Mercurial > hg
view mercurial/repair.py @ 12536:208fc9ad6a48
alias: only allow global options before a shell alias, pass later ones through
This patch refactors the dispatch code to change how arguments to shell aliases
are handled.
A separate "pass" to determine whether a command is a shell alias has been
added. The rough steps dispatch now performs when a command is given are these:
* Parse all arguments up to the command name.
* If any arguments such as --repository or --cwd are given (which could change
the config file used, and therefore the definition of aliases), they are
taken into account.
* We determine whether the command is a shell alias.
* If so, execute the alias. The --repo and --cwd arguments are still in effect.
Any arguments *after* the command name are passed unchanged through to the
shell command (and interpolated as normal.
* If the command is *not* a shell alias, the dispatching is effectively "reset"
and reparsed as normal in its entirety.
The net effect of this patch is to make shell alias commands behave as you
would expect.
Any arguments you give to a shell alias *after* the alias name are passed
through unchanged. This lets you do something like the following:
[alias]
filereleased = !$HG log -r 'descendants(adds("$1")) and tagged()' -l1 $2 $3 $4 $5
$ hg filereleased hgext/bookmarks.py --style compact
Previously the `--style compact` part would fail because Mercurial would
interpret those arguments as arguments to the alias command itself (which
doesn't take any arguments).
Also: running something like `hg -R ~/src/hg-crew filereleased
hgext/bookmarks.py` when `filereleased` is only defined in that repo's config
will now work.
These global arguments can *only* be given to a shell alias *before* the alias
name. For example, this will *not* work in the above situation:
$ hg filereleased -R ~/src/hg-crew hgext/bookmarks.py
The reason for this is that you may want to pass arguments like --repository to
the alias (or, more likely, their short versions like -R):
[alias]
own = !chown $@ `$HG root`
$ hg own steve
$ hg own -R steve
author | Steve Losh <steve@stevelosh.com> |
---|---|
date | Tue, 24 Aug 2010 18:25:33 -0400 |
parents | 798ef5b19cb1 |
children | ee01d9d84115 |
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# repair.py - functions for repository repair for mercurial # # Copyright 2005, 2006 Chris Mason <mason@suse.com> # Copyright 2007 Matt Mackall # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. import changegroup from node import nullrev, short from i18n import _ import os def _bundle(repo, bases, heads, node, suffix, extranodes=None, compress=True): """create a bundle with the specified revisions as a backup""" cg = repo.changegroupsubset(bases, heads, 'strip', extranodes) backupdir = repo.join("strip-backup") if not os.path.isdir(backupdir): os.mkdir(backupdir) name = os.path.join(backupdir, "%s-%s.hg" % (short(node), suffix)) if compress: bundletype = "HG10BZ" else: bundletype = "HG10UN" return changegroup.writebundle(cg, name, bundletype) def _collectfiles(repo, striprev): """find out the filelogs affected by the strip""" files = set() for x in xrange(striprev, len(repo)): files.update(repo[x].files()) return sorted(files) def _collectextranodes(repo, files, link): """return the nodes that have to be saved before the strip""" def collectone(cl, revlog): extra = [] startrev = count = len(revlog) # find the truncation point of the revlog for i in xrange(count): lrev = revlog.linkrev(i) if lrev >= link: startrev = i + 1 break # see if any revision after that point has a linkrev less than link # (we have to manually save these guys) for i in xrange(startrev, count): node = revlog.node(i) lrev = revlog.linkrev(i) if lrev < link: extra.append((node, cl.node(lrev))) return extra extranodes = {} cl = repo.changelog extra = collectone(cl, repo.manifest) if extra: extranodes[1] = extra for fname in files: f = repo.file(fname) extra = collectone(cl, f) if extra: extranodes[fname] = extra return extranodes def strip(ui, repo, node, backup="all"): cl = repo.changelog # TODO delete the undo files, and handle undo of merge sets striprev = cl.rev(node) keeppartialbundle = backup == 'strip' # Some revisions with rev > striprev may not be descendants of striprev. # We have to find these revisions and put them in a bundle, so that # we can restore them after the truncations. # To create the bundle we use repo.changegroupsubset which requires # the list of heads and bases of the set of interesting revisions. # (head = revision in the set that has no descendant in the set; # base = revision in the set that has no ancestor in the set) tostrip = set((striprev,)) saveheads = set() savebases = [] for r in xrange(striprev + 1, len(cl)): parents = cl.parentrevs(r) if parents[0] in tostrip or parents[1] in tostrip: # r is a descendant of striprev tostrip.add(r) # if this is a merge and one of the parents does not descend # from striprev, mark that parent as a savehead. if parents[1] != nullrev: for p in parents: if p not in tostrip and p > striprev: saveheads.add(p) else: # if no parents of this revision will be stripped, mark it as # a savebase if parents[0] < striprev and parents[1] < striprev: savebases.append(cl.node(r)) saveheads.difference_update(parents) saveheads.add(r) saveheads = [cl.node(r) for r in saveheads] files = _collectfiles(repo, striprev) extranodes = _collectextranodes(repo, files, striprev) # create a changegroup for all the branches we need to keep backupfile = None if backup == "all": backupfile = _bundle(repo, [node], cl.heads(), node, 'backup') repo.ui.status(_("saved backup bundle to %s\n") % backupfile) if saveheads or extranodes: # do not compress partial bundle if we remove it from disk later chgrpfile = _bundle(repo, savebases, saveheads, node, 'temp', extranodes=extranodes, compress=keeppartialbundle) mfst = repo.manifest tr = repo.transaction("strip") offset = len(tr.entries) try: tr.startgroup() cl.strip(striprev, tr) mfst.strip(striprev, tr) for fn in files: repo.file(fn).strip(striprev, tr) tr.endgroup() try: for i in xrange(offset, len(tr.entries)): file, troffset, ignore = tr.entries[i] repo.sopener(file, 'a').truncate(troffset) tr.close() except: tr.abort() raise if saveheads or extranodes: ui.note(_("adding branch\n")) f = open(chgrpfile, "rb") gen = changegroup.readbundle(f, chgrpfile) if not repo.ui.verbose: # silence internal shuffling chatter repo.ui.pushbuffer() repo.addchangegroup(gen, 'strip', 'bundle:' + chgrpfile, True) if not repo.ui.verbose: repo.ui.popbuffer() f.close() if not keeppartialbundle: os.unlink(chgrpfile) except: if backupfile: ui.warn(_("strip failed, full bundle stored in '%s'\n") % backupfile) elif saveheads: ui.warn(_("strip failed, partial bundle stored in '%s'\n") % chgrpfile) raise repo.destroyed()