#!/usr/bin/env python

from __future__ import absolute_import

import getopt

import sys

import hgdemandimport

hgdemandimport.enable()

from mercurial.i18n import _

from mercurial import (

    context,

    error,

    fancyopts,

    pycompat,

    simplemerge,

    ui as uimod,

)

from mercurial.utils import (

    procutil,

)

options = [(b'L', b'label', [], _(b'labels to use on conflict markers')),

           (b'a', b'text', None, _(b'treat all files as text')),

           (b'p', b'print', None,

            _(b'print results instead of overwriting LOCAL')),

           (b'', b'no-minimal', None, _(b'no effect (DEPRECATED)')),

           (b'h', b'help', None, _(b'display help and exit')),

           (b'q', b'quiet', None, _(b'suppress output'))]

usage = _(b'''simplemerge [OPTS] LOCAL BASE OTHER

    Simple three-way file merge utility with a minimal feature set.

    Apply to LOCAL the changes necessary to go from BASE to OTHER.

    By default, LOCAL is overwritten with the results of this operation.

''')

class ParseError(Exception):

    """Exception raised on errors in parsing the command line."""

def showhelp():

    pycompat.stdout.write(usage)

    pycompat.stdout.write(b'\noptions:\n')

    out_opts = []

    for shortopt, longopt, default, desc in options:

        out_opts.append((b'%2s%s' % (shortopt and b'-%s' % shortopt,

                                     longopt and b' --%s' % longopt),

                         b'%s' % desc))

    opts_len = max([len(opt[0]) for opt in out_opts])

    for first, second in out_opts:

        pycompat.stdout.write(b' %-*s  %s\n' % (opts_len, first, second))

try:

    for fp in (sys.stdin, pycompat.stdout, sys.stderr):

        procutil.setbinary(fp)

    opts = {}

    try:

        bargv = [a.encode('utf8') for a in sys.argv[1:]]

        args = fancyopts.fancyopts(bargv, options, opts)

    except getopt.GetoptError as e:

        raise ParseError(e)

    if opts[b'help']:

        showhelp()

        sys.exit(0)

    if len(args) != 3:

            raise ParseError(_(b'wrong number of arguments').decode('utf8'))

    local, base, other = args

    sys.exit(simplemerge.simplemerge(uimod.ui.load(),

                                     context.arbitraryfilectx(local),

                                     context.arbitraryfilectx(base),

                                     context.arbitraryfilectx(other),

                                     **pycompat.strkwargs(opts)))

except ParseError as e:

    if pycompat.ispy3:

        e = str(e).encode('utf8')

    pycompat.stdout.write(b"%s: %s\n" % (sys.argv[0].encode('utf8'), e))

    showhelp()

    sys.exit(1)

except error.Abort as e:

    pycompat.stderr.write(b"abort: %s\n" % e)

    sys.exit(255)

except KeyboardInterrupt:

    sys.exit(255)