view tests/pullext.py @ 41454:d1d3094b54f9

patch: handle 0 context lines (diff.unified=0) when parsing patches

Previously, if there were no context lines, we would just keep updating the
ranges and the hunk, but not actually storing the hunk (just overwriting it each
time).  Thus a diff like this:

    $ hg diff --config diff.unified=0
    diff --git a/bar b/bar
    --- a/bar
    +++ b/bar
    @@ -1,0 +2,1 @@ 1
    +change1
    @@ -3,0 +5,1 @@ 3
    +change2

would come out of the parser like this (change1 is lost):

    bar:
    @@ -3,0 +5,1 @@ 3
    +change2

This had some really weird side effects for things like commit --interactive,
split, etc.

Differential Revision: https://phab.mercurial-scm.org/D5743

# pullext.py - Simple extension to test pulling
#
# Copyright 2018 Gregory Szorc <[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.

from __future__ import absolute_import

from mercurial.i18n import _
from mercurial import (
    commands,
    error,
    extensions,
    localrepo,
    repository,
)

def clonecommand(orig, ui, repo, *args, **kwargs):
    if kwargs.get(r'include') or kwargs.get(r'exclude'):
        kwargs[r'narrow'] = True

    if kwargs.get(r'depth'):
        try:
            kwargs[r'depth'] = int(kwargs[r'depth'])
        except ValueError:
            raise error.Abort(_('--depth must be an integer'))

    return orig(ui, repo, *args, **kwargs)

def featuresetup(ui, features):
    features.add(repository.NARROW_REQUIREMENT)

def extsetup(ui):
    entry = extensions.wrapcommand(commands.table, b'clone', clonecommand)

    hasinclude = any(x[1] == b'include' for x in entry[1])
    hasdepth = any(x[1] == b'depth' for x in entry[1])

    if not hasinclude:
        entry[1].append((b'', b'include', [],
                         _(b'pattern of file/directory to clone')))
        entry[1].append((b'', b'exclude', [],
                         _(b'pattern of file/directory to not clone')))

    if not hasdepth:
        entry[1].append((b'', b'depth', b'',
                         _(b'ancestry depth of changesets to fetch')))

    localrepo.featuresetupfuncs.add(featuresetup)