732 lines
20 KiB
C
732 lines
20 KiB
C
/* Getopt for GNU.
|
||
NOTE: getopt is now part of the C library, so if you don't know what
|
||
"Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu
|
||
before changing it!
|
||
|
||
Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
|
||
Free Software Foundation, Inc.
|
||
|
||
This program is free software; you can redistribute it and/or modify it
|
||
under the terms of the GNU General Public License as published by the
|
||
Free Software Foundation; either version 2, or (at your option) any
|
||
later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
/* NOTE!!! AIX requires this to be the first thing in the file.
|
||
Do not put ANYTHING before it! */
|
||
#if !defined (__GNUC__) && defined (_AIX)
|
||
#pragma alloca
|
||
#endif
|
||
|
||
#ifdef HAVE_CONFIG_H
|
||
#include "config.h"
|
||
#endif
|
||
|
||
#ifdef __GNUC__
|
||
#define alloca __builtin_alloca
|
||
#else /* not __GNUC__ */
|
||
#if defined (HAVE_ALLOCA_H) || (defined(sparc) && (defined(sun) || (!defined(USG) && !defined(SVR4) && !defined(__svr4__))))
|
||
#include <alloca.h>
|
||
#else
|
||
#ifndef _AIX
|
||
char *alloca ();
|
||
#endif
|
||
#endif /* alloca.h */
|
||
#endif /* not __GNUC__ */
|
||
|
||
#if !__STDC__ && !defined(const) && IN_GCC
|
||
#define const
|
||
#endif
|
||
|
||
/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. */
|
||
#ifndef _NO_PROTO
|
||
#define _NO_PROTO
|
||
#endif
|
||
|
||
#include <stdio.h>
|
||
|
||
/* Comment out all this code if we are using the GNU C Library, and are not
|
||
actually compiling the library itself. This code is part of the GNU C
|
||
Library, but also included in many other GNU distributions. Compiling
|
||
and linking in this code is a waste when using the GNU C library
|
||
(especially if it is a shared library). Rather than having every GNU
|
||
program understand `configure --with-gnu-libc' and omit the object files,
|
||
it is simpler to just do this in the source for each such file. */
|
||
|
||
#if defined (_LIBC) || !defined (__GNU_LIBRARY__)
|
||
|
||
|
||
/* This needs to come after some library #include
|
||
to get __GNU_LIBRARY__ defined. */
|
||
#ifdef __GNU_LIBRARY__
|
||
#undef alloca
|
||
/* Don't include stdlib.h for non-GNU C libraries because some of them
|
||
contain conflicting prototypes for getopt. */
|
||
#include <stdlib.h>
|
||
#else /* Not GNU C library. */
|
||
#define __alloca alloca
|
||
#endif /* GNU C library. */
|
||
|
||
/* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a
|
||
long-named option. Because this is not POSIX.2 compliant, it is
|
||
being phased out. */
|
||
/* #define GETOPT_COMPAT */
|
||
|
||
/* This version of `getopt' appears to the caller like standard Unix `getopt'
|
||
but it behaves differently for the user, since it allows the user
|
||
to intersperse the options with the other arguments.
|
||
|
||
As `getopt' works, it permutes the elements of ARGV so that,
|
||
when it is done, all the options precede everything else. Thus
|
||
all application programs are extended to handle flexible argument order.
|
||
|
||
Setting the environment variable POSIXLY_CORRECT disables permutation.
|
||
Then the behavior is completely standard.
|
||
|
||
GNU application programs can use a third alternative mode in which
|
||
they can distinguish the relative order of options and other arguments. */
|
||
|
||
#include "getopt.h"
|
||
|
||
/* For communication from `getopt' to the caller.
|
||
When `getopt' finds an option that takes an argument,
|
||
the argument value is returned here.
|
||
Also, when `ordering' is RETURN_IN_ORDER,
|
||
each non-option ARGV-element is returned here. */
|
||
|
||
char *optarg = 0;
|
||
|
||
/* Index in ARGV of the next element to be scanned.
|
||
This is used for communication to and from the caller
|
||
and for communication between successive calls to `getopt'.
|
||
|
||
On entry to `getopt', zero means this is the first call; initialize.
|
||
|
||
When `getopt' returns EOF, this is the index of the first of the
|
||
non-option elements that the caller should itself scan.
