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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 roland@gnu.ai.mit.edu |
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before changing it! |
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|
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Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 1996 |
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Free Software Foundation, Inc. |
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|
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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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|
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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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|
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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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|
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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 |
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not, write to the Free Software Foundation, Inc., 675 Mass Ave, |
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Cambridge, MA 02139, USA. */ |
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|
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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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|
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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|
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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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|
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#include <stdio.h> |
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|
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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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|
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#if defined (_LIBC) || !defined (__GNU_LIBRARY__) |
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|
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|
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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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|
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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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|
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#if defined (WIN32) && !defined (__CYGWIN32__) |
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/* It's not Unix, really. See? Capital letters. */ |
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#include <windows.h> |
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#define getpid() GetCurrentProcessId() |
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#endif |
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|
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#define _(msgid) (msgid) |
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#define gettext(msgid) (msgid) |
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|
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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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|
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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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|
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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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|
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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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|
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#include "getopt.h" |
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|
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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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|
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char *optarg = NULL; |
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|
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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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|
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On entry to `getopt', zero means this is the first call; initialize. |
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|
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When `getopt' returns EOF, 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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|
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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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|
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/* XXX 1003.2 says this must be 1 before any call. */ |
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int optind = 0; |
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|
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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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|
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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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|
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static char *nextchar; |
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|
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/* Callers store zero here to inhibit the error message |
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for unrecognized options. */ |
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|
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int opterr = 1; |
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|
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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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|
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int optopt = '?'; |
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|
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/* Describe how to deal with options that follow non-option ARGV-elements. |
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|
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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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|
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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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|
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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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|
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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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|
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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 EOF with `optind' != ARGC. */ |
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|
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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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|
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/* Value of POSIXLY_CORRECT environment variable. */ |
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static char *posixly_correct; |
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|
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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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|
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/* Avoid depending on library functions or files |
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whose names are inconsistent. */ |
190 |
|
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char *getenv (); |
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|
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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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|
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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. */ |
209 |
#ifdef __GNUC__ |
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/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. |
211 |
That was relevant to code that was here before. */ |
212 |
#if !defined (__STDC__) || !__STDC__ |
213 |
/* 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. */ |
215 |
extern int strlen (const char *); |
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#endif /* not __STDC__ */ |
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#endif /* __GNUC__ */ |
218 |
|
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#endif /* not __GNU_LIBRARY__ */ |
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|
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/* Handle permutation of arguments. */ |
