # Does hgrc exist? If not, we write one |
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| 78 | hgrc = join(self.repository.basedir, ".hg", "hgrc") |
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| 79 | if not exists(hgrc): |
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| 80 | hgrc = file(hgrc, "w") |
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| 81 | hgrc.write("[paths]\ndefault = %s\ndefault-push = %s\n" % |
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| 82 | (self.repository.repository, |
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| 83 | self.repository.repository)) |
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| 84 | hgrc.close() |
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| 85 | |
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| 86 | repo = self._getRepo() |
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| 87 | node = self._getNode(repo, revision) |
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| 88 | |
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| 89 | self.log.info('Extracting revision %r from %r into %r', |
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| 90 | revision, self.repository.repository, self.repository.basedir) |
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| 91 | repo.update(node) |
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| 92 | |
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| 93 | return self._changesetForRevision(repo, revision) |
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| 94 | |
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| 95 | def _getUpstreamChangesets(self, sincerev): |
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| 96 | """Fetch new changesets from the source""" |
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| 97 | repo = self._getRepo() |
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| 98 | |
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| 99 | self._hgCommand('pull', 'default') |
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| 100 | |
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| 101 | from mercurial.node import bin |
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| 102 | for rev in xrange(repo.changelog.rev(bin(sincerev)) + 1, |
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| 103 | repo.changelog.count()): |
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| 104 | yield self._changesetForRevision(repo, str(rev)) |
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| 105 | |
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| 106 | def _applyChangeset(self, changeset): |
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| 107 | repo = self._getRepo() |
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| 108 | node = self._getNode(repo, changeset.revision) |
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| 109 | |
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| 110 | self.log.info('Updating to %r', changeset.revision) |
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| 111 | res = repo.update(node) |
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| 112 | |
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| 113 | # The following code is for backward compatibility: hg 0.9.5 |
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| 114 | # raises an Abort exception instead of just returning a status; |
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| 115 | # but under 0.9.5 we reimplanted hg.clean() into repo.update(): |
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| 116 | # hg.clean() performs a clobbering clean merge and thus does |
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| 117 | # not stop on that situation. |
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| 118 | if res: |
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| 119 | # Files in to-be-merged changesets not on the trunk will |
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| 120 | # cause a merge error on update. If no files are modified, |
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| 121 | # added, removed, or deleted, do update -C |
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| 122 | modified, added, removed, deleted = repo.changes()[0:4] |
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| 123 | conflicting = modified + added + removed + deleted |
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| 124 | if conflicting: |
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| 125 | return conflicting |
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| 126 | return repo.update(node, force=True) |
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| 127 | |
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| 128 | def _changesetForRevision(self, repo, revision): |
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| 129 | from datetime import datetime |
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| 130 | from vcpx.changes import Changeset, ChangesetEntry |
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| 131 | from vcpx.tzinfo import FixedOffset |
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| 132 | |
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| 133 | entries = [] |
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| 134 | node = self._getNode(repo, revision) |
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| 135 | parents = repo.changelog.parents(node) |
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| 136 | nodecontent = repo.changelog.read(node) |
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| 137 | # hg 0.9.5+ returns a tuple of six elements, last seems useless for us |
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| 138 | (manifest, user, date, files, message) = nodecontent[:5] |
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| 139 | |
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| 140 | dt, tz = date |
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| 141 | date = datetime.fromtimestamp(dt, FixedOffset(-tz/60)) # note the minus sign! |
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| 142 | |
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| 143 | manifest = repo.manifest.read(manifest) |
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| 144 | |
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| 145 | # To find adds, we get the manifests of any parents. If a file doesn't |
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| 146 | # occur there, it's new. |
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| 147 | pms = {} |
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| 148 | for parent in repo.changelog.parents(node): |
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| 149 | pms.update(repo.manifest.read(repo.changelog.read(parent)[0])) |
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| 150 | |
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| 151 | # if files contains only '.hgtags', this is probably a tag cset. |
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| 152 | # Tailor appears to only support tagging the current version, so only |
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| 153 | # pass on tags that are for the immediate parents of the current node |
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| 154 | tags = None |
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| 155 | if files == ['.hgtags']: |
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| 156 | tags = [tag for (tag, tagnode) in repo.tags().iteritems() |