|
||
|
||
Otherwise, `optind' communicates from one call to the next
|
||
how much of ARGV has been scanned so far. */
|
||
|
||
/* XXX 1003.2 says this must be 1 before any call. */
|
||
int optind = 0;
|
||
|
||
/* The next char to be scanned in the option-element
|
||
in which the last option character we returned was found.
|
||
This allows us to pick up the scan where we left off.
|
||
|
||
If this is zero, or a null string, it means resume the scan
|
||
by advancing to the next ARGV-element. */
|
||
|
||
static char *nextchar;
|
||
|
||
/* Callers store zero here to inhibit the error message
|
||
for unrecognized options. */
|
||
|
||
int opterr = 1;
|
||
|
||
/* Set to an option character which was unrecognized.
|
||
This must be initialized on some systems to avoid linking in the
|
||
system's own getopt implementation. */
|
||
|
||
int optopt = '?';
|
||
|
||
/* Describe how to deal with options that follow non-option ARGV-elements.
|
||
|
||
If the caller did not specify anything,
|
||
the default is REQUIRE_ORDER if the environment variable
|
||
POSIXLY_CORRECT is defined, PERMUTE otherwise.
|
||
|
||
REQUIRE_ORDER means don't recognize them as options;
|
||
stop option processing when the first non-option is seen.
|
||
This is what Unix does.
|
||
This mode of operation is selected by either setting the environment
|
||
variable POSIXLY_CORRECT, or using `+' as the first character
|
||
of the list of option characters.
|
||
|
||
PERMUTE is the default. We permute the contents of ARGV as we scan,
|
||
so that eventually all the non-options are at the end. This allows options
|
||
to be given in any order, even with programs that were not written to
|
||
expect this.
|
||
|
||
RETURN_IN_ORDER is an option available to programs that were written
|
||
to expect options and other ARGV-elements in any order and that care about
|
||
the ordering of the two. We describe each non-option ARGV-element
|
||
as if it were the argument of an option with character code 1.
|
||
Using `-' as the first character of the list of option characters
|
||
selects this mode of operation.
|
||
|
||
The special argument `--' forces an end of option-scanning regardless
|
||
of the value of `ordering'. In the case of RETURN_IN_ORDER, only
|
||
`--' can cause `getopt' to return EOF with `optind' != ARGC. */
|
||
|
||
static enum
|
||
{
|
||
REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
|
||
} ordering;
|
||
|
||
#ifdef __GNU_LIBRARY__
|
||
/* We want to avoid inclusion of string.h with non-GNU libraries
|
||
because there are many ways it can cause trouble.
|
||
On some systems, it contains special magic macros that don't work
|
||
in GCC. */
|
||
#include <string.h>
|
||
#define my_index strchr
|
||
#define my_bcopy(src, dst, n) memcpy ((dst), (src), (n))
|
||
#else
|
||
|
||
/* Avoid depending on library functions or files
|
||
whose names are inconsistent. */
|
||
|
||
char *getenv ();
|
||
|
||
static char *
|
||
my_index (str, chr)
|
||
const char *str;
|
||
int chr;
|
||
{
|
||
while (*str)
|
||
{
|
||
if (*str == chr)
|
||
return (char *) str;
|
||
str++;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
my_bcopy (from, to, size)
|
||
const char *from;
|
||
char *to;
|
||
int size;
|
||
{
|
||
int i;
|
||
for (i = 0; i < size; i++)
|
||
to[i] = from[i];
|
||
}
|
||
#endif /* GNU C library. */
|
||
|
||
/* Handle permutation of arguments. */
|
||
|
||
/* Describe the part of ARGV that contains non-options that have
|
||
been skipped. `first_nonopt' is the index in ARGV of the first of them;
|
||
`last_nonopt' is the index after the last of them. */
|
||
|
||
static int first_nonopt;
|
||
static int last_nonopt;
|
||
|
||
/* Exchange two adjacent subsequences of ARGV.
|
||
One subsequence is elements [first_nonopt,last_nonopt)
|
||
which contains all the non-options that have been skipped so far.
|
||
The other is elements [last_nonopt,optind), which contains all
|
||
the options processed since those non-options were skipped.