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|
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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. */ |
226 |
|
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static int first_nonopt; |
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static int last_nonopt; |
229 |
|
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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. */ |
232 |
|
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static const char *nonoption_flags; |
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static int nonoption_flags_len; |
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|
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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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|
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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. */ |
244 |
|
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#if defined (__STDC__) && __STDC__ |
246 |
static void exchange (char **); |
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#endif |
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|
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static void |
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exchange (argv) |
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char **argv; |
252 |
{ |
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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; |
257 |
|
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/* Exchange the shorter segment with the far end of the longer segment. |
259 |
That puts the shorter segment into the right place. |
260 |
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. */ |
262 |
|
263 |
while (top > middle && middle > bottom) |
264 |
{ |
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if (top - middle > middle - bottom) |
266 |
{ |
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/* Bottom segment is the short one. */ |
268 |
int len = middle - bottom; |
269 |
register int i; |
270 |
|
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/* Swap it with the top part of the top segment. */ |
272 |
for (i = 0; i < len; i++) |
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{ |
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tem = argv[bottom + i]; |
275 |
argv[bottom + i] = argv[top - (middle - bottom) + i]; |
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argv[top - (middle - bottom) + i] = tem; |
277 |
} |
278 |
/* Exclude the moved bottom segment from further swapping. */ |
279 |
top -= len; |
280 |
} |
281 |
else |
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{ |
283 |
/* Top segment is the short one. */ |
284 |
int len = top - middle; |
285 |
register int i; |
286 |
|
287 |
/* Swap it with the bottom part of the bottom segment. */ |
288 |
for (i = 0; i < len; i++) |
289 |
{ |
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tem = argv[bottom + i]; |
291 |
argv[bottom + i] = argv[middle + i]; |
292 |
argv[middle + i] = tem; |
293 |
} |
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/* Exclude the moved top segment from further swapping. */ |
295 |
bottom += len; |
296 |
} |
297 |
} |
298 |
|
299 |
/* Update records for the slots the non-options now occupy. */ |
300 |
|
301 |
first_nonopt += (optind - last_nonopt); |
302 |
last_nonopt = optind; |
303 |
} |
304 |
|
305 |
/* Initialize the internal data when the first call is made. */ |
306 |
|
307 |
#if defined (__STDC__) && __STDC__ |
308 |
static const char *_getopt_initialize (const char *); |
309 |
#endif |
310 |
static const char * |
311 |
_getopt_initialize (optstring) |
312 |
const char *optstring; |
313 |
{ |
314 |
/* Start processing options with ARGV-element 1 (since ARGV-element 0 |
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is the program name); the sequence of previously skipped |
316 |
non-option ARGV-elements is empty. */ |
317 |
|
318 |
first_nonopt = last_nonopt = optind = 1; |
319 |
|
320 |
nextchar = NULL; |
321 |
|
322 |
posixly_correct = getenv ("POSIXLY_CORRECT"); |
323 |
|
324 |
/* Determine how to handle the ordering of options and nonoptions. */ |
325 |
|
326 |
if (optstring[0] == '-') |
327 |
{ |
328 |
ordering = RETURN_IN_ORDER; |
329 |
++optstring; |
330 |
} |
331 |
else if (optstring[0] == '+') |
332 |
{ |
333 |
ordering = REQUIRE_ORDER; |
334 |
++optstring; |
335 |
} |
336 |
else if (posixly_correct != NULL) |
337 |
ordering = REQUIRE_ORDER; |
338 |
else |
339 |
ordering = PERMUTE; |
340 |
|
341 |
if (posixly_correct == NULL) |
342 |
{ |
343 |
