view hgext/githelp.py @ 45962:a66568f20ddc

copies: use the rust code for `combine_changeset_copies` Changeset centric copy tracing now use the rust code. The rust code focussed on simplicity and will be optimised later. So the performance is not great yet. Now that all the pieces are in place we can start working on performance in the coming changesets. Below is a table that summarize how slower we got: Repo Cases Source-Rev Dest-Rev Py-time Rust-time Difference Factor ------------------------------------------------------------------------------------------------------------------------------------ mercurial x_revs_x_added_0_copies ad6b123de1c7 39cfcef4f463 : 0.000049 s, 0.000046 s, -0.000003 s, × 0.9388 mercurial x_revs_x_added_x_copies 2b1c78674230 0c1d10351869 : 0.000112 s, 0.000173 s, +0.000061 s, × 1.5446 mercurial x000_revs_x000_added_x_copies 81f8ff2a9bf2 dd3267698d84 : 0.004216 s, 0.006303 s, +0.002087 s, × 1.4950 pypy x_revs_x_added_0_copies aed021ee8ae8 099ed31b181b : 0.000204 s, 0.000229 s, +0.000025 s, × 1.1225 pypy x_revs_x000_added_0_copies 4aa4e1f8e19a 359343b9ac0e : 0.000058 s, 0.000056 s, -0.000002 s, × 0.9655 pypy x_revs_x_added_x_copies ac52eb7bbbb0 72e022663155 : 0.000112 s, 0.000143 s, +0.000031 s, × 1.2768 pypy x_revs_x00_added_x_copies c3b14617fbd7 ace7255d9a26 : 0.000339 s, 0.001166 s, +0.000827 s, × 3.4395 pypy x_revs_x000_added_x000_copies df6f7a526b60 a83dc6a2d56f : 0.010214 s, 0.022931 s, +0.012717 s, × 2.2451 pypy x000_revs_xx00_added_0_copies 89a76aede314 2f22446ff07e : 0.047497 s, 0.852446 s, +0.804949 s, × 17.9474 pypy x000_revs_x000_added_x_copies 8a3b5bfd266e 2c68e87c3efe : 0.075297 s, 2.221824 s, +2.146527 s, × 29.5075 pypy x000_revs_x000_added_x000_copies 89a76aede314 7b3dda341c84 : 0.057322 s, 1.194162 s, +1.136840 s, × 20.8325 pypy x0000_revs_x_added_0_copies d1defd0dc478 c9cb1334cc78 : 0.796264 s, 62.468362 s, +61.672098 s, × 78.4518 pypy x0000_revs_xx000_added_0_copies bf2c629d0071 4ffed77c095c : 0.020491 s, 0.022116 s, +0.001625 s, × 1.0793 pypy x0000_revs_xx000_added_x000_copies 08ea3258278e d9fa043f30c0 : 0.121612 s, 2.972788 s, +2.851176 s, × 24.4449 netbeans x_revs_x_added_0_copies fb0955ffcbcd a01e9239f9e7 : 0.000143 s, 0.000180 s, +0.000037 s, × 1.2587 netbeans x_revs_x000_added_0_copies 6f360122949f 20eb231cc7d0 : 0.000112 s, 0.000123 s, +0.000011 s, × 1.0982 netbeans x_revs_x_added_x_copies 1ada3faf6fb6 5a39d12eecf4 : 0.000232 s, 0.000315 s, +0.000083 s, × 1.3578 netbeans x_revs_x00_added_x_copies 35be93ba1e2c 9eec5e90c05f : 0.000721 s, 0.001297 s, +0.000576 s, × 1.7989 netbeans x000_revs_xx00_added_0_copies eac3045b4fdd 51d4ae7f1290 : 0.010115 s, 0.024884 s, +0.014769 s, × 2.4601 netbeans x000_revs_x000_added_x_copies e2063d266acd 6081d72689dc : 0.015461 s, 0.032653 s, +0.017192 s, × 2.1120 netbeans x000_revs_x000_added_x000_copies ff453e9fee32 411350406ec2 : 0.060756 s, 4.230118 s, +4.169362 s, × 69.6247 netbeans x0000_revs_xx000_added_x000_copies 588c2d1ced70 1aad62e59ddd : 0.605842 s, killed mozilla-central x_revs_x_added_0_copies 3697f962bb7b 7015fcdd43a2 : 0.000164 s, 0.000197 s, +0.000033 s, × 1.2012 mozilla-central x_revs_x000_added_0_copies dd390860c6c9 40d0c5bed75d : 0.000331 s, 0.000622 s, +0.000291 s, × 1.8792 mozilla-central x_revs_x_added_x_copies 8d198483ae3b 14207ffc2b2f : 0.000249 s, 0.000296 s, +0.000047 s, × 1.1888 mozilla-central x_revs_x00_added_x_copies 98cbc58cc6bc 446a150332c3 : 0.000711 s, 0.001626 s, +0.000915 s, × 2.2869 mozilla-central x_revs_x000_added_x000_copies 3c684b4b8f68 0a5e72d1b479 : 0.003438 s, 0.006218 