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| 157 | if tagnode in parents] |
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| 158 | |
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| 159 | # Don't include the file itself in the changeset. It's only useful |
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| 160 | # to mercurial, and if we do end up making a tailor round trip |
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| 161 | # the nodes will be wrong anyway. |
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| 162 | if '.hgtags' in files: |
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| 163 | files.remove('.hgtags') |
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| 164 | if pms.has_key('.hgtags'): |
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| 165 | del pms['.hgtags'] |
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| 166 | |
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| 167 | for f in files: |
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| 168 | e = ChangesetEntry(f) |
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| 169 | # find renames |
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| 170 | fl = repo.file(f) |
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| 171 | oldname = f in manifest and fl.renamed(manifest[f]) |
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| 172 | if oldname: |
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| 173 | e.action_kind = ChangesetEntry.RENAMED |
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| 174 | e.old_name = oldname[0] |
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| 175 | # hg copy can copy the same file to multiple destinations |
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| 176 | # Currently this is handled as multiple renames. It would |
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| 177 | # probably be better to have ChangesetEntry.COPIED. |
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| 178 | if pms.has_key(oldname[0]): |
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| 179 | pms.pop(oldname[0]) |
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| 180 | else: |
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| 181 | if pms.has_key(f): |
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| 182 | e.action_kind = ChangesetEntry.UPDATED |
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| 183 | else: |
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| 184 | e.action_kind = ChangesetEntry.ADDED |
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| 185 | |
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| 186 | entries.append(e) |
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| 187 | |
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| 188 | for df in [file for file in pms.iterkeys() |
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| 189 | if not manifest.has_key(file)]: |
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| 190 | e = ChangesetEntry(df) |
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| 191 | e.action_kind = ChangesetEntry.DELETED |
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| 192 | entries.append(e) |
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| 193 | |
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| 194 | from mercurial.node import hex |
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| 195 | revision = hex(node) |
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| 196 | return Changeset(revision, date, user, message, entries, tags=tags) |
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| 197 | |
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| 198 | def _getUI(self): |
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| 199 | try: |
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| 200 | return self._ui |
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| 201 | except AttributeError: |
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| 202 | project = self.repository.projectref() |
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| 203 | self._ui = ui.ui(project.verbose, |
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| 204 | project.config.get(self.repository.name, |
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| 205 | 'debug', False), |
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| 206 | not project.verbose, False) |
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| 207 | return self._ui |
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| 208 | |
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| 209 | def _getRepo(self): |
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| 210 | try: |
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| 211 | return self._hg |
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| 212 | except AttributeError: |
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| 213 | # dirstate walker uses simple string comparison between |
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| 214 | # repo root and os.getcwd, so root should be canonified. |
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| 215 | from os.path import realpath |
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| 216 | |
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| 217 | ui = self._getUI() |
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| 218 | self._hg = hg.repository(ui=ui, path=realpath(self.repository.basedir), |
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| 219 | create=False) |
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| 220 | # Pick up repository-specific UI settings. |
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| 221 | self._ui = self._hg.ui |
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| 222 | |
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| 223 | # 0.9.5 repos does not have update()... |
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| 224 | if not hasattr(self._hg, 'update'): |
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| 225 | # Use clean(), to force a clean merge clobbering local changes |
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| 226 | self._hg.update = lambda n: hg.clean(self._hg, n) |
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| 227 | |
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| 228 | return self._hg |
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| 229 | |
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| 230 | def _getNode(self, repo, revision): |
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| 231 | """Convert a tailor revision ID into an hg node""" |
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| 232 | if revision == "HEAD": |
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| 233 | node = repo.changelog.tip() |
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| 234 | else: |
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| 235 | if revision == "INITIAL": |
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| 236 | rev = "0" |
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| 237 | else: |
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| 238 | rev = revision |
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| 239 | node = repo.changelog.lookup(rev) |
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| 240 | |
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| 241 | return node |
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| 242 | |