/* Bash 2.0 puts a special variable in the environment for each |
344 |
command it runs, specifying which ARGV elements are the results of |
345 |
file name wildcard expansion and therefore should not be |
346 |
considered as options. */ |
347 |
char var[100]; |
348 |
sprintf (var, "_%d_GNU_nonoption_argv_flags_", getpid ()); |
349 |
nonoption_flags = getenv (var); |
350 |
if (nonoption_flags == NULL) |
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nonoption_flags_len = 0; |
352 |
else |
353 |
nonoption_flags_len = strlen (nonoption_flags); |
354 |
} |
355 |
|
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return optstring; |
357 |
} |
358 |
|
359 |
/* Scan elements of ARGV (whose length is ARGC) for option characters |
360 |
given in OPTSTRING. |
361 |
|
362 |
If an element of ARGV starts with '-', and is not exactly "-" or "--", |
363 |
then it is an option element. The characters of this element |
364 |
(aside from the initial '-') are option characters. If `getopt' |
365 |
is called repeatedly, it returns successively each of the option characters |
366 |
from each of the option elements. |
367 |
|
368 |
If `getopt' finds another option character, it returns that character, |
369 |
updating `optind' and `nextchar' so that the next call to `getopt' can |
370 |
resume the scan with the following option character or ARGV-element. |
371 |
|
372 |
If there are no more option characters, `getopt' returns `EOF'. |
373 |
Then `optind' is the index in ARGV of the first ARGV-element |
374 |
that is not an option. (The ARGV-elements have been permuted |
375 |
so that those that are not options now come last.) |
376 |
|
377 |
OPTSTRING is a string containing the legitimate option characters. |
378 |
If an option character is seen that is not listed in OPTSTRING, |
379 |
return '?' after printing an error message. If you set `opterr' to |
380 |
zero, the error message is suppressed but we still return '?'. |
381 |
|
382 |
If a char in OPTSTRING is followed by a colon, that means it wants an arg, |
383 |
so the following text in the same ARGV-element, or the text of the following |
384 |
ARGV-element, is returned in `optarg'. Two colons mean an option that |
385 |
wants an optional arg; if there is text in the current ARGV-element, |
386 |
it is returned in `optarg', otherwise `optarg' is set to zero. |
387 |
|
388 |
If OPTSTRING starts with `-' or `+', it requests different methods of |
389 |
handling the non-option ARGV-elements. |
390 |
See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. |
391 |
|
392 |
Long-named options begin with `--' instead of `-'. |
393 |
Their names may be abbreviated as long as the abbreviation is unique |
394 |
or is an exact match for some defined option. If they have an |
395 |
argument, it follows the option name in the same ARGV-element, separated |
396 |
from the option name by a `=', or else the in next ARGV-element. |
397 |
When `getopt' finds a long-named option, it returns 0 if that option's |
398 |
`flag' field is nonzero, the value of the option's `val' field |
399 |
if the `flag' field is zero. |
400 |
|
401 |
The elements of ARGV aren't really const, because we permute them. |
402 |
But we pretend they're const in the prototype to be compatible |
403 |
with other systems. |
404 |
|
405 |
LONGOPTS is a vector of `struct option' terminated by an |
406 |
element containing a name which is zero. |
407 |
|
408 |
LONGIND returns the index in LONGOPT of the long-named option found. |
409 |
It is only valid when a long-named option has been found by the most |
410 |
recent call. |
411 |
|
412 |
If LONG_ONLY is nonzero, '-' as well as '--' can introduce |
413 |
long-named options. */ |
414 |
|
415 |
int |
416 |
_getopt_internal (argc, argv, optstring, longopts, longind, long_only) |
417 |
int argc; |
418 |
char *const *argv; |
419 |
const char *optstring; |
420 |
const struct option *longopts; |
421 |
int *longind; |
422 |
int long_only; |
423 |
{ |
424 |
optarg = NULL; |
425 |
|
426 |
if (optind == 0) |
427 |
{ |
428 |
optstring = _getopt_initialize (optstring); |
429 |
optind = 1; /* Don't scan ARGV[0], the program name. */ |
430 |
} |
431 |
|
432 |
/* Test whether ARGV[optind] points to a non-option argument. |
433 |
Either it does not have option syntax, or there is an environment flag |
434 |
from the shell indicating it is not an option. */ |
435 |
#define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ |
436 |
|| (optind < nonoption_flags_len \ |
437 |
&& nonoption_flags[optind] == '1')) |
438 |
|
439 |
if (nextchar == NULL || *nextchar == '\0') |
440 |
{ |
441 |
/* Advance to the next ARGV-element. */ |
442 |
|
443 |
/* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been |
444 |
