~ubuntu-branches/ubuntu/raring/smartmontools/raring : revision 23

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/* Getopt for GNU.

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NOTE: getopt is now part of the C library, so if you don't know what

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"Keep this file name-space clean" means, talk to drepper@gnu.org

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before changing it!

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Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, write to the Free

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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

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02111-1307 USA. */

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/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.

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Ditto for AIX 3.2 and <stdlib.h>. */

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#ifndef _NO_PROTO

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# define _NO_PROTO

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#endif

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#ifdef HAVE_CONFIG_H

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# include <config.h>

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#endif

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#if !defined __STDC__ || !__STDC__

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/* This is a separate conditional since some stdc systems

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reject `defined (const)'. */

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# ifndef const

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# define const

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# endif

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#endif

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#include <stdio.h>

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/* Comment out all this code if we are using the GNU C Library, and are not

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actually compiling the library itself. This code is part of the GNU C

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Library, but also included in many other GNU distributions. Compiling

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and linking in this code is a waste when using the GNU C library

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(especially if it is a shared library). Rather than having every GNU

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program understand `configure --with-gnu-libc' and omit the object files,

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it is simpler to just do this in the source for each such file. */

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#define GETOPT_INTERFACE_VERSION 2

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#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2

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# include <gnu-versions.h>

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# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION

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# define ELIDE_CODE

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# endif

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#endif

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#ifndef ELIDE_CODE

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/* This needs to come after some library #include

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to get __GNU_LIBRARY__ defined. */

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#ifdef __GNU_LIBRARY__

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/* Don't include stdlib.h for non-GNU C libraries because some of them

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contain conflicting prototypes for getopt. */

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# include <stdlib.h>

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# include <unistd.h>

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#endif /* GNU C library. */

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#ifdef VMS

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# include <unixlib.h>

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# if HAVE_STRING_H - 0

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# include <string.h>

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# endif

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#endif

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#ifndef _

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/* This is for other GNU distributions with internationalized messages. */

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# if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC

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# include <libintl.h>

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# ifndef _

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# define _(msgid) gettext (msgid)

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# endif

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# else

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# define _(msgid) (msgid)

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# endif

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# if defined _LIBC && defined USE_IN_LIBIO

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# include <wchar.h>

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# endif

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#endif

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#ifndef attribute_hidden

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# define attribute_hidden

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#endif

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/* This version of `getopt' appears to the caller like standard Unix `getopt'

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but it behaves differently for the user, since it allows the user

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to intersperse the options with the other arguments.

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As `getopt' works, it permutes the elements of ARGV so that,

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when it is done, all the options precede everything else. Thus

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all application programs are extended to handle flexible argument order.

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Setting the environment variable POSIXLY_CORRECT disables permutation.

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Then the behavior is completely standard.

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GNU application programs can use a third alternative mode in which

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they can distinguish the relative order of options and other arguments. */

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#include "getopt.h"

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/* For communication from `getopt' to the caller.

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When `getopt' finds an option that takes an argument,

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the argument value is returned here.

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Also, when `ordering' is RETURN_IN_ORDER,

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each non-option ARGV-element is returned here. */

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char *optarg;

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/* Index in ARGV of the next element to be scanned.

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This is used for communication to and from the caller

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and for communication between successive calls to `getopt'.

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On entry to `getopt', zero means this is the first call; initialize.

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When `getopt' returns -1, this is the index of the first of the

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non-option elements that the caller should itself scan.

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Otherwise, `optind' communicates from one call to the next

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how much of ARGV has been scanned so far. */

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/* 1003.2 says this must be 1 before any call. */

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int optind = 1;

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/* Formerly, initialization of getopt depended on optind==0, which

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causes problems with re-calling getopt as programs generally don't

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know that. */

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int __getopt_initialized attribute_hidden;

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/* The next char to be scanned in the option-element

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in which the last option character we returned was found.

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This allows us to pick up the scan where we left off.

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If this is zero, or a null string, it means resume the scan

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by advancing to the next ARGV-element. */

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static char *nextchar;

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/* Callers store zero here to inhibit the error message

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for unrecognized options. */

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int opterr = 1;

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/* Set to an option character which was unrecognized.

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This must be initialized on some systems to avoid linking in the

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system's own getopt implementation. */

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int optopt = '?';

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/* Describe how to deal with options that follow non-option ARGV-elements.

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If the caller did not specify anything,

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the default is REQUIRE_ORDER if the environment variable

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POSIXLY_CORRECT is defined, PERMUTE otherwise.

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REQUIRE_ORDER means don't recognize them as options;

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stop option processing when the first non-option is seen.

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This is what Unix does.