|
||
|
||
`first_nonopt' and `last_nonopt' are relocated so that they describe
|
||
the new indices of the non-options in ARGV after they are moved. */
|
||
|
||
static void
|
||
exchange (argv)
|
||
char **argv;
|
||
{
|
||
int nonopts_size = (last_nonopt - first_nonopt) * sizeof (char *);
|
||
char **temp = (char **) __alloca (nonopts_size);
|
||
|
||
/* Interchange the two blocks of data in ARGV. */
|
||
|
||
my_bcopy ((char *) &argv[first_nonopt], (char *) temp, nonopts_size);
|
||
my_bcopy ((char *) &argv[last_nonopt], (char *) &argv[first_nonopt],
|
||
(optind - last_nonopt) * sizeof (char *));
|
||
my_bcopy ((char *) temp,
|
||
(char *) &argv[first_nonopt + optind - last_nonopt],
|
||
nonopts_size);
|
||
|
||
/* Update records for the slots the non-options now occupy. */
|
||
|
||
first_nonopt += (optind - last_nonopt);
|
||
last_nonopt = optind;
|
||
}
|
||
|
||
/* Scan elements of ARGV (whose length is ARGC) for option characters
|
||
given in OPTSTRING.
|
||
|
||
If an element of ARGV starts with '-', and is not exactly "-" or "--",
|
||
then it is an option element. The characters of this element
|
||
(aside from the initial '-') are option characters. If `getopt'
|
||
is called repeatedly, it returns successively each of the option characters
|
||
from each of the option elements.
|
||
|
||
If `getopt' finds another option character, it returns that character,
|
||
updating `optind' and `nextchar' so that the next call to `getopt' can
|
||
resume the scan with the following option character or ARGV-element.
|
||
|
||
If there are no more option characters, `getopt' returns `EOF'.
|
||
Then `optind' is the index in ARGV of the first ARGV-element
|
||
that is not an option. (The ARGV-elements have been permuted
|
||
so that those that are not options now come last.)
|
||
|
||
OPTSTRING is a string containing the legitimate option characters.
|
||
If an option character is seen that is not listed in OPTSTRING,
|
||
return '?' after printing an error message. If you set `opterr' to
|
||
zero, the error message is suppressed but we still return '?'.
|
||
|
||
If a char in OPTSTRING is followed by a colon, that means it wants an arg,
|
||
so the following text in the same ARGV-element, or the text of the following
|
||
ARGV-element, is returned in `optarg'. Two colons mean an option that
|
||
wants an optional arg; if there is text in the current ARGV-element,
|
||
it is returned in `optarg', otherwise `optarg' is set to zero.
|
||
|
||
If OPTSTRING starts with `-' or `+', it requests different methods of
|
||
handling the non-option ARGV-elements.
|
||
See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
|
||
|
||
Long-named options begin with `--' instead of `-'.
|
||
Their names may be abbreviated as long as the abbreviation is unique
|
||
or is an exact match for some defined option. If they have an
|
||
argument, it follows the option name in the same ARGV-element, separated
|
||
from the option name by a `=', or else the in next ARGV-element.
|
||
When `getopt' finds a long-named option, it returns 0 if that option's
|
||
`flag' field is nonzero, the value of the option's `val' field
|
||
if the `flag' field is zero.
|
||
|
||
The elements of ARGV aren't really const, because we permute them.
|
||
But we pretend they're const in the prototype to be compatible
|
||
with other systems.
|
||
|
||
LONGOPTS is a vector of `struct option' terminated by an
|
||
element containing a name which is zero.
|
||
|
||
LONGIND returns the index in LONGOPT of the long-named option found.
|
||
It is only valid when a long-named option has been found by the most
|
||
recent call.
|
||
|
||
If LONG_ONLY is nonzero, '-' as well as '--' can introduce
|
||
long-named options. */
|
||
|
||
int
|
||
_getopt_internal (argc, argv, optstring, longopts, longind, long_only)
|
||
int argc;
|
||
char *const *argv;
|
||
const char *optstring;
|
||
const struct option *longopts;
|
||
int *longind;
|
||
int long_only;
|
||
{
|
||
int option_index;
|
||
|
||
optarg = 0;
|
||
|
||
/* Initialize the internal data when the first call is made.
