# commitextras.py

#

# Copyright 2013 Facebook, Inc.

#

# This software may be used and distributed according to the terms of the

# GNU General Public License version 2 or any later version.

'''adds a new flag extras to commit (ADVANCED)'''

import re

from mercurial.i18n import _

from mercurial import (

    commands,

    error,

    extensions,

    registrar,

    util,

)

cmdtable = {}

command = registrar.command(cmdtable)

testedwith = b'ships-with-hg-core'

usedinternally = {

    b'amend_source',

    b'branch',

    b'close',

    b'histedit_source',

    b'topic',

    b'rebase_source',

    b'intermediate-source',

    b'__touch-noise__',

    b'source',

    b'transplant_source',

}

def extsetup(ui):

    entry = extensions.wrapcommand(commands.table, b'commit', _commit)

    options = entry[1]

    options.append(

        (

            b'',

            b'extra',

            [],

            _(b'set a changeset\'s extra values'),

            _(b"KEY=VALUE"),

        )

    )

def _commit(orig, ui, repo, *pats, **opts):

    if util.safehasattr(repo, 'unfiltered'):

        repo = repo.unfiltered()

    class repoextra(repo.__class__):

        def commit(self, *innerpats, **inneropts):

            extras = opts.get('extra')

            for raw in extras:

                if b'=' not in raw:

                    msg = _(

                        b"unable to parse '%s', should follow "

                        b"KEY=VALUE format"

                    )

                    raise error.InputError(msg % raw)

                k, v = raw.split(b'=', 1)

                if not k:

                    msg = _(b"unable to parse '%s', keys can't be empty")

                    raise error.InputError(msg % raw)

                if re.search(br'[^\w-]', k):

                    msg = _(

                        b"keys can only contain ascii letters, digits,"

                        b" '_' and '-'"

                    )

                    raise error.InputError(msg)

                if k in usedinternally:

                    msg = _(

                        b"key '%s' is used internally, can't be set "

                        b"manually"

                    )

                    raise error.InputError(msg % k)

                inneropts['extra'][k] = v

            return super(repoextra, self).commit(*innerpats, **inneropts)

    repo.__class__ = repoextra

    return orig(ui, repo, *pats, **opts)