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This mode of operation is selected by either setting the environment

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variable POSIXLY_CORRECT, or using `+' as the first character

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of the list of option characters.

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PERMUTE is the default. We permute the contents of ARGV as we scan,

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so that eventually all the non-options are at the end. This allows options

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to be given in any order, even with programs that were not written to

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expect this.

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RETURN_IN_ORDER is an option available to programs that were written

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to expect options and other ARGV-elements in any order and that care about

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the ordering of the two. We describe each non-option ARGV-element

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as if it were the argument of an option with character code 1.

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Using `-' as the first character of the list of option characters

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selects this mode of operation.

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The special argument `--' forces an end of option-scanning regardless

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of the value of `ordering'. In the case of RETURN_IN_ORDER, only

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`--' can cause `getopt' to return -1 with `optind' != ARGC. */

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static enum

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{

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REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER

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} ordering;

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/* Value of POSIXLY_CORRECT environment variable. */

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static char *posixly_correct;

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#ifdef __GNU_LIBRARY__

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/* We want to avoid inclusion of string.h with non-GNU libraries

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because there are many ways it can cause trouble.

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On some systems, it contains special magic macros that don't work

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in GCC. */

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# include <string.h>

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# define my_index strchr

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#else

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# if HAVE_STRING_H

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# include <string.h>

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# else

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# include <strings.h>

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# endif

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/* Avoid depending on library functions or files

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whose names are inconsistent. */

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#ifndef getenv

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extern char *getenv ();

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#endif

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static char *

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my_index (str, chr)

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const char *str;

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int chr;

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{

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while (*str)

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{

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if (*str == chr)

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return (char *) str;

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str++;

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}

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return 0;

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}

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/* If using GCC, we can safely declare strlen this way.

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If not using GCC, it is ok not to declare it. */

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#ifdef __GNUC__

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/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.

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That was relevant to code that was here before. */

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# if (!defined __STDC__ || !__STDC__) && !defined strlen

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/* gcc with -traditional declares the built-in strlen to return int,

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and has done so at least since version 2.4.5. -- rms. */

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extern int strlen (const char *);

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# endif /* not __STDC__ */

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#endif /* __GNUC__ */

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#endif /* not __GNU_LIBRARY__ */

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/* Handle permutation of arguments. */

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/* Describe the part of ARGV that contains non-options that have

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been skipped. `first_nonopt' is the index in ARGV of the first of them;

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`last_nonopt' is the index after the last of them. */

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static int first_nonopt;

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static int last_nonopt;

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#ifdef _LIBC

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/* Stored original parameters.

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XXX This is no good solution. We should rather copy the args so

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that we can compare them later. But we must not use malloc(3). */

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extern int __libc_argc;

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extern char **__libc_argv;

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/* Bash 2.0 gives us an environment variable containing flags

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indicating ARGV elements that should not be considered arguments. */

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# ifdef USE_NONOPTION_FLAGS

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/* Defined in getopt_init.c */

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extern char *__getopt_nonoption_flags;

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static int nonoption_flags_max_len;

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static int nonoption_flags_len;

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# endif

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# ifdef USE_NONOPTION_FLAGS

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# define SWAP_FLAGS(ch1, ch2) \

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if (nonoption_flags_len > 0) \

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{ \

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char __tmp = __getopt_nonoption_flags[ch1]; \

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__getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \

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__getopt_nonoption_flags[ch2] = __tmp; \

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}

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# else

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# define SWAP_FLAGS(ch1, ch2)

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# endif

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#else /* !_LIBC */

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# define SWAP_FLAGS(ch1, ch2)

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#endif /* _LIBC */

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/* Exchange two adjacent subsequences of ARGV.

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One subsequence is elements [first_nonopt,last_nonopt)

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which contains all the non-options that have been skipped so far.

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The other is elements [last_nonopt,optind), which contains all

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the options processed since those non-options were skipped.

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`first_nonopt' and `last_nonopt' are relocated so that they describe

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the new indices of the non-options in ARGV after they are moved. */

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#if defined __STDC__ && __STDC__

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static void exchange (char **);

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#endif

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static void

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exchange (argv)

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char **argv;

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{

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int bottom = first_nonopt;

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int middle = last_nonopt;

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int top = optind;

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char *tem;

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/* Exchange the shorter segment with the far end of the longer segment.

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That puts the shorter segment into the right place.