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| 243 | def _normalizeEntryPaths(self, entry): |
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| 244 | """ |
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| 245 | Normalize the name and old_name of an entry. |
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| 246 | |
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| 247 | This implementation uses ``mercurial.util.normpath()``, since |
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| 248 | at this level hg is expecting UNIX style pathnames, with |
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| 249 | forward slash"/" as separator, also under insane operating systems. |
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| 250 | """ |
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| 251 | |
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| 252 | from mercurial.util import normpath |
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| 253 | |
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| 254 | entry.name = normpath(self.repository.encode(entry.name)) |
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| 255 | if entry.old_name: |
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| 256 | entry.old_name = normpath(self.repository.encode(entry.old_name)) |
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| 257 | |
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| 258 | def _removeDirs(self, names): |
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| 259 | from os.path import isdir, join, normpath |
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| 260 | """Remove the names that reference a directory.""" |
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| 261 | return [n for n in names |
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| 262 | if not isdir(join(self.repository.basedir, normpath(n)))] |
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| 263 | return notdirs |
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| 264 | |
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| 265 | def _addPathnames(self, names): |
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| 266 | from os.path import join |
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| 267 | |
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| 268 | notdirs = self._removeDirs(names) |
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| 269 | if notdirs: |
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| 270 | self.log.info('Adding %s...', ', '.join(notdirs)) |
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| 271 | self._hg.add(notdirs) |
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| 272 | |
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| 273 | def _commit(self, date, author, patchname, changelog=None, names=[], |
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| 274 | tags = [], isinitialcommit = False): |
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| 275 | from calendar import timegm # like mktime(), but returns UTC timestamp |
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| 276 | from os.path import exists, join, normpath |
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| 277 | |
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| 278 | encode = self.repository.encode |
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| 279 | |
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| 280 | logmessage = [] |
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| 281 | if patchname: |
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| 282 | logmessage.append(patchname) |
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| 283 | if changelog: |
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| 284 | logmessage.append(changelog) |
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| 285 | if logmessage: |
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| 286 | self.log.info('Committing %r...', logmessage[0]) |
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| 287 | logmessage = encode('\n'.join(logmessage)) |
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| 288 | else: |
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| 289 | self.log.info('Committing...') |
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| 290 | logmessage = "Empty changelog" |
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| 291 | |
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| 292 | timestamp = timegm(date.utctimetuple()) |
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| 293 | timezone = date.utcoffset().seconds + date.utcoffset().days * 24 * 3600 |
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| 294 | |
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| 295 | opts = {} |
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| 296 | opts['message'] = logmessage |
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| 297 | opts['user'] = encode(author) |
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| 298 | opts['date'] = '%d %d' % (timestamp, -timezone) # note the minus sign! |
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| 299 | notdirs = self._removeDirs(names) |
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| 300 | if (not isinitialcommit) and len(notdirs) == 0 and \ |
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| 301 | (tags is None or len(tags) == 0): |
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| 302 | # Empty changeset; make sure we still see it |
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| 303 | empty = open(join(self.repository.basedir, '.hgempty'), 'a') |
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| 304 | empty.write("\nEmpty original changeset by %s:\n" % author) |
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| 305 | empty.write(logmessage + "\n") |
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| 306 | empty.close() |
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| 307 | self._hg.add(['.hgempty']) |
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| 308 | self._hgCommand('commit', **opts) |
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| 309 | |
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| 310 | def _tag(self, tag, date, author): |
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| 311 | """ Tag the tip with a given identifier """ |
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| 312 | # TODO: keep a handle on the changeset holding this tag? Then |
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| 313 | # we can extract author, log, date from it. |
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| 314 | |
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| 315 | # This seems gross. I don't get why I'm getting a unicode tag when |
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| 316 | # it's just ascii underneath. Something weird is happening in CVS. |
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| 317 | tag = self.repository.encode(tag) |
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| 318 | |
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| 319 | # CVS can't tell when a tag was applied so it tends to pass around |
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| 320 | # too many. We want to support retagging so we can't just ignore |
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| 321 | # duplicates. But we can safely ignore a tag if it is contained |
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| 322 | # in the commit history from tip back to the last non-tag commit. |
