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1397 lines
38 KiB
C
1397 lines
38 KiB
C
/*****
|
||
** ** Module Header ******************************************************* **
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||
** **
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||
** Modules Revision 3.0 **
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||
** Providing a flexible user environment **
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** **
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** File: getopt.c **
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** First Edition: 1995/12/20 **
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||
** **
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||
** Authors: Jens Hamisch, jens@Strawberry.COM **
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||
** **
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||
** Description: getopt procedure for the Modules package **
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||
** **
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||
** Exports: getopt Recognition of commadn line options **
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||
** **
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||
** Notes: This is based on the 'Getopt for GNU' from the gcc-2.7.2 **
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** compiler. It is preferred to the libc version, because it **
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||
** provides 'long-options'. **
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||
** **
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||
** ************************************************************************ **
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||
****/
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||
/** **/
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||
/** Getopt for GNU. **/
|
||
/** 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 **/
|
||
/** before changing it! **/
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||
/** **/
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/** Copyright( C) 1987, 88, 89, 90, 91, 92, 93, 94, 95 **/
|
||
/** Free Software Foundation, Inc. **/
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||
/** **/
|
||
/** 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. **/
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||
/** **/
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||
/** This program is distributed in the hope that it will be useful, **/
|
||
/** but WITHOUT ANY WARRANTY; without even the implied warranty of **/
|
||
/** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **/
|
||
/** GNU General Public License for more details. **/
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||
/** **/
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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, 675 Mass Ave, Cambridge, MA 02139, USA. **/
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/** **/
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/** ************************************************************************ **/
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||
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/** ** Copyright *********************************************************** **
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||
** **
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||
** Copyright 1991-1994 by John L. Furlan. **
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||
** see LICENSE.GPL, which must be provided, for details **
|
||
** **
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||
** ************************************************************************ **/
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||
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static char Id[] = "@(#)$Id: getopt.c,v 1.4 2006/01/31 04:16:51 rkowen Exp $";
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static void *UseId[] = { &UseId, Id };
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||
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/** ************************************************************************ **/
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/** CONFIGURATION **/
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/** ************************************************************************ **/
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||
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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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**/
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||
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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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/**
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** This is a separate conditional since some stdc systems
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** reject `defined( const)'.
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**/
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#if !defined( __STDC__) || !__STDC__
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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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/** HEADERS **/
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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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||
** All this conditional nonsense has been commented out, because this
|
||
** version of getopt has some module specific error handling that gets
|
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** tested during the check. It's a nice sentiment, but it doesn't buy
|
||
** you much to not include this code in.
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**/
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||
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||
/**
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||
** This needs to come after some library #include
|
||
** to get __GNU_LIBRARY__ defined.
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||
**/
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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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||
** 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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**/
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||
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# ifdef __GNU_LIBRARY__
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# include <stdlib.h>
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# endif /* GNU C library. */
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/**
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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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**/
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||
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/*
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||
# ifndef _
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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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*/
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||
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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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** 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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**/
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||
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# ifdef __GNU_LIBRARY__
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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 whose names are
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** inconsistent.
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**/
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char *getenv();
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static char *my_index( const char *str, int chr)
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{
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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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/**
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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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**
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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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**/
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# ifdef __GNUC__
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# if !defined( __STDC__) || !__STDC__
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/**
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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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**/
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||
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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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/**
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** Include the modules header in order to get all error messages
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**/
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#include "modules_def.h"
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/** ************************************************************************ **/
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/** LOCAL DATATYPES **/
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/** ************************************************************************ **/
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/** not applicable **/
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||
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/** ************************************************************************ **/
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/** CONSTANTS **/
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/** ************************************************************************ **/
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||
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/** not applicable **/
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||
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/** ************************************************************************ **/
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/** MACROS **/
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/** ************************************************************************ **/
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||
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||
/** not applicable **/
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||
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/** ************************************************************************ **/
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/** GLOBAL DATA **/
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/** ************************************************************************ **/
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/**
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** The following is required for compiling the TEST environment for the
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** modules package
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**/
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#ifdef _MODULES_DEF_H
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# ifdef TEST
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char *g_current_module = "getopt";
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int linenum = 0;
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# endif
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#endif /** _MODULES_DEF_H **/
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/**
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** For communication from `getopt' to the caller. When `getopt' finds an
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** option that takes an argument, the argument value is returned here.