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It leaves the longer segment in the right place overall,

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but it consists of two parts that need to be swapped next. */

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#if defined _LIBC && defined USE_NONOPTION_FLAGS

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/* First make sure the handling of the `__getopt_nonoption_flags'

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string can work normally. Our top argument must be in the range

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of the string. */

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if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)

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{

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/* We must extend the array. The user plays games with us and

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presents new arguments. */

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char *new_str = malloc (top + 1);

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if (new_str == NULL)

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nonoption_flags_len = nonoption_flags_max_len = 0;

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else

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{

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memset (__mempcpy (new_str, __getopt_nonoption_flags,

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nonoption_flags_max_len),

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'\0', top + 1 - nonoption_flags_max_len);

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nonoption_flags_max_len = top + 1;

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__getopt_nonoption_flags = new_str;

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}

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}

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#endif

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while (top > middle && middle > bottom)

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{

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if (top - middle > middle - bottom)

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{

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/* Bottom segment is the short one. */

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int len = middle - bottom;

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register int i;

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/* Swap it with the top part of the top segment. */

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for (i = 0; i < len; i++)

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{

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tem = argv[bottom + i];

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argv[bottom + i] = argv[top - (middle - bottom) + i];

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argv[top - (middle - bottom) + i] = tem;

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SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);

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}

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/* Exclude the moved bottom segment from further swapping. */

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top -= len;

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}

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else

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{

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/* Top segment is the short one. */

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int len = top - middle;

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register int i;

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/* Swap it with the bottom part of the bottom segment. */

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for (i = 0; i < len; i++)

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{

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tem = argv[bottom + i];

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argv[bottom + i] = argv[middle + i];

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argv[middle + i] = tem;

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SWAP_FLAGS (bottom + i, middle + i);

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}

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/* Exclude the moved top segment from further swapping. */

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bottom += len;

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}

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}

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/* Update records for the slots the non-options now occupy. */

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first_nonopt += (optind - last_nonopt);

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last_nonopt = optind;

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}

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/* Initialize the internal data when the first call is made. */

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#if defined __STDC__ && __STDC__

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static const char *_getopt_initialize (int, char *const *, const char *);

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#endif

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static const char *

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_getopt_initialize (argc, argv, optstring)

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int argc;

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char *const *argv;

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const char *optstring;

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{

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/* Start processing options with ARGV-element 1 (since ARGV-element 0

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is the program name); the sequence of previously skipped

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non-option ARGV-elements is empty. */

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first_nonopt = last_nonopt = optind;

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nextchar = NULL;

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posixly_correct = getenv ("POSIXLY_CORRECT");

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/* Determine how to handle the ordering of options and nonoptions. */

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if (optstring[0] == '-')

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{

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ordering = RETURN_IN_ORDER;

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++optstring;

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}

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else if (optstring[0] == '+')

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{

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ordering = REQUIRE_ORDER;

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++optstring;

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}

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else if (posixly_correct != NULL)

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ordering = REQUIRE_ORDER;

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else

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ordering = PERMUTE;

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#if defined _LIBC && defined USE_NONOPTION_FLAGS

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if (posixly_correct == NULL

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&& argc == __libc_argc && argv == __libc_argv)

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{

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if (nonoption_flags_max_len == 0)

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{

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if (__getopt_nonoption_flags == NULL

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|| __getopt_nonoption_flags[0] == '\0')

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nonoption_flags_max_len = -1;

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else

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{

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const char *orig_str = __getopt_nonoption_flags;

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int len = nonoption_flags_max_len = strlen (orig_str);

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if (nonoption_flags_max_len < argc)

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nonoption_flags_max_len = argc;

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__getopt_nonoption_flags =

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(char *) malloc (nonoption_flags_max_len);

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if (__getopt_nonoption_flags == NULL)

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nonoption_flags_max_len = -1;

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else

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memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),

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'\0', nonoption_flags_max_len - len);

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}

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}

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nonoption_flags_len = nonoption_flags_max_len;

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}

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else

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nonoption_flags_len = 0;

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#endif

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return optstring;

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}

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/* Scan elements of ARGV (whose length is ARGC) for option characters

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given in OPTSTRING.

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If an element of ARGV starts with '-', and is not exactly "-" or "--",

460

then it is an option element. The characters of this element

461

(aside from the initial '-') are option characters. If `getopt'

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is called repeatedly, it returns successively each of the option characters

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from each of the option elements.

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If `getopt' finds another option character, it returns that character,

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updating `optind' and `nextchar' so that the next call to `getopt' can

467

resume the scan with the following option character or ARGV-element.

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If there are no more option characters, `getopt' returns -1.

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Then `optind' is the index in ARGV of the first ARGV-element

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that is not an option. (The ARGV-elements have been permuted

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so that those that are not options now come last.)

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OPTSTRING is a string containing the legitimate option characters.