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| 323 | repo = self._getRepo() |
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| 324 | tagnodes = repo.tags().values() |
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| 325 | try: |
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| 326 | tagnode = repo.tags()[tag] |
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| 327 | # tag commit can't be merge, right? |
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| 328 | parent = repo.changelog.parents(repo.changelog.tip())[0] |
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| 329 | while parent in tagnodes: |
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| 330 | if tagnode == parent: |
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| 331 | return |
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| 332 | parent = repo.changelog.parents(parent)[0] |
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| 333 | except KeyError: |
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| 334 | pass |
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| 335 | self._hgCommand('tag', tag) |
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| 336 | |
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| 337 | def _defaultOpts(self, cmd): |
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| 338 | # Not sure this is public. commands.parse might be, but this |
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| 339 | # is easier, and while dispatch is easiest, you lose ui. |
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| 340 | # findxxx() is not public, and to make that clear, hg folks |
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| 341 | # keep moving the function around... |
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| 342 | if hasattr(cmdutil, 'findcmd'): # >= 0.9.4 |
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| 343 | if cmdutil.findcmd.func_code.co_argcount == 2: # 0.9.4 |
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| 344 | def findcmd(cmd): |
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| 345 | return cmdutil.findcmd(self._getUI(), cmd) |
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| 346 | elif cmdutil.findcmd.func_code.co_argcount == 3: # 0.9.5 |
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| 347 | def findcmd(cmd): |
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| 348 | return cmdutil.findcmd(self._getUI(), cmd, commands.table) |
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| 349 | elif hasattr(commands, 'findcmd'): # < 0.9.4 |
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| 350 | if commands.findcmd.func_code.co_argcount == 1: |
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| 351 | findcmd = commands.findcmd |
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| 352 | else: |
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| 353 | def findcmd(cmd): |
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| 354 | return commands.findcmd(self._getUI(), cmd) |
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| 355 | elif hasattr(commands, 'find'): # ancient hg |
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| 356 | findcmd = commands.find |
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| 357 | else: |
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| 358 | raise RuntimeError("unable to locate mercurial's 'findcmd()'") |
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| 359 | return dict([(f[1].replace('-', '_'), f[2]) for f in findcmd(cmd)[1][1]]) |
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| 360 | |
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| 361 | def _hgCommand(self, cmd, *args, **opts): |
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| 362 | import os |
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| 363 | |
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| 364 | allopts = self._defaultOpts(cmd) |
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| 365 | allopts.update(opts) |
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| 366 | cmd = getattr(commands, cmd) |
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| 367 | cwd = os.getcwd() |
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| 368 | os.chdir(self.repository.basedir) |
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| 369 | try: |
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| 370 | cmd(self._ui, self._hg, *args, **allopts) |
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| 371 | finally: |
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| 372 | os.chdir(cwd) |
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| 373 | |
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| 374 | def _removePathnames(self, names): |
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| 375 | """Remove a sequence of entries""" |
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| 376 | |
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| 377 | from os.path import join |
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| 378 | |
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| 379 | repo = self._getRepo() |
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| 380 | |
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| 381 | self.log.info('Removing %s...', ', '.join(names)) |
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| 382 | for name in names: |
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| 383 | files = self._walk(name) |
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| 384 | # We can't use isdir because the source has already |
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| 385 | # removed the entry, so we do a dirstate lookup. |
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| 386 | if files: |
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| 387 | for f in self._walk(name): |
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| 388 | repo.remove([join(name, f)], unlink=True) |
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| 389 | else: |
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| 390 | repo.remove([name], unlink=True) |
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| 391 | |
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| 392 | def _renamePathname(self, oldname, newname): |
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| 393 | """Rename an entry""" |
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| 394 | |
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| 395 | from os.path import join, isdir, normpath |
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| 396 | |
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| 397 | repo = self._getRepo() |
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| 398 | |
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| 399 | self.log.info('Renaming %r to %r...', oldname, newname) |
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| 400 | # Check both names, because maybe we are operating in |
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| 401 | # disjunct dirs, and the target may be renamed to a |
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| 402 | # temporary name |
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| 403 | if (isdir(join(self.repository.basedir, normpath(oldname))) |
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| 404 | or isdir(join(self.repository.basedir, normpath(newname)))): |
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| 405 | # Given lack of support for directories in current HG, |