s, +0.002780 s, × 1.8086 mozilla-central x_revs_x0000_added_x0000_copies effb563bb7e5 c07a39dc4e80 : 0.069869 s, 0.132760 s, +0.062891 s, × 1.9001 mozilla-central x000_revs_xx00_added_0_copies 6100d773079a 04a55431795e : 0.005701 s, 0.029001 s, +0.023300 s, × 5.0870 mozilla-central x000_revs_x000_added_x_copies 9f17a6fc04f9 2d37b966abed : 0.005757 s, 0.005886 s, +0.000129 s, × 1.0224 mozilla-central x000_revs_x000_added_x000_copies 7c97034feb78 4407bd0c6330 : 0.061826 s, 3.619850 s, +3.558024 s, × 58.5490 mozilla-central x0000_revs_xx000_added_0_copies 9eec5917337d 67118cc6dcad : 0.043354 s, 0.058678 s, +0.015324 s, × 1.3535 mozilla-central x0000_revs_xx000_added_x000_copies f78c615a656c 96a38b690156 : 0.198979 s, 11.926587 s, +11.727608 s, × 59.9389 mozilla-central x00000_revs_x0000_added_x0000_copies 6832ae71433c 4c222a1d9a00 : 2.067096 s, killed mozilla-central x00000_revs_x00000_added_x000_copies 76caed42cf7c 1daa622bbe42 : 3.102616 s, killed mozilla-try x_revs_x_added_0_copies aaf6dde0deb8 9790f499805a : 0.001212 s, 0.001204 s, -0.000008 s, × 0.9934 mozilla-try x_revs_x000_added_0_copies d8d0222927b4 5bb8ce8c7450 : 0.001237 s, 0.001217 s, -0.000020 s, × 0.9838 mozilla-try x_revs_x_added_x_copies 092fcca11bdb 936255a0384a : 0.000557 s, 0.000605 s, +0.000048 s, × 1.0862 mozilla-try x_revs_x00_added_x_copies b53d2fadbdb5 017afae788ec : 0.001532 s, 0.001876 s, +0.000344 s, × 1.2245 mozilla-try x_revs_x000_added_x000_copies 20408ad61ce5 6f0ee96e21ad : 0.035166 s, 0.078190 s, +0.043024 s, × 2.2235 mozilla-try x_revs_x0000_added_x0000_copies effb563bb7e5 c07a39dc4e80 : 0.070336 s, 0.135428 s, +0.065092 s, × 1.9254 mozilla-try x000_revs_xx00_added_0_copies 6100d773079a 04a55431795e : 0.006080 s, 0.029123 s, +0.023043 s, × 4.7900 mozilla-try x000_revs_x000_added_x_copies 9f17a6fc04f9 2d37b966abed : 0.006099 s, 0.006141 s, +0.000042 s, × 1.0069 mozilla-try x000_revs_x000_added_x000_copies 1346fd0130e4 4c65cbdabc1f : 0.064317 s, 4.857827 s, +4.793510 s, × 75.5294 mozilla-try x0000_revs_x_added_0_copies 63519bfd42ee a36a2a865d92 : 0.303263 s, 10.674920 s, +10.371657 s, × 35.2002 mozilla-try x0000_revs_x_added_x_copies 9fe69ff0762d bcabf2a78927 : 0.292804 s, 9.789462 s, +9.496658 s, × 33.4335 mozilla-try x0000_revs_xx000_added_x_copies 156f6e2674f2 4d0f2c178e66 : 0.107594 s, 1.087890 s, +0.980296 s, × 10.1111 mozilla-try x0000_revs_xx000_added_0_copies 9eec5917337d 67118cc6dcad : 0.045202 s, 0.060556 s, +0.015354 s, × 1.3397 mozilla-try x0000_revs_xx000_added_x000_copies 89294cd501d9 7ccb2fc7ccb5 : 1.926277 s, killed mozilla-try x0000_revs_x0000_added_x0000_copies e928c65095ed e951f4ad123a : 0.794492 s, killed mozilla-try x00000_revs_x_added_0_copies 6a320851d377 1ebb79acd503 : 84.521497 s, killed mozilla-try x00000_revs_x00000_added_0_copies dc8a3ca7010e d16fde900c9c : 0.965937 s, 19.647038 s, +18.681101 s, × 20.3399 mozilla-try x00000_revs_x_added_x_copies 5173c4b6f97c 95d83ee7242d : 83.367146 s, killed mozilla-try x00000_revs_x000_added_x_copies 9126823d0e9c ca82787bb23c : 84.260895 s, killed mozilla-try x00000_revs_x0000_added_x0000_copies 8d3fafa80d4b eb884023b810 : 3.274537 s, killed mozilla-try x00000_revs_x00000_added_x0000_copies 1b661134e2ca 1ae03d022d6d : 42.235843 s, killed mozilla-try x00000_revs_x00000_added_x000_copies 9b2a99adc05e 8e29777b48e6 : 49.872829 s, killed Differential Revision: https://phab.mercurial-scm.org/D9299
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Thu, 01 Oct 2020 18:52:13 +0200
parents 89a2afe31e82
children 6000f5b25c9b
line wrap: on
line source

