discovery: simply walk the undecided revs when building the children mapping
The sampling only care about revisions in the undecided set, so building children
relationship within this set is sufficient.
The set of undecided changesets can be much smaller than the full span from its
smallest item to the tip of the repository. This restriction can significantly
speed up operations in some cases.
For example, on our private pathological case, this speeds things up from about
53 seconds to about 7.5 seconds.
# diffutil.py - utility functions related to diff and patch
#
# Copyright 2006 Brendan Cully <brendan@kublai.com>
# Copyright 2007 Chris Mason <chris.mason@oracle.com>
# Copyright 2018 Octobus <octobus@octobus.net>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
from .i18n import _
from . import (
mdiff,
pycompat,
)
def diffallopts(ui, opts=None, untrusted=False, section='diff',
configprefix=''):
'''return diffopts with all features supported and parsed'''
return difffeatureopts(ui, opts=opts, untrusted=untrusted, section=section,
git=True, whitespace=True, formatchanging=True,
configprefix=configprefix)
def difffeatureopts(ui, opts=None, untrusted=False, section='diff', git=False,
whitespace=False, formatchanging=False, configprefix=''):
'''return diffopts with only opted-in features parsed
Features:
- git: git-style diffs
- whitespace: whitespace options like ignoreblanklines and ignorews
- formatchanging: options that will likely break or cause correctness issues
with most diff parsers
'''
def get(key, name=None, getter=ui.configbool, forceplain=None):
if opts:
v = opts.get(key)
# diffopts flags are either None-default (which is passed
# through unchanged, so we can identify unset values), or
# some other falsey default (eg --unified, which defaults
# to an empty string). We only want to override the config
# entries from hgrc with command line values if they
# appear to have been set, which is any truthy value,
# True, or False.
if v or isinstance(v, bool):
return v
if forceplain is not None and ui.plain():
return forceplain
return getter(section, configprefix + (name or key),
untrusted=untrusted)
# core options, expected to be understood by every diff parser
buildopts = {
'nodates': get('nodates'),
'showfunc': get('show_function', 'showfunc'),
'context': get('unified', getter=ui.config),
}
buildopts['xdiff'] = ui.configbool('experimental', 'xdiff')
if git:
buildopts['git'] = get('git')
# since this is in the experimental section, we need to call
# ui.configbool directory
buildopts['showsimilarity'] = ui.configbool('experimental',
'extendedheader.similarity')
# need to inspect the ui object instead of using get() since we want to
# test for an int
hconf = ui.config('experimental', 'extendedheader.index')
if hconf is not None:
hlen = None
try:
# the hash config could be an integer (for length of hash) or a
# word (e.g. short, full, none)
hlen = int(hconf)
if hlen < 0 or hlen > 40:
msg = _("invalid length for extendedheader.index: '%d'\n")
ui.warn(msg % hlen)
except ValueError:
# default value
if hconf == 'short' or hconf == '':
hlen = 12
elif hconf == 'full':
hlen = 40
elif hconf != 'none':
msg = _("invalid value for extendedheader.index: '%s'\n")
ui.warn(msg % hconf)
finally:
buildopts['index'] = hlen
if whitespace:
buildopts['ignorews'] = get('ignore_all_space', 'ignorews')
buildopts['ignorewsamount'] = get('ignore_space_change',
'ignorewsamount')
buildopts['ignoreblanklines'] = get('ignore_blank_lines',
'ignoreblanklines')
buildopts['ignorewseol'] = get('ignore_space_at_eol', 'ignorewseol')
if formatchanging:
buildopts['text'] = opts and opts.get('text')
binary = None if opts is None else opts.get('binary')
buildopts['nobinary'] = (not binary if binary is not None
else get('nobinary', forceplain=False))
buildopts['noprefix'] = get('noprefix', forceplain=False)
buildopts['worddiff'] = get('word_diff', 'word-diff', forceplain=False)
return mdiff.diffopts(**pycompat.strkwargs(buildopts))