|
||
Start processing options with ARGV-element 1 (since ARGV-element 0
|
||
is the program name); the sequence of previously skipped
|
||
non-option ARGV-elements is empty. */
|
||
|
||
if (optind == 0)
|
||
{
|
||
first_nonopt = last_nonopt = optind = 1;
|
||
|
||
nextchar = NULL;
|
||
|
||
/* Determine how to handle the ordering of options and nonoptions. */
|
||
|
||
if (optstring[0] == '-')
|
||
{
|
||
ordering = RETURN_IN_ORDER;
|
||
++optstring;
|
||
}
|
||
else if (optstring[0] == '+')
|
||
{
|
||
ordering = REQUIRE_ORDER;
|
||
++optstring;
|
||
}
|
||
else if (getenv ("POSIXLY_CORRECT") != NULL)
|
||
ordering = REQUIRE_ORDER;
|
||
else
|
||
ordering = PERMUTE;
|
||
}
|
||
|
||
if (nextchar == NULL || *nextchar == '\0')
|
||
{
|
||
if (ordering == PERMUTE)
|
||
{
|
||
/* If we have just processed some options following some non-options,
|
||
exchange them so that the options come first. */
|
||
|
||
if (first_nonopt != last_nonopt && last_nonopt != optind)
|
||
exchange ((char **) argv);
|
||
else if (last_nonopt != optind)
|
||
first_nonopt = optind;
|
||
|
||
/* Now skip any additional non-options
|
||
and extend the range of non-options previously skipped. */
|
||
|
||
while (optind < argc
|
||
&& (argv[optind][0] != '-' || argv[optind][1] == '\0')
|
||
#ifdef GETOPT_COMPAT
|
||
&& (longopts == NULL
|
||
|| argv[optind][0] != '+' || argv[optind][1] == '\0')
|
||
#endif /* GETOPT_COMPAT */
|
||
)
|
||
optind++;
|
||
last_nonopt = optind;
|
||
}
|
||
|
||
/* Special ARGV-element `--' means premature end of options.
|
||
Skip it like a null option,
|
||
then exchange with previous non-options as if it were an option,
|
||
then skip everything else like a non-option. */
|
||
|
||
if (optind != argc && !strcmp (argv[optind], "--"))
|
||
{
|
||
optind++;
|
||
|
||
if (first_nonopt != last_nonopt && last_nonopt != optind)
|
||
exchange ((char **) argv);
|
||
else if (first_nonopt == last_nonopt)
|
||
first_nonopt = optind;
|
||
last_nonopt = argc;
|
||
|
||
optind = argc;
|
||
}
|
||
|
||
/* If we have done all the ARGV-elements, stop the scan
|
||
and back over any non-options that we skipped and permuted. */
|
||
|
||
if (optind == argc)
|
||
{
|
||
/* Set the next-arg-index to point at the non-options
|
||
that we previously skipped, so the caller will digest them. */
|
||
if (first_nonopt != last_nonopt)
|
||
optind = first_nonopt;
|
||
return EOF;
|
||
}
|
||
|
||
/* If we have come to a non-option and did not permute it,
|
||
either stop the scan or describe it to the caller and pass it by. */
|
||
|
||
if ((argv[optind][0] != '-' || argv[optind][1] == '\0')
|
||
#ifdef GETOPT_COMPAT
|
||
&& (longopts == NULL
|
||
|| argv[optind][0] != '+' || argv[optind][1] == '\0')
|
||
#endif /* GETOPT_COMPAT */
|
||
)
|
||
{
|
||
if (ordering == REQUIRE_ORDER)
|
||
return EOF;
|
||
optarg = argv[optind++];
|
||
return 1;
|
||
}
|
||
|
||
/* We have found another option-ARGV-element.
