Mercurial > hg
view hgext/purge.py @ 36367:043e77f3be09
sshpeer: return framed file object when needed
Currently, wireproto.wirepeer has a default implementation of
_submitbatch() and sshv1peer has a very similar implementation.
The main difference is that sshv1peer is aware of the total amount
of bytes it can read whereas the default implementation reads the
stream until no more data is returned. The default implementation
works for HTTP, since there is a known end to HTTP responses (either
Content-Length or 0 sized chunk).
This commit teaches sshv1peer to use our just-introduced "cappedreader"
class for wrapping a file object to limit the number of bytes that
can be read. We do this by introducing an argument to specify whether
the response is framed. If set, we returned a cappedreader instance
instead of the raw pipe.
_call() always has framed responses. So we set this argument
unconditionally and then .read() the entirety of the result.
Strictly speaking, we don't need to use cappedreader in this case
and can inline frame decoding/read logic. But I like when things
are consistent. The overhead should be negligible.
_callstream() and _callcompressable() are special: whether framing
is used depends on the specific command. So, we define a set
of commands that have framed response. It currently only
contains "batch."
As a result of this change, the one-off implementation of
_submitbatch() in sshv1peer can be removed since it is now
safe to .read() the response's file object until end of stream.
cappedreader takes care of not overrunning the frame.
Differential Revision: https://phab.mercurial-scm.org/D2380
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Wed, 21 Feb 2018 08:35:48 -0800 |
parents | 04baab18d60a |
children | 5a3f8da663e5 |
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# Copyright (C) 2006 - Marco Barisione <marco@barisione.org> # # This is a small extension for Mercurial (https://mercurial-scm.org/) # 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 __future__ import absolute_import import os from mercurial.i18n import _ from mercurial import ( cmdutil, error, registrar, scmutil, util, ) cmdtable = {} command = registrar.command(cmdtable) # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should # be specifying the version(s) of Mercurial they are tested with, or # leave the attribute unspecified. testedwith = 'ships-with-hg-core' @command('purge|clean', [('a', 'abort-on-err', None, _('abort if an error occurs')), ('', 'all', None, _('purge ignored files too')), ('', 'dirs', None, _('purge empty directories')), ('', 'files', None, _('purge files')), ('p', 'print', None, _('print filenames instead of deleting them')), ('0', 'print0', None, _('end filenames with NUL, for use with xargs' ' (implies -p/--print)')), ] + cmdutil.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 the following by default: - 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`) The --files and --dirs options can be used to direct purge to delete only files, only directories, or both. If neither option is given, both will be deleted. 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.get('print') eol = '\n' if opts.get('print0'): eol = '\0' act = False # --print0 implies --print removefiles = opts.get('files') removedirs = opts.get('dirs') if not removefiles and not removedirs: removefiles = True removedirs = True def remove(remove_func, name): if act: try: remove_func(repo.wjoin(name)) except OSError: m = _('%s cannot be removed') % name if opts.get('abort_on_err'): raise error.Abort(m) ui.warn(_('warning: %s\n') % m) else: ui.write('%s%s' % (name, eol)) match = scmutil.match(repo[None], dirs, opts) if removedirs: directories = [] match.explicitdir = match.traversedir = directories.append status = repo.status(match=match, ignored=opts.get('all'), unknown=True) if removefiles: for f in sorted(status.unknown + status.ignored): if act: ui.note(_('removing file %s\n') % f) remove(util.unlink, f) if removedirs: for f in sorted(directories, reverse=True): if match(f) and not os.listdir(repo.wjoin(f)): if act: ui.note(_('removing directory %s\n') % f) remove(os.rmdir, f)