819 строки
30 KiB
C
819 строки
30 KiB
C
/* Getopt for GNU.
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NOTE: gnu_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 roland@gnu.ai.mit.edu
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before changing it!
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Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97
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Free Software Foundation, Inc.
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This file is part of the GNU C Library. Its master source is NOT part of
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the C library, however. The master source lives in /gd/gnu/lib.
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/*
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* modified July 9, 1999 by mark gates <mgates@nlanr.net>
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* Dec 17, 1999
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*
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* renamed all functions and variables by prepending "gnu_"
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* removed/redid a bunch of stuff under the assumption we're
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* using a modern standard C compiler.
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* add #include <string.h> here for strncmp(). Originally
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* it was included only under special conditions.
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*
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* $Id: gnu_getopt.c,v 1.1.1.1 2004/05/18 01:50:44 kgibbs Exp $
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#ifndef _MSC_VER /* Visual C++ doesn't have unistd.h */
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#include <unistd.h>
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#endif
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#include <string.h>
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#ifndef _
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/* This is for other GNU distributions with internationalized messages.
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When compiling libc, the _ macro is predefined. */
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#ifdef HAVE_LIBINTL_H
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#include <libintl.h>
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#define _(msgid) gettext (msgid)
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#else
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#define _(msgid) (msgid)
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#endif
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#endif
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/* This version of `gnu_getopt' appears to the caller like standard
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Unix `getopt' but it behaves differently for the user, since it
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allows the user to intersperse the options with the other
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arguments.
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As `gnu_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 "gnu_getopt.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* For communication from `gnu_getopt' to the caller.
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When `gnu_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 *gnu_optarg = NULL;
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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 `gnu_getopt'.
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On entry to `gnu_getopt', zero means this is the first call; initialize.
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When `gnu_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, `gnu_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 gnu_optind = 1;
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/* Formerly, initialization of gnu_getopt depended on gnu_optind==0, which
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causes problems with re-calling gnu_getopt as programs generally don't
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know that. */
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int __gnu_getopt_initialized = 0;
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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 gnu_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 gnu_getopt implementation. */
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int gnu_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 `gnu_getopt' to return -1 with `gnu_optind' != ARGC. */
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static enum {
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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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/* Avoid depending on library functions or files
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whose names are inconsistent. */
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static char *
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my_index( const char* str, int chr ) {
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while ( *str ) {
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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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/* 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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/* 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,gnu_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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static void exchange( char **argv );
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static void
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exchange( char **argv ) {
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int bottom = first_nonopt;
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int middle = last_nonopt;
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int top = gnu_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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while ( top > middle && middle > bottom ) {
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if ( top - middle > middle - bottom ) {
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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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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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}
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/* Exclude the moved bottom segment from further swapping. */
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top -= len;
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} else {
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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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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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}
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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 += (gnu_optind - last_nonopt);
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last_nonopt = gnu_optind;
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}
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/* Initialize the internal data when the first call is made. */
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static const char *
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_gnu_getopt_initialize( int argc,
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char *const * argv,
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const char *optstring );
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static const char *
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_gnu_getopt_initialize( int argc,
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char *const * argv,
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const char *optstring ) {
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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 = gnu_optind = 1;
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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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ordering = RETURN_IN_ORDER;
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++optstring;
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} else if ( optstring[0] == '+' ) {
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ordering = REQUIRE_ORDER;
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++optstring;
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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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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 "--",
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then it is an option element. The characters of this element
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(aside from the initial '-') are option characters. If `gnu_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 `gnu_getopt' finds another option character, it returns that character,
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updating `gnu_optind' and `nextchar' so that the next call to `gnu_getopt' can
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resume the scan with the following option character or ARGV-element.
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If there are no more option characters, `gnu_getopt' returns -1.
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Then `gnu_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.