# githelp.py - Try to map Git commands to Mercurial equivalents.
#
# 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.
"""try mapping git commands to Mercurial commands

Tries to map a given git command to a Mercurial command:

  $ hg githelp -- git checkout master
  hg update master

If an unknown command or parameter combination is detected, an error is
produced.
"""

from __future__ import absolute_import

import getopt
import re

from mercurial.i18n import _
from mercurial import (
    encoding,
    error,
    fancyopts,
    pycompat,
    registrar,
    scmutil,
)
from mercurial.utils import procutil

# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
# be specifying the version(s) of Mercurial they are tested with, or
# leave the attribute unspecified.
testedwith = b'ships-with-hg-core'

cmdtable = {}
command = registrar.command(cmdtable)


def convert(s):
    if s.startswith(b"origin/"):
        return s[7:]
    if b'HEAD' in s:
        s = s.replace(b'HEAD', b'.')
    # HEAD~ in git is .~1 in mercurial
    s = re.sub(b'~$', b'~1', s)
    return s


@command(
    b'githelp|git',
    [],
    _(b'hg githelp'),
    helpcategory=command.CATEGORY_HELP,
    helpbasic=True,
)
def githelp(ui, repo, *args, **kwargs):
    """suggests the Mercurial equivalent of the given git command

    Usage: hg githelp -- <git command>
    """

    if len(args) == 0 or (len(args) == 1 and args[0] == b'git'):
        raise error.Abort(
            _(b'missing git command - usage: hg githelp -- <git command>')
        )

    if args[0] == b'git':
        args = args[1:]

    cmd = args[0]
    if not cmd in gitcommands:
        raise error.Abort(_(b"error: unknown git command %s") % cmd)

    ui.pager(b'githelp')
    args = args[1:]
    return gitcommands[cmd](ui, repo, *args, **kwargs)


def parseoptions(ui, cmdoptions, args):
    cmdoptions = list(cmdoptions)
    opts = {}
    args = list(args)
    while True:
        try:
            args = fancyopts.fancyopts(list(args), cmdoptions, opts, True)
            break
        except getopt.GetoptError as ex:
            if "requires argument" in ex.msg:
                raise
            if ('--' + ex.opt) in ex.msg:
                flag = b'--' + pycompat.bytestr(ex.opt)
            elif ('-' + ex.opt) in ex.msg:
                flag = b'-' + pycompat.bytestr(ex.opt)
            else:
                raise error.Abort(
                    _(b"unknown option %s") % pycompat.bytestr(ex.opt)
                )
            try:
                args.remove(flag)
            except Exception:
                msg = _(b"unknown option '%s' packed with other options")
                hint = _(b"please try passing the option as its own flag: -%s")
                raise error.Abort(
                    msg % pycompat.bytestr(ex.opt),
                    hint=hint % pycompat.bytestr(ex.opt),
                )

            ui.warn(_(b"ignoring unknown option %s\n") % flag)

    args = list([convert(x) for x in args])
    opts = dict(
        [
            (k, convert(v)) if isinstance(v, bytes) else (k, v)
            for k, v in pycompat.iteritems(opts)
        ]
    )

    return args, opts


class Command(object):
    def __init__(self, name):
        self.name = name
        self.args = []
        self.opts = {}

    def __bytes__(self):
        cmd = b"hg " + self.name
        if self.opts:
            for k, values in sorted(pycompat.iteritems(self.opts)):
                for v in values:
                    if v:
                        if isinstance(v, int):
                            fmt = b' %s %d'
                        else:
                            fmt = b' %s %s'

                        cmd += fmt % (k, v)
                    else:
                        cmd += b" %s" % (k,)
        if self.args:
            cmd += b" "
            cmd += b" ".join(self.args)
        return cmd

    __str__ = encoding.strmethod(__bytes__)

    def append(self, value):
        self.args.append(value)

    def extend(self, values):
        self.args.extend(values)

    def __setitem__(self, key, value):
        values = self.opts.setdefault(key, [])
        values.append(value)

    def __and__(self, other):
        return AndCommand(self, other)


class AndCommand(object):
    def __init__(self, left, right):
        self.left = left
        self.right = right

    def __str__(self):
        return b"%s && %s" % (self.left, self.right)

    def __and__(self, other):
        return AndCommand(self, other)


def add(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'A', b'all', None, b''),
        (b'p', b'patch', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    if opts.get(b'patch'):
        ui.status(
            _(
                b"note: Mercurial will commit when complete, "
                b"as there is no staging area in Mercurial\n\n"
            )
        )
        cmd = Command(b'commit --interactive')
    else:
        cmd = Command(b"add")

        if not opts.get(b'all'):
            cmd.extend(args)
        else:
            ui.status(
                _(
                    b"note: use hg addremove to remove files that have "
                    b"been deleted\n\n"
                )
            )

    ui.status((bytes(cmd)), b"\n")


def am(ui, repo, *args, **kwargs):
    cmdoptions = []
    parseoptions(ui, cmdoptions, args)
    cmd = Command(b'import')
    ui.status(bytes(cmd), b"\n")


def apply(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'p', b'p', int, b''),
        (b'', b'directory', b'', b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'import --no-commit')
    if opts.get(b'p'):
        cmd[b'-p'] = opts.get(b'p')
    if opts.get(b'directory'):
        cmd[b'--prefix'] = opts.get(b'directory')
    cmd.extend(args)

