Mercurial > hg
view hgext/bookmarks.py @ 7758:e81e6c996e99
extdiff: add --change option to display single changeset diff
This is the counterpart for extdiff of 9c6ae2e09e11.
author | Gilles Moris <gilles.moris@free.fr> |
---|---|
date | Sat, 07 Feb 2009 19:41:05 +0100 |
parents | 2ad81e9b075b |
children | e8d62d6133c2 |
line wrap: on
line source
# Mercurial extension to provide the 'hg bookmark' command # # Copyright 2008 David Soria Parra <dsp@php.net> # # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference. '''mercurial bookmarks Mercurial bookmarks are local moveable pointers to changesets. Every bookmark points to a changeset identified by its hash. If you commit a changeset that is based on a changeset that has a bookmark on it, the bookmark is forwarded to the new changeset. It is possible to use bookmark names in every revision lookup (e.g. hg merge, hg update). The bookmark extension offers the possiblity to have a more git-like experience by adding the following configuration option to your .hgrc: [bookmarks] track.current = True This will cause bookmarks to track the bookmark that you are currently on, and just updates it. This is similar to git's approach of branching. ''' from mercurial.i18n import _ from mercurial.node import nullid, nullrev, hex, short from mercurial import util, commands, localrepo, repair, extensions import os def parse(repo): '''Parse .hg/bookmarks file and return a dictionary Bookmarks are stored as {HASH}\s{NAME}\n (localtags format) values in the .hg/bookmarks file. They are read by the parse() method and returned as a dictionary with name => hash values. The parsed dictionary is cached until a write() operation is done. ''' try: if repo._bookmarks: return repo._bookmarks repo._bookmarks = {} for line in repo.opener('bookmarks'): sha, refspec = line.strip().split(' ', 1) repo._bookmarks[refspec] = repo.lookup(sha) except: pass return repo._bookmarks def write(repo, refs): '''Write bookmarks Write the given bookmark => hash dictionary to the .hg/bookmarks file in a format equal to those of localtags. We also store a backup of the previous state in undo.bookmarks that can be copied back on rollback. ''' if os.path.exists(repo.join('bookmarks')): util.copyfile(repo.join('bookmarks'), repo.join('undo.bookmarks')) if current(repo) not in refs: setcurrent(repo, None) file = repo.opener('bookmarks', 'w+') for refspec, node in refs.iteritems(): file.write("%s %s\n" % (hex(node), refspec)) file.close() def current(repo): '''Get the current bookmark If we use gittishsh branches we have a current bookmark that we are on. This function returns the name of the bookmark. It is stored in .hg/bookmarks.current ''' if repo._bookmarkcurrent: return repo._bookmarkcurrent mark = None if os.path.exists(repo.join('bookmarks.current')): file = repo.opener('bookmarks.current') # No readline() in posixfile_nt, reading everything is cheap mark = (file.readlines() or [''])[0] if mark == '': mark = None file.close() repo._bookmarkcurrent = mark return mark def setcurrent(repo, mark): '''Set the name of the bookmark that we are currently on Set the name of the bookmark that we are on (hg update <bookmark>). The name is recoreded in .hg/bookmarks.current ''' if current(repo) == mark: return refs = parse(repo) # do not update if we do update to a rev equal to the current bookmark if (mark not in refs and current(repo) and refs[current(repo)] == repo.changectx('.').node()): return if mark not in refs: mark = '' file = repo.opener('bookmarks.current', 'w+') file.write(mark) file.close() repo._bookmarkcurrent = mark def bookmark(ui, repo, mark=None, rev=None, force=False, delete=False, rename=None): '''mercurial bookmarks Bookmarks are pointers to certain commits that move when commiting. Bookmarks are local. They can be renamed, copied and deleted. It is possible to use bookmark names in 'hg merge' and 'hg update' to update to a given bookmark. You can use 'hg bookmark NAME' to set a bookmark on the current tip with the given name. If you specify a revision using -r REV (where REV may be an existing bookmark), the bookmark is set to that revision. ''' hexfn = ui.debugflag and hex or short marks = parse(repo) cur = repo.changectx('.').node() if rename: if rename not in marks: raise util.Abort(_("a bookmark of this name does not exist")) if mark in marks and not force: raise util.Abort(_("a bookmark of the same name already exists")) if mark is None: raise util.Abort(_("new bookmark name required")) marks[mark] = marks[rename] del marks[rename] if current(repo) == rename: