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#=======================================================================================================================
# getopt code copied since gnu_getopt is not available on jython 2.1
#=======================================================================================================================
class GetoptError(Exception):
opt = ''
msg = ''
def __init__(self, msg, opt=''):
self.msg = msg
self.opt = opt
Exception.__init__(self, msg, opt)
def __str__(self):
return self.msg
def gnu_getopt(args, shortopts, longopts=[]):
"""getopt(args, options[, long_options]) -> opts, args
This function works like getopt(), except that GNU style scanning
mode is used by default. This means that option and non-option
arguments may be intermixed. The getopt() function stops
processing options as soon as a non-option argument is
encountered.
If the first character of the option string is `+', or if the
environment variable POSIXLY_CORRECT is set, then option
processing stops as soon as a non-option argument is encountered.
"""
opts = []
prog_args = []
if type('') == type(longopts):
longopts = [longopts]
else:
longopts = list(longopts)
# Allow options after non-option arguments?
all_options_first = False
if shortopts.startswith('+'):
shortopts = shortopts[1:]
all_options_first = True
while args:
if args[0] == '--':
prog_args += args[1:]
break
if args[0][:2] == '--':
opts, args = do_longs(opts, args[0][2:], longopts, args[1:])
elif args[0][:1] == '-':
opts, args = do_shorts(opts, args[0][1:], shortopts, args[1:])
else:
if all_options_first:
prog_args += args
break
else:
prog_args.append(args[0])
args = args[1:]
return opts, prog_args
def do_longs(opts, opt, longopts, args):
try:
i = opt.index('=')
except ValueError:
optarg = None
else:
opt, optarg = opt[:i], opt[i + 1:]
has_arg, opt = long_has_args(opt, longopts)
if has_arg:
if optarg is None:
if not args:
raise GetoptError('option --%s requires argument' % opt, opt)
optarg, args = args[0], args[1:]
elif optarg:
raise GetoptError('option --%s must not have an argument' % opt, opt)
opts.append(('--' + opt, optarg or ''))
return opts, args
# Return:
# has_arg?
# full option name
def long_has_args(opt, longopts):
possibilities = [o for o in longopts if o.startswith(opt)]
if not possibilities:
raise GetoptError('option --%s not recognized' % opt, opt)
# Is there an exact match?
if opt in possibilities:
return False, opt
elif opt + '=' in possibilities:
return True, opt
# No exact match, so better be unique.
if len(possibilities) > 1:
# XXX since possibilities contains all valid continuations, might be
# nice to work them into the error msg
raise GetoptError('option --%s not a unique prefix' % opt, opt)
assert len(possibilities) == 1
unique_match = possibilities[0]
has_arg = unique_match.endswith('=')
if has_arg:
unique_match = unique_match[:-1]
return has_arg, unique_match
def do_shorts(opts, optstring, shortopts, args):
while optstring != '':
opt, optstring = optstring[0], optstring[1:]
if short_has_arg(opt, shortopts):
if optstring == '':
if not args:
raise GetoptError('option -%s requires argument' % opt,
opt)
optstring, args = args[0], args[1:]
optarg, optstring = optstring, ''
else:
optarg = ''
opts.append(('-' + opt, optarg))
return opts, args
def short_has_arg(opt, shortopts):
for i in range(len(shortopts)):
if opt == shortopts[i] != ':':
return shortopts.startswith(':', i + 1)
raise GetoptError('option -%s not recognized' % opt, opt)
#=======================================================================================================================
# End getopt code
#=======================================================================================================================
|
