view hgext/purge.py @ 17119:2e13c1bd34dc

graphlog: display obsolete changeset as "x"

Changeset detected as obsolete will be displayed as "x" instead of 'o':

    o new rewritten changeset
    |
    | x old obsolete changeset
    |/
    |
    o base

This will be useful even when some obsolete changeset will be "hidden" because
not all obsolete changeset can be hidden. If an obsolete changeset have
non-obsolete descendant we can't simply hide it. And having a clear visual hint
that the changeset is obsolete is useful.

The main reason to make this minor change right now is to:

1) introduce an officiel user of the `ctx.obsolete()` method that will detect
   breakage earlier than third party code (mutable, hgview)

2) Do not display any vocabulary related to obsolete. Such vocabulary will
   require discussion.

# Copyright (C) 2006 - Marco Barisione <[e-mail]>
#
# 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.dir = 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)