moved back by the user (who may also have changed the arguments). */ |
445 |
if (last_nonopt > optind) |
446 |
last_nonopt = optind; |
447 |
if (first_nonopt > optind) |
448 |
first_nonopt = optind; |
449 |
|
450 |
if (ordering == PERMUTE) |
451 |
{ |
452 |
/* If we have just processed some options following some non-options, |
453 |
exchange them so that the options come first. */ |
454 |
|
455 |
if (first_nonopt != last_nonopt && last_nonopt != optind) |
456 |
exchange ((char **) argv); |
457 |
else if (last_nonopt != optind) |
458 |
first_nonopt = optind; |
459 |
|
460 |
/* Skip any additional non-options |
461 |
and extend the range of non-options previously skipped. */ |
462 |
|
463 |
while (optind < argc && NONOPTION_P) |
464 |
optind++; |
465 |
last_nonopt = optind; |
466 |
} |
467 |
|
468 |
/* The special ARGV-element `--' means premature end of options. |
469 |
Skip it like a null option, |
470 |
then exchange with previous non-options as if it were an option, |
471 |
then skip everything else like a non-option. */ |
472 |
|
473 |
if (optind != argc && !strcmp (argv[optind], "--")) |
474 |
{ |
475 |
optind++; |
476 |
|
477 |
if (first_nonopt != last_nonopt && last_nonopt != optind) |
478 |
exchange ((char **) argv); |
479 |
else if (first_nonopt == last_nonopt) |
480 |
first_nonopt = optind; |
481 |
last_nonopt = argc; |
482 |
|
483 |
optind = argc; |
484 |
} |
485 |
|
486 |
/* If we have done all the ARGV-elements, stop the scan |
487 |
and back over any non-options that we skipped and permuted. */ |
488 |
|
489 |
if (optind == argc) |
490 |
{ |
491 |
/* Set the next-arg-index to point at the non-options |
492 |
that we previously skipped, so the caller will digest them. */ |
493 |
if (first_nonopt != last_nonopt) |
494 |
optind = first_nonopt; |
495 |
return EOF; |
496 |
} |
497 |
|
498 |
/* If we have come to a non-option and did not permute it, |
499 |
either stop the scan or describe it to the caller and pass it by. */ |
500 |
|
501 |
if (NONOPTION_P) |
502 |
{ |
503 |
if (ordering == REQUIRE_ORDER) |
504 |
return EOF; |
505 |
optarg = argv[optind++]; |
506 |
return 1; |
507 |
} |
508 |
|
509 |
/* We have found another option-ARGV-element. |
510 |
Skip the initial punctuation. */ |
511 |
|
512 |
nextchar = (argv[optind] + 1 |
513 |
+ (longopts != NULL && argv[optind][1] == '-')); |
514 |
} |
515 |
|
516 |
/* Decode the current option-ARGV-element. */ |
517 |
|
518 |
/* Check whether the ARGV-element is a long option. |
519 |
|
520 |
If long_only and the ARGV-element has the form "-f", where f is |
521 |
a valid short option, don't consider it an abbreviated form of |
522 |
a long option that starts with f. Otherwise there would be no |
523 |
way to give the -f short option. |
524 |
|
525 |
On the other hand, if there's a long option "fubar" and |
526 |
the ARGV-element is "-fu", do consider that an abbreviation of |
527 |
the long option, just like "--fu", and not "-f" with arg "u". |
528 |
|
529 |
This distinction seems to be the most useful approach. */ |
530 |
|
531 |
if (longopts != NULL |
532 |
&& (argv[optind][1] == '-' |
533 |
|| (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) |
534 |
{ |
535 |
char *nameend; |
536 |
const struct option *p; |
537 |
const struct option *pfound = NULL; |
538 |
int exact = 0; |
539 |
int ambig = 0; |
540 |
int indfound = -1; |
541 |
int option_index; |
542 |
|
543 |
for (nameend = nextchar; *nameend && *nameend != '='; nameend++) |
544 |
/* Do nothing. */ ; |
545 |
|
546 |
/* Test all long options for either exact match |
547 |
or abbreviated matches. */ |
548 |
for (p = longopts, option_index = 0; p->name; p++, option_index++) |
549 |
if (!strncmp (p->name, nextchar, nameend - nextchar)) |
550 |
{ |
551 |
if ((unsigned int) (nameend - nextchar) |
552 |
== (unsigned int) strlen (p->name)) |
553 |
{ |
554 |
/* Exact match found. */ |
555 |
pfound = p; |
556 |
indfound = option_index; |
557 |
exact = 1; |
558 |
break; |
559 |
} |
560 |
else if (pfound == NULL) |
561 |
{ |
562 |
/* First nonexact match found. */ |
563 |
pfound = p; |
564 |
indfound = option_index; |
565 |
} |
566 |
else |
567 |
/* Second or later nonexact match found. */ |
568 |
ambig = 1; |
569 |
} |
570 |
|
571 |
if (ambig && !exact) |
572 |
{ |
573 |
if (opterr) |
574 |
fprintf (stderr, _("%s: option `%s' is ambiguous\n"), |
575 |
argv[0], argv[optind]); |
576 |
nextchar += strlen (nextchar); |
577 |
optind++; |
578 |
optopt = 0; |
579 |
return '?'; |
580 |
} |
581 |
|
582 |
if (pfound != NULL) |
583 |
{ |
584 |
option_index = indfound; |
585 |
optind++; |
586 |
if (*nameend) |
587 |
{ |
588 |
/* Don't test has_arg with >, because some C compilers don't |
589 |
allow it to be used on enums. */ |