|
||
Start decoding its characters. */
|
||
|
||
nextchar = (argv[optind] + 1
|
||
+ (longopts != NULL && argv[optind][1] == '-'));
|
||
}
|
||
|
||
if (longopts != NULL
|
||
&& ((argv[optind][0] == '-'
|
||
&& (argv[optind][1] == '-' || long_only))
|
||
#ifdef GETOPT_COMPAT
|
||
|| argv[optind][0] == '+'
|
||
#endif /* GETOPT_COMPAT */
|
||
))
|
||
{
|
||
const struct option *p;
|
||
char *s = nextchar;
|
||
int exact = 0;
|
||
int ambig = 0;
|
||
const struct option *pfound = NULL;
|
||
int indfound;
|
||
|
||
while (*s && *s != '=')
|
||
s++;
|
||
|
||
/* Test all options for either exact match or abbreviated matches. */
|
||
for (p = longopts, option_index = 0; p->name;
|
||
p++, option_index++)
|
||
if (!strncmp (p->name, nextchar, s - nextchar))
|
||
{
|
||
if (s - nextchar == strlen (p->name))
|
||
{
|
||
/* Exact match found. */
|
||
pfound = p;
|
||
indfound = option_index;
|
||
exact = 1;
|
||
break;
|
||
}
|
||
else if (pfound == NULL)
|
||
{
|
||
/* First nonexact match found. */
|
||
pfound = p;
|
||
indfound = option_index;
|
||
}
|
||
else
|
||
/* Second nonexact match found. */
|
||
ambig = 1;
|
||
}
|
||
|
||
if (ambig && !exact)
|
||
{
|
||
if (opterr)
|
||
fprintf (stderr, "%s: option `%s' is ambiguous\n",
|
||
argv[0], argv[optind]);
|
||
nextchar += strlen (nextchar);
|
||
optind++;
|
||
return '?';
|
||
}
|
||
|
||
if (pfound != NULL)
|
||
{
|
||
option_index = indfound;
|
||
optind++;
|
||
if (*s)
|
||
{
|
||
/* Don't test has_arg with >, because some C compilers don't
|
||
allow it to be used on enums. */
|
||
if (pfound->has_arg)
|
||
optarg = s + 1;
|
||
else
|
||
{
|
||
if (opterr)
|
||
{
|
||
if (argv[optind - 1][1] == '-')
|
||
/* --option */
|
||
fprintf (stderr,
|
||
"%s: option `--%s' doesn't allow an argument\n",
|
||
argv[0], pfound->name);
|
||
else
|
||
/* +option or -option */
|
||
fprintf (stderr,
|
||
"%s: option `%c%s' doesn't allow an argument\n",
|
||
argv[0], argv[optind - 1][0], pfound->name);
|
||
}
|
||
nextchar += strlen (nextchar);
|
||
return '?';
|
||
}
|
||
}
|
||
else if (pfound->has_arg == 1)
|
||
{
|
||
if (optind < argc)
|
||
optarg = argv[optind++];
|
||
else
|
||
{
|
||
if (opterr)
|
||
fprintf (stderr, "%s: option `%s' requires an argument\n",
|
||
argv[0], argv[optind - 1]);
|
||
nextchar += strlen (nextchar);
|
||
return optstring[0] == ':' ? ':' : '?';
|
||
}
|
||
}
|
||
nextchar += strlen (nextchar);
|
||
if (longind != NULL)
|
||
*longind = option_index;
|
||
if (pfound->flag)
|
||
{
|
||
*(pfound->flag) = pfound->val;
|
||
return 0;
|
||
}
|
||
return pfound->val;
|
||
}
|
||
/* Can't find it as a long option. If this is not getopt_long_only,
|
||
or the option starts with '--' or is not a valid short
|
||
option, then it's an error.
|
||
Otherwise interpret it as a short option. */
|
||
if (!long_only || argv[optind][1] == '-'
|
||
#ifdef GETOPT_COMPAT
|
||
|| argv[optind][0] == '+'
|
||
#endif /* GETOPT_COMPAT */
|
||
|| my_index (optstring, *nextchar) == NULL)
|
||
{
|
||
if (opterr)
|
||
{
|
||
if (argv[optind][1] == '-')
|
||
/* --option */
|
||
fprintf (stderr, "%s: unrecognized option `--%s'\n",
|
||
argv[0], nextchar);
|
||
else
|
||
/* +option or -option */
|
||
fprintf (stderr, "%s: unrecognized option `%c%s'\n",
|
||
argv[0], argv[optind][0], nextchar);
|
||
}
|
||
nextchar = (char *) "";
|
||
optind++;
|
||
return '?';
|
||
}
|
||
}
|
||
|
||
/* Look at and handle the next option-character. */
|
||
|
||
{
|
||
char c = *nextchar++;
