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# $Header: /var/local/cvsroot/4Suite/Ft/Lib/CommandLine/FancyGetOpt.py,v 1.6 2004/08/20 23:11:33 mbrown Exp $
"""
Advanced argument & option processing for command-line scripts
Copyright 2004 Fourthought, Inc. (USA).
Detailed license and copyright information: http://4suite.org/COPYRIGHT
Project home, documentation, distributions: http://4suite.org/
"""
import getopt
import CommandLineUtil
def FancyGetopt(cmd, option_table, args):
"""
Parses command line options and parameter list. args is the argument list
to be parsed, without the leading reference to the running program.
Typically, this means "sys.argv[1:]". option_table is an instance of
Ft.Lib.CommandLine.Options.Options. Raises an exception if args contains
syntax errors. Returns a tuple of (options, args) where options is a
dictionary and args is the list of args after the first arg that wasn't
in option_table. Note the options return value is different than what
getopt.getopt() returns.
cmd is an Ft.Lib.CommandLine.Command instance, and is only used
in reporting errors.
"""
short_opts = []
long_opts = []
short2long = {}
takes_arg = {}
# the resulting options
options = {}
for option in option_table:
(short, long) = option.getForGetOpt(short2long, takes_arg)
short_opts.append(short)
long_opts.extend(long)
short_opts = ''.join(short_opts)
try:
(opts, args) = getopt.getopt(args, short_opts, long_opts)
except getopt.error, msg:
raise CommandLineUtil.ArgumentError(cmd, str(msg))
for (opt, val) in opts:
if len(opt) == 2 and opt[0] == '-':
# it's a short option
opt = short2long[opt[1]]
elif len(opt) > 2 and opt[0:2] == '--':
opt = opt[2:]
if not takes_arg[opt]:
# boolean option
val = 1
if options.has_key(opt):
if type(options[opt]) != type([]):
options[opt] = [options[opt]]
options[opt].append(val)
else:
options[opt] = val
return (options, args)
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