475

If an option character is seen that is not listed in OPTSTRING,

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return '?' after printing an error message. If you set `opterr' to

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zero, the error message is suppressed but we still return '?'.

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If a char in OPTSTRING is followed by a colon, that means it wants an arg,

480

so the following text in the same ARGV-element, or the text of the following

481

ARGV-element, is returned in `optarg'. Two colons mean an option that

482

wants an optional arg; if there is text in the current ARGV-element,

483

it is returned in `optarg', otherwise `optarg' is set to zero.

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If OPTSTRING starts with `-' or `+', it requests different methods of

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handling the non-option ARGV-elements.

487

See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.

488

489

Long-named options begin with `--' instead of `-'.

490

Their names may be abbreviated as long as the abbreviation is unique

491

or is an exact match for some defined option. If they have an

492

argument, it follows the option name in the same ARGV-element, separated

493

from the option name by a `=', or else the in next ARGV-element.

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When `getopt' finds a long-named option, it returns 0 if that option's

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`flag' field is nonzero, the value of the option's `val' field

496

if the `flag' field is zero.

497

498

The elements of ARGV aren't really const, because we permute them.

499

But we pretend they're const in the prototype to be compatible

500

with other systems.

501

502

LONGOPTS is a vector of `struct option' terminated by an

503

element containing a name which is zero.

504

505

LONGIND returns the index in LONGOPT of the long-named option found.

506

It is only valid when a long-named option has been found by the most

507

recent call.

508

509

If LONG_ONLY is nonzero, '-' as well as '--' can introduce

510

long-named options. */

511

512

int

513

_getopt_internal (argc, argv, optstring, longopts, longind, long_only)

514

int argc;

515

char *const *argv;

516

const char *optstring;

517

const struct option *longopts;

518

int *longind;

519

int long_only;

520

{

521

int print_errors = opterr;

522

if (optstring[0] == ':')

523

print_errors = 0;

524

525

if (argc < 1)

526

return -1;

527

528

optarg = NULL;

529

530

if (optind == 0 || !__getopt_initialized)

531

{

532

if (optind == 0)

533

optind = 1; /* Don't scan ARGV[0], the program name. */

534

optstring = _getopt_initialize (argc, argv, optstring);

535

__getopt_initialized = 1;

536

}

537

538

/* Test whether ARGV[optind] points to a non-option argument.

539

Either it does not have option syntax, or there is an environment flag

540

from the shell indicating it is not an option. The later information

541

is only used when the used in the GNU libc. */

542

#if defined _LIBC && defined USE_NONOPTION_FLAGS

543

# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \

544

|| (optind < nonoption_flags_len \

545

&& __getopt_nonoption_flags[optind] == '1'))

546

#else

547

# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')

548

#endif

549

550

if (nextchar == NULL || *nextchar == '\0')

551

{

552

/* Advance to the next ARGV-element. */

553

554

/* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been

555

moved back by the user (who may also have changed the arguments). */

556

if (last_nonopt > optind)

557

last_nonopt = optind;

558

if (first_nonopt > optind)

559

first_nonopt = optind;

560

561

if (ordering == PERMUTE)

562

{

563

/* If we have just processed some options following some non-options,

564

exchange them so that the options come first. */

565

566

if (first_nonopt != last_nonopt && last_nonopt != optind)

567

exchange ((char **) argv);

568

else if (last_nonopt != optind)

569

first_nonopt = optind;

570

571

/* Skip any additional non-options

572

and extend the range of non-options previously skipped. */

573

574

while (optind < argc && NONOPTION_P)

575

optind++;

576

last_nonopt = optind;

577

}

578

579

/* The special ARGV-element `--' means premature end of options.

580

Skip it like a null option,

581

then exchange with previous non-options as if it were an option,

582

then skip everything else like a non-option. */

583

584

if (optind != argc && !strcmp (argv[optind], "--"))

585

{

586

optind++;

587

588

if (first_nonopt != last_nonopt && last_nonopt != optind)

589

exchange ((char **) argv);

590

else if (first_nonopt == last_nonopt)

591

first_nonopt = optind;

592

last_nonopt = argc;

593

594

optind = argc;

595

}

596

597

/* If we have done all the ARGV-elements, stop the scan

598

and back over any non-options that we skipped and permuted. */

599

600

if (optind == argc)

601

{

602

/* Set the next-arg-index to point at the non-options

603

that we previously skipped, so the caller will digest them. */

604

if (first_nonopt != last_nonopt)

605

optind = first_nonopt;

606

return -1;

607

}

608

609

/* If we have come to a non-option and did not permute it,

610

either stop the scan or describe it to the caller and pass it by. */

611

612

if (NONOPTION_P)

613

{

614

if (ordering == REQUIRE_ORDER)

615

return -1;

616

optarg = argv[optind++];

617

return 1;

618

}

619

620

/* We have found another option-ARGV-element.