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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 `gnu_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,
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so the following text in the same ARGV-element, or the text of the following
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ARGV-element, is returned in `gnu_optarg'. Two colons mean an option that
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wants an optional arg; if there is text in the current ARGV-element,
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it is returned in `gnu_optarg', otherwise `gnu_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.
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See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
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Long-named options begin with `--' instead of `-'.
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Their names may be abbreviated as long as the abbreviation is unique
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or is an exact match for some defined option. If they have an
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argument, it follows the option name in the same ARGV-element, separated
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from the option name by a `=', or else the in next ARGV-element.
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When `gnu_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
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if the `flag' field is zero.
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The elements of ARGV aren't really const, because we permute them.
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But we pretend they're const in the prototype to be compatible
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with other systems.
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LONGOPTS is a vector of `struct option' terminated by an
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element containing a name which is zero.
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LONGIND returns the index in LONGOPT of the long-named option found.
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It is only valid when a long-named option has been found by the most
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recent call.
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If LONG_ONLY is nonzero, '-' as well as '--' can introduce
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long-named options. */
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int
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_gnu_getopt_internal( int argc,
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char *const *argv,
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const char *optstring,
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const struct option *longopts,
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int *longind,
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int long_only ) {
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gnu_optarg = NULL;
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if ( !__gnu_getopt_initialized || gnu_optind == 0 ) {
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optstring = _gnu_getopt_initialize (argc, argv, optstring);
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gnu_optind = 1; /* Don't scan ARGV[0], the program name. */
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__gnu_getopt_initialized = 1;
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}
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/* Test whether ARGV[gnu_optind] points to a non-option argument.
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Either it does not have option syntax, or there is an environment flag
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from the shell indicating it is not an option. The later information
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is only used when the used in the GNU libc. */
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#define NONOPTION_P (argv[gnu_optind][0] != '-' || argv[gnu_optind][1] == '\0')
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if ( nextchar == NULL || *nextchar == '\0' ) {
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/* Advance to the next ARGV-element. */
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/* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
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moved back by the user (who may also have changed the arguments). */
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if ( last_nonopt > gnu_optind )
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last_nonopt = gnu_optind;
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if ( first_nonopt > gnu_optind )
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first_nonopt = gnu_optind;
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if ( ordering == PERMUTE ) {
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/* If we have just processed some options following some non-options,
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exchange them so that the options come first. */
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if ( first_nonopt != last_nonopt && last_nonopt != gnu_optind )
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exchange ((char **) argv);
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else if ( last_nonopt != gnu_optind )
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first_nonopt = gnu_optind;
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/* Skip any additional non-options
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and extend the range of non-options previously skipped. */
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while ( gnu_optind < argc && NONOPTION_P )
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gnu_optind++;
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last_nonopt = gnu_optind;
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}
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/* The special ARGV-element `--' means premature end of options.
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Skip it like a null option,
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then exchange with previous non-options as if it were an option,
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then skip everything else like a non-option. */
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if ( gnu_optind != argc && !strcmp (argv[gnu_optind], "--") ) {
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gnu_optind++;
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if ( first_nonopt != last_nonopt && last_nonopt != gnu_optind )
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exchange ((char **) argv);
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else if ( first_nonopt == last_nonopt )
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first_nonopt = gnu_optind;
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last_nonopt = argc;
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gnu_optind = argc;
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}
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/* If we have done all the ARGV-elements, stop the scan
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and back over any non-options that we skipped and permuted. */
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if ( gnu_optind == argc ) {
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/* Set the next-arg-index to point at the non-options
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that we previously skipped, so the caller will digest them. */
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if ( first_nonopt != last_nonopt )
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gnu_optind = first_nonopt;
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return -1;
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}
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/* If we have come to a non-option and did not permute it,
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either stop the scan or describe it to the caller and pass it by. */
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if ( NONOPTION_P ) {
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if ( ordering == REQUIRE_ORDER )
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return -1;
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gnu_optarg = argv[gnu_optind++];
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return 1;
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}
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/* We have found another option-ARGV-element.