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** Also, when `ordering' is RETURN_IN_ORDER, each non-option ARGV-element
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** 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. This is used for
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** communication to and from the caller and for communication between
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** 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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||
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/**
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** XXX 1003.2 says this must be 1 before any call.
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**/
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int optind = 0;
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||
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/**
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||
** Callers store zero here to inhibit the error message for unrecognized
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** options.
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**/
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int opterr = 1;
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||
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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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||
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||
int optopt = '?';
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||
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||
/** ************************************************************************ **/
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||
/** LOCAL DATA **/
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||
/** ************************************************************************ **/
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||
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#ifdef _MODULES_DEF_H
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||
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/**
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||
** Runtime information for the modules package
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||
**/
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||
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static char module_name[] = "getopt.c"; /** File name of this module **/
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||
#ifdef _MODULES_DEF_H
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# if WITH_DEBUGGING_INIT
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static char _proc_exchange[] = "exchange";
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static char _proc_getopt_initialize[] = "_getopt_initialize";
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static char _proc_getopt_internal[] = " _getopt_internal";
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static char _proc_getopt[] = "getopt";
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static char _proc_getopt_long[] = "getopt_long";
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static char _proc_getopt_long_only[] = "getopt_long_only";
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# endif
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#endif
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# ifdef TEST
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static char _proc_main[] = "main";
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# endif
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#endif /** _MODULES_DEF_H **/
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||
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/**
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** The next char to be scanned in the option-element in which the last
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** option character we returned was found. This allows us to pick up
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** 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 by advan-
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** cing to the next ARGV-element.
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**/
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||
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||
static char *nextchar;
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||
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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, the default is REQUIRE_ORDER if
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||
** the environment variable POSIXLY_CORRECT is defined, PERMUTE otherwise.
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||
**
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||
** REQUIRE_ORDER means don't recognize them as options;
|
||
** 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
|
||
** of the list of option characters.
|
||
**
|
||
** PERMUTE is the default. We permute the contents of ARGV as we scan,
|
||
** so that eventually all the non-options are at the end. This allows options
|
||
** to be given in any order, even with programs that were not written to
|
||
** expect this.
|
||
**
|
||
** RETURN_IN_ORDER is an option available to programs that were written
|
||
** to expect options and other ARGV-elements in any order and that care about
|
||
** the ordering of the two. We describe each non-option ARGV-element
|
||
** as if it were the argument of an option with character code 1.
|
||
** Using `-' as the first character of the list of option characters
|
||
** selects this mode of operation.
|
||
**
|
||
** The special argument `--' forces an end of option-scanning regardless
|
||
** of the value of `ordering'. In the case of RETURN_IN_ORDER, only
|
||
** `--' can cause `getopt' to return EOF with `optind' != ARGC.
|
||
**/
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||
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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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||
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||
/**
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||
** Value of POSIXLY_CORRECT environment variable.
|
||
**/
|
||
|
||
static char *posixly_correct;
