Mercurial > hg
view hgext/pager.py @ 26184:327d09f0b5d4
exchange: allow fallbackheads to use lazy set behavior
The common ancestor set implementation was made lazy a couple years ago, but
this piece of code still required processing the entire repo by putting set()
around the lazy set. The code was introduced in 5653f2d166ea, a year before the
lazy ancestor set was added.
Dropping the set() shaves 3.5 seconds off of 'push -r' in repos with hundreds of
thousands of commits.
author | Durham Goode <durham@fb.com> |
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date | Mon, 07 Sep 2015 17:08:35 -0700 |
parents | 59d794154e8d |
children | 499d5c98e98b |
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# pager.py - display output using a pager # # Copyright 2008 David Soria Parra <dsp@php.net> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. # # To load the extension, add it to your configuration file: # # [extension] # pager = # # Run "hg help pager" to get info on configuration. '''browse command output with an external pager To set the pager that should be used, set the application variable:: [pager] pager = less -FRX If no pager is set, the pager extensions uses the environment variable $PAGER. If neither pager.pager, nor $PAGER is set, no pager is used. You can disable the pager for certain commands by adding them to the pager.ignore list:: [pager] ignore = version, help, update You can also enable the pager only for certain commands using pager.attend. Below is the default list of commands to be paged:: [pager] attend = annotate, cat, diff, export, glog, log, qdiff Setting pager.attend to an empty value will cause all commands to be paged. If pager.attend is present, pager.ignore will be ignored. Lastly, you can enable and disable paging for individual commands with the attend-<command> option. This setting takes precedence over existing attend and ignore options and defaults:: [pager] attend-cat = false To ignore global commands like :hg:`version` or :hg:`help`, you have to specify them in your user configuration file. The --pager=... option can also be used to control when the pager is used. Use a boolean value like yes, no, on, off, or use auto for normal behavior. ''' import atexit, sys, os, signal, subprocess from mercurial import commands, dispatch, util, extensions, cmdutil from mercurial.i18n import _ # Note for extension authors: ONLY specify testedwith = 'internal' 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 = 'internal' def _pagersubprocess(ui, p): pager = subprocess.Popen(p, shell=True, bufsize=-1, close_fds=util.closefds, stdin=subprocess.PIPE, stdout=sys.stdout, stderr=sys.stderr) stdout = os.dup(sys.stdout.fileno()) stderr = os.dup(sys.stderr.fileno()) os.dup2(pager.stdin.fileno(), sys.stdout.fileno()) if ui._isatty(sys.stderr): os.dup2(pager.stdin.fileno(), sys.stderr.fileno()) @atexit.register def killpager(): if util.safehasattr(signal, "SIGINT"): signal.signal(signal.SIGINT, signal.SIG_IGN) pager.stdin.close() os.dup2(stdout, sys.stdout.fileno()) os.dup2(stderr, sys.stderr.fileno()) pager.wait() def _runpager(ui, p): _pagersubprocess(ui, p) def uisetup(ui): if '--debugger' in sys.argv or not ui.formatted(): return def pagecmd(orig, ui, options, cmd, cmdfunc): p = ui.config("pager", "pager", os.environ.get("PAGER")) usepager = False always = util.parsebool(options['pager']) auto = options['pager'] == 'auto' if not p: pass elif always: usepager = True elif not auto: usepager = False else: attend = ui.configlist('pager', 'attend', attended) ignore = ui.configlist('pager', 'ignore') cmds, _ = cmdutil.findcmd(cmd, commands.table) for cmd in cmds: var = 'attend-%s' % cmd if ui.config('pager', var): usepager = ui.configbool('pager', var) break if (cmd in attend or (cmd not in ignore and not attend)): usepager = True break setattr(ui, 'pageractive', usepager) if usepager: ui.setconfig('ui', 'formatted', ui.formatted(), 'pager') ui.setconfig('ui', 'interactive', False, 'pager') if util.safehasattr(signal, "SIGPIPE"): signal.signal(signal.SIGPIPE, signal.SIG_DFL) _runpager(ui, p) return orig(ui, options, cmd, cmdfunc) # Wrap dispatch._runcommand after color is loaded so color can see # ui.pageractive. Otherwise, if we loaded first, color's wrapped # dispatch._runcommand would run without having access to ui.pageractive. def afterloaded(loaded): extensions.wrapfunction(dispatch, '_runcommand', pagecmd) extensions.afterloaded('color', afterloaded) def extsetup(ui): commands.globalopts.append( ('', 'pager', 'auto', _("when to paginate (boolean, always, auto, or never)"), _('TYPE'))) attended = ['annotate', 'cat', 'diff', 'export', 'glog', 'log', 'qdiff']