621

Skip the initial punctuation. */

622

623

nextchar = (argv[optind] + 1

624

+ (longopts != NULL && argv[optind][1] == '-'));

625

}

626

627

/* Decode the current option-ARGV-element. */

628

629

/* Check whether the ARGV-element is a long option.

630

631

If long_only and the ARGV-element has the form "-f", where f is

632

a valid short option, don't consider it an abbreviated form of

633

a long option that starts with f. Otherwise there would be no

634

way to give the -f short option.

635

636

On the other hand, if there's a long option "fubar" and

637

the ARGV-element is "-fu", do consider that an abbreviation of

638

the long option, just like "--fu", and not "-f" with arg "u".

639

640

This distinction seems to be the most useful approach. */

641

642

if (longopts != NULL

643

&& (argv[optind][1] == '-'

644

|| (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))

645

{

646

char *nameend;

647

const struct option *p;

648

const struct option *pfound = NULL;

649

int exact = 0;

650

int ambig = 0;

651

int indfound = -1;

652

int option_index;

653

654

for (nameend = nextchar; *nameend && *nameend != '='; nameend++)

655

/* Do nothing. */ ;

656

657

/* Test all long options for either exact match

658

or abbreviated matches. */

659

for (p = longopts, option_index = 0; p->name; p++, option_index++)

660

if (!strncmp (p->name, nextchar, nameend - nextchar))

661

{

662

if ((unsigned int) (nameend - nextchar)

663

== (unsigned int) strlen (p->name))

664

{

665

/* Exact match found. */

666

pfound = p;

667

indfound = option_index;

668

exact = 1;

669

break;

670

}

671

else if (pfound == NULL)

672

{

673

/* First nonexact match found. */

674

pfound = p;

675

indfound = option_index;

676

}

677

else if (long_only

678

|| pfound->has_arg != p->has_arg

679

|| pfound->flag != p->flag

680

|| pfound->val != p->val)

681

/* Second or later nonexact match found. */

682

ambig = 1;

683

}

684

685

if (ambig && !exact)

686

{

687

if (print_errors)

688

{

689

#if defined _LIBC && defined USE_IN_LIBIO

690

char *buf;

691

692

if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"),

693

argv[0], argv[optind]) >= 0)

694

{

695

696

if (_IO_fwide (stderr, 0) > 0)

697

__fwprintf (stderr, L"%s", buf);

698

else

699

fputs (buf, stderr);

700

701

free (buf);

702

}

703

#else

704

fprintf (stderr, _("%s: option `%s' is ambiguous\n"),

705

argv[0], argv[optind]);

706

#endif

707

}

708

nextchar += strlen (nextchar);

709

optind++;

710

optopt = 0;

711

return '?';

712

}

713

714

if (pfound != NULL)

715

{

716

option_index = indfound;

717

optind++;

718

if (*nameend)

719

{

720

/* Don't test has_arg with >, because some C compilers don't

721

allow it to be used on enums. */

722

if (pfound->has_arg)

723

optarg = nameend + 1;

724

else

725

{

726

if (print_errors)

727

{

728

#if defined _LIBC && defined USE_IN_LIBIO

729

char *buf;

730

int n;

731

#endif

732

733

if (argv[optind - 1][1] == '-')

734

{

735

/* --option */

736

#if defined _LIBC && defined USE_IN_LIBIO

737

n = __asprintf (&buf, _("\

738

%s: option `--%s' doesn't allow an argument\n"),

739

argv[0], pfound->name);

740

#else

741

fprintf (stderr, _("\

742

%s: option `--%s' doesn't allow an argument\n"),

743

argv[0], pfound->name);

744

#endif

745

}

746

else

747

{

748

/* +option or -option */

749

#if defined _LIBC && defined USE_IN_LIBIO

750

n = __asprintf (&buf, _("\

751

%s: option `%c%s' doesn't allow an argument\n"),

752

argv[0], argv[optind - 1][0],

753

pfound->name);

754

#else

755

fprintf (stderr, _("\

756

%s: option `%c%s' doesn't allow an argument\n"),

757

argv[0], argv[optind - 1][0], pfound->name);

758

#endif

759

}

760

761

#if defined _LIBC && defined USE_IN_LIBIO

762

if (n >= 0)

763

{

764

if (_IO_fwide (stderr, 0) > 0)

765

__fwprintf (stderr, L"%s", buf);

766

else

767

fputs (buf, stderr);