|
||
|
||
/**
|
||
** Handle permutation of arguments.
|
||
**/
|
||
|
||
/**
|
||
** Describe the part of ARGV that contains non-options that have
|
||
** been skipped. `first_nonopt' is the index in ARGV of the first of them;
|
||
** `last_nonopt' is the index after the last of them.
|
||
**/
|
||
|
||
static int first_nonopt;
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||
static int last_nonopt;
|
||
|
||
/** ************************************************************************ **/
|
||
/** PROTOTYPES **/
|
||
/** ************************************************************************ **/
|
||
|
||
static void exchange( char **argv);
|
||
static const char *_getopt_initialize( const char *optstring);
|
||
static int _getopt_internal( int argc,
|
||
char *const *argv,
|
||
const char *optstring,
|
||
const struct option *longopts,
|
||
int *longind,
|
||
int long_only);
|
||
|
||
/*++++
|
||
** ** Function-Header ***************************************************** **
|
||
** **
|
||
** Function: exchange **
|
||
** **
|
||
** Description: Exchange two adjacent subsequences of ARGV. **
|
||
** One subsequence is elements( first_nonopt, **
|
||
** last_nonopt) which contains all the non-options that **
|
||
** have been skipped so far. The other is elements **
|
||
** (last_nonopt,optind), which contains all the options **
|
||
** processed since those non-options were skipped. **
|
||
** **
|
||
** `first_nonopt' and `last_nonopt' are relocated so **
|
||
** that they describe the new indices of the non-options**
|
||
** in ARGV after they are moved. **
|
||
** **
|
||
** First Edition: 1995/12/20 **
|
||
** **
|
||
** Parameters: char **argv Command line arguments **
|
||
** **
|
||
** Result: argv ARGV array with exchanged sequences **
|
||
** **
|
||
** Attached Globals: first_nonopt first and last non option argument **
|
||
** last_nonopt on the stream before and after the **
|
||
** change.( I/O parameter) **
|
||
** **
|
||
** ************************************************************************ **
|
||
++++*/
|
||
|
||
static void exchange( char **argv)
|
||
{
|
||
int bottom = first_nonopt;
|
||
int middle = last_nonopt;
|
||
int top = optind;
|
||
char *tem;
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_START, LOC, _proc_exchange, NULL);
|
||
# endif
|
||
#endif
|
||
|
||
/**
|
||
** Exchange the shorter segment with the far end of the longer segment.
|
||
** That puts the shorter segment into the right place.
|
||
** It leaves the longer segment in the right place overall,
|
||
** but it consists of two parts that need to be swapped next.
|
||
**/
|
||
|
||
while( top > middle && middle > bottom) {
|
||
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++) {
|
||
tem = argv[bottom + i];
|
||
argv[bottom + i] = argv[top -( middle - bottom) + i];
|
||
argv[top -( middle - bottom) + i] = tem;
|
||
}
|
||
|
||
/**
|
||
** 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];
|
||
argv[bottom + i] = argv[middle + i];
|
||
argv[middle + i] = tem;
|
||
}
|
||
|
||
/**
|
||
** Exclude the moved top segment from further swapping.
|
||
**/
|
||
|
||
bottom += len;
|
||
}
|
||
|
||
} /** while **/
|
||
|
||
/**
|
||
** Update records for the slots the non-options now occupy.
|
||
**/
|
||
|
||
first_nonopt +=( optind - last_nonopt);
|
||
last_nonopt = optind;
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_END, LOC, _proc_exchange, NULL);
|
||
# endif
|
||
#endif
|
||
|
||
} /** end of 'exchange' **/
|
||
|
||
/*++++
|
||
** ** Function-Header ***************************************************** **
|
||
** **
|
||
** Function: _getopt_initialize **
|
||
** **
|
||
** Description: Initialize the internal data when the first call is **
|
||
** made **
|
||
** This defines how to proceed if options and non-op- **
|
||
** tions are mixed up. See definition of the enum **
|
||
