view contrib/simplemerge @ 43442:625e7d1ffd1c

repoview: wrap changelog class when filtering

The class doesn't yet do anything. I'll move the filter-aware
overrides from the changelog class over one by one to this class in
coming patches. That will leave the changelog class simpler and will
centralize more of the filtering logic to repoview. I could not
measure any performance difference.

Differential Revision: https://phab.mercurial-scm.org/D7236

#!/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,
    stringutil
)

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:
    e = stringutil.forcebytestr(e)
    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)