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files >> //proc/thread-self/root/proc/thread-self/root/proc/thread-self/root/usr/share/awk/getopt.awk
# getopt.awk --- Do C library getopt(3) function in awk # # Arnold Robbins, arnold@skeeve.com, Public Domain # # Initial version: March, 1991 # Revised: May, 1993 # External variables: # Optind -- index in ARGV of first nonoption argument # Optarg -- string value of argument to current option # Opterr -- if nonzero, print our own diagnostic # Optopt -- current option letter # Returns: # -1 at end of options # "?" for unrecognized option # <c> a character representing the current option # Private Data: # _opti -- index in multiflag option, e.g., -abc function getopt(argc, argv, options, thisopt, i) { if (length(options) == 0) # no options given return -1 if (argv[Optind] == "--") { # all done Optind++ _opti = 0 return -1 } else if (argv[Optind] !~ /^-[^:[:space:]]/) { _opti = 0 return -1 } if (_opti == 0) _opti = 2 thisopt = substr(argv[Optind], _opti, 1) Optopt = thisopt i = index(options, thisopt) if (i == 0) { if (Opterr) printf("%c -- invalid option\n", thisopt) > "/dev/stderr" if (_opti >= length(argv[Optind])) { Optind++ _opti = 0 } else _opti++ return "?" } if (substr(options, i + 1, 1) == ":") { # get option argument if (length(substr(argv[Optind], _opti + 1)) > 0) Optarg = substr(argv[Optind], _opti + 1) else Optarg = argv[++Optind] _opti = 0 } else Optarg = "" if (_opti == 0 || _opti >= length(argv[Optind])) { Optind++ _opti = 0 } else _opti++ return thisopt } BEGIN { Opterr = 1 # default is to diagnose Optind = 1 # skip ARGV[0] # test program if (_getopt_test) { while ((_go_c = getopt(ARGC, ARGV, "ab:cd")) != -1) printf("c = <%c>, Optarg = <%s>\n", _go_c, Optarg) printf("non-option arguments:\n") for (; Optind < ARGC; Optind++) printf("\tARGV[%d] = <%s>\n", Optind, ARGV[Optind]) } }
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