Mercurial > hg
view mercurial/diffutil.py @ 43255:b8d60845fa5d
copies: extract data extraction into a `revinfo` function
The function is build once at the beginning of the algorithm and used fetch
appropriate information for each revision.
This abstracts some implementation details from the main algorithm and will help
us to access the data more efficiently in future changesets.
Differential Revision: https://phab.mercurial-scm.org/D7070
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Wed, 02 Oct 2019 17:42:01 -0400 |
parents | 687b865b95ad |
children | 89a2afe31e82 |
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# 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=b'diff', configprefix=b'' ): '''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=b'diff', git=False, whitespace=False, formatchanging=False, configprefix=b'', ): '''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 = { b'nodates': get(b'nodates'), b'showfunc': get(b'show_function', b'showfunc'), b'context': get(b'unified', getter=ui.config), } buildopts[b'xdiff'] = ui.configbool(b'experimental', b'xdiff') if git: buildopts[b'git'] = get(b'git') # since this is in the experimental section, we need to call # ui.configbool directory buildopts[b'showsimilarity'] = ui.configbool( b'experimental', b'extendedheader.similarity' ) # need to inspect the ui object instead of using get() since we want to # test for an int hconf = ui.config(b'experimental', b'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 = _(b"invalid length for extendedheader.index: '%d'\n") ui.warn(msg % hlen) except ValueError: # default value if hconf == b'short' or hconf == b'': hlen = 12 elif hconf == b'full': hlen = 40 elif hconf != b'none': msg = _(b"invalid value for extendedheader.index: '%s'\n") ui.warn(msg % hconf) finally: buildopts[b'index'] = hlen if whitespace: buildopts[b'ignorews'] = get(b'ignore_all_space', b'ignorews') buildopts[b'ignorewsamount'] = get( b'ignore_space_change', b'ignorewsamount' ) buildopts[b'ignoreblanklines'] = get( b'ignore_blank_lines', b'ignoreblanklines' ) buildopts[b'ignorewseol'] = get(b'ignore_space_at_eol', b'ignorewseol') if formatchanging: buildopts[b'text'] = opts and opts.get(b'text') binary = None if opts is None else opts.get(b'binary') buildopts[b'nobinary'] = ( not binary if binary is not None else get(b'nobinary', forceplain=False) ) buildopts[b'noprefix'] = get(b'noprefix', forceplain=False) buildopts[b'worddiff'] = get( b'word_diff', b'word-diff', forceplain=False ) return mdiff.diffopts(**pycompat.strkwargs(buildopts))