    ui.status((bytes(cmd)), b"\n")


def bisect(ui, repo, *args, **kwargs):
    ui.status(_(b"see 'hg help bisect' for how to use bisect\n\n"))


def blame(ui, repo, *args, **kwargs):
    cmdoptions = []
    args, opts = parseoptions(ui, cmdoptions, args)
    cmd = Command(b'annotate -udl')
    cmd.extend([convert(v) for v in args])
    ui.status((bytes(cmd)), b"\n")


def branch(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'set-upstream', None, b''),
        (b'', b'set-upstream-to', b'', b''),
        (b'd', b'delete', None, b''),
        (b'D', b'delete', None, b''),
        (b'm', b'move', None, b''),
        (b'M', b'move', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b"bookmark")

    if opts.get(b'set_upstream') or opts.get(b'set_upstream_to'):
        ui.status(_(b"Mercurial has no concept of upstream branches\n"))
        return
    elif opts.get(b'delete'):
        cmd = Command(b"strip")
        for branch in args:
            cmd[b'-B'] = branch
        else:
            cmd[b'-B'] = None
    elif opts.get(b'move'):
        if len(args) > 0:
            if len(args) > 1:
                old = args.pop(0)
            else:
                # shell command to output the active bookmark for the active
                # revision
                old = b'`hg log -T"{activebookmark}" -r .`'
        else:
            raise error.Abort(_(b'missing newbranch argument'))
        new = args[0]
        cmd[b'-m'] = old
        cmd.append(new)
    else:
        if len(args) > 1:
            cmd[b'-r'] = args[1]
            cmd.append(args[0])
        elif len(args) == 1:
            cmd.append(args[0])
    ui.status((bytes(cmd)), b"\n")


def ispath(repo, string):
    """
    The first argument to git checkout can either be a revision or a path. Let's
    generally assume it's a revision, unless it's obviously a path. There are
    too many ways to spell revisions in git for us to reasonably catch all of
    them, so let's be conservative.
    """
    if scmutil.isrevsymbol(repo, string):
        # if it's definitely a revision let's not even check if a file of the
        # same name exists.
        return False

    cwd = repo.getcwd()
    if cwd == b'':
        repopath = string
    else:
        repopath = cwd + b'/' + string

    exists = repo.wvfs.exists(repopath)
    if exists:
        return True

    manifest = repo[b'.'].manifest()

    didexist = (repopath in manifest) or manifest.hasdir(repopath)

    return didexist


def checkout(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'b', b'branch', b'', b''),
        (b'B', b'branch', b'', b''),
        (b'f', b'force', None, b''),
        (b'p', b'patch', None, b''),
    ]
    paths = []
    if b'--' in args:
        sepindex = args.index(b'--')
        paths.extend(args[sepindex + 1 :])
        args = args[:sepindex]

    args, opts = parseoptions(ui, cmdoptions, args)

    rev = None
    if args and ispath(repo, args[0]):
        paths = args + paths
    elif args:
        rev = args[0]
        paths = args[1:] + paths

    cmd = Command(b'update')

    if opts.get(b'force'):
        if paths or rev:
            cmd[b'-C'] = None

    if opts.get(b'patch'):
        cmd = Command(b'revert')
        cmd[b'-i'] = None

    if opts.get(b'branch'):
        if len(args) == 0:
            cmd = Command(b'bookmark')
            cmd.append(opts.get(b'branch'))
        else:
            cmd.append(args[0])
            bookcmd = Command(b'bookmark')
            bookcmd.append(opts.get(b'branch'))
            cmd = cmd & bookcmd
    # if there is any path argument supplied, use revert instead of update
    elif len(paths) > 0:
        ui.status(_(b"note: use --no-backup to avoid creating .orig files\n\n"))
        cmd = Command(b'revert')
        if opts.get(b'patch'):
            cmd[b'-i'] = None
        if rev:
            cmd[b'-r'] = rev
        cmd.extend(paths)
    elif rev:
        if opts.get(b'patch'):
            cmd[b'-r'] = rev
        else:
            cmd.append(rev)
    elif opts.get(b'force'):
        cmd = Command(b'revert')
        cmd[b'--all'] = None
    else:
        raise error.Abort(_(b"a commit must be specified"))

    ui.status((bytes(cmd)), b"\n")


def cherrypick(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'continue', None, b''),
        (b'', b'abort', None, b''),
        (b'e', b'edit', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'graft')

    if opts.get(b'edit'):
        cmd[b'--edit'] = None
    if opts.get(b'continue'):
        cmd[b'--continue'] = None
    elif opts.get(b'abort'):
        ui.status(_(b"note: hg graft does not have --abort\n\n"))
        return
    else:
        cmd.extend(args)

    ui.status((bytes(cmd)), b"\n")


def clean(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'd', b'd', None, b''),
        (b'f', b'force', None, b''),
        (b'x', b'x', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'purge')
    if opts.get(b'x'):
        cmd[b'--all'] = None
    cmd.extend(args)

    ui.status((bytes(cmd)), b"\n")