** 'ordering' for further explanation. **
|
||
** **
|
||
** First Edition: 1995/12/20 **
|
||
** **
|
||
** Parameters: char *optstring Options string **
|
||
** **
|
||
** Result: argv ARGV array with exchanged sequences **
|
||
** **
|
||
** Attached globals: first_nonopt, First an las position of **
|
||
** last_nonopt non-option arguments **
|
||
** optind Option scan index **
|
||
** nextchar Next character to scan **
|
||
** posixly_correct Value of the environment **
|
||
** variable 'POSIXLY_CORRECT' **
|
||
** ordering Ordering method ... **
|
||
** **
|
||
** ************************************************************************ **
|
||
++++*/
|
||
|
||
static const char *_getopt_initialize( const char *optstring)
|
||
{
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_START, LOC, _proc_getopt_initialize, NULL);
|
||
# endif
|
||
#endif
|
||
|
||
/**
|
||
** 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 = 1;
|
||
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;
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_END, LOC, _proc_getopt_initialize, NULL);
|
||
# endif
|
||
#endif
|
||
|
||
return( optstring);
|
||
|
||
} /** End of '_getopt_initialize' **/
|
||
|
||
/*++++
|
||
** ** Function-Header ***************************************************** **
|
||
** **
|
||
** Function: _getopt_internal **
|
||
** **
|
||
** Description: Scan elements of ARGV( whose length is ARGC) for **
|
||
** option characters given in OPTSTRING. **
|
||
** or long-options specified in the longopt array **
|
||
** **
|
||
** First Edition: 1995/12/20 **
|
||
** **
|
||
** Parameters: int argc, # of arguments **
|
||
** char **argv, ARGV array **
|
||
** char *optstring, String of valid **
|
||
** short options **
|
||
** struct option *longopts, Table of valid long **
|
||
** options **
|
||
** int *longind, Returns the index of **
|
||
** the found long opt. **
|
||
** int long_only Search long options **
|
||
** only **
|
||
** **
|
||
** Result: int '?' Parse error **
|
||
** 0 Long option w/o argument found **
|
||
** else short option that has been found **
|
||
** or the value of a long option **
|
||
** EOF no more arguments on ARGV **
|
||
** **
|
||
** Attached globals: optind Index of the current option in the **
|
||
** ARGV array **
|
||
** optarg Argument of an option with value **
|
||
** **
|
||
** ************************************************************************ **
|
||
++++*/
|
||
/** **/
|
||
/** If an element of ARGV starts with '-', and is not exactly "-" or "--", **/
|
||
/** then it is an option element. The characters of this element **/
|
||
/** ( aside from the initial '-') are option characters. If `getopt' **/
|
||
/** is called repeatedly, it returns successively each of the option **/
|
||
/** characters from each of the option elements. **/
|
||
/** **/
|
||
/** If `getopt' finds another option character, it returns that character, **/
|
||
/** updating `optind' and `nextchar' so that the next call to `getopt' can **/
|
||
/** resume the scan with the following option character or ARGV-element. **/
|
||
/** **/
|
||
/** If there are no more option characters, `getopt' returns `EOF'. **/
|
||
/** Then `optind' is the index in ARGV of the first ARGV-element **/
|
||
/** that is not an option. ( The ARGV-elements have been permuted **/
|
||
/** so that those that are not options now come last.) **/
|
||
/** **/
|
||
/** OPTSTRING is a string containing the legitimate option characters. **/
|
||
/** If an option character is seen that is not listed in OPTSTRING, **/
|
||
/** return '?' after printing an error message. If you set `opterr' to **/
|
||
/** zero, the error message is suppressed but we still return '?'. **/
|
||
/** **/
|
||
/** If a char in OPTSTRING is followed by a colon, that means it wants an **/
|
||
/** arg, so the following text in the same ARGV-element, or the text of **/
