~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2004, 2005, 2006 by Canonical Ltd

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

# TODO: For things like --diff-prefix, we want a way to customize the display

# of the option argument.

import optparse

import re

from bzrlib.trace import warning

from bzrlib.revisionspec import RevisionSpec

from bzrlib.errors import BzrCommandError

def _parse_revision_str(revstr):

    """This handles a revision string -> revno.

    This always returns a list.  The list will have one element for

    each revision specifier supplied.

    >>> _parse_revision_str('234')

    [<RevisionSpec_revno 234>]

    >>> _parse_revision_str('234..567')

    [<RevisionSpec_revno 234>, <RevisionSpec_revno 567>]

    >>> _parse_revision_str('..')

    [<RevisionSpec None>, <RevisionSpec None>]

    >>> _parse_revision_str('..234')

    [<RevisionSpec None>, <RevisionSpec_revno 234>]

    >>> _parse_revision_str('234..')

    [<RevisionSpec_revno 234>, <RevisionSpec None>]

    >>> _parse_revision_str('234..456..789') # Maybe this should be an error

    [<RevisionSpec_revno 234>, <RevisionSpec_revno 456>, <RevisionSpec_revno 789>]

    >>> _parse_revision_str('234....789') #Error ?

    [<RevisionSpec_revno 234>, <RevisionSpec None>, <RevisionSpec_revno 789>]

    >>> _parse_revision_str('revid:test@other.com-234234')

    [<RevisionSpec_revid revid:test@other.com-234234>]

    >>> _parse_revision_str('revid:test@other.com-234234..revid:test@other.com-234235')

    [<RevisionSpec_revid revid:test@other.com-234234>, <RevisionSpec_revid revid:test@other.com-234235>]

    >>> _parse_revision_str('revid:test@other.com-234234..23')

    [<RevisionSpec_revid revid:test@other.com-234234>, <RevisionSpec_revno 23>]

    >>> _parse_revision_str('date:2005-04-12')

    [<RevisionSpec_date date:2005-04-12>]

    >>> _parse_revision_str('date:2005-04-12 12:24:33')

    [<RevisionSpec_date date:2005-04-12 12:24:33>]

    >>> _parse_revision_str('date:2005-04-12T12:24:33')

    [<RevisionSpec_date date:2005-04-12T12:24:33>]

    >>> _parse_revision_str('date:2005-04-12,12:24:33')

    [<RevisionSpec_date date:2005-04-12,12:24:33>]

    >>> _parse_revision_str('-5..23')

    [<RevisionSpec_revno -5>, <RevisionSpec_revno 23>]

    >>> _parse_revision_str('-5')

    [<RevisionSpec_revno -5>]

    >>> _parse_revision_str('123a')

    Traceback (most recent call last):

      ...

    NoSuchRevisionSpec: No namespace registered for string: '123a'

    >>> _parse_revision_str('abc')

    Traceback (most recent call last):

      ...

    NoSuchRevisionSpec: No namespace registered for string: 'abc'

    >>> _parse_revision_str('branch:../branch2')

    [<RevisionSpec_branch branch:../branch2>]

    >>> _parse_revision_str('branch:../../branch2')

    [<RevisionSpec_branch branch:../../branch2>]

    >>> _parse_revision_str('branch:../../branch2..23')

    [<RevisionSpec_branch branch:../../branch2>, <RevisionSpec_revno 23>]

    """

    # TODO: Maybe move this into revisionspec.py

    revs = []

    sep = re.compile("\\.\\.(?!/)")

    for x in sep.split(revstr):

        revs.append(RevisionSpec.from_string(x or None))

    return revs

def _parse_merge_type(typestring):

    return get_merge_type(typestring)

def get_merge_type(typestring):

    """Attempt to find the merge class/factory associated with a string."""

    from merge import merge_types

    try:

        return merge_types[typestring][0]

    except KeyError:

        templ = '%s%%7s: %%s' % (' '*12)

        lines = [templ % (f[0], f[1][1]) for f in merge_types.iteritems()]

        type_list = '\n'.join(lines)

        msg = "No known merge type %s. Supported types are:\n%s" %\

            (typestring, type_list)

        raise BzrCommandError(msg)

class Option(object):

    """Description of a command line option"""

    # TODO: Some way to show in help a description of the option argument

    OPTIONS = {}

    SHORT_OPTIONS = {}

    def __init__(self, name, help='', type=None, argname=None):

        """Make a new command option.

        name -- regular name of the command, used in the double-dash

            form and also as the parameter to the command's run() 

            method.

        help -- help message displayed in command help

        type -- function called to parse the option argument, or 

            None (default) if this option doesn't take an argument.

        argname -- name of option argument, if any

        """

        # TODO: perhaps a subclass that automatically does 

        # --option, --no-option for reversible booleans

        self.name = name

        self.help = help

        self.type = type

        if type is None:

            assert argname is None

        elif argname is None:

            argname = 'ARG'

        self.argname = argname

    def short_name(self):

        """Return the single character option for this command, if any.

