diff options
Diffstat (limited to 'lib/python2.7/getopt.py')
| -rw-r--r-- | lib/python2.7/getopt.py | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/lib/python2.7/getopt.py b/lib/python2.7/getopt.py deleted file mode 100644 index 251d89c..0000000 --- a/lib/python2.7/getopt.py +++ /dev/null @@ -1,210 +0,0 @@ -"""Parser for command line options. - -This module helps scripts to parse the command line arguments in -sys.argv. It supports the same conventions as the Unix getopt() -function (including the special meanings of arguments of the form `-' -and `--'). Long options similar to those supported by GNU software -may be used as well via an optional third argument. This module -provides two functions and an exception: - -getopt() -- Parse command line options -gnu_getopt() -- Like getopt(), but allow option and non-option arguments -to be intermixed. -GetoptError -- exception (class) raised with 'opt' attribute, which is the -option involved with the exception. -""" - -# Long option support added by Lars Wirzenius <liw@iki.fi>. -# -# Gerrit Holl <gerrit@nl.linux.org> moved the string-based exceptions -# to class-based exceptions. -# -# Peter Astrand <astrand@lysator.liu.se> added gnu_getopt(). -# -# TODO for gnu_getopt(): -# -# - GNU getopt_long_only mechanism -# - allow the caller to specify ordering -# - RETURN_IN_ORDER option -# - GNU extension with '-' as first character of option string -# - optional arguments, specified by double colons -# - a option string with a W followed by semicolon should -# treat "-W foo" as "--foo" - -__all__ = ["GetoptError","error","getopt","gnu_getopt"] - -import os - -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 - -error = GetoptError # backward compatibility - -def getopt(args, shortopts, longopts = []): - """getopt(args, options[, long_options]) -> opts, 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:]". shortopts - is the string of option letters that the script wants to - recognize, with options that require an argument followed by a - colon (i.e., the same format that Unix getopt() uses). If - specified, longopts is a list of strings with the names of the - long options which should be supported. The leading '--' - characters should not be included in the option name. Options - which require an argument should be followed by an equal sign - ('='). - - The return value consists of two elements: the first is a list of - (option, value) pairs; the second is the list of program arguments - left after the option list was stripped (this is a trailing slice - of the first argument). Each option-and-value pair returned has - the option as its first element, prefixed with a hyphen (e.g., - '-x'), and the option argument as its second element, or an empty - string if the option has no argument. The options occur in the - list in the same order in which they were found, thus allowing - multiple occurrences. Long and short options may be mixed. - - """ - - opts = [] - if type(longopts) == type(""): - longopts = [longopts] - else: - longopts = list(longopts) - while args and args[0].startswith('-') and args[0] != '-': - if args[0] == '--': - args = args[1:] - break - if args[0].startswith('--'): - opts, args = do_longs(opts, args[0][2:], longopts, args[1:]) - else: - opts, args = do_shorts(opts, args[0][1:], shortopts, args[1:]) - - return opts, args - -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 isinstance(longopts, str): - longopts = [longopts] - else: - longopts = list(longopts) - - # Allow options after non-option arguments? - if shortopts.startswith('+'): - shortopts = shortopts[1:] - all_options_first = True - elif os.environ.get("POSIXLY_CORRECT"): - all_options_first = True - else: - all_options_first = False - - 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] == '-' and args[0] != '-': - 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 is not None: - 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) - -if __name__ == '__main__': - import sys - print getopt(sys.argv[1:], "a:b", ["alpha=", "beta"]) |