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91028c63bc
code which initialized them. - Reading/changing the errno variable is no longer done directly, but involves accessor functions. - References to the HUGE_VAL quantity now involve an accessor function, too. - Changed the manner in which the __huge_val constant is initialized by the __math_init() function. git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14824 87f5fb63-7c3d-0410-a384-fd976d0f7a62
164 lines
3.6 KiB
C
164 lines
3.6 KiB
C
/*
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* $Id: unistd_getopt.c,v 1.4 2005-02-03 16:56:17 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2005 by Olaf Barthel <olsen@sourcery.han.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _STDLIB_NULL_POINTER_CHECK_H
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#include "stdlib_null_pointer_check.h"
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#endif /* _STDLIB_NULL_POINTER_CHECK_H */
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/****************************************************************************/
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#ifndef _UNISTD_HEADERS_H
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#include "unistd_headers.h"
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#endif /* _UNISTD_HEADERS_H */
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/****************************************************************************/
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/* The following is not part of the ISO 'C' (1994) standard. */
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/****************************************************************************/
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int opterr = 1;
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int optind = 1;
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int optopt;
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char * optarg;
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/****************************************************************************/
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int
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getopt(int argc, char * argv[], char *opts)
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{
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static int sp = 1;
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int result = EOF;
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char *cp;
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int c;
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ENTER();
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SHOWVALUE(argc);
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SHOWPOINTER(argv);
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SHOWSTRING(opts);
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assert( argc > 0 && argv != NULL && opts != NULL );
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#if defined(CHECK_FOR_NULL_POINTERS)
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{
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if(argv == NULL || opts == NULL)
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{
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SHOWMSG("invalid parameters");
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__set_errno(EFAULT);
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goto out;
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}
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}
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#endif /* CHECK_FOR_NULL_POINTERS */
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if(__check_abort_enabled)
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__check_abort();
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SHOWVALUE(optind);
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if(sp == 1)
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{
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if(optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0')
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{
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goto out;
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}
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else if (strcmp(argv[optind], "--") == SAME)
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{
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optind++;
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goto out;
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}
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}
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optopt = c = argv[optind][sp];
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if(c == ':' || (cp = strchr(opts, c)) == NULL)
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{
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if(opterr != 0)
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fprintf(stderr, "%s%s%c\n", argv[0], ": illegal option -- ", c);
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if(argv[optind][++sp] == '\0')
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{
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optind++;
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sp = 1;
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}
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result = '?';
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goto out;
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}
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if(*++cp == ':')
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{
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if(argv[optind][sp+1] != '\0')
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{
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optarg = &argv[optind++][sp+1];
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}
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else if (++optind >= argc)
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{
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if(opterr != 0)
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fprintf(stderr, "%s%s%c\n", argv[0], ": option requires an argument -- ", c);
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sp = 1;
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result = '?';
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goto out;
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}
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else
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{
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optarg = argv[optind++];
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}
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sp = 1;
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}
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else
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{
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if(argv[optind][++sp] == '\0')
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{
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sp = 1;
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optind++;
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}
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optarg = NULL;
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}
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result = c;
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out:
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RETURN(result);
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return(result);
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}
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