|
||
/** the following ARGV-element, is returned in `optarg'. Two colons mean **/
|
||
/** an option that wants an optional arg; if there is text in the current **/
|
||
/** ARGV-element, it is returned in `optarg', otherwise `optarg' is set to **/
|
||
/** zero. **/
|
||
/** **/
|
||
/** If OPTSTRING starts with `-' or `+', it requests different methods of **/
|
||
/** handling the non-option ARGV-elements. **/
|
||
/** See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. **/
|
||
/** **/
|
||
/** Long-named options begin with `--' instead of `-'. **/
|
||
/** Their names may be abbreviated as long as the abbreviation is unique **/
|
||
/** or is an exact match for some defined option. If they have an **/
|
||
/** argument, it follows the option name in the same ARGV-element, **/
|
||
/** separated from the option name by a `=', or else the in next ARGV- **/
|
||
/** element. When `getopt' finds a long-named option, it returns 0 if **/
|
||
/** that option's `flag' field is nonzero, the value of the option's `val' **/
|
||
/** field if the `flag' field is zero. **/
|
||
/** **/
|
||
/** The elements of ARGV aren't really const, because we permute them. **/
|
||
/** But we pretend they're const in the prototype to be compatible **/
|
||
/** with other systems. **/
|
||
/** **/
|
||
/** LONGOPTS is a vector of `struct option' terminated by an **/
|
||
/** element containing a name which is zero. **/
|
||
/** **/
|
||
/** LONGIND returns the index in LONGOPT of the long-named option found. **/
|
||
/** It is only valid when a long-named option has been found by the most **/
|
||
/** recent call. **/
|
||
/** **/
|
||
/** If LONG_ONLY is nonzero, '-' as well as '--' can introduce **/
|
||
/** long-named options. **/
|
||
/** **/
|
||
/** ************************************************************************ **/
|
||
|
||
static int _getopt_internal( int argc,
|
||
char *const *argv,
|
||
const char *optstring,
|
||
const struct option *longopts,
|
||
int *longind,
|
||
int long_only)
|
||
{
|
||
optarg = NULL;
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_START, LOC, _proc_getopt_internal, NULL);
|
||
# endif
|
||
#endif
|
||
|
||
/**
|
||
** Initialization
|
||
**/
|
||
|
||
if( optind == 0) {
|
||
optstring = _getopt_initialize( optstring);
|
||
optind = 1; /** Don't scan ARGV[0], the program name. **/
|
||
}
|
||
|
||
if( nextchar == NULL || *nextchar == '\0') {
|
||
|
||
/**
|
||
** Advance to the next ARGV-element.
|
||
**/
|
||
|
||
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 &&
|
||
( argv[optind][0] != '-' || argv[optind][1] == '\0'))
|
||
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( EOF);
|
||
}
|
||
|
||
/**
|
||
** If we have come to a non-option and did not permute it,
|
||
** either stop the scan or describe it to the caller and pass it by.
|
||
**/
|
||
|
||
if( argv[optind][0] != '-' || argv[optind][1] == '\0') {
|
||
|
||
if( ordering == REQUIRE_ORDER)
|
||
return EOF;
|
||
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;
|
||
int option_index;
|
||
|
||
/**
|
||
** Skip the remaining characters of the long option upt to its
|
||
** names end( End of the option itsself or the '=' sign)
|
||
**/
|
||
|
||
for( nameend = nextchar; *nameend && *nameend != '='; nameend++);
|
||
|
||
/**
|
||
** 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( 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( !strncmp) **/
|
||
} /** for **/
|
||
|
||
/**
|
||
** Print an error message for ambigious abbreviations and exit
|
||
** on error
|
||
**/
|
||
|
||
if( ambig && !exact) {
|
||
|
||
if( opterr)
|
||
#ifdef _MODULES_DEF_H
|
||
ErrorLogger( ERR_OPT_AMBIG, LOC, argv[optind], NULL);
|
||
#else
|
||
fprintf( stderr, _("%s: option `%s' is ambiguous\n"),
|
||
argv[0], argv[optind]);
|
||
#endif
|
||
|
||
nextchar += strlen( nextchar);
|
||
optind++;
|
||
return( '?');