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| 406 | # loop over all files under the old directory and |
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| 407 | # do a copy on them. |
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| 408 | for f in self._walk(oldname): |
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| 409 | oldpath = join(oldname, f) |
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| 410 | repo.copy(oldpath, join(newname, f)) |
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| 411 | repo.remove([oldpath], unlink=True) |
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| 412 | else: |
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| 413 | repo.copy(oldname, newname) |
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| 414 | repo.remove([oldname], unlink=True) |
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| 415 | |
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| 416 | def _prepareTargetRepository(self): |
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| 417 | """ |
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| 418 | Create the base directory if it doesn't exist, and the |
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| 419 | repository as well in the new working directory. |
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| 420 | """ |
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| 421 | |
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| 422 | from os.path import join, exists, realpath |
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| 423 | |
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| 424 | self._getUI() |
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| 425 | |
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| 426 | if exists(join(self.repository.basedir, self.repository.METADIR)): |
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| 427 | create = 0 |
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| 428 | else: |
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| 429 | create = 1 |
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| 430 | self.log.info('Initializing new repository in %r...', self.repository.basedir) |
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| 431 | self._hg = hg.repository(ui=self._ui, path=realpath(self.repository.basedir), |
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| 432 | create=create) |
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| 433 | |
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| 434 | def _prepareWorkingDirectory(self, source_repo): |
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| 435 | """ |
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| 436 | Create the .hgignore. |
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| 437 | """ |
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| 438 | |
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| 439 | from os.path import join |
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| 440 | from re import escape |
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| 441 | from vcpx.dualwd import IGNORED_METADIRS |
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| 442 | |
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| 443 | # Create the .hgignore file, that contains a regexp per line |
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| 444 | # with all known VCs metadirs to be skipped. |
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| 445 | ignore = open(join(self.repository.basedir, '.hgignore'), 'w') |
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| 446 | ignore.write('\n'.join(['(^|/)%s($|/)' % escape(md) |
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| 447 | for md in IGNORED_METADIRS])) |
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| 448 | ignore.write('\n') |
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| 449 | if self.logfile.startswith(self.repository.basedir): |
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| 450 | ignore.write('^') |
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| 451 | ignore.write(self.logfile[len(self.repository.basedir)+1:]) |
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| 452 | ignore.write('$\n') |
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| 453 | if self.state_file.filename.startswith(self.repository.basedir): |
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| 454 | sfrelname = self.state_file.filename[len(self.repository.basedir)+1:] |
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| 455 | ignore.write('^') |
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| 456 | ignore.write(sfrelname) |
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| 457 | ignore.write('$\n') |
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| 458 | ignore.write('^') |
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| 459 | ignore.write(sfrelname+'.old') |
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| 460 | ignore.write('$\n') |
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| 461 | ignore.write('^') |
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| 462 | ignore.write(sfrelname+'.journal') |
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| 463 | ignore.write('$\n') |
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| 464 | ignore.close() |
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| 465 | self._hg.add(['.hgignore']) |
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| 466 | self._hgCommand('commit', '.hgignore', |
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| 467 | message = 'Tailor preparing to convert repo by adding .hgignore') |
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| 468 | |
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| 469 | def _initializeWorkingDir(self): |
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| 470 | self._hgCommand('add') |
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| 471 | |
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| 472 | def _walk(self, subdir): |
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| 473 | """ |
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| 474 | Returns the files mercurial knows about under subdir, relative |
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| 475 | to subdir. |
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| 476 | """ |
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| 477 | from os.path import join, split |
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| 478 | |
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| 479 | files = [] |
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| 480 | for src, path in self._getRepo().dirstate.walk([subdir]): |
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| 481 | # If subdir is a plain file, just return |
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| 482 | if path == subdir: |
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| 483 | return None |
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| 484 | (hd, tl) = split(path) |
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| 485 | while hd != subdir and hd != '': |
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| 486 | hd, nt = split(hd) |
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| 487 | tl = join(nt, tl) |
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| 488 | files.append(tl) |
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| 489 | return files |
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