1068 lines
30 KiB
C
1068 lines
30 KiB
C
/* Getopt for GNU.
|
||
NOTE: getopt is now part of the C library, so if you don't know what
|
||
"Keep this file name-space clean" means, talk to drepper@gnu.org
|
||
before changing it!
|
||
Copyright (C) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001
|
||
Free Software Foundation, Inc.
|
||
This file is part of the GNU C Library.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2, or (at your option)
|
||
any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
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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 General Public License for more details.
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||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software Foundation,
|
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Inc., 59 Temple Place - Suite 330, Boston, MA 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
|
||
(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 defined HAVE_LIBINTL_H || 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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#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;
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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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/* 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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static int original_argc;
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static char *const *original_argv;
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/* Make sure the environment variable bash 2.0 puts in the environment
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is valid for the getopt call we must make sure that the ARGV passed
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to getopt is that one passed to the process. */
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static void
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__attribute__ ((unused))
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store_args_and_env (int argc, char *const *argv)
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{
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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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original_argc = argc;
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original_argv = argv;
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}
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# ifdef text_set_element
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text_set_element (__libc_subinit, store_args_and_env);
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# endif /* text_set_element */
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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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{
|
||
if (top - middle > middle - bottom)
|
||
{
|
||
/* Bottom segment is the short one. */
|
||
int len = middle - bottom;
|
||
register int i;
|
||
|
||
/* Swap it with the top part of the top segment. */
|
||
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];
|
||
argv[top - (middle - bottom) + i] = tem;
|
||
SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
|
||
}
|
||
/* Exclude the moved bottom segment from further swapping. */
|
||
top -= len;
|
||
}
|
||
else
|
||
{
|
||
/* Top segment is the short one. */
|
||
int len = top - middle;
|
||
register int i;
|
||
|
||
/* Swap it with the bottom part of the bottom segment. */
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
tem = argv[bottom + i];
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||
argv[bottom + i] = argv[middle + i];
|
||
argv[middle + i] = tem;
|
||
SWAP_FLAGS (bottom + i, middle + i);
|
||
}
|
||
/* Exclude the moved top segment from further swapping. */
|
||
bottom += len;
|
||
}
|
||
}
|
||
|
||
/* Update records for the slots the non-options now occupy. */
|
||
|
||
first_nonopt += (optind - last_nonopt);
|
||
last_nonopt = optind;
|
||
}
|
||
|
||
/* Initialize the internal data when the first call is made. */
|
||
|
||
#if defined __STDC__ && __STDC__
|
||
static const char *_getopt_initialize (int, char *const *, const char *);
|
||
#endif
|
||
static const char *
|
||
_getopt_initialize (argc, argv, optstring)
|
||
int argc;
|
||
char *const *argv;
|
||
const char *optstring;
|
||
{
|
||
/* Start processing options with ARGV-element 1 (since ARGV-element 0
|
||
is the program name); the sequence of previously skipped
|
||
non-option ARGV-elements is empty. */
|
||
|
||
first_nonopt = last_nonopt = optind;
|
||
|
||
nextchar = NULL;
|
||
|
||
posixly_correct = getenv ("POSIXLY_CORRECT");
|
||
|
||
/* Determine how to handle the ordering of options and nonoptions. */
|
||
|
||
if (optstring[0] == '-')
|
||
{
|
||
ordering = RETURN_IN_ORDER;
|
||
++optstring;
|
||
}
|
||
else if (optstring[0] == '+')
|
||
{
|
||
ordering = REQUIRE_ORDER;
|
||
++optstring;
|
||
}
|
||
else if (posixly_correct != NULL)
|
||
ordering = REQUIRE_ORDER;
|
||
else
|
||
ordering = PERMUTE;
|
||
|
||
#if defined _LIBC && defined USE_NONOPTION_FLAGS
|
||
if (posixly_correct == NULL
|
||
&& argc == original_argc && argv == original_argv)
|
||
{
|
||
if (nonoption_flags_max_len == 0)
|
||
{
|
||
if (__getopt_nonoption_flags == NULL
|
||
|| __getopt_nonoption_flags[0] == '\0')
|
||
nonoption_flags_max_len = -1;
|
||
else
|
||
{
|
||
const char *orig_str = __getopt_nonoption_flags;
|
||
int len = nonoption_flags_max_len = strlen (orig_str);
|
||
if (nonoption_flags_max_len < argc)
|
||
nonoption_flags_max_len = argc;
|
||
__getopt_nonoption_flags =
|
||
(char *) malloc (nonoption_flags_max_len);
|
||
if (__getopt_nonoption_flags == NULL)
|
||
nonoption_flags_max_len = -1;
|
||
else
|
||
memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
|
||
'\0', nonoption_flags_max_len - len);
|
||
}
|
||
}
|
||
nonoption_flags_len = nonoption_flags_max_len;
|
||
}
|
||
else
|
||
nonoption_flags_len = 0;
|
||
#endif
|
||
|
||
return optstring;
|
||
}
|
||
|
||
/* Scan elements of ARGV (whose length is ARGC) for option characters
|
||
given in OPTSTRING.
