|
|
# fancyopts.py - better command line parsing
|
|
|
#
|
|
|
# Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms of the
|
|
|
# GNU General Public License version 2 or any later version.
|
|
|
|
|
|
from __future__ import absolute_import
|
|
|
|
|
|
import abc
|
|
|
import functools
|
|
|
|
|
|
from .i18n import _
|
|
|
from . import (
|
|
|
error,
|
|
|
pycompat,
|
|
|
)
|
|
|
|
|
|
# Set of flags to not apply boolean negation logic on
|
|
|
nevernegate = {
|
|
|
# avoid --no-noninteractive
|
|
|
b'noninteractive',
|
|
|
# These two flags are special because they cause hg to do one
|
|
|
# thing and then exit, and so aren't suitable for use in things
|
|
|
# like aliases anyway.
|
|
|
b'help',
|
|
|
b'version',
|
|
|
}
|
|
|
|
|
|
|
|
|
def _earlyoptarg(arg, shortlist, namelist):
|
|
|
"""Check if the given arg is a valid unabbreviated option
|
|
|
|
|
|
Returns (flag_str, has_embedded_value?, embedded_value, takes_value?)
|
|
|
|
|
|
>>> def opt(arg):
|
|
|
... return _earlyoptarg(arg, b'R:q', [b'cwd=', b'debugger'])
|
|
|
|
|
|
long form:
|
|
|
|
|
|
>>> opt(b'--cwd')
|
|
|
('--cwd', False, '', True)
|
|
|
>>> opt(b'--cwd=')
|
|
|
('--cwd', True, '', True)
|
|
|
>>> opt(b'--cwd=foo')
|
|
|
('--cwd', True, 'foo', True)
|
|
|
>>> opt(b'--debugger')
|
|
|
('--debugger', False, '', False)
|
|
|
>>> opt(b'--debugger=') # invalid but parsable
|
|
|
('--debugger', True, '', False)
|
|
|
|
|
|
short form:
|
|
|
|
|
|
>>> opt(b'-R')
|
|
|
('-R', False, '', True)
|
|
|
>>> opt(b'-Rfoo')
|
|
|
('-R', True, 'foo', True)
|
|
|
>>> opt(b'-q')
|
|
|
('-q', False, '', False)
|
|
|
>>> opt(b'-qfoo') # invalid but parsable
|
|
|
('-q', True, 'foo', False)
|
|
|
|
|
|
unknown or invalid:
|
|
|
|
|
|
>>> opt(b'--unknown')
|
|
|
('', False, '', False)
|
|
|
>>> opt(b'-u')
|
|
|
('', False, '', False)
|
|
|
>>> opt(b'-ufoo')
|
|
|
('', False, '', False)
|
|
|
>>> opt(b'--')
|
|
|
('', False, '', False)
|
|
|
>>> opt(b'-')
|
|
|
('', False, '', False)
|
|
|
>>> opt(b'-:')
|
|
|
('', False, '', False)
|
|
|
>>> opt(b'-:foo')
|
|
|
('', False, '', False)
|
|
|
"""
|
|
|
if arg.startswith(b'--'):
|
|
|
flag, eq, val = arg.partition(b'=')
|
|
|
if flag[2:] in namelist:
|
|
|
return flag, bool(eq), val, False
|
|
|
if flag[2:] + b'=' in namelist:
|
|
|
return flag, bool(eq), val, True
|
|
|
elif arg.startswith(b'-') and arg != b'-' and not arg.startswith(b'-:'):
|
|
|
flag, val = arg[:2], arg[2:]
|
|
|
i = shortlist.find(flag[1:])
|
|
|
if i >= 0:
|
|
|
return flag, bool(val), val, shortlist.startswith(b':', i + 1)
|
|
|
return b'', False, b'', False
|
|
|
|
|
|
|
|
|
def earlygetopt(args, shortlist, namelist, gnu=False, keepsep=False):
|
|
|
"""Parse options like getopt, but ignores unknown options and abbreviated
|
|
|
forms
|
|
|
|
|
|
If gnu=False, this stops processing options as soon as a non/unknown-option
|
|
|
argument is encountered. Otherwise, option and non-option arguments may be
|
|
|
intermixed, and unknown-option arguments are taken as non-option.