768

769

free (buf);

770

}

771

#endif

772

}

773

774

nextchar += strlen (nextchar);

775

776

optopt = pfound->val;

777

return '?';

778

}

779

}

780

else if (pfound->has_arg == 1)

781

{

782

if (optind < argc)

783

optarg = argv[optind++];

784

else

785

{

786

if (print_errors)

787

{

788

#if defined _LIBC && defined USE_IN_LIBIO

789

char *buf;

790

791

if (__asprintf (&buf, _("\

792

%s: option `%s' requires an argument\n"),

793

argv[0], argv[optind - 1]) >= 0)

794

{

795

if (_IO_fwide (stderr, 0) > 0)

796

__fwprintf (stderr, L"%s", buf);

797

else

798

fputs (buf, stderr);

799

800

free (buf);

801

}

802

#else

803

fprintf (stderr,

804

_("%s: option `%s' requires an argument\n"),

805

argv[0], argv[optind - 1]);

806

#endif

807

}

808

nextchar += strlen (nextchar);

809

optopt = pfound->val;

810

return optstring[0] == ':' ? ':' : '?';

811

}

812

}

813

nextchar += strlen (nextchar);

814

if (longind != NULL)

815

*longind = option_index;

816

if (pfound->flag)

817

{

818

*(pfound->flag) = pfound->val;

819

return 0;

820

}

821

return pfound->val;

822

}

823

824

/* Can't find it as a long option. If this is not getopt_long_only,

825

or the option starts with '--' or is not a valid short

826

option, then it's an error.

827

Otherwise interpret it as a short option. */

828

if (!long_only || argv[optind][1] == '-'

829

|| my_index (optstring, *nextchar) == NULL)

830

{

831

if (print_errors)

832

{

833

#if defined _LIBC && defined USE_IN_LIBIO

834

char *buf;

835

int n;

836

#endif

837

838

if (argv[optind][1] == '-')

839

{

840

/* --option */

841

#if defined _LIBC && defined USE_IN_LIBIO

842

n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"),

843

argv[0], nextchar);

844

#else

845

fprintf (stderr, _("%s: unrecognized option `--%s'\n"),

846

argv[0], nextchar);

847

#endif

848

}

849

else

850

{

851

/* +option or -option */

852

#if defined _LIBC && defined USE_IN_LIBIO

853

n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"),

854

argv[0], argv[optind][0], nextchar);

855

#else

856

fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),

857

argv[0], argv[optind][0], nextchar);

858

#endif

859

}

860

861

#if defined _LIBC && defined USE_IN_LIBIO

862

if (n >= 0)

863

{

864

if (_IO_fwide (stderr, 0) > 0)

865

__fwprintf (stderr, L"%s", buf);

866

else

867

fputs (buf, stderr);

868

869

free (buf);

870

}

871

#endif

872

}

873

nextchar = (char *) "";

874

optind++;

875

optopt = 0;

876

return '?';

877

}

878

}

879

880

/* Look at and handle the next short option-character. */

881

882

{

883

char c = *nextchar++;

884

char *temp = my_index (optstring, c);

885

886

/* Increment `optind' when we start to process its last character. */

887

if (*nextchar == '\0')

888

++optind;

889

890

if (temp == NULL || c == ':')

891

{

892

if (print_errors)

893

{

894

#if defined _LIBC && defined USE_IN_LIBIO

895

char *buf;

896

int n;

897

#endif

898

899

if (posixly_correct)

900

{

901

/* 1003.2 specifies the format of this message. */

902

#if defined _LIBC && defined USE_IN_LIBIO

903

n = __asprintf (&buf, _("%s: illegal option -- %c\n"),

904

argv[0], c);

905

#else

906

fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);

907

#endif

908

}

909

else

910

{

911

#if defined _LIBC && defined USE_IN_LIBIO

912

n = __asprintf (&buf, _("%s: invalid option -- %c\n"),

913

argv[0], c);

914

#else

915

fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);

916

#endif

917

}

918

919

#if defined _LIBC && defined USE_IN_LIBIO

920

if (n >= 0)

921

{

922

if (_IO_fwide (stderr, 0) > 0)

923

__fwprintf (stderr, L"%s", buf);

924

else

925

fputs (buf, stderr);

926

927

free (buf);

928

}

929

#endif

930

}

931

optopt = c;

932

return '?';

933

}

934

/* Convenience. Treat POSIX -W foo same as long option --foo */

935

if (temp[0] == 'W' && temp[1] == ';')

936

{

937

char *nameend;

938

const struct option *p;

939

const struct option *pfound = NULL;

940

int exact = 0;

