revset: changed last implementation to use lazy classes
Instead of using getitem just reverse the revision list and get the first
'lim' elements. With classes like spanset which are easily reversible this
will work faster.
Performance Benchmarking:
$ time hg log -qr "last(all())"
...
real 0m0.569s
user 0m0.447s
sys 0m0.122s
$ time ./hg log -qr "last(all())"
...
real 0m0.215s
user 0m0.150s
sys 0m0.063s
# Copyright (C) 2006 - Marco Barisione <marco@barisione.org>
#
# This is a small extension for Mercurial (http://mercurial.selenic.com/)
# that removes files not known to mercurial
#
# This program was inspired by the "cvspurge" script contained in CVS
# utilities (http://www.red-bean.com/cvsutils/).
#
# For help on the usage of "hg purge" use:
# hg help purge
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <http://www.gnu.org/licenses/>.
'''command to delete untracked files from the working directory'''
from mercurial import util, commands, cmdutil, scmutil
from mercurial.i18n import _
import os, stat
cmdtable = {}
command = cmdutil.command(cmdtable)
testedwith = 'internal'
@command('purge|clean',
[('a', 'abort-on-err', None, _('abort if an error occurs')),
('', 'all', None, _('purge ignored files too')),
('p', 'print', None, _('print filenames instead of deleting them')),
('0', 'print0', None, _('end filenames with NUL, for use with xargs'
' (implies -p/--print)')),
] + commands.walkopts,
_('hg purge [OPTION]... [DIR]...'))
def purge(ui, repo, *dirs, **opts):
'''removes files not tracked by Mercurial
Delete files not known to Mercurial. This is useful to test local
and uncommitted changes in an otherwise-clean source tree.
This means that purge will delete:
- Unknown files: files marked with "?" by :hg:`status`
- Empty directories: in fact Mercurial ignores directories unless
they contain files under source control management
But it will leave untouched:
- Modified and unmodified tracked files
- Ignored files (unless --all is specified)
- New files added to the repository (with :hg:`add`)
If directories are given on the command line, only files in these
directories are considered.
Be careful with purge, as you could irreversibly delete some files
you forgot to add to the repository. If you only want to print the
list of files that this program would delete, use the --print
option.
'''
act = not opts['print']
eol = '\n'
if opts['print0']:
eol = '\0'
act = False # --print0 implies --print
def remove(remove_func, name):
if act:
try:
remove_func(repo.wjoin(name))
except OSError:
m = _('%s cannot be removed') % name
if opts['abort_on_err']:
raise util.Abort(m)
ui.warn(_('warning: %s\n') % m)
else:
ui.write('%s%s' % (name, eol))
def removefile(path):
try:
os.remove(path)
except OSError:
# read-only files cannot be unlinked under Windows
s = os.stat(path)
if (s.st_mode & stat.S_IWRITE) != 0:
raise
os.chmod(path, stat.S_IMODE(s.st_mode) | stat.S_IWRITE)
os.remove(path)
directories = []
match = scmutil.match(repo[None], dirs, opts)
match.explicitdir = match.traversedir = directories.append
status = repo.status(match=match, ignored=opts['all'], unknown=True)
for f in sorted(status[4] + status[5]):
ui.note(_('removing file %s\n') % f)
remove(removefile, f)
for f in sorted(directories, reverse=True):
if match(f) and not os.listdir(repo.wjoin(f)):
ui.note(_('removing directory %s\n') % f)
remove(os.rmdir, f)