def clone(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'bare', None, b''),
        (b'n', b'no-checkout', None, b''),
        (b'b', b'branch', b'', b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    if len(args) == 0:
        raise error.Abort(_(b"a repository to clone must be specified"))

    cmd = Command(b'clone')
    cmd.append(args[0])
    if len(args) > 1:
        cmd.append(args[1])

    if opts.get(b'bare'):
        cmd[b'-U'] = None
        ui.status(
            _(
                b"note: Mercurial does not have bare clones. "
                b"-U will clone the repo without checking out a commit\n\n"
            )
        )
    elif opts.get(b'no_checkout'):
        cmd[b'-U'] = None

    if opts.get(b'branch'):
        cocmd = Command(b"update")
        cocmd.append(opts.get(b'branch'))
        cmd = cmd & cocmd

    ui.status((bytes(cmd)), b"\n")


def commit(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'a', b'all', None, b''),
        (b'm', b'message', b'', b''),
        (b'p', b'patch', None, b''),
        (b'C', b'reuse-message', b'', b''),
        (b'F', b'file', b'', b''),
        (b'', b'author', b'', b''),
        (b'', b'date', b'', b''),
        (b'', b'amend', None, b''),
        (b'', b'no-edit', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'commit')
    if opts.get(b'patch'):
        cmd = Command(b'commit --interactive')

    if opts.get(b'amend'):
        if opts.get(b'no_edit'):
            cmd = Command(b'amend')
        else:
            cmd[b'--amend'] = None

    if opts.get(b'reuse_message'):
        cmd[b'-M'] = opts.get(b'reuse_message')

    if opts.get(b'message'):
        cmd[b'-m'] = b"'%s'" % (opts.get(b'message'),)

    if opts.get(b'all'):
        ui.status(
            _(
                b"note: Mercurial doesn't have a staging area, "
                b"so there is no --all. -A will add and remove files "
                b"for you though.\n\n"
            )
        )

    if opts.get(b'file'):
        cmd[b'-l'] = opts.get(b'file')

    if opts.get(b'author'):
        cmd[b'-u'] = opts.get(b'author')

    if opts.get(b'date'):
        cmd[b'-d'] = opts.get(b'date')

    cmd.extend(args)

    ui.status((bytes(cmd)), b"\n")


def deprecated(ui, repo, *args, **kwargs):
    ui.warn(
        _(
            b'this command has been deprecated in the git project, '
            b'thus isn\'t supported by this tool\n\n'
        )
    )


def diff(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'a', b'all', None, b''),
        (b'', b'cached', None, b''),
        (b'R', b'reverse', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'diff')

    if opts.get(b'cached'):
        ui.status(
            _(
                b'note: Mercurial has no concept of a staging area, '
                b'so --cached does nothing\n\n'
            )
        )

    if opts.get(b'reverse'):
        cmd[b'--reverse'] = None

    for a in list(args):
        args.remove(a)
        try:
            repo.revs(a)
            cmd[b'-r'] = a
        except Exception:
            cmd.append(a)

    ui.status((bytes(cmd)), b"\n")


def difftool(ui, repo, *args, **kwargs):
    ui.status(
        _(
            b'Mercurial does not enable external difftool by default. You '
            b'need to enable the extdiff extension in your .hgrc file by adding\n'
            b'extdiff =\n'
            b'to the [extensions] section and then running\n\n'
            b'hg extdiff -p <program>\n\n'
            b'See \'hg help extdiff\' and \'hg help -e extdiff\' for more '
            b'information.\n'
        )
    )


def fetch(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'all', None, b''),
        (b'f', b'force', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'pull')

    if len(args) > 0:
        cmd.append(args[0])
        if len(args) > 1:
            ui.status(
                _(
                    b"note: Mercurial doesn't have refspecs. "
                    b"-r can be used to specify which commits you want to "
                    b"pull. -B can be used to specify which bookmark you "
                    b"want to pull.\n\n"
                )
            )
            for v in args[1:]:
                if v in repo._bookmarks:
                    cmd[b'-B'] = v
                else:
                    cmd[b'-r'] = v

    ui.status((bytes(cmd)), b"\n")


def grep(ui, repo, *args, **kwargs):
    cmdoptions = []
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'grep')

    # For basic usage, git grep and hg grep are the same. They both have the
    # pattern first, followed by paths.
    cmd.extend(args)

    ui.status((bytes(cmd)), b"\n")


def init(ui, repo, *args, **kwargs):
    cmdoptions = []
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'init')

    if len(args) > 0:
        cmd.append(args[0])

    ui.status((bytes(cmd)), b"\n")


def log(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'follow', None, b''),
        (b'', b'decorate', None, b''),
        (b'n', b'number', b'', b''),
        (b'1', b'1', None, b''),
        (b'', b'pretty', b'', b''),
        (b'', b'format', b'', b''),
        (b'', b'oneline', None, b''),
        (b'', b'stat', None, b''),
        (b'', b'graph', None, b''),
        (b'p', b'patch', None, b''),
        (b'G', b'grep-diff', b'', b''),
        (b'S', b'pickaxe-regex', b'', b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)
    grep_pat = opts.get(b'grep_diff') or opts.get(b'pickaxe_regex')
    if grep_pat:
        cmd = Command(b'grep')
        cmd[b'--diff'] = grep_pat
        ui.status(b'%s\n' % bytes(cmd))
        return

