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# Copyright (C) 2006 - Marco Barisione <marco@barisione.org>
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#
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# This is a small extension for Mercurial (http://www.selenic.com/mercurial)
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# that removes files not known to mercurial
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#
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# This program was inspired by the "cvspurge" script contained in CVS utilities
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# (http://www.red-bean.com/cvsutils/).
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#
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# To enable the "purge" extension put these lines in your ~/.hgrc:
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# [extensions]
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# hgext.purge =
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#
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# For help on the usage of "hg purge" use:
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# hg help purge
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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from mercurial import util, commands, cmdutil
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from mercurial.i18n import _
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import os
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def purge(ui, repo, *dirs, **opts):
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'''removes files not tracked by mercurial
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Delete files not known to mercurial, this is useful to test local and
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uncommitted changes in the otherwise clean source tree.
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This means that purge will delete:
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- Unknown files: files marked with "?" by "hg status"
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- Ignored files: files usually ignored by Mercurial because they match
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a pattern in a ".hgignore" file
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- Empty directories: in fact Mercurial ignores directories unless they
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contain files under source control managment
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But it will leave untouched:
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- Unmodified tracked files
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- Modified tracked files
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- New files added to the repository (with "hg add")
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If directories are given on the command line, only files in these
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directories are considered.
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Be careful with purge, you could irreversibly delete some files you
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forgot to add to the repository. If you only want to print the list of
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files that this program would delete use the --print option.
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'''
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act = not opts['print']
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abort_on_err = bool(opts['abort_on_err'])
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eol = opts['print0'] and '\0' or '\n'
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if eol == '\0':
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# --print0 implies --print
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act = False
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force = bool(opts['force'])
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def error(msg):
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if abort_on_err:
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raise util.Abort(msg)
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else:
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ui.warn(_('warning: %s\n') % msg)
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def remove(remove_func, name):
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if act:
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try:
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remove_func(os.path.join(repo.root, name))
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except OSError, e:
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error(_('%s cannot be removed') % name)
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else:
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ui.write('%s%s' % (name, eol))
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if not force:
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_check_fs(ui, repo)
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directories = []
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files = []
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match = cmdutil.match(repo, dirs, opts)
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match.dir = directories.append
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status = repo.status(match=match, ignored=opts['all'], unknown=True)
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files = status[4] + status[5]
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files.sort()
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directories.sort()
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for f in files:
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ui.note(_('Removing file %s\n') % f)
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remove(os.remove, f)
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for f in directories[::-1]:
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if match(f) and not os.listdir(repo.wjoin(f)):
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ui.note(_('Removing directory %s\n') % f)
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remove(os.rmdir, f)
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def _check_fs(ui, repo):
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"""Abort if there is the chance of having problems with name-mangling fs
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In a name mangling filesystem (e.g. a case insensitive one)
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dirstate.walk() can yield filenames different from the ones
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stored in the dirstate. This already confuses the status and
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add commands, but with purge this may cause data loss.
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To prevent this, this function will abort if there are uncommitted
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changes.
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"""
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# We can't use (files, match) to do a partial walk here - we wouldn't
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# notice a modified README file if the user ran "hg purge readme"
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modified, added, removed, deleted = repo.status()[:4]
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if modified or added or removed or deleted:
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if not util.checkcase(repo.path) and not ui.quiet:
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ui.warn(_("Purging on case-insensitive filesystems is not "
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"fully supported.\n"))
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raise util.Abort(_("outstanding uncommitted changes"))
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cmdtable = {
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'purge|clean':
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(purge,
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[('a', 'abort-on-err', None, _('abort if an error occurs')),
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('', 'all', None, _('purge ignored files too')),
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('f', 'force', None, _('purge even when there are uncommitted changes')),
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('p', 'print', None, _('print the file names instead of deleting them')),
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('0', 'print0', None, _('end filenames with NUL, for use with xargs'
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' (implies -p)')),
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] + commands.walkopts,
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_('hg purge [OPTION]... [DIR]...'))
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}
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