setcurrent(repo, mark) write(repo, marks) return if delete: if mark == None: raise util.Abort(_("bookmark name required")) if mark not in marks: raise util.Abort(_("a bookmark of this name does not exist")) del marks[mark] write(repo, marks) return if mark != None: if "\n" in mark: raise util.Abort(_("bookmark name cannot contain newlines")) mark = mark.strip() if mark in marks and not force: raise util.Abort(_("a bookmark of the same name already exists")) if ((mark in repo.branchtags() or mark == repo.dirstate.branch()) and not force): raise util.Abort( _("a bookmark cannot have the name of an existing branch")) if rev: marks[mark] = repo.lookup(rev) else: marks[mark] = repo.changectx('.').node() write(repo, marks) return if mark == None: if rev: raise util.Abort(_("bookmark name required")) if len(marks) == 0: ui.status("no bookmarks set\n") else: for bmark, n in marks.iteritems(): if ui.configbool('bookmarks', 'track.current'): prefix = (bmark == current(repo) and n == cur) and '*' or ' ' else: prefix = (n == cur) and '*' or ' ' ui.write(" %s %-25s %d:%s\n" % ( prefix, bmark, repo.changelog.rev(n), hexfn(n))) return def _revstostrip(changelog, node): srev = changelog.rev(node) tostrip = [srev] saveheads = [] for r in xrange(srev, len(changelog)): parents = changelog.parentrevs(r) if parents[0] in tostrip or parents[1] in tostrip: tostrip.append(r) if parents[1] != nullrev: for p in parents: if p not in tostrip and p > srev: saveheads.append(p) return [r for r in tostrip if r not in saveheads] def strip(oldstrip, ui, repo, node, backup="all"): """Strip bookmarks if revisions are stripped using the mercurial.strip method. This usually happens during qpush and qpop""" revisions = _revstostrip(repo.changelog, node) marks = parse(repo) update = [] for mark, n in marks.iteritems(): if repo.changelog.rev(n) in revisions: update.append(mark) oldstrip(ui, repo, node, backup) if len(update) > 0: for m in update: marks[m] = repo.changectx('.').node() write(repo, marks) def reposetup(ui, repo): if not isinstance(repo, localrepo.localrepository): return # init a bookmark cache as otherwise we would get a infinite reading # in lookup() repo._bookmarks = None repo._bookmarkcurrent = None class bookmark_repo(repo.__class__): def rollback(self): if os.path.exists(self.join('undo.bookmarks')): util.rename(self.join('undo.bookmarks'), self.join('bookmarks')) return super(bookmark_repo, self).rollback() def lookup(self, key): if self._bookmarks is None: self._bookmarks = parse(self) if key in self._bookmarks: key = self._bookmarks[key] return super(bookmark_repo, self).lookup(key) def commit(self, *k, **kw): """Add a revision to the repository and move the bookmark""" node = super(bookmark_repo, self).commit(*k, **kw) if node == None: return None parents = repo.changelog.parents(node) if parents[1] == nullid: parents = (parents[0],) marks = parse(repo) update = False for mark, n in marks.items(): if ui.configbool('bookmarks', 'track.current'): if mark == current(repo) and n in parents: marks[mark] = node update = True else: if n in parents: marks[mark] = node update = True if update: write(repo, marks) return node def addchangegroup(self, source, srctype, url, emptyok=False): parents = repo.dirstate.parents() result = super(bookmark_repo, self).addchangegroup( source, srctype, url, emptyok) if result > 1: # We have more heads than before return result node = repo.changelog.tip() marks = parse(repo) update = False for mark, n in marks.items(): if n in parents: marks[mark] = node update = True if update: write(repo, marks) return result def tags(self): """Merge bookmarks with normal tags""" if self.tagscache: return self.tagscache tagscache = super(bookmark_repo, self).tags() tagscache.update(parse(repo)) return tagscache repo.__class__ = bookmark_repo def uisetup(ui): extensions.wrapfunction(repair, "strip", strip) if ui.configbool('bookmarks', 'track.current'): extensions.wrapcommand(commands.table, 'update', updatecurbookmark) def updatecurbookmark(orig, ui, repo, *args, **opts): '''Set the current bookmark If the user updates to a bookmark we update the .hg/bookmarks.current file. ''' res = orig(ui, repo, *args, **opts) rev = opts['rev'] if not rev and len(args) > 0: rev = args[0] setcurrent(repo, rev) return res cmdtable = { "bookmarks": (bookmark, [('f', 'force', False, _('force')), ('r', 'rev', '', _('revision')), ('d', 'delete', False, _('delete a given bookmark')), ('m', 'rename', '', _('rename a given bookmark'))], _('hg bookmarks [-d] [-m NAME] [-r NAME] [NAME]')), }