    ui.status(
        _(
            b'note: -v prints the entire commit message like Git does. To '
            b'print just the first line, drop the -v.\n\n'
        )
    )
    ui.status(
        _(
            b"note: see hg help revset for information on how to filter "
            b"log output\n\n"
        )
    )

    cmd = Command(b'log')
    cmd[b'-v'] = None

    if opts.get(b'number'):
        cmd[b'-l'] = opts.get(b'number')
    if opts.get(b'1'):
        cmd[b'-l'] = b'1'
    if opts.get(b'stat'):
        cmd[b'--stat'] = None
    if opts.get(b'graph'):
        cmd[b'-G'] = None
    if opts.get(b'patch'):
        cmd[b'-p'] = None

    if opts.get(b'pretty') or opts.get(b'format') or opts.get(b'oneline'):
        format = opts.get(b'format', b'')
        if b'format:' in format:
            ui.status(
                _(
                    b"note: --format format:??? equates to Mercurial's "
                    b"--template. See hg help templates for more info.\n\n"
                )
            )
            cmd[b'--template'] = b'???'
        else:
            ui.status(
                _(
                    b"note: --pretty/format/oneline equate to Mercurial's "
                    b"--style or --template. See hg help templates for "
                    b"more info.\n\n"
                )
            )
            cmd[b'--style'] = b'???'

    if len(args) > 0:
        if b'..' in args[0]:
            since, until = args[0].split(b'..')
            cmd[b'-r'] = b"'%s::%s'" % (since, until)
            del args[0]
        cmd.extend(args)

    ui.status((bytes(cmd)), b"\n")


def lsfiles(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'c', b'cached', None, b''),
        (b'd', b'deleted', None, b''),
        (b'm', b'modified', None, b''),
        (b'o', b'others', None, b''),
        (b'i', b'ignored', None, b''),
        (b's', b'stage', None, b''),
        (b'z', b'_zero', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    if (
        opts.get(b'modified')
        or opts.get(b'deleted')
        or opts.get(b'others')
        or opts.get(b'ignored')
    ):
        cmd = Command(b'status')
        if opts.get(b'deleted'):
            cmd[b'-d'] = None
        if opts.get(b'modified'):
            cmd[b'-m'] = None
        if opts.get(b'others'):
            cmd[b'-o'] = None
        if opts.get(b'ignored'):
            cmd[b'-i'] = None
    else:
        cmd = Command(b'files')
    if opts.get(b'stage'):
        ui.status(
            _(
                b"note: Mercurial doesn't have a staging area, ignoring "
                b"--stage\n"
            )
        )
    if opts.get(b'_zero'):
        cmd[b'-0'] = None
    cmd.append(b'.')
    for include in args:
        cmd[b'-I'] = procutil.shellquote(include)

    ui.status((bytes(cmd)), b"\n")


def merge(ui, repo, *args, **kwargs):
    cmdoptions = []
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'merge')

    if len(args) > 0:
        cmd.append(args[len(args) - 1])

    ui.status((bytes(cmd)), b"\n")


def mergebase(ui, repo, *args, **kwargs):
    cmdoptions = []
    args, opts = parseoptions(ui, cmdoptions, args)

    if len(args) != 2:
        args = [b'A', b'B']

    cmd = Command(
        b"log -T '{node}\\n' -r 'ancestor(%s,%s)'" % (args[0], args[1])
    )

    ui.status(
        _(b'note: ancestors() is part of the revset language\n'),
        _(b"(learn more about revsets with 'hg help revsets')\n\n"),
    )
    ui.status((bytes(cmd)), b"\n")


def mergetool(ui, repo, *args, **kwargs):
    cmdoptions = []
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b"resolve")

    if len(args) == 0:
        cmd[b'--all'] = None
    cmd.extend(args)
    ui.status((bytes(cmd)), b"\n")


def mv(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'f', b'force', None, b''),
        (b'n', b'dry-run', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'mv')
    cmd.extend(args)

    if opts.get(b'force'):
        cmd[b'-f'] = None
    if opts.get(b'dry_run'):
        cmd[b'-n'] = None

    ui.status((bytes(cmd)), b"\n")


def pull(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'all', None, b''),
        (b'f', b'force', None, b''),
        (b'r', b'rebase', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'pull')
    cmd[b'--rebase'] = None

    if len(args) > 0:
        cmd.append(args[0])
        if len(args) > 1:
            ui.status(
                _(
                    b"note: Mercurial doesn't have refspecs. "
                    b"-r can be used to specify which commits you want to "
                    b"pull. -B can be used to specify which bookmark you "
                    b"want to pull.\n\n"
                )
            )
            for v in args[1:]:
                if v in repo._bookmarks:
                    cmd[b'-B'] = v
                else:
                    cmd[b'-r'] = v

    ui.status((bytes(cmd)), b"\n")


def push(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'all', None, b''),
        (b'f', b'force', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'push')