|
||
|
||
If an element of ARGV starts with '-', and is not exactly "-" or "--",
|
||
then it is an option element. The characters of this element
|
||
(aside from the initial '-') are option characters. If `getopt'
|
||
is called repeatedly, it returns successively each of the option characters
|
||
from each of the option elements.
|
||
|
||
If `getopt' finds another option character, it returns that character,
|
||
updating `optind' and `nextchar' so that the next call to `getopt' can
|
||
resume the scan with the following option character or ARGV-element.
|
||
|
||
If there are no more option characters, `getopt' returns -1.
|
||
Then `optind' is the index in ARGV of the first ARGV-element
|
||
that is not an option. (The ARGV-elements have been permuted
|
||
so that those that are not options now come last.)
|
||
|
||
OPTSTRING is a string containing the legitimate option characters.
|
||
If an option character is seen that is not listed in OPTSTRING,
|
||
return '?' after printing an error message. If you set `opterr' to
|
||
zero, the error message is suppressed but we still return '?'.
|
||
|
||
If a char in OPTSTRING is followed by a colon, that means it wants an arg,
|
||
so the following text in the same ARGV-element, or the text of the following
|
||
ARGV-element, is returned in `optarg'. Two colons mean an option that
|
||
wants an optional arg; if there is text in the current ARGV-element,
|
||
it is returned in `optarg', otherwise `optarg' is set to zero.
|
||
|
||
If OPTSTRING starts with `-' or `+', it requests different methods of
|
||
handling the non-option ARGV-elements.
|
||
See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
|
||
|
||
Long-named options begin with `--' instead of `-'.
|
||
Their names may be abbreviated as long as the abbreviation is unique
|
||
or is an exact match for some defined option. If they have an
|
||
argument, it follows the option name in the same ARGV-element, separated
|
||
from the option name by a `=', or else the in next ARGV-element.
|
||
When `getopt' finds a long-named option, it returns 0 if that option's
|
||
`flag' field is nonzero, the value of the option's `val' field
|
||
if the `flag' field is zero.
|
||
|
||
The elements of ARGV aren't really const, because we permute them.
|
||
But we pretend they're const in the prototype to be compatible
|
||
with other systems.
|
||
|
||
LONGOPTS is a vector of `struct option' terminated by an
|
||
element containing a name which is zero.
|
||
|
||
LONGIND returns the index in LONGOPT of the long-named option found.
|
||
It is only valid when a long-named option has been found by the most
|
||
recent call.
|
||
|
||
If LONG_ONLY is nonzero, '-' as well as '--' can introduce
|
||
long-named options. */
|
||
|
||
int
|
||
_getopt_internal (argc, argv, optstring, longopts, longind, long_only)
|
||
int argc;
|
||
char *const *argv;
|
||
const char *optstring;
|
||
const struct option *longopts;
|
||
int *longind;
|
||
int long_only;
|
||
{
|
||
int print_errors = opterr;
|
||
if (optstring[0] == ':')
|
||
print_errors = 0;
|
||
|
||
if (argc < 1)
|
||
return -1;
|
||
|
||
optarg = NULL;
|
||
|
||
if (optind == 0 || !__getopt_initialized)
|
||
{
|
||
if (optind == 0)
|
||
optind = 1; /* Don't scan ARGV[0], the program name. */
|
||
optstring = _getopt_initialize (argc, argv, optstring);
|
||
__getopt_initialized = 1;
|
||
}
|
||
|
||
/* Test whether ARGV[optind] points to a non-option argument.