|
|
|
|
|
|
If keepsep=True, '--' won't be removed from the list of arguments left.
|
|
|
This is useful for stripping early options from a full command arguments.
|
|
|
|
|
|
>>> def get(args, gnu=False, keepsep=False):
|
|
|
... return earlygetopt(args, b'R:q', [b'cwd=', b'debugger'],
|
|
|
... gnu=gnu, keepsep=keepsep)
|
|
|
|
|
|
default parsing rules for early options:
|
|
|
|
|
|
>>> get([b'x', b'--cwd', b'foo', b'-Rbar', b'-q', b'y'], gnu=True)
|
|
|
([('--cwd', 'foo'), ('-R', 'bar'), ('-q', '')], ['x', 'y'])
|
|
|
>>> get([b'x', b'--cwd=foo', b'y', b'-R', b'bar', b'--debugger'], gnu=True)
|
|
|
([('--cwd', 'foo'), ('-R', 'bar'), ('--debugger', '')], ['x', 'y'])
|
|
|
>>> get([b'--unknown', b'--cwd=foo', b'--', '--debugger'], gnu=True)
|
|
|
([('--cwd', 'foo')], ['--unknown', '--debugger'])
|
|
|
|
|
|
restricted parsing rules (early options must come first):
|
|
|
|
|
|
>>> get([b'--cwd', b'foo', b'-Rbar', b'x', b'-q', b'y'], gnu=False)
|
|
|
([('--cwd', 'foo'), ('-R', 'bar')], ['x', '-q', 'y'])
|
|
|
>>> get([b'--cwd=foo', b'x', b'y', b'-R', b'bar', b'--debugger'], gnu=False)
|
|
|
([('--cwd', 'foo')], ['x', 'y', '-R', 'bar', '--debugger'])
|
|
|
>>> get([b'--unknown', b'--cwd=foo', b'--', '--debugger'], gnu=False)
|
|
|
([], ['--unknown', '--cwd=foo', '--', '--debugger'])
|
|
|
|
|
|
stripping early options (without loosing '--'):
|
|
|
|
|
|
>>> get([b'x', b'-Rbar', b'--', '--debugger'], gnu=True, keepsep=True)[1]
|
|
|
['x', '--', '--debugger']
|
|
|
|
|
|
last argument:
|
|
|
|
|
|
>>> get([b'--cwd'])
|
|
|
([], ['--cwd'])
|
|
|
>>> get([b'--cwd=foo'])
|
|
|
([('--cwd', 'foo')], [])
|
|
|
>>> get([b'-R'])
|
|
|
([], ['-R'])
|
|
|
>>> get([b'-Rbar'])
|
|
|
([('-R', 'bar')], [])
|
|
|
>>> get([b'-q'])
|
|
|
([('-q', '')], [])
|
|
|
>>> get([b'-q', b'--'])
|
|
|
([('-q', '')], [])
|
|
|
|
|
|
'--' may be a value:
|
|
|
|
|
|
>>> get([b'-R', b'--', b'x'])
|
|
|
([('-R', '--')], ['x'])
|
|
|
>>> get([b'--cwd', b'--', b'x'])
|
|
|
([('--cwd', '--')], ['x'])
|
|
|
|
|
|
value passed to bool options:
|
|
|
|
|
|
>>> get([b'--debugger=foo', b'x'])
|
|
|
([], ['--debugger=foo', 'x'])
|
|
|
>>> get([b'-qfoo', b'x'])
|
|
|
([], ['-qfoo', 'x'])
|
|
|
|
|
|
short option isn't separated with '=':
|
|
|
|
|
|
>>> get([b'-R=bar'])
|
|
|
([('-R', '=bar')], [])
|
|
|
|
|
|
':' may be in shortlist, but shouldn't be taken as an option letter:
|
|
|
|
|
|
>>> get([b'-:', b'y'])
|
|
|
([], ['-:', 'y'])
|
|
|
|
|
|
'-' is a valid non-option argument:
|
|
|
|
|
|
>>> get([b'-', b'y'])
|
|
|
([], ['-', 'y'])
|
|
|
"""
|
|
|