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Skip the initial punctuation. */
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nextchar = (argv[gnu_optind] + 1
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+ (longopts != NULL && argv[gnu_optind][1] == '-'));
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}
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/* Decode the current option-ARGV-element. */
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/* Check whether the ARGV-element is a long option.
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If long_only and the ARGV-element has the form "-f", where f is
|
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a valid short option, don't consider it an abbreviated form of
|
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a long option that starts with f. Otherwise there would be no
|
||
way to give the -f short option.
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|
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On the other hand, if there's a long option "fubar" and
|
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the ARGV-element is "-fu", do consider that an abbreviation of
|
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the long option, just like "--fu", and not "-f" with arg "u".
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This distinction seems to be the most useful approach. */
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if ( longopts != NULL
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&& (argv[gnu_optind][1] == '-'
|
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|| (long_only && (argv[gnu_optind][2] || !my_index (optstring, argv[gnu_optind][1])))) ) {
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char *nameend;
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const struct option *p;
|
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const struct option *pfound = NULL;
|
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int exact = 0;
|
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int ambig = 0;
|
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int indfound = -1;
|
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int option_index;
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for ( nameend = nextchar; *nameend && *nameend != '='; nameend++ )
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/* Do nothing. */ ;
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||
|
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/* Test all long options for either exact match
|
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or abbreviated matches. */
|
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for ( p = longopts, option_index = 0; p->name; p++, option_index++ )
|
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if ( !strncmp (p->name, nextchar, nameend - nextchar) ) {
|
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if ( (unsigned int) (nameend - nextchar)
|
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== (unsigned int) strlen (p->name) ) {
|
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/* Exact match found. */
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pfound = p;
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indfound = option_index;
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exact = 1;
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break;
|
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} else if ( pfound == NULL ) {
|
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/* First nonexact match found. */
|
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pfound = p;
|
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indfound = option_index;
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} else
|
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/* Second or later nonexact match found. */
|
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ambig = 1;
|
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}
|
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|