|
||
Either it does not have option syntax, or there is an environment flag
|
||
from the shell indicating it is not an option. The later information
|
||
is only used when the used in the GNU libc. */
|
||
#if defined _LIBC && defined USE_NONOPTION_FLAGS
|
||
# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
|
||
|| (optind < nonoption_flags_len \
|
||
&& __getopt_nonoption_flags[optind] == '1'))
|
||
#else
|
||
# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
|
||
#endif
|
||
|
||
if (nextchar == NULL || *nextchar == '\0')
|
||
{
|
||
/* Advance to the next ARGV-element. */
|
||
|
||
/* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
|
||
moved back by the user (who may also have changed the arguments). */
|
||
if (last_nonopt > optind)
|
||
last_nonopt = optind;
|
||
if (first_nonopt > optind)
|
||
first_nonopt = optind;
|
||
|
||
if (ordering == PERMUTE)
|
||
{
|
||
/* If we have just processed some options following some non-options,
|
||
exchange them so that the options come first. */
|
||
|
||
if (first_nonopt != last_nonopt && last_nonopt != optind)
|
||
exchange ((char **) argv);
|
||
else if (last_nonopt != optind)
|
||
first_nonopt = optind;
|
||
|
||
/* Skip any additional non-options
|
||
and extend the range of non-options previously skipped. */
|
||
|
||
while (optind < argc && NONOPTION_P)
|
||
optind++;
|
||
last_nonopt = optind;
|
||
}
|
||
|
||
/* The special ARGV-element `--' means premature end of options.
|
||
Skip it like a null option,
|
||
then exchange with previous non-options as if it were an option,
|
||
then skip everything else like a non-option. */
|
||
|
||
if (optind != argc && !strcmp (argv[optind], "--"))
|
||
{
|
||
optind++;
|
||
|
||
if (first_nonopt != last_nonopt && last_nonopt != optind)
|
||
exchange ((char **) argv);
|
||
else if (first_nonopt == last_nonopt)
|
||
first_nonopt = optind;
|
||
last_nonopt = argc;
|
||
|
||
optind = argc;
|
||
}
|
||
|
||
/* If we have done all the ARGV-elements, stop the scan
|
||
and back over any non-options that we skipped and permuted. */
|
||
|
||
if (optind == argc)
|
||
{
|
||
/* Set the next-arg-index to point at the non-options
|
||
that we previously skipped, so the caller will digest them. */
|
||
if (first_nonopt != last_nonopt)
|
||
optind = first_nonopt;
|
||
return -1;
|
||
}
|
||
|
||
/* If we have come to a non-option and did not permute it,
|
||
either stop the scan or describe it to the caller and pass it by. */
|
||
|
||
if (NONOPTION_P)
|
||
{
|
||
if (ordering == REQUIRE_ORDER)
|
||
return -1;
|
||
optarg = argv[optind++];
|
||
return 1;
|
||
}
|
||
|
||
/* We have found another option-ARGV-element.
|
||
Skip the initial punctuation. */
|
||
|
||
nextchar = (argv[optind] + 1
|
||
+ (longopts != NULL && argv[optind][1] == '-'));
|
||
}
|
||
|
||
/* Decode the current option-ARGV-element. */
|
||
|
||
/* Check whether the ARGV-element is a long option.
|
||
|
||
If long_only and the ARGV-element has the form "-f", where f is
|
||
a valid short option, don't consider it an abbreviated form of
|
||
a long option that starts with f. Otherwise there would be no
|
||
way to give the -f short option.
|
||
|
||
On the other hand, if there's a long option "fubar" and
|
||
the ARGV-element is "-fu", do consider that an abbreviation of
|
||
the long option, just like "--fu", and not "-f" with arg "u".
