Mercurial > hg
view hgext/bookmarks.py @ 9810:326a0a6453a3
buildrpm: warn if there is outstanding uncommitted changes
author | Gilles Moris <gilles.moris@free.fr> |
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date | Fri, 06 Nov 2009 09:30:18 +0100 |
parents | 013cc052a926 |
children | dc5b5cc5ca34 25e572394f5c |
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# 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 version 2, incorporated herein by reference. '''track a line of development with movable markers Bookmarks are local movable markers 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 shifts to the new changeset. It is possible to use bookmark names in every revision lookup (e.g. hg merge, hg update). By default, when several bookmarks point to the same changeset, they will all move forward together. It is possible to obtain a more git-like experience by adding the following configuration option to your .hgrc:: [bookmarks] track.current = True This will cause Mercurial to track the bookmark that you are currently using, and only update it. This is similar to git's approach to 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) wlock = repo.wlock() try: file = repo.opener('bookmarks', 'w', atomictemp=True) for refspec, node in refs.iteritems(): file.write("%s %s\n" % (hex(node), refspec)) file.rename() finally: wlock.release() 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 recorded 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 and mark not in refs and current(repo) and refs[current(repo)] == repo.changectx('.').node()): return if mark not in refs: mark = '' wlock = repo.wlock() try: file = repo.opener('bookmarks.current', 'w', atomictemp=True) file.write(mark) file.rename() finally: wlock.release() repo._bookmarkcurrent = mark def bookmark(ui, repo, mark=None, rev=None, force=False, delete=False, rename=None): '''track a line of development with movable markers Bookmarks are pointers to certain commits that move when committing. Bookmarks are local. They can be renamed, copied and deleted. It is possible to use bookmark names in 'hg merge' and 'hg update' to merge and update respectively to a given bookmark. You can use 'hg bookmark NAME' to set a bookmark on the working directory's parent revision with the given name. If you specify a revision using -r REV (where REV may be an existing bookmark), the bookmark is assigned 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 is None: raise util.Abort(_("bookmark name required")) if mark not in marks: raise util.Abort(_("a bookmark of this name does not exist")) if mark == current(repo): setcurrent(repo, None) 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() setcurrent(repo, mark) write(repo, marks) return if mark is 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 ' ' if ui.quiet: ui.write("%s\n" % bmark) else: 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 repo.local(): 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 commitctx(self, ctx, error=False): """Add a revision to the repository and move the bookmark""" wlock = self.wlock() # do both commit and bookmark with lock held try: node = super(bookmark_repo, self).commitctx(ctx, error) if node is None: return None parents = self.changelog.parents(node) if parents[1] == nullid: parents = (parents[0],) marks = parse(self) update = False if ui.configbool('bookmarks', 'track.current'): mark = current(self) if mark and marks[mark] in parents: marks[mark] = node update = True else: for mark, n in marks.items(): if n in parents: marks[mark] = node update = True if update: write(self, marks) return node finally: wlock.release() def addchangegroup(self, source, srctype, url, emptyok=False): parents = self.dirstate.parents() result = super(bookmark_repo, self).addchangegroup( source, srctype, url, emptyok) if result > 1: # We have more heads than before return result node = self.changelog.tip() marks = parse(self) update = False if ui.configbool('bookmarks', 'track.current'): mark = current(self) if mark and marks[mark] in parents: marks[mark] = node update = True else: for mark, n in marks.items(): if n in parents: marks[mark] = node update = True if update: write(self, marks) return result def _findtags(self): """Merge bookmarks with normal tags""" (tags, tagtypes) = super(bookmark_repo, self)._findtags() tags.update(parse(self)) return (tags, tagtypes) 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 [-f] [-d] [-m NAME] [-r REV] [NAME]')), }