590 |
if (pfound->has_arg) |
591 |
optarg = nameend + 1; |
592 |
else |
593 |
{ |
594 |
if (opterr) |
595 |
if (argv[optind - 1][1] == '-') |
596 |
/* --option */ |
597 |
fprintf (stderr, |
598 |
_("%s: option `--%s' doesn't allow an argument\n"), |
599 |
argv[0], pfound->name); |
600 |
else |
601 |
/* +option or -option */ |
602 |
fprintf (stderr, |
603 |
_("%s: option `%c%s' doesn't allow an argument\n"), |
604 |
argv[0], argv[optind - 1][0], pfound->name); |
605 |
|
606 |
nextchar += strlen (nextchar); |
607 |
|
608 |
optopt = pfound->val; |
609 |
return '?'; |
610 |
} |
611 |
} |
612 |
else if (pfound->has_arg == 1) |
613 |
{ |
614 |
if (optind < argc) |
615 |
optarg = argv[optind++]; |
616 |
else |
617 |
{ |
618 |
if (opterr) |
619 |
fprintf (stderr, |
620 |
_("%s: option `%s' requires an argument\n"), |
621 |
argv[0], argv[optind - 1]); |
622 |
nextchar += strlen (nextchar); |
623 |
optopt = pfound->val; |
624 |
return optstring[0] == ':' ? ':' : '?'; |
625 |
} |
626 |
} |
627 |
nextchar += strlen (nextchar); |
628 |
if (longind != NULL) |
629 |
*longind = option_index; |
630 |
if (pfound->flag) |
631 |
{ |
632 |
*(pfound->flag) = pfound->val; |
633 |
return 0; |
634 |
} |
635 |
return pfound->val; |
636 |
} |
637 |
|
638 |
/* Can't find it as a long option. If this is not getopt_long_only, |
639 |
or the option starts with '--' or is not a valid short |
640 |
option, then it's an error. |
641 |
Otherwise interpret it as a short option. */ |
642 |
if (!long_only || argv[optind][1] == '-' |
643 |
|| my_index (optstring, *nextchar) == NULL) |
644 |
{ |
645 |
if (opterr) |
646 |
{ |
647 |
if (argv[optind][1] == '-') |
648 |
/* --option */ |
649 |
fprintf (stderr, _("%s: unrecognized option `--%s'\n"), |
650 |
argv[0], nextchar); |
651 |
else |
652 |
/* +option or -option */ |
653 |
fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), |
654 |
argv[0], argv[optind][0], nextchar); |
655 |
} |
656 |
nextchar = (char *) ""; |
657 |
optind++; |
658 |
optopt = 0; |
659 |
return '?'; |
660 |
} |
661 |
} |
662 |
|
663 |
/* Look at and handle the next short option-character. */ |
664 |
|
665 |
{ |
666 |
char c = *nextchar++; |
667 |
char *temp = my_index (optstring, c); |
668 |
|
669 |
/* Increment `optind' when we start to process its last character. */ |
670 |
if (*nextchar == '\0') |
671 |
++optind; |
672 |
|
673 |
if (temp == NULL || c == ':') |
674 |
{ |
675 |
if (opterr) |
676 |
{ |
677 |
if (posixly_correct) |
678 |
/* 1003.2 specifies the format of this message. */ |
679 |
fprintf (stderr, _("%s: illegal option -- %c\n"), |
680 |
argv[0], c); |
681 |
else |
682 |
fprintf (stderr, _("%s: invalid option -- %c\n"), |
683 |
argv[0], c); |
684 |
} |
685 |
optopt = c; |
686 |
return '?'; |
687 |
} |
688 |
/* Convenience. Treat POSIX -W foo same as long option --foo */ |
689 |
if (temp[0] == 'W' && temp[1] == ';') |
690 |
{ |
691 |
char *nameend; |
692 |
const struct option *p; |
693 |
const struct option *pfound = NULL; |
694 |
int exact = 0; |
695 |
int ambig = 0; |
696 |
int indfound = 0; |
697 |
int option_index; |
698 |
|
699 |
/* This is an option that requires an argument. */ |
700 |
if (*nextchar != '\0') |
701 |
{ |
702 |
optarg = nextchar; |
703 |
/* If we end this ARGV-element by taking the rest as an arg, |
704 |
we must advance to the next element now. */ |
705 |
optind++; |
706 |
} |
707 |
else if (optind == argc) |
708 |
{ |
709 |
if (opterr) |
710 |
{ |
711 |
/* 1003.2 specifies the format of this message. */ |
712 |
fprintf (stderr, |
713 |
gettext ("%s: option requires an argument -- %c\n"), |
714 |
argv[0], c); |
715 |
} |
716 |
optopt = c; |
717 |
if (optstring[0] == ':') |
718 |
c = ':'; |
719 |
else |
720 |
c = '?'; |
721 |
} |
722 |
else |
723 |
/* We already incremented `optind' once; |
724 |
increment it again when taking next ARGV-elt as argument. */ |
725 |
optarg = argv[optind++]; |
726 |
|
727 |
/* optarg is now the argument, see if it's in the |
728 |
table of longopts. */ |
729 |
|
730 |
for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) |
731 |
/* Do nothing. */ ; |
732 |
|
733 |
/* Test all long options for either exact match |
734 |
or abbreviated matches. */ |
735 |
for (p = longopts, option_index = 0; p->name; p++, option_index++) |
736 |
if (!strncmp (p->name, nextchar, nameend - nextchar)) |
737 |
{ |
738 |
if ((unsigned int) (nameend - nextchar) == strlen (p->name)) |
739 |
{ |
740 |
/* Exact match found. */ |
741 |
pfound = p; |
742 |
indfound = option_index; |
743 |
exact = 1; |
744 |
break; |
745 |
} |
746 |
else if (pfound == NULL) |
747 |
{ |
748 |
/* First nonexact match found. */ |
749 |
pfound = p; |
750 |
indfound = option_index; |
751 |
} |
752 |
else |