|
||
|
||
This distinction seems to be the most useful approach. */
|
||
|
||
if (longopts != NULL
|
||
&& (argv[optind][1] == '-'
|
||
|| (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
|
||
{
|
||
char *nameend;
|
||
const struct option *p;
|
||
const struct option *pfound = NULL;
|
||
int exact = 0;
|
||
int ambig = 0;
|
||
int indfound = -1;
|
||
int option_index;
|
||
|
||
for (nameend = nextchar; *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)
|
||
== (unsigned int) 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 if (long_only
|
||
|| pfound->has_arg != p->has_arg
|
||
|| pfound->flag != p->flag
|
||
|| pfound->val != p->val)
|
||
/* Second or later nonexact match found. */
|
||
ambig = 1;
|
||
}
|
||
|
||
if (ambig && !exact)
|
||
{
|
||
if (print_errors)
|
||
fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
|
||
argv[0], argv[optind]);
|
||
nextchar += strlen (nextchar);
|
||
optind++;
|
||
optopt = 0;
|
||
return '?';
|
||
}
|
||
|
||
if (pfound != NULL)
|
||
{
|
||
option_index = indfound;
|
||
optind++;
|
||
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)
|
||
optarg = nameend + 1;
|
||
else
|
||
{
|
||
if (print_errors)
|
||
{
|
||
if (argv[optind - 1][1] == '-')
|
||
/* --option */
|
||
fprintf (stderr,
|
||
_("%s: option `--%s' doesn't allow an argument\n"),
|
||
argv[0], pfound->name);
|
||
else
|
||
/* +option or -option */
|
||
fprintf (stderr,
|
||
_("%s: option `%c%s' doesn't allow an argument\n"),
|
||
argv[0], argv[optind - 1][0], pfound->name);
|
||
}
|
||
|
||
nextchar += strlen (nextchar);
|
||
|
||
optopt = pfound->val;
|
||
return '?';
|
||
}
|
||
}
|
||
else if (pfound->has_arg == 1)
|
||
{
|
||
if (optind < argc)
|
||
optarg = argv[optind++];
|
||
else
|
||
{
|
||
if (print_errors)
|
||
fprintf (stderr,
|
||
_("%s: option `%s' requires an argument\n"),
|
||
argv[0], argv[optind - 1]);
|
||
nextchar += strlen (nextchar);
|
||
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 getopt_long_only,
|
||
or the option starts with '--' or is not a valid short
|
||
option, then it's an error.
|
||
Otherwise interpret it as a short option. */
|
||
if (!long_only || argv[optind][1] == '-'
|
||
|| my_index (optstring, *nextchar) == NULL)
|
||
{
|
||
if (print_errors)
|
||
{
|
||
if (argv[optind][1] == '-')
|
||
/* --option */
|
||
fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
|
||
argv[0], nextchar);
|
||
else
|
||
/* +option or -option */
|
||
fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
|
||
argv[0], argv[optind][0], nextchar);
|
||
}
|
||
nextchar = (char *) "";
|
||
optind++;
|
||
optopt = 0;
|
||
return '?';
|
||
}
|
||
}
|
||
|
||
/* Look at and handle the next short option-character. */
|
||
|
||
{
|
||
char c = *nextchar++;
|
||
char *temp = my_index (optstring, c);
|
||
|
||
/* Increment `optind' when we start to process its last character. */
|
||
if (*nextchar == '\0')
|
||
++optind;
|
||
|
||
if (temp == NULL || c == ':')
|
||
{
|
||
if (print_errors)
|
||
{
|
||
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);
|
||
}
|
||
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')
|
||
{
|
||
optarg = nextchar;
|
||
/* If we end this ARGV-element by taking the rest as an arg,
|
||
we must advance to the next element now. */
|
||
optind++;
|
||
}
|
||
else if (optind == argc)
|
||
{
|
||
if (print_errors)
|
||
{
|
||
/* 1003.2 specifies the format of this message. */
|
||
fprintf (stderr, _("%s: option requires an argument -- %c\n"),
|
||
argv[0], c);
|
||
}
|
||
optopt = c;
|
||
if (optstring[0] == ':')
|
||
c = ':';
|
||
else
|
||
c = '?';
