hgext/inotify/__init__.py

tests: add helper script for processing doctests read from stdin

Writes stdin to a temp file and doctests it.

In the future we might want to spare the temp file and directly call into
doctest.

Also, with some tweaking it seems possible to adjust the line numbers reported
in an error report so they match the ones in the original file.

# __init__.py - inotify-based status acceleration for Linux
#
# Copyright 2006, 2007, 2008 Bryan O'Sullivan <[e-mail]>
# Copyright 2007, 2008 Brendan Cully <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

'''accelerate status report using Linux's inotify service'''

# todo: socket permissions

from mercurial.i18n import _
from mercurial import util
import server
from client import client, QueryFailed

def serve(ui, repo, **opts):
    '''start an inotify server for this repository'''
    server.start(ui, repo.dirstate, repo.root, opts)

def debuginotify(ui, repo, **opts):
    '''debugging information for inotify extension

    Prints the list of directories being watched by the inotify server.
    '''
    cli = client(ui, repo)
    response = cli.debugquery()

    ui.write(_('directories being watched:\n'))
    for path in response:
        ui.write(('  %s/\n') % path)

def reposetup(ui, repo):
    if not util.safehasattr(repo, 'dirstate'):
        return

    class inotifydirstate(repo.dirstate.__class__):

        # We'll set this to false after an unsuccessful attempt so that
        # next calls of status() within the same instance don't try again
        # to start an inotify server if it won't start.
        _inotifyon = True

        def status(self, match, subrepos, ignored, clean, unknown):
            files = match.files()
            if '.' in files:
                files = []
            if self._inotifyon and not ignored and not subrepos and not self._dirty:
                cli = client(ui, repo)
                try:
                    result = cli.statusquery(files, match, False,
                                            clean, unknown)
                except QueryFailed, instr:
                    ui.debug(str(instr))
                    # don't retry within the same hg instance
                    inotifydirstate._inotifyon = False
                    pass
                else:
                    if ui.config('inotify', 'debug'):
                        r2 = super(inotifydirstate, self).status(
                            match, [], False, clean, unknown)
                        for c, a, b in zip('LMARDUIC', result, r2):
                            for f in a:
                                if f not in b:
                                    ui.warn('*** inotify: %s +%s\n' % (c, f))
                            for f in b:
                                if f not in a:
                                    ui.warn('*** inotify: %s -%s\n' % (c, f))
                        result = r2
                    return result
            return super(inotifydirstate, self).status(
                match, subrepos, ignored, clean, unknown)

    repo.dirstate.__class__ = inotifydirstate

cmdtable = {
    'debuginotify':
        (debuginotify, [], ('hg debuginotify')),
    '^inserve':
        (serve,
         [('d', 'daemon', None, _('run server in background')),
          ('', 'daemon-pipefds', '',
           _('used internally by daemon mode'), _('NUM')),
          ('t', 'idle-timeout', '',
           _('minutes to sit idle before exiting'), _('NUM')),
          ('', 'pid-file', '',
           _('name of file to write process ID to'), _('FILE'))],
         _('hg inserve [OPTION]...')),
    }