author | Augie Fackler <augie@google.com> |
Mon, 24 Jul 2017 11:19:11 -0400 | |
changeset 33676 | 9f862fe7a8bd |
parent 33103 | db8531c45953 |
child 35169 | 898c6f812a51 |
permissions | -rw-r--r-- |
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# fancyopts.py - better command line parsing |
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# |
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# Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others |
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# |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2 or any later version. |
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from __future__ import absolute_import |
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from .i18n import _ |
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from . import ( |
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error, |
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pycompat, |
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) |
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# Set of flags to not apply boolean negation logic on |
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nevernegate = { |
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# avoid --no-noninteractive |
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'noninteractive', |
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# These two flags are special because they cause hg to do one |
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# thing and then exit, and so aren't suitable for use in things |
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# like aliases anyway. |
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'help', |
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'version', |
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} |
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def gnugetopt(args, options, longoptions): |
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"""Parse options mostly like getopt.gnu_getopt. |
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This is different from getopt.gnu_getopt in that an argument of - will |
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become an argument of - instead of vanishing completely. |
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""" |
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extraargs = [] |
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if '--' in args: |
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stopindex = args.index('--') |
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extraargs = args[stopindex + 1:] |
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args = args[:stopindex] |
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opts, parseargs = pycompat.getoptb(args, options, longoptions) |
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args = [] |
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while parseargs: |
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arg = parseargs.pop(0) |
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if arg and arg[0:1] == '-' and len(arg) > 1: |
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parseargs.insert(0, arg) |
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topts, newparseargs = pycompat.getoptb(parseargs,\ |
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options, longoptions) |
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opts = opts + topts |
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parseargs = newparseargs |
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else: |
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args.append(arg) |
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args.extend(extraargs) |
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return opts, args |
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def fancyopts(args, options, state, gnu=False): |
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""" |
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read args, parse options, and store options in state |
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each option is a tuple of: |
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short option or '' |
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long option |
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default value |
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description |
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option value label(optional) |
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option types include: |
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boolean or none - option sets variable in state to true |
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string - parameter string is stored in state |
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list - parameter string is added to a list |
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integer - parameter strings is stored as int |
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function - call function with parameter |
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non-option args are returned |
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""" |
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namelist = [] |
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shortlist = '' |
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argmap = {} |
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defmap = {} |
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negations = {} |
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alllong = set(o[1] for o in options) |
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for option in options: |
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if len(option) == 5: |
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short, name, default, comment, dummy = option |
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else: |
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short, name, default, comment = option |
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# convert opts to getopt format |
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oname = name |
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name = name.replace('-', '_') |
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argmap['-' + short] = argmap['--' + oname] = name |
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defmap[name] = default |
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# copy defaults to state |
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if isinstance(default, list): |
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state[name] = default[:] |
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elif callable(default): |
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state[name] = None |
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else: |
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state[name] = default |
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# does it take a parameter? |
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if not (default is None or default is True or default is False): |
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if short: |
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short += ':' |
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if oname: |
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oname += '=' |
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elif oname not in nevernegate: |
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if oname.startswith('no-'): |
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insert = oname[3:] |
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else: |
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insert = 'no-' + oname |
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# backout (as a practical example) has both --commit and |
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# --no-commit options, so we don't want to allow the |
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# negations of those flags. |
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if insert not in alllong: |
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assert ('--' + oname) not in negations |
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negations['--' + insert] = '--' + oname |
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namelist.append(insert) |
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if short: |
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shortlist += short |
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if name: |
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namelist.append(oname) |
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125 |
|
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# parse arguments |
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if gnu: |
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parse = gnugetopt |
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else: |
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parse = pycompat.getoptb |
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opts, args = parse(args, shortlist, namelist) |
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132 |
|
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# transfer result to state |
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for opt, val in opts: |
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boolval = True |
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negation = negations.get(opt, False) |
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if negation: |
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opt = negation |
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boolval = False |
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name = argmap[opt] |
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obj = defmap[name] |
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t = type(obj) |
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if callable(obj): |
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state[name] = defmap[name](val) |
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elif t is type(1): |
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try: |
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state[name] = int(val) |
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except ValueError: |
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raise error.Abort(_('invalid value %r for option %s, ' |
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'expected int') % (val, opt)) |
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elif t is type(''): |
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state[name] = val |
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elif t is type([]): |
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state[name].append(val) |
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elif t is type(None) or t is type(False): |
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state[name] = boolval |
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158 |
# return unparsed args |
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159 |
return args |