        Short options are globally registered.

        """

        for short, option in Option.SHORT_OPTIONS.iteritems():

            if option is self:

                return short

    def get_negation_name(self):

        if self.name.startswith('no-'):

            return self.name[3:]

        else:

            return 'no-' + self.name

    def add_option(self, parser, short_name):

        """Add this option to an Optparse parser"""

        option_strings = ['--%s' % self.name]

        if short_name is not None:

            option_strings.append('-%s' % short_name)

        optargfn = self.type

        if optargfn is None:

            parser.add_option(action='store_true', dest=self.name, 

                              help=self.help,

                              default=OptionParser.DEFAULT_VALUE,

                              *option_strings)

            negation_strings = ['--%s' % self.get_negation_name()]

            parser.add_option(action='store_false', dest=self.name, 

                              help=optparse.SUPPRESS_HELP, *negation_strings)

        else:

            parser.add_option(action='callback', 

                              callback=self._optparse_callback, 

                              type='string', metavar=self.argname.upper(),

                              help=self.help,

                              default=OptionParser.DEFAULT_VALUE, 

                              *option_strings)

    def _optparse_callback(self, option, opt, value, parser):

        setattr(parser.values, self.name, self.type(value))

    def iter_switches(self):

        """Iterate through the list of switches provided by the option

        :return: an iterator of (name, short_name, argname, help)

        """

        argname =  self.argname

        if argname is not None:

            argname = argname.upper()

        yield self.name, self.short_name(), argname, self.help

class OptionParser(optparse.OptionParser):

    """OptionParser that raises exceptions instead of exiting"""

    DEFAULT_VALUE = object()

    def error(self, message):

        raise BzrCommandError(message)

def get_optparser(options):

    """Generate an optparse parser for bzrlib-style options"""

    parser = OptionParser()

    parser.remove_option('--help')

    short_options = dict((k.name, v) for v, k in 

                         Option.SHORT_OPTIONS.iteritems())

    for option in options.itervalues():

        option.add_option(parser, short_options.get(option.name))

    return parser

def _global_option(name, **kwargs):

    """Register o as a global option."""

    Option.OPTIONS[name] = Option(name, **kwargs)

_global_option('all')

_global_option('overwrite', help='Ignore differences between branches and '

               'overwrite unconditionally')

_global_option('basis', type=str)

_global_option('bound')

_global_option('diff-options', type=str)

_global_option('help',

               help='show help message')

_global_option('file', type=unicode)

_global_option('force')

_global_option('format', type=unicode)

_global_option('forward')

_global_option('message', type=unicode)

_global_option('no-recurse')

_global_option('prefix', type=str, 

               help='Set prefixes to added to old and new filenames, as '

                    'two values separated by a colon.')

_global_option('profile',

               help='show performance profiling information')

_global_option('revision', type=_parse_revision_str)

_global_option('show-ids', 

               help='show internal object ids')

_global_option('timezone', 

               type=str,

               help='display timezone as local, original, or utc')

_global_option('unbound')

_global_option('verbose',

               help='display more information')

_global_option('version')

_global_option('email')

_global_option('update')

_global_option('log-format', type=str, help="Use this log format")

_global_option('long', help='Use detailed log format. Same as --log-format long')

_global_option('short', help='Use moderately short log format. Same as --log-format short')

_global_option('line', help='Use log format with one line per revision. Same as --log-format line')

_global_option('root', type=str)

_global_option('no-backup')

_global_option('merge-type', type=_parse_merge_type, 

               help='Select a particular merge algorithm')

_global_option('pattern', type=str)

_global_option('quiet')

_global_option('remember', help='Remember the specified location as a'

               ' default.')

_global_option('reprocess', help='Reprocess to reduce spurious conflicts')

_global_option('kind', type=str)

_global_option('dry-run',

               help="show what would be done, but don't actually do anything")

def _global_short(short_name, long_name):

    assert short_name not in Option.SHORT_OPTIONS

    Option.SHORT_OPTIONS[short_name] = Option.OPTIONS[long_name]

Option.SHORT_OPTIONS['F'] = Option.OPTIONS['file']

Option.SHORT_OPTIONS['h'] = Option.OPTIONS['help']

Option.SHORT_OPTIONS['m'] = Option.OPTIONS['message']

Option.SHORT_OPTIONS['r'] = Option.OPTIONS['revision']

Option.SHORT_OPTIONS['v'] = Option.OPTIONS['verbose']

Option.SHORT_OPTIONS['l'] = Option.OPTIONS['long']

Option.SHORT_OPTIONS['q'] = Option.OPTIONS['quiet']

Option.SHORT_OPTIONS['p'] = Option.OPTIONS['prefix']