|
||
}
|
||
|
||
/**
|
||
** Longname found ?
|
||
**/
|
||
|
||
if( pfound != NULL) {
|
||
|
||
option_index = indfound;
|
||
optind++;
|
||
|
||
/**
|
||
** *nameend is != NULL if there is a value specified for
|
||
** the option: '--option=value' -> *nameend = '='
|
||
**/
|
||
|
||
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( opterr)
|
||
|
||
/**
|
||
** ERROR: --option w/o argument
|
||
**/
|
||
|
||
if( argv[optind - 1][1] == '-')
|
||
#ifdef _MODULES_DEF_H
|
||
ErrorLogger( ERR_OPT_NOARG, LOC, pfound->name, NULL);
|
||
#else
|
||
fprintf( stderr,
|
||
_("%s: option `--%s' doesn't allow an argument\n"),
|
||
argv[0], pfound->name);
|
||
#endif
|
||
|
||
/**
|
||
** ERROR: +option or -option w/o argument
|
||
**/
|
||
|
||
else {
|
||
#ifdef _MODULES_DEF_H
|
||
char buffer[ BUFSIZ];
|
||
sprintf( buffer, "%c%s", argv[optind - 1][0], pfound->name);
|
||
ErrorLogger( ERR_OPT_NOARG, LOC, buffer, NULL);
|
||
#else
|
||
fprintf( stderr,
|
||
_("%s: option `%c%s' doesn't allow an argument\n"),
|
||
argv[0], argv[optind - 1][0], pfound->name);
|
||
#endif
|
||
}
|
||
|
||
nextchar += strlen( nextchar);
|
||
return( '?');
|
||
}
|
||
|
||
/**
|
||
** Options with arguments
|
||
**/
|
||
|
||
} else if( pfound->has_arg == 1) {
|
||
|
||
if( optind < argc)
|
||
optarg = argv[optind++];
|
||
|
||
else {
|
||
|
||
/**
|
||
** ERROR: Option without argument where one is required
|
||
**/
|
||
|
||
if( opterr)
|
||
#ifdef _MODULES_DEF_H
|
||
ErrorLogger( ERR_OPT_REQARG, LOC, argv[optind-1], NULL);
|
||
#else
|
||
fprintf( stderr,
|
||
_("%s: option `%s' requires an argument\n"),
|
||
argv[0], argv[optind - 1]);
|
||
#endif
|
||
|
||
nextchar += strlen( nextchar);
|
||
return((optstring[0] == ':') ? ':' : '?');
|
||
}
|
||
}
|
||
|
||
/**
|
||
** Return the indication, that a long vlaue has been found
|
||
** and set up pointers for the next option expansion
|
||
**/
|
||
|
||
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( opterr) {
|
||
|
||
/**
|
||
** ERROR: unrecognized --option
|
||
**/
|
||
|
||
if( argv[optind][1] == '-') {
|
||
#ifdef _MODULES_DEF_H
|
||
ErrorLogger( ERR_OPT_UNKNOWN, LOC, nextchar, NULL);
|
||
#else
|
||
fprintf( stderr, _("%s: unrecognized option `--%s'\n"),
|
||
argv[0], nextchar);
|
||
#endif
|
||
|
||
/**
|
||
** ERROR: unrecognized +option or -option
|
||
**/
|
||
|
||
} else {
|
||
#ifdef _MODULES_DEF_H
|
||
char buffer[ BUFSIZ];
|
||
sprintf( buffer, "%c%s", argv[optind][0], nextchar);
|
||
ErrorLogger( ERR_OPT_AMBIG, LOC, buffer, NULL);
|
||
#else
|
||
fprintf( stderr, _("%s: unrecognized option `%c%s'\n"),
|
||
argv[0], argv[optind][0], nextchar);
|
||
#endif
|
||
}
|
||
}
|
||
|
||
nextchar =( char *) "";
|
||
optind++;
|
||
return( '?');
|
||
}
|
||
} /** if( long option) **/
|
||
|
||
/**
|
||
** 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;
|
||
|
||
/**
|
||
** Unrecognized options
|
||
**/
|
||
|
||
if( temp == NULL || c == ':') {
|
||
if( opterr) {
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
char buffer[ 2];
|
||
buffer[ 0] = c;
|
||
buffer[ 1] = '\0';