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if ( ambig && !exact ) {
|
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if ( gnu_opterr )
|
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fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
|
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argv[0], argv[gnu_optind]);
|
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nextchar += strlen (nextchar);
|
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gnu_optind++;
|
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gnu_optopt = 0;
|
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return '?';
|
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}
|
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|
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if ( pfound != NULL ) {
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option_index = indfound;
|
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gnu_optind++;
|
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if ( *nameend ) {
|
||
/* Don't test has_arg with >, because some C compilers don't
|
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allow it to be used on enums. */
|
||
if ( pfound->has_arg )
|
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gnu_optarg = nameend + 1;
|
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else {
|
||
if ( gnu_opterr ) {
|
||
if ( argv[gnu_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[gnu_optind - 1][0], pfound->name);
|
||
}
|
||
}
|
||
|
||
nextchar += strlen (nextchar);
|
||
|
||
gnu_optopt = pfound->val;
|
||
return '?';
|
||
}
|
||
} else if ( pfound->has_arg == 1 ) {
|
||
if ( gnu_optind < argc )
|
||
gnu_optarg = argv[gnu_optind++];
|
||
else {
|
||
if ( gnu_opterr )
|
||
fprintf (stderr,
|
||
_("%s: option `%s' requires an argument\n"),
|
||
argv[0], argv[gnu_optind - 1]);
|
||
nextchar += strlen (nextchar);
|
||
gnu_optopt = pfound->val;
|
||
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 gnu_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[gnu_optind][1] == '-'
|
||
|| my_index (optstring, *nextchar) == NULL ) {
|
||
if ( gnu_opterr ) {
|
||
if ( argv[gnu_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[gnu_optind][0], nextchar);
|
||
}
|
||
nextchar = (char *) "";
|
||
gnu_optind++;
|
||
gnu_optopt = 0;
|
||
return '?';
|
||
}
|
||
}
|
||
|
||
/* Look at and handle the next short option-character. */
|
||
|
||
{
|
||
char c = *nextchar++;
|
||
char *temp = my_index (optstring, c);
|
||
|
||
/* Increment `gnu_optind' when we start to process its last character. */
|
||
if ( *nextchar == '\0' )
|
||
++gnu_optind;
|
||
|
||
if ( temp == NULL || c == ':' ) {
|
||
if ( gnu_opterr ) {
|
||
if ( posixly_correct )
|
||
/* 1003.2 specifies the format of this message. */
|
||
fprintf (stderr, _("%s: illegal option -- %c\n"),
|
||
argv[0], c);
|
||
else
|
||
fprintf (stderr, _("%s: invalid option -- %c\n"),
|
||
argv[0], c);
|
||
}
|
||
gnu_optopt = c;
|
||
return '?';
|
||
}
|
||
/* Convenience. Treat POSIX -W foo same as long option --foo */
|
||
if ( temp[0] == 'W' && temp[1] == ';' ) {
|
||
char *nameend;
|
||
const struct option *p;
|
||
const struct option *pfound = NULL;
|
||
int exact = 0;
|
||
int ambig = 0;
|
||
int indfound = 0;
|
||
int option_index;
|
||
|
||
/* This is an option that requires an argument. */
|
||
if ( *nextchar != '\0' ) {
|
||
gnu_optarg = nextchar;
|
||
/* If we end this ARGV-element by taking the rest as an arg,
|
||
we must advance to the next element now. */
|
||
gnu_optind++;
|
||
} else if ( gnu_optind == argc ) {
|
||
if ( gnu_opterr ) {
|
||
/* 1003.2 specifies the format of this message. */
|
||
fprintf (stderr, _("%s: option requires an argument -- %c\n"),
|
||
argv[0], c);
|
||
}
|
||
gnu_optopt = c;
|
||
if ( optstring[0] == ':' )
|
||
c = ':';
|
||
else
|
||
c = '?';
|
||
return c;
|
||
} else
|
||
/* We already incremented `gnu_optind' once;
|
||
increment it again when taking next ARGV-elt as argument. */
|
||
gnu_optarg = argv[gnu_optind++];
|
||
|
||
/* gnu_optarg is now the argument, see if it's in the
|
||
table of longopts. */
|
||
|
||
for ( nextchar = nameend = gnu_optarg; *nameend && *nameend != '='; nameend++ )