    if len(args) > 0:
        cmd.append(args[0])
        if len(args) > 1:
            ui.status(
                _(
                    b"note: Mercurial doesn't have refspecs. "
                    b"-r can be used to specify which commits you want "
                    b"to push. -B can be used to specify which bookmark "
                    b"you want to push.\n\n"
                )
            )
            for v in args[1:]:
                if v in repo._bookmarks:
                    cmd[b'-B'] = v
                else:
                    cmd[b'-r'] = v

    if opts.get(b'force'):
        cmd[b'-f'] = None

    ui.status((bytes(cmd)), b"\n")


def rebase(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'all', None, b''),
        (b'i', b'interactive', None, b''),
        (b'', b'onto', b'', b''),
        (b'', b'abort', None, b''),
        (b'', b'continue', None, b''),
        (b'', b'skip', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    if opts.get(b'interactive'):
        ui.status(
            _(
                b"note: hg histedit does not perform a rebase. "
                b"It just edits history.\n\n"
            )
        )
        cmd = Command(b'histedit')
        if len(args) > 0:
            ui.status(
                _(
                    b"also note: 'hg histedit' will automatically detect"
                    b" your stack, so no second argument is necessary\n\n"
                )
            )
        ui.status((bytes(cmd)), b"\n")
        return

    if opts.get(b'skip'):
        cmd = Command(b'revert --all -r .')
        ui.status((bytes(cmd)), b"\n")

    cmd = Command(b'rebase')

    if opts.get(b'continue') or opts.get(b'skip'):
        cmd[b'--continue'] = None
    if opts.get(b'abort'):
        cmd[b'--abort'] = None

    if opts.get(b'onto'):
        ui.status(
            _(
                b"note: if you're trying to lift a commit off one branch, "
                b"try hg rebase -d <destination commit> -s <commit to be "
                b"lifted>\n\n"
            )
        )
        cmd[b'-d'] = convert(opts.get(b'onto'))
        if len(args) < 2:
            raise error.Abort(_(b"expected format: git rebase --onto X Y Z"))
        cmd[b'-s'] = b"'::%s - ::%s'" % (convert(args[1]), convert(args[0]))
    else:
        if len(args) == 1:
            cmd[b'-d'] = convert(args[0])
        elif len(args) == 2:
            cmd[b'-d'] = convert(args[0])
            cmd[b'-b'] = convert(args[1])

    ui.status((bytes(cmd)), b"\n")


def reflog(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'all', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'journal')
    if opts.get(b'all'):
        cmd[b'--all'] = None
    if len(args) > 0:
        cmd.append(args[0])

    ui.status(bytes(cmd), b"\n\n")
    ui.status(
        _(
            b"note: in hg commits can be deleted from repo but we always"
            b" have backups\n"
        )
    )


def reset(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'soft', None, b''),
        (b'', b'hard', None, b''),
        (b'', b'mixed', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    commit = convert(args[0] if len(args) > 0 else b'.')
    hard = opts.get(b'hard')

    if opts.get(b'mixed'):
        ui.status(
            _(
                b'note: --mixed has no meaning since Mercurial has no '
                b'staging area\n\n'
            )
        )
    if opts.get(b'soft'):
        ui.status(
            _(
                b'note: --soft has no meaning since Mercurial has no '
                b'staging area\n\n'
            )
        )

    cmd = Command(b'update')
    if hard:
        cmd.append(b'--clean')

    cmd.append(commit)

    ui.status((bytes(cmd)), b"\n")


def revert(ui, repo, *args, **kwargs):
    cmdoptions = []
    args, opts = parseoptions(ui, cmdoptions, args)

    if len(args) > 1:
        ui.status(
            _(
                b"note: hg backout doesn't support multiple commits at "
                b"once\n\n"
            )
        )

    cmd = Command(b'backout')
    if args:
        cmd.append(args[0])

    ui.status((bytes(cmd)), b"\n")


def revparse(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'show-cdup', None, b''),
        (b'', b'show-toplevel', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    if opts.get(b'show_cdup') or opts.get(b'show_toplevel'):
        cmd = Command(b'root')
        if opts.get(b'show_cdup'):
            ui.status(_(b"note: hg root prints the root of the repository\n\n"))
        ui.status((bytes(cmd)), b"\n")
    else:
        ui.status(_(b"note: see hg help revset for how to refer to commits\n"))


def rm(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'f', b'force', None, b''),
        (b'n', b'dry-run', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'rm')
    cmd.extend(args)

    if opts.get(b'force'):
        cmd[b'-f'] = None
    if opts.get(b'dry_run'):
        cmd[b'-n'] = None

    ui.status((bytes(cmd)), b"\n")


def show(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'name-status', None, b''),
        (b'', b'pretty', b'', b''),
        (b'U', b'unified', int, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    if opts.get(b'name_status'):
        if opts.get(b'pretty') == b'format:':
            cmd = Command(b'status')
            cmd[b'--change'] = b'.'
        else:
            cmd = Command(b'log')
            cmd.append(b'--style status')
            cmd.append(b'-r .')
    elif len(args) > 0:
        if ispath(repo, args[0]):
            cmd = Command(b'cat')
        else:
            cmd = Command(b'export')
        cmd.extend(args)
        if opts.get(b'unified'):
            cmd.append(b'--config diff.unified=%d' % (opts[b'unified'],))
    elif opts.get(b'unified'):
        cmd = Command(b'export')
        cmd.append(b'--config diff.unified=%d' % (opts[b'unified'],))
    else:
        cmd = Command(b'export')