|
||
#endif
|
||
|
||
if( posixly_correct) {
|
||
|
||
/**
|
||
** 1003.2 specifies the format of this message.
|
||
**/
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
ErrorLogger( ERR_OPT_ILL, LOC, buffer, NULL);
|
||
#else
|
||
fprintf( stderr, _("%s: illegal option -- %c\n"),
|
||
argv[0], c);
|
||
#endif
|
||
} else {
|
||
#ifdef _MODULES_DEF_H
|
||
ErrorLogger( ERR_OPT_INV, LOC, buffer, NULL);
|
||
#else
|
||
fprintf( stderr, _("%s: invalid option -- %c\n"),
|
||
argv[0], c);
|
||
#endif
|
||
}
|
||
}
|
||
optopt = c;
|
||
return( '?');
|
||
}
|
||
|
||
/**
|
||
**
|
||
**/
|
||
|
||
if( temp[1] == ':') {
|
||
if( temp[2] == ':') {
|
||
|
||
/**
|
||
** This is an option that accepts an argument optionally.
|
||
**/
|
||
|
||
if( *nextchar != '\0') {
|
||
optarg = nextchar;
|
||
optind++;
|
||
} else
|
||
optarg = NULL;
|
||
|
||
nextchar = NULL;
|
||
|
||
} else { /** optional argument **/
|
||
|
||
/**
|
||
** This is an option that requires an argument.
|
||
**/
|
||
|
||
if( *nextchar != '\0') {
|
||
optarg = nextchar;
|
||
|
||
/**
|
||
** If we end this ARGV-element by taking the rest as an arg,
|
||
** we must advance to the next element now.
|
||
**/
|
||
|
||
optind++;
|
||
|
||
} else if( optind == argc) {
|
||
|
||
if( opterr) {
|
||
|
||
/**
|
||
** 1003.2 specifies the format of this message. *
|
||
**/
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
char buffer[ 2];
|
||
buffer[ 0] = c;
|
||
buffer[ 1] = '\0';
|
||
ErrorLogger( ERR_OPT_REQARG, LOC, buffer, NULL);
|
||
#else
|
||
fprintf( stderr,
|
||
_("%s: option requires an argument -- %c\n"),
|
||
argv[0], c);
|
||
#endif
|
||
}
|
||
|
||
optopt = c;
|
||
if( optstring[0] == ':')
|
||
c = ':';
|
||
else
|
||
c = '?';
|
||
|
||
} else
|
||
|
||
/**
|
||
** We already incremented `optind' once;
|
||
** increment it again when taking next ARGV-elt as argument.
|
||
**/
|
||
|
||
optarg = argv[optind++];
|
||
nextchar = NULL;
|
||
}
|
||
}
|
||
|
||
/**
|
||
** Now c contains the found character in case of success of '?' in case
|
||
** of failure
|
||
**/
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_END, LOC, _proc_getopt_internal, NULL);
|
||
# endif
|
||
#endif
|
||
return( c);
|
||
|
||
} /** block **/
|
||
|
||
} /** End of '_getopt_internal' **/
|
||
|
||
/*++++
|
||
** ** Function-Header ***************************************************** **
|
||
** **
|
||
** Function: getopt, getopt_long, getopt_long_only **
|
||
** **
|
||
** Description: Calls _getopt_internal in order to provide a normal **
|
||
** getopt call. **
|
||
** **
|
||
** First Edition: 1995/12/20 **
|
||
** **
|
||
** Parameters: int argc, # of arguments **
|
||
** char **argv, ARGV array **
|
||
** char *optstring, String of valid short opt. **
|
||
** **
|
||
** Result: int '?' Parse error **
|
||
** 0 Long option w/o argument found **
|
||
** else short option that has been found **
|
||
** or the value of a long option **
|
||
** EOF no more arguments on ARGV **
|
||
** **
|
||
** Attached globals: optind Index of the current option in the **
|
||
** ARGV array **
|
||
** optarg Argument of an option with value **
|
||
** opterr Set in case of parse errors **
|
||
** **
|
||
** ************************************************************************ **
|
||
++++*/
|
||
|
||
int getopt( int argc, char *const *argv, const char *optstring)
|
||
{
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_START, LOC, _proc_getopt, NULL);
|
||
# endif
|
||