parsedopts = []
|
|
|
parsedargs = []
|
|
|
pos = 0
|
|
|
while pos < len(args):
|
|
|
arg = args[pos]
|
|
|
if arg == b'--':
|
|
|
pos += not keepsep
|
|
|
break
|
|
|
flag, hasval, val, takeval = _earlyoptarg(arg, shortlist, namelist)
|
|
|
if not hasval and takeval and pos + 1 >= len(args):
|
|
|
# missing last argument
|
|
|
break
|
|
|
if not flag or hasval and not takeval:
|
|
|
# non-option argument or -b/--bool=INVALID_VALUE
|
|
|
if gnu:
|
|
|
parsedargs.append(arg)
|
|
|
pos += 1
|
|
|
else:
|
|
|
break
|
|
|
elif hasval == takeval:
|
|
|
# -b/--bool or -s/--str=VALUE
|
|
|
parsedopts.append((flag, val))
|
|
|
pos += 1
|
|
|
else:
|
|
|
# -s/--str VALUE
|
|
|
parsedopts.append((flag, args[pos + 1]))
|
|
|
pos += 2
|
|
|
|
|
|
parsedargs.extend(args[pos:])
|
|
|
return parsedopts, parsedargs
|
|
|
|
|
|
|
|
|
class customopt(object):
|
|
|
"""Manage defaults and mutations for any type of opt."""
|
|
|
|
|
|
__metaclass__ = abc.ABCMeta
|
|
|
|
|
|
def __init__(self, defaultvalue):
|
|
|
self._defaultvalue = defaultvalue
|
|
|
|
|
|
def _isboolopt(self):
|
|
|
return False
|
|
|
|
|
|
def getdefaultvalue(self):
|
|
|
"""Returns the default value for this opt.
|
|
|
|
|
|
Subclasses should override this to return a new value if the value type
|
|
|
is mutable."""
|
|
|
return self._defaultvalue
|
|
|
|
|
|
@abc.abstractmethod
|
|
|
def newstate(self, oldstate, newparam, abort):
|
|
|
"""Adds newparam to oldstate and returns the new state.
|
|
|
|
|
|
On failure, abort can be called with a string error message."""
|
|
|
|
|
|
|
|
|
class _simpleopt(customopt):
|
|
|
def _isboolopt(self):
|
|
|
return isinstance(self._defaultvalue, (bool, type(None)))
|
|
|
|
|
|
def newstate(self, oldstate, newparam, abort):
|
|
|
return newparam
|
|
|
|
|
|
|
|
|
class _callableopt(customopt):
|
|
|
def __init__(self, callablefn):
|
|
|
self.callablefn = callablefn
|
|
|
super(_callableopt, self).__init__(None)
|
|
|
|
|
|
def newstate(self, oldstate, newparam, abort):
|
|
|
return self.callablefn(newparam)
|
|
|
|
|
|
|
|
|
class _listopt(customopt):
|
|
|
def getdefaultvalue(self):
|
|
|
return self._defaultvalue[:]
|
|
|
|
|
|
def newstate(self, oldstate, newparam, abort):
|
|
|
oldstate.append(newparam)
|
|
|
return oldstate
|
|
|
|
|
|
|
|
|
class _intopt(customopt):
|
|
|
def newstate(self, oldstate, newparam, abort):
|
|
|
try:
|
|
|
return int(newparam)
|
|
|
except ValueError:
|
|
|
abort(_(b'expected int'))
|
|
|
|
|
|
|
|
|
def _defaultopt(default):
|
|
|
"""Returns a default opt implementation, given a default value."""