    ui.status((bytes(cmd)), b"\n")


def stash(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'p', b'patch', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'shelve')
    action = args[0] if len(args) > 0 else None

    if action == b'list':
        cmd[b'-l'] = None
        if opts.get(b'patch'):
            cmd[b'-p'] = None
    elif action == b'show':
        if opts.get(b'patch'):
            cmd[b'-p'] = None
        else:
            cmd[b'--stat'] = None
        if len(args) > 1:
            cmd.append(args[1])
    elif action == b'clear':
        cmd[b'--cleanup'] = None
    elif action == b'drop':
        cmd[b'-d'] = None
        if len(args) > 1:
            cmd.append(args[1])
        else:
            cmd.append(b'<shelve name>')
    elif action == b'pop' or action == b'apply':
        cmd = Command(b'unshelve')
        if len(args) > 1:
            cmd.append(args[1])
        if action == b'apply':
            cmd[b'--keep'] = None
    elif action == b'branch' or action == b'create':
        ui.status(
            _(
                b"note: Mercurial doesn't have equivalents to the "
                b"git stash branch or create actions\n\n"
            )
        )
        return
    else:
        if len(args) > 0:
            if args[0] != b'save':
                cmd[b'--name'] = args[0]
            elif len(args) > 1:
                cmd[b'--name'] = args[1]

    ui.status((bytes(cmd)), b"\n")


def status(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'', b'ignored', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    cmd = Command(b'status')
    cmd.extend(args)

    if opts.get(b'ignored'):
        cmd[b'-i'] = None

    ui.status((bytes(cmd)), b"\n")


def svn(ui, repo, *args, **kwargs):
    if not args:
        raise error.Abort(_(b'missing svn command'))
    svncmd = args[0]
    if svncmd not in gitsvncommands:
        raise error.Abort(_(b'unknown git svn command "%s"') % svncmd)

    args = args[1:]
    return gitsvncommands[svncmd](ui, repo, *args, **kwargs)


def svndcommit(ui, repo, *args, **kwargs):
    cmdoptions = []
    parseoptions(ui, cmdoptions, args)

    cmd = Command(b'push')

    ui.status((bytes(cmd)), b"\n")


def svnfetch(ui, repo, *args, **kwargs):
    cmdoptions = []
    parseoptions(ui, cmdoptions, args)

    cmd = Command(b'pull')
    cmd.append(b'default-push')

    ui.status((bytes(cmd)), b"\n")


def svnfindrev(ui, repo, *args, **kwargs):
    cmdoptions = []
    args, opts = parseoptions(ui, cmdoptions, args)

    if not args:
        raise error.Abort(_(b'missing find-rev argument'))

    cmd = Command(b'log')
    cmd[b'-r'] = args[0]

    ui.status((bytes(cmd)), b"\n")


def svnrebase(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'l', b'local', None, b''),
    ]
    parseoptions(ui, cmdoptions, args)

    pullcmd = Command(b'pull')
    pullcmd.append(b'default-push')
    rebasecmd = Command(b'rebase')
    rebasecmd.append(b'tip')

    cmd = pullcmd & rebasecmd

    ui.status((bytes(cmd)), b"\n")


def tag(ui, repo, *args, **kwargs):
    cmdoptions = [
        (b'f', b'force', None, b''),
        (b'l', b'list', None, b''),
        (b'd', b'delete', None, b''),
    ]
    args, opts = parseoptions(ui, cmdoptions, args)

    if opts.get(b'list'):
        cmd = Command(b'tags')
    else:
        cmd = Command(b'tag')

        if not args:
            raise error.Abort(_(b'missing tag argument'))

        cmd.append(args[0])
        if len(args) > 1:
            cmd[b'-r'] = args[1]

        if opts.get(b'delete'):
            cmd[b'--remove'] = None

        if opts.get(b'force'):
            cmd[b'-f'] = None

    ui.status((bytes(cmd)), b"\n")


gitcommands = {
    b'add': add,
    b'am': am,
    b'apply': apply,
    b'bisect': bisect,
    b'blame': blame,
    b'branch': branch,
    b'checkout': checkout,
    b'cherry-pick': cherrypick,
    b'clean': clean,
    b'clone': clone,
    b'commit': commit,
    b'diff': diff,
    b'difftool': difftool,
    b'fetch': fetch,
    b'grep': grep,
    b'init': init,
    b'log': log,
    b'ls-files': lsfiles,
    b'merge': merge,
    b'merge-base': mergebase,
    b'mergetool': mergetool,
    b'mv': mv,
    b'pull': pull,
    b'push': push,
    b'rebase': rebase,
    b'reflog': reflog,
    b'reset': reset,
    b'revert': revert,
    b'rev-parse': revparse,
    b'rm': rm,
    b'show': show,
    b'stash': stash,
    b'status': status,
    b'svn': svn,
    b'tag': tag,
    b'whatchanged': deprecated,
}

gitsvncommands = {
    b'dcommit': svndcommit,
    b'fetch': svnfetch,
    b'find-rev': svnfindrev,
    b'rebase': svnrebase,
}