mirror of
https://github.com/python/cpython.git
synced 2025-11-04 11:49:12 +00:00
47 lines
1.7 KiB
Python
47 lines
1.7 KiB
Python
# module getopt -- Standard command line processing.
|
|
|
|
# Function getopt.getopt() has a different interface but provides the
|
|
# same functionality as the Unix getopt() function.
|
|
|
|
# It has two arguments: the first should be argv[1:] (it doesn't want
|
|
# the script name), the second the string of option letters as passed
|
|
# to Unix getopt() (i.e., a string of allowable option letters, with
|
|
# options requiring an argument followed by a colon).
|
|
|
|
# It raises the exception getopt.error with a string argument if it
|
|
# detects an error.
|
|
|
|
# It returns two items:
|
|
# (1) a list of pairs (option, option_argument) giving the options in
|
|
# the order in which they were specified. (I'd use a dictionary
|
|
# but applications may depend on option order or multiple
|
|
# occurrences.) Boolean options have '' as option_argument.
|
|
# (2) the list of remaining arguments (may be empty).
|
|
|
|
error = 'getopt error'
|
|
|
|
def getopt(args, options):
|
|
list = []
|
|
while args and args[0][0] = '-' and args[0] <> '-':
|
|
if args[0] = '--':
|
|
args = args[1:]
|
|
break
|
|
optstring, args = args[0][1:], args[1:]
|
|
while optstring <> '':
|
|
opt, optstring = optstring[0], optstring[1:]
|
|
if classify(opt, options): # May raise exception as well
|
|
if optstring = '':
|
|
if not args:
|
|
raise error, 'option -' + opt + ' requires argument'
|
|
optstring, args = args[0], args[1:]
|
|
optarg, optstring = optstring, ''
|
|
else:
|
|
optarg = ''
|
|
list.append('-' + opt, optarg)
|
|
return list, args
|
|
|
|
def classify(opt, options): # Helper to check type of option
|
|
for i in range(len(options)):
|
|
if opt = options[i] <> ':':
|
|
return options[i+1:i+2] = ':'
|
|
raise error, 'option -' + opt + ' not recognized'
|