941

int ambig = 0;

942

int indfound = 0;

943

int option_index;

944

945

/* This is an option that requires an argument. */

946

if (*nextchar != '\0')

947

{

948

optarg = nextchar;

949

/* If we end this ARGV-element by taking the rest as an arg,

950

we must advance to the next element now. */

951

optind++;

952

}

953

else if (optind == argc)

954

{

955

if (print_errors)

956

{

957

/* 1003.2 specifies the format of this message. */

958

#if defined _LIBC && defined USE_IN_LIBIO

959

char *buf;

960

961

if (__asprintf (&buf,

962

_("%s: option requires an argument -- %c\n"),

963

argv[0], c) >= 0)

964

{

965

if (_IO_fwide (stderr, 0) > 0)

966

__fwprintf (stderr, L"%s", buf);

967

else

968

fputs (buf, stderr);

969

970

free (buf);

971

}

972

#else

973

fprintf (stderr, _("%s: option requires an argument -- %c\n"),

974

argv[0], c);

975

#endif

976

}

977

optopt = c;

978

if (optstring[0] == ':')

979

c = ':';

980

else

981

c = '?';

982

return c;

983

}

984

else

985

/* We already incremented `optind' once;

986

increment it again when taking next ARGV-elt as argument. */

987

optarg = argv[optind++];

988

989

/* optarg is now the argument, see if it's in the

990

table of longopts. */

991

992

for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)

993

/* Do nothing. */ ;

994

995

/* Test all long options for either exact match

996

or abbreviated matches. */

997

for (p = longopts, option_index = 0; p->name; p++, option_index++)

998

if (!strncmp (p->name, nextchar, nameend - nextchar))

999

{

1000

if ((unsigned int) (nameend - nextchar) == strlen (p->name))

1001

{

1002

/* Exact match found. */

1003

pfound = p;

1004

indfound = option_index;

1005

exact = 1;

1006

break;

1007

}

1008

else if (pfound == NULL)

1009

{

1010

/* First nonexact match found. */

1011

pfound = p;

1012

indfound = option_index;

1013

}

1014

else

1015

/* Second or later nonexact match found. */

1016

ambig = 1;

1017

}

1018

if (ambig && !exact)

1019

{

1020

if (print_errors)

1021

{

1022

#if defined _LIBC && defined USE_IN_LIBIO

1023

char *buf;

1024

1025

if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"),

1026

argv[0], argv[optind]) >= 0)

1027

{

1028

if (_IO_fwide (stderr, 0) > 0)

1029

__fwprintf (stderr, L"%s", buf);

1030

else

1031

fputs (buf, stderr);

1032

1033

free (buf);

1034

}

1035

#else

1036

fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),

1037

argv[0], argv[optind]);

1038

#endif

1039

}

1040

nextchar += strlen (nextchar);

1041

optind++;

1042

return '?';

1043

}

1044

if (pfound != NULL)

1045

{

1046

option_index = indfound;

1047

if (*nameend)

1048

{

1049

/* Don't test has_arg with >, because some C compilers don't

1050

allow it to be used on enums. */

1051

if (pfound->has_arg)

1052

optarg = nameend + 1;

1053

else

1054

{

1055

if (print_errors)

1056

{

1057

#if defined _LIBC && defined USE_IN_LIBIO

1058

char *buf;

1059

1060

if (__asprintf (&buf, _("\

1061

%s: option `-W %s' doesn't allow an argument\n"),

1062

argv[0], pfound->name) >= 0)

1063

{

1064

if (_IO_fwide (stderr, 0) > 0)

1065

__fwprintf (stderr, L"%s", buf);

1066

else

1067

fputs (buf, stderr);

1068

1069

free (buf);

1070

}

1071

#else

1072

fprintf (stderr, _("\

1073

%s: option `-W %s' doesn't allow an argument\n"),

1074

argv[0], pfound->name);

1075

#endif

1076

}

1077

1078

nextchar += strlen (nextchar);

1079

return '?';

1080

}

1081

}

1082

else if (pfound->has_arg == 1)

1083

{

1084

if (optind < argc)

1085

optarg = argv[optind++];

1086

else

1087

{

1088

if (print_errors)

1089

{

1090

#if defined _LIBC && defined USE_IN_LIBIO

1091

char *buf;

1092

1093

if (__asprintf (&buf, _("\

1094

%s: option `%s' requires an argument\n"),

1095

argv[0], argv[optind - 1]) >= 0)

1096

{

1097

if (_IO_fwide (stderr, 0) > 0)

1098

__fwprintf (stderr, L"%s", buf);

1099

else

1100

fputs (buf, stderr);