|
||
char *temp = my_index (optstring, c);
|
||
|
||
/* Increment `optind' when we start to process its last character. */
|
||
if (*nextchar == '\0')
|
||
++optind;
|
||
|
||
if (temp == NULL || c == ':')
|
||
{
|
||
if (opterr)
|
||
{
|
||
#if 0
|
||
if (c < 040 || c >= 0177)
|
||
fprintf (stderr, "%s: unrecognized option, character code 0%o\n",
|
||
argv[0], c);
|
||
else
|
||
fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c);
|
||
#else
|
||
/* 1003.2 specifies the format of this message. */
|
||
fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c);
|
||
#endif
|
||
}
|
||
optopt = c;
|
||
return '?';
|
||
}
|
||
if (temp[1] == ':')
|
||
{
|
||
if (temp[2] == ':')
|
||
{
|
||
/* This is an option that accepts an argument optionally. */
|
||
if (*nextchar != '\0')
|
||
{
|
||
optarg = nextchar;
|
||
optind++;
|
||
}
|
||
else
|
||
optarg = 0;
|
||
nextchar = NULL;
|
||
}
|
||
else
|
||
{
|
||
/* This is an option that requires an argument. */
|
||
if (*nextchar != '\0')
|
||
{
|
||
optarg = nextchar;
|
||
/* If we end this ARGV-element by taking the rest as an arg,
|
||
we must advance to the next element now. */
|
||
optind++;
|
||
}
|
||
else if (optind == argc)
|
||
{
|
||
if (opterr)
|
||
{
|
||
#if 0
|
||
fprintf (stderr, "%s: option `-%c' requires an argument\n",
|
||
argv[0], c);
|
||
#else
|
||
/* 1003.2 specifies the format of this message. */
|
||
fprintf (stderr, "%s: option requires an argument -- %c\n",
|
||
argv[0], c);
|
||
#endif
|
||
}
|
||
optopt = c;
|
||
if (optstring[0] == ':')
|
||
c = ':';
|
||
else
|
||
c = '?';
|
||
}
|
||
else
|
||
/* We already incremented `optind' once;
|
||
increment it again when taking next ARGV-elt as argument. */
|
||
optarg = argv[optind++];
|
||
nextchar = NULL;
|
||
}
|
||
}
|
||
return c;
|
||
}
|
||
}
|
||
|
||
int
|
||
getopt (argc, argv, optstring)
|
||
int argc;
|
||
char *const *argv;
|
||
const char *optstring;
|
||
{
|
||
return _getopt_internal (argc, argv, optstring,
|
||
(const struct option *) 0,
|
||
(int *) 0,
|
||
0);
|
||
}
|
||
|
||
#endif /* _LIBC or not __GNU_LIBRARY__. */
|
||
|
||
#ifdef TEST
|
||
|
||
/* Compile with -DTEST to make an executable for use in testing
|
||
the above definition of `getopt'. */
|
||
|
||
int
|
||
main (argc, argv)
|
||
int argc;
|
||
char **argv;
|
||
{
|
||
int c;
|
||
int digit_optind = 0;
|
||
|
||
while (1)
|
||
{
|
||
int this_option_optind = optind ? optind : 1;
|
||
|
||
c = getopt (argc, argv, "abc:d:0123456789");
|
||
if (c == EOF)
|
||
break;
|
||
|
||
switch (c)
|
||
{
|
||
case '0':
|
||
case '1':
|
||
case '2':
|
||
case '3':
|
||
case '4':
|
||
case '5':
|
||
case '6':
|
||
case '7':
|
||
case '8':
|
||
case '9':
|
||
if (digit_optind != 0 && digit_optind != this_option_optind)
|
||
printf ("digits occur in two different argv-elements.\n");
|
||
digit_optind = this_option_optind;
|
||
printf ("option %c\n", c);
|
||
break;
|
||
|
||
case 'a':
|
||
printf ("option a\n");
|
||
break;
|
||
|
||
case 'b':
|
||
printf ("option b\n");
|
||
break;
|
||
|
||
case 'c':
|
||
printf ("option c with value `%s'\n", optarg);
|
||
break;
|
||
|
||
case '?':
|
||
break;
|
||
|
||
default:
|
||
printf ("?? getopt returned character code 0%o ??\n", c);
|
||
}
|
||
}
|
||
|
||
if (optind < argc)
|
||
{
|
||
printf ("non-option ARGV-elements: ");
|
||
while (optind < argc)
|
||
printf ("%s ", argv[optind++]);
|
||
printf ("\n");
|
||
}
|
||
|
||
exit (0);
|
||
}
|
||
|
||
#endif /* TEST */
|