|
|
|
|
|
|
if isinstance(default, customopt):
|
|
|
return default
|
|
|
elif callable(default):
|
|
|
return _callableopt(default)
|
|
|
elif isinstance(default, list):
|
|
|
return _listopt(default[:])
|
|
|
elif type(default) is type(1):
|
|
|
return _intopt(default)
|
|
|
else:
|
|
|
return _simpleopt(default)
|
|
|
|
|
|
|
|
|
def fancyopts(args, options, state, gnu=False, early=False, optaliases=None):
|
|
|
"""
|
|
|
read args, parse options, and store options in state
|
|
|
|
|
|
each option is a tuple of:
|
|
|
|
|
|
short option or ''
|
|
|
long option
|
|
|
default value
|
|
|
description
|
|
|
option value label(optional)
|
|
|
|
|
|
option types include:
|
|
|
|
|
|
boolean or none - option sets variable in state to true
|
|
|
string - parameter string is stored in state
|
|
|
list - parameter string is added to a list
|
|
|
integer - parameter strings is stored as int
|
|
|
function - call function with parameter
|
|
|
customopt - subclass of 'customopt'
|
|
|
|
|
|
optaliases is a mapping from a canonical option name to a list of
|
|
|
additional long options. This exists for preserving backward compatibility
|
|
|
of early options. If we want to use it extensively, please consider moving
|
|
|
the functionality to the options table (e.g separate long options by '|'.)
|
|
|
|
|
|
non-option args are returned
|
|
|
"""
|
|
|
if optaliases is None:
|
|
|
optaliases = {}
|
|
|
namelist = []
|
|
|
shortlist = b''
|
|
|
argmap = {}
|
|
|
defmap = {}
|
|
|
negations = {}
|
|
|
alllong = set(o[1] for o in options)
|
|
|
|
|
|
for option in options:
|
|
|
if len(option) == 5:
|
|
|
short, name, default, comment, dummy = option
|
|
|
else:
|
|
|
short, name, default, comment = option
|
|
|
# convert opts to getopt format
|
|
|
onames = [name]
|
|
|
onames.extend(optaliases.get(name, []))
|
|
|
name = name.replace(b'-', b'_')
|
|
|
|
|
|
argmap[b'-' + short] = name
|
|
|
for n in onames:
|
|
|
argmap[b'--' + n] = name
|
|
|
defmap[name] = _defaultopt(default)
|
|
|
|
|
|
# copy defaults to state
|
|
|
state[name] = defmap[name].getdefaultvalue()
|
|
|
|
|
|
# does it take a parameter?
|
|
|
if not defmap[name]._isboolopt():
|
|
|
if short:
|
|
|
short += b':'
|
|
|
onames = [n + b'=' for n in onames]
|
|
|
elif name not in nevernegate:
|
|
|
for n in onames:
|
|
|
if n.startswith(b'no-'):
|
|
|
insert = n[3:]
|
|
|
else:
|
|
|
insert = b'no-' + n
|
|
|
# backout (as a practical example) has both --commit and
|
|
|
# --no-commit options, so we don't want to allow the
|
|
|
# negations of those flags.
|
|
|
if insert not in alllong:
|
|
|
assert (b'--' + n) not in negations
|
|
|
negations[b'--' + insert] = b'--' + n
|
|
|
namelist.append(insert)
|
|
|
if short:
|
|
|
shortlist += short
|
|
|
if name:
|
|
|
namelist.extend(onames)
|
|
|
|
|
|
# parse arguments
|
|
|
if early:
|
|
|
parse = functools.partial(earlygetopt, gnu=gnu)
|
|
|
elif gnu:
|
|
|
parse = pycompat.gnugetoptb
|
|
|
else:
|
|
|
parse = pycompat.getoptb
|
|
|
opts, args = parse(args, shortlist, namelist)
|
|
|
|
|
|
# transfer result to state
|
|
|
for opt, val in opts:
|
|
|
boolval = True
|
|
|
negation = negations.get(opt, False)
|
|
|
if negation:
|
|
|
opt = negation
|
|
|
boolval = False
|
|
|
name = argmap[opt]
|
|
|
obj = defmap[name]
|
|
|
if obj._isboolopt():
|
|
|
state[name] = boolval
|
|
|
else:
|
|
|
|
|
|
def abort(s):
|
|
|
raise error.Abort(
|
|
|
_(b'invalid value %r for option %s, %s')
|
|
|
% (pycompat.maybebytestr(val), opt, s)
|
|
|
)
|
|
|
|
|
|
state[name] = defmap[name].newstate(state[name], val, abort)
|
|
|
|
|
|
# return unparsed args
|
|
|
return args
|
|
|
|