753 |
/* Second or later nonexact match found. */ |
754 |
ambig = 1; |
755 |
} |
756 |
if (ambig && !exact) |
757 |
{ |
758 |
if (opterr) |
759 |
fprintf (stderr, gettext ("%s: option `-W %s' is ambiguous\n"), |
760 |
argv[0], argv[optind]); |
761 |
nextchar += strlen (nextchar); |
762 |
optind++; |
763 |
return '?'; |
764 |
} |
765 |
if (pfound != NULL) |
766 |
{ |
767 |
option_index = indfound; |
768 |
if (*nameend) |
769 |
{ |
770 |
/* Don't test has_arg with >, because some C compilers don't |
771 |
allow it to be used on enums. */ |
772 |
if (pfound->has_arg) |
773 |
optarg = nameend + 1; |
774 |
else |
775 |
{ |
776 |
if (opterr) |
777 |
fprintf (stderr, |
778 |
gettext ("%s: option `-W %s' doesn't allow an argument\n"), |
779 |
argv[0], pfound->name); |
780 |
|
781 |
nextchar += strlen (nextchar); |
782 |
return '?'; |
783 |
} |
784 |
} |
785 |
else if (pfound->has_arg == 1) |
786 |
{ |
787 |
if (optind < argc) |
788 |
optarg = argv[optind++]; |
789 |
else |
790 |
{ |
791 |
if (opterr) |
792 |
fprintf (stderr, |
793 |
gettext ("%s: option `%s' requires an argument\n"), |
794 |
argv[0], argv[optind - 1]); |
795 |
nextchar += strlen (nextchar); |
796 |
return optstring[0] == ':' ? ':' : '?'; |
797 |
} |
798 |
} |
799 |
nextchar += strlen (nextchar); |
800 |
if (longind != NULL) |
801 |
*longind = option_index; |
802 |
if (pfound->flag) |
803 |
{ |
804 |
*(pfound->flag) = pfound->val; |
805 |
return 0; |
806 |
} |
807 |
return pfound->val; |
808 |
} |
809 |
nextchar = NULL; |
810 |
return 'W'; /* Let the application handle it. */ |
811 |
} |
812 |
if (temp[1] == ':') |
813 |
{ |
814 |
if (temp[2] == ':') |
815 |
{ |
816 |
/* This is an option that accepts an argument optionally. */ |
817 |
if (*nextchar != '\0') |
818 |
{ |
819 |
optarg = nextchar; |
820 |
optind++; |
821 |
} |
822 |
else |
823 |
optarg = NULL; |
824 |
nextchar = NULL; |
825 |
} |
826 |
else |
827 |
{ |
828 |
/* This is an option that requires an argument. */ |
829 |
if (*nextchar != '\0') |
830 |
{ |
831 |
optarg = nextchar; |
832 |
/* If we end this ARGV-element by taking the rest as an arg, |
833 |
we must advance to the next element now. */ |
834 |
optind++; |
835 |
} |
836 |
else if (optind == argc) |
837 |
{ |
838 |
if (opterr) |
839 |
{ |
840 |
/* 1003.2 specifies the format of this message. */ |
841 |
fprintf (stderr, |
842 |
_("%s: option requires an argument -- %c\n"), |
843 |
argv[0], c); |
844 |
} |
845 |
optopt = c; |
846 |
if (optstring[0] == ':') |
847 |
c = ':'; |
848 |
else |
849 |
c = '?'; |
850 |
} |
851 |
else |
852 |
/* We already incremented `optind' once; |
853 |
increment it again when taking next ARGV-elt as argument. */ |
854 |
optarg = argv[optind++]; |
855 |
nextchar = NULL; |
856 |
} |
857 |
} |
858 |
return c; |
859 |
} |
860 |
} |
861 |
|
862 |
int |
863 |
getopt (argc, argv, optstring) |
864 |
int argc; |
865 |
char *const *argv; |
866 |
const char *optstring; |
867 |
{ |
868 |
return _getopt_internal (argc, argv, optstring, |
869 |
(const struct option *) 0, |
870 |
(int *) 0, |
871 |
0); |
872 |
} |
873 |
|
874 |
#endif /* _LIBC or not __GNU_LIBRARY__. */ |
875 |
|
876 |
#ifdef TEST |
877 |
|
878 |
/* Compile with -DTEST to make an executable for use in testing |
879 |
the above definition of `getopt'. */ |
880 |
|
881 |
int |
882 |
main (argc, argv) |
883 |
int argc; |
884 |
char **argv; |
885 |
{ |
886 |
int c; |
887 |
int digit_optind = 0; |
888 |
|
889 |
while (1) |
890 |
{ |
891 |
int this_option_optind = optind ? optind : 1; |
892 |
|
893 |
c = getopt (argc, argv, "abc:d:0123456789"); |
894 |
if (c == EOF) |
895 |
break; |
896 |
|
897 |
switch (c) |
898 |
{ |
899 |
case '0': |
900 |
case '1': |
901 |
case '2': |
902 |
case '3': |
903 |
case '4': |
904 |
case '5': |
905 |
case '6': |
906 |
case '7': |
907 |
case '8': |
908 |
case '9': |
909 |
if (digit_optind != 0 && digit_optind != this_option_optind) |
910 |
printf ("digits occur in two different argv-elements.\n"); |
911 |
digit_optind = this_option_optind; |
912 |
printf ("option %c\n", c); |
913 |
break; |
914 |
|
915 |
case 'a': |
916 |
printf ("option a\n"); |
917 |
break; |
918 |
|
919 |
case 'b': |
920 |
printf ("option b\n"); |
921 |
break; |
922 |
|
923 |
case 'c': |
924 |
printf ("option c with value `%s'\n", optarg); |
925 |
break; |
926 |
|
927 |
case '?': |
928 |
break; |
929 |
|
930 |
default: |
931 |
printf ("?? getopt returned character code 0%o ??\n", c); |
932 |
} |
933 |
} |
934 |
|
935 |
if (optind < argc) |
936 |
{ |
937 |
printf ("non-option ARGV-elements: "); |
938 |
while (optind < argc) |
939 |
printf ("%s ", argv[optind++]); |
940 |
printf ("\n"); |
941 |
} |
942 |
|
943 |
exit (0); |
944 |
} |
945 |
|
946 |
#endif /* TEST */ |