|
||
/* Do nothing. */ ;
|
||
|
||
/* Test all long options for either exact match
|
||
or abbreviated matches. */
|
||
for ( p = longopts, option_index = 0; p->name; p++, option_index++ )
|
||
if ( !strncmp (p->name, nextchar, nameend - nextchar) ) {
|
||
if ( (unsigned int) (nameend - 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 or later nonexact match found. */
|
||
ambig = 1;
|
||
}
|
||
if ( ambig && !exact ) {
|
||
if ( gnu_opterr )
|
||
fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
|
||
argv[0], argv[gnu_optind]);
|
||
nextchar += strlen (nextchar);
|
||
gnu_optind++;
|
||
return '?';
|
||
}
|
||
if ( pfound != NULL ) {
|
||
option_index = indfound;
|
||
if ( *nameend ) {
|
||
/* Don't test has_arg with >, because some C compilers don't
|
||
allow it to be used on enums. */
|
||
if ( pfound->has_arg )
|
||
gnu_optarg = nameend + 1;
|
||
else {
|
||
if ( gnu_opterr )
|
||
fprintf (stderr, _("\
|
||
%s: option `-W %s' doesn't allow an argument\n"),
|
||
argv[0], pfound->name);
|
||
|
||
nextchar += strlen (nextchar);
|
||
return '?';
|
||
}
|
||
} else if ( pfound->has_arg == 1 ) {
|
||
if ( gnu_optind < argc )
|
||
gnu_optarg = argv[gnu_optind++];
|
||
else {
|
||
if ( gnu_opterr )
|
||
fprintf (stderr,
|
||
_("%s: option `%s' requires an argument\n"),
|
||
argv[0], argv[gnu_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;
|
||
}
|
||
nextchar = NULL;
|
||
return 'W'; /* Let the application handle it. */
|
||
}
|
||
if ( temp[1] == ':' ) {
|
||
if ( temp[2] == ':' ) {
|
||
/* This is an option that accepts an argument optionally. */
|
||
if ( *nextchar != '\0' ) {
|
||
gnu_optarg = nextchar;
|
||
gnu_optind++;
|
||
} else
|
||
gnu_optarg = NULL;
|
||
nextchar = NULL;
|
||
} else {
|
||
/* This is an option that requires an argument. */
|
||
if ( *nextchar != '\0' ) {
|
||
gnu_optarg = nextchar;
|
||
/* If we end this ARGV-element by taking the rest as an arg,
|
||
we must advance to the next element now. */
|
||
gnu_optind++;
|
||
} else if ( gnu_optind == argc ) {
|
||
if ( gnu_opterr ) {
|
||
/* 1003.2 specifies the format of this message. */
|
||
fprintf (stderr,
|
||
_("%s: option requires an argument -- %c\n"),
|
||
argv[0], c);
|
||
}
|
||
gnu_optopt = c;
|
||
if ( optstring[0] == ':' )
|
||
c = ':';
|
||
else
|
||
c = '?';
|
||
} else
|
||
/* We already incremented `gnu_optind' once;
|
||
increment it again when taking next ARGV-elt as argument. */
|
||
gnu_optarg = argv[gnu_optind++];
|
||
nextchar = NULL;
|
||
}
|
||
}
|
||
return c;
|
||
}
|
||
}
|
||
|
||
int
|
||
gnu_getopt ( int argc,
|
||
char *const *argv,
|
||
const char *optstring ) {
|
||
return _gnu_getopt_internal (argc, argv, optstring,
|
||
(const struct option *) 0,
|
||
(int *) 0,
|
||
0);
|
||
}
|
||
|
||
#ifdef __cplusplus
|
||
} /* end extern "C" */
|
||
#endif
|
||
|
||
|
||
#ifdef TEST
|
||
|
||
/* Compile with -DTEST to make an executable for use in testing
|
||
the above definition of `gnu_getopt'. */
|
||
|
||
int
|
||
main (argc, argv)
|
||
int argc;
|
||
char **argv;
|
||
{
|
||
int c;
|
||
int digit_optind = 0;
|
||
|
||
while ( 1 ) {
|
||
int this_option_optind = gnu_optind ? gnu_optind : 1;
|
||
|
||
c = gnu_getopt (argc, argv, "abc:d:0123456789");
|
||
if ( c == -1 )
|
||
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 )
|
||
fprintf ( stderr, "digits occur in two different argv-elements.\n");
|
||
digit_optind = this_option_optind;
|
||
fprintf ( stderr, "option %c\n", c);
|
||
break;
|
||
|
||
case 'a':
|
||
fprintf ( stderr, "option a\n");
|
||
break;
|
||
|
||
case 'b':
|
||
fprintf ( stderr, "option b\n");
|
||
break;
|
||
|
||
case 'c':
|
||
fprintf ( stderr, "option c with value `%s'\n", gnu_optarg);
|
||
break;
|
||
|
||
case '?':
|
||
break;
|
||
|
||
default:
|
||
fprintf ( stderr, "?? gnu_getopt returned character code 0%o ??\n", c);
|
||
}
|
||
}
|
||
|
||
if ( gnu_optind < argc ) {
|
||
fprintf (stderr, "non-option ARGV-elements: ");
|
||
while ( gnu_optind < argc )
|
||
fprintf ( stderr, "%s ", argv[gnu_optind++]);
|
||
fprintf ( stderr, "\n");
|
||
}
|
||
|
||
exit (0);
|
||
}
|
||
|
||
#endif /* TEST */
|