#endif
|
||
|
||
return _getopt_internal( argc, argv, optstring,
|
||
( const struct option *) 0,
|
||
( int *) 0,
|
||
0);
|
||
} /** End of 'getopt' **/
|
||
|
||
int getopt_long( int argc, char *const *argv, const char *optstring,
|
||
const struct option *longopts, int *longind)
|
||
{
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_START, LOC, _proc_getopt_long, NULL);
|
||
# endif
|
||
#endif
|
||
|
||
return _getopt_internal( argc, argv, optstring, longopts, longind, 0);
|
||
|
||
} /** End of 'getopt' **/
|
||
|
||
int getopt_long_only( int argc, char *const *argv, const char *optstring,
|
||
const struct option *longopts, int *longind)
|
||
{
|
||
|
||
#ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_START, LOC, _proc_getopt_long_only, NULL);
|
||
# endif
|
||
#endif
|
||
|
||
return _getopt_internal( argc, argv, optstring, longopts, longind, 1);
|
||
|
||
} /** End of 'getopt' **/
|
||
|
||
/* #endif */ /* _LIBC or not __GNU_LIBRARY__. */
|
||
|
||
#ifdef TEST
|
||
|
||
/*++++
|
||
** ** Function-Header ***************************************************** **
|
||
** **
|
||
** Function: main **
|
||
** **
|
||
** Description: Test procedure for getopt **
|
||
** Compile with -DTEST to make an executable for use in **
|
||
** testing the above definition of `getopt' **
|
||
** **
|
||
** First Edition: 1995/12/20 **
|
||
** **
|
||
** Parameters: int argc, # of arguments **
|
||
** char **argv, ARGV array **
|
||
** **
|
||
** Result: - **
|
||
** **
|
||
** ************************************************************************ **
|
||
++++*/
|
||
|
||
int main( int argc, char **argv)
|
||
{
|
||
|
||
# ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_START, LOC, _proc_main, NULL);
|
||
# endif
|
||
# endif
|
||
|
||
int c;
|
||
int digit_optind = 0;
|
||
int longind;
|
||
int option, verbose;
|
||
char *value;
|
||
|
||
const struct option longopts[] = {
|
||
{ "test", no_argument, NULL, 0 },
|
||
{ "option", optional_argument, &option, 1 },
|
||
{ "verbose", optional_argument, NULL, 'v' },
|
||
{ "value", required_argument, NULL, 'x'},
|
||
{ NULL, no_argument, NULL, 0 }
|
||
};
|
||
|
||
/**
|
||
** Print all options ...
|
||
**/
|
||
|
||
while( 1) {
|
||
|
||
int this_option_optind = optind ? optind : 1;
|
||
|
||
c = getopt_long( argc, argv, "abc:d:0123456789", longopts, &longind);
|
||
if( c == EOF)
|
||
break; /** while( 1) **/
|
||
|
||
switch( c) {
|
||
|
||
case 0:
|
||
printf( "option --test or --option\n");
|
||
if( optarg)
|
||
printf( "with argument '%s'", optarg);
|
||
printf( "\n option is set to %d\n", option);
|
||
break;
|
||
|
||
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 'v':
|
||
case 'x':
|
||
printf( "option %c ", c);
|
||
if( optarg)
|
||
printf( "with argument '%s'", optarg);
|
||
printf( "\n");
|
||
break;
|
||
|
||
case '?':
|
||
break;
|
||
|
||
default:
|
||
printf( "?? getopt returned character code 0%o ??\n", c);
|
||
}
|
||
} /** while( 1) **/
|
||
|
||
/**
|
||
** Finally print all remaining arguments
|
||
**/
|
||
|
||
if( optind < argc) {
|
||
printf( "non-option ARGV-elements: ");
|
||
while( optind < argc)
|
||
printf( "%s ", argv[optind++]);
|
||
printf( "\n");
|
||
}
|
||
|
||
/**
|
||
** Exit on success
|
||
**/
|
||
|
||
# ifdef _MODULES_DEF_H
|
||
# if WITH_DEBUGGING_INIT
|
||
ErrorLogger( NO_ERR_END, LOC, _proc_main, NULL);
|
||
# endif
|
||
# endif
|
||
|
||
exit( 0);
|
||
|
||
} /** End of 'main' **/
|
||
|
||
#endif /* TEST */
|