|
||
return c;
|
||
}
|
||
else
|
||
/* We already incremented `optind' once;
|
||
increment it again when taking next ARGV-elt as argument. */
|
||
optarg = argv[optind++];
|
||
|
||
/* optarg is now the argument, see if it's in the
|
||
table of longopts. */
|
||
|
||
for (nextchar = nameend = 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 (print_errors)
|
||
fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
|
||
argv[0], argv[optind]);
|
||
nextchar += strlen (nextchar);
|
||
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)
|
||
optarg = nameend + 1;
|
||
else
|
||
{
|
||
if (print_errors)
|
||
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 (optind < argc)
|
||
optarg = argv[optind++];
|
||
else
|
||
{
|
||
if (print_errors)
|
||
fprintf (stderr,
|
||
_("%s: option `%s' requires an argument\n"),
|
||
argv[0], argv[optind - 1]);
|
||
nextchar += strlen (nextchar);
|
||
return optstring[0] == ':' ? ':' : '?';
|
||
}
|
||
}
|
||
nextchar += strlen (nextchar);
|
||
if (longind != NULL)
|
||
*longind = option_index;
|
||
if (pfound->flag)
|
||
{
|
||
*(pfound->flag) = pfound->val;
|
||
return 0;
|
||
}
|
||
return pfound->val;
|
||
}
|
||
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')
|
||
{
|
||
optarg = nextchar;
|
||
optind++;
|
||
}
|
||
else
|
||
optarg = NULL;
|
||
nextchar = NULL;
|
||
}
|
||
else
|
||
{
|
||
/* This is an option that requires an argument. */
|
||
if (*nextchar != '\0')
|
||
{
|
||
optarg = nextchar;
|
||
/* If we end this ARGV-element by taking the rest as an arg,
|
||
we must advance to the next element now. */
|
||
optind++;
|
||
}
|
||
else if (optind == argc)
|
||
{
|
||
if (print_errors)
|
||
{
|
||
/* 1003.2 specifies the format of this message. */
|
||
fprintf (stderr,
|
||
_("%s: option requires an argument -- %c\n"),
|
||
argv[0], c);
|
||
}
|
||
optopt = c;
|
||
if (optstring[0] == ':')
|
||
c = ':';
|
||
else
|
||
c = '?';
|
||
}
|
||
else
|
||
/* We already incremented `optind' once;
|
||
increment it again when taking next ARGV-elt as argument. */
|
||
optarg = argv[optind++];
|
||
nextchar = NULL;
|
||
}
|
||
}
|
||
return c;
|
||
}
|
||
}
|
||
|
||
int
|
||
getopt (argc, argv, optstring)
|
||
int argc;
|
||
char *const *argv;
|
||
const char *optstring;
|
||
{
|
||
return _getopt_internal (argc, argv, optstring,
|
||
(const struct option *) 0,
|
||
(int *) 0,
|
||
0);
|
||
}
|
||
|
||
#endif /* Not ELIDE_CODE. */
|
||
|
||
#ifdef TEST
|
||
|
||
/* Compile with -DTEST to make an executable for use in testing
|
||
the above definition of `getopt'. */
|
||
|
||
int
|
||
main (argc, argv)
|
||
int argc;
|
||
char **argv;
|
||
{
|
||
int c;
|
||
int digit_optind = 0;
|
||
|
||
while (1)
|
||
{
|
||
int this_option_optind = optind ? optind : 1;
|
||
|
||
c = getopt (argc, argv, "abc:d:0123456789");
|
||
if (c == -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)
|
||
printf ("digits occur in two different argv-elements.\n");
|
||
digit_optind = this_option_optind;
|
||
printf ("option %c\n", c);
|
||
break;
|
||
|
||
case 'a':
|
||
printf ("option a\n");
|
||
break;
|
||
|
||
case 'b':
|
||
printf ("option b\n");
|
||
break;
|
||
|
||
case 'c':
|
||
printf ("option c with value `%s'\n", optarg);
|
||
break;
|
||
|
||
case '?':
|
||
break;
|
||
|
||
default:
|
||
printf ("?? getopt returned character code 0%o ??\n", c);
|
||
}
|
||
}
|
||
|
||
if (optind < argc)
|
||
{
|
||
printf ("non-option ARGV-elements: ");
|
||
while (optind < argc)
|
||
printf ("%s ", argv[optind++]);
|
||
printf ("\n");
|
||
}
|
||
|
||
exit (0);
|
||
}
|
||
|
||
#endif /* TEST */
|