1101

1102

free (buf);

1103

}

1104

#else

1105

fprintf (stderr,

1106

_("%s: option `%s' requires an argument\n"),

1107

argv[0], argv[optind - 1]);

1108

#endif

1109

}

1110

nextchar += strlen (nextchar);

1111

return optstring[0] == ':' ? ':' : '?';

1112

}

1113

}

1114

nextchar += strlen (nextchar);

1115

if (longind != NULL)

1116

*longind = option_index;

1117

if (pfound->flag)

1118

{

1119

*(pfound->flag) = pfound->val;

1120

return 0;

1121

}

1122

return pfound->val;

1123

}

1124

nextchar = NULL;

1125

return 'W'; /* Let the application handle it. */

1126

}

1127

if (temp[1] == ':')

1128

{

1129

if (temp[2] == ':')

1130

{

1131

/* This is an option that accepts an argument optionally. */

1132

if (*nextchar != '\0')

1133

{

1134

optarg = nextchar;

1135

optind++;

1136

}

1137

else

1138

optarg = NULL;

1139

nextchar = NULL;

1140

}

1141

else

1142

{

1143

/* This is an option that requires an argument. */

1144

if (*nextchar != '\0')

1145

{

1146

optarg = nextchar;

1147

/* If we end this ARGV-element by taking the rest as an arg,

1148

we must advance to the next element now. */

1149

optind++;

1150

}

1151

else if (optind == argc)

1152

{

1153

if (print_errors)

1154

{

1155

/* 1003.2 specifies the format of this message. */

1156

#if defined _LIBC && defined USE_IN_LIBIO

1157

char *buf;

1158

1159

if (__asprintf (&buf, _("\

1160

%s: option requires an argument -- %c\n"),

1161

argv[0], c) >= 0)

1162

{

1163

if (_IO_fwide (stderr, 0) > 0)

1164

__fwprintf (stderr, L"%s", buf);

1165

else

1166

fputs (buf, stderr);

1167

1168

free (buf);

1169

}

1170

#else

1171

fprintf (stderr,

1172

_("%s: option requires an argument -- %c\n"),

1173

argv[0], c);

1174

#endif

1175

}

1176

optopt = c;

1177

if (optstring[0] == ':')

1178

c = ':';

1179

else

1180

c = '?';

1181

}

1182

else

1183

/* We already incremented `optind' once;

1184

increment it again when taking next ARGV-elt as argument. */

1185

optarg = argv[optind++];

1186

nextchar = NULL;

1187

}

1188

}

1189

return c;

1190

}

1191

}

1192

1193

int

1194

getopt (argc, argv, optstring)

1195

int argc;

1196

char *const *argv;

1197

const char *optstring;

1198

{

1199

return _getopt_internal (argc, argv, optstring,

1200

(const struct option *) 0,

1201

(int *) 0,

1202

0);

1203

}

1204

1205

#endif /* Not ELIDE_CODE. */

1206

1207

#ifdef TEST

1208

1209

/* Compile with -DTEST to make an executable for use in testing

1210

the above definition of `getopt'. */

1211

1212

int

1213

main (argc, argv)

1214

int argc;

1215

char **argv;

1216

{

1217

int c;

1218

int digit_optind = 0;

1219

1220

while (1)

1221

{

1222

int this_option_optind = optind ? optind : 1;

1223

1224

c = getopt (argc, argv, "abc:d:0123456789");

1225

if (c == -1)

1226

break;

1227

1228

switch (c)

1229

{

1230

case '0':

1231

case '1':

1232

case '2':

1233

case '3':

1234

case '4':

1235

case '5':

1236

case '6':

1237

case '7':

1238

case '8':

1239

case '9':

1240

if (digit_optind != 0 && digit_optind != this_option_optind)

1241

printf ("digits occur in two different argv-elements.\n");

1242

digit_optind = this_option_optind;

1243

printf ("option %c\n", c);

1244

break;

1245

1246

case 'a':

1247

printf ("option a\n");

1248

break;

1249

1250

case 'b':

1251

printf ("option b\n");

1252

break;

1253

1254

case 'c':

1255

printf ("option c with value `%s'\n", optarg);

1256

break;

1257

1258

case '?':

1259

break;

1260

1261

default:

1262

printf ("?? getopt returned character code 0%o ??\n", c);

1263

}

1264

}

1265

1266

if (optind < argc)

1267

{

1268

printf ("non-option ARGV-elements: ");

1269

while (optind < argc)

1270

printf ("%s ", argv[optind++]);

1271

printf ("\n");

1272

}

1273

1274

exit (0);

1275

}

1276

1277

#endif /* TEST */