174 lines
4.9 KiB
C
174 lines
4.9 KiB
C
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/******************************************************************************
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*
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* Module Name: getopt
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2012, Intel Corp.
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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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* 1. 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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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <contrib/dev/acpica/include/acapps.h>
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#define ERR(szz,czz) if(AcpiGbl_Opterr){fprintf(stderr,"%s%s%c\n",argv[0],szz,czz);}
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int AcpiGbl_Opterr = 1;
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int AcpiGbl_Optind = 1;
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char *AcpiGbl_Optarg;
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/*******************************************************************************
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*
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* FUNCTION: AcpiGetopt
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*
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* PARAMETERS: argc, argv - from main
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* opts - options info list
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*
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* RETURN: Option character or EOF
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*
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* DESCRIPTION: Get the next option
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*
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******************************************************************************/
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int
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AcpiGetopt(
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int argc,
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char **argv,
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char *opts)
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{
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static int CurrentCharPtr = 1;
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int CurrentChar;
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char *OptsPtr;
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if (CurrentCharPtr == 1)
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{
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if (AcpiGbl_Optind >= argc ||
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argv[AcpiGbl_Optind][0] != '-' ||
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argv[AcpiGbl_Optind][1] == '\0')
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{
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return(EOF);
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}
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else if (strcmp (argv[AcpiGbl_Optind], "--") == 0)
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{
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AcpiGbl_Optind++;
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return(EOF);
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}
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}
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/* Get the option */
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CurrentChar = argv[AcpiGbl_Optind][CurrentCharPtr];
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/* Make sure that the option is legal */
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if (CurrentChar == ':' ||
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(OptsPtr = strchr (opts, CurrentChar)) == NULL)
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{
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ERR (": illegal option -- ", CurrentChar);
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if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
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{
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AcpiGbl_Optind++;
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CurrentCharPtr = 1;
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}
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return ('?');
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}
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/* Option requires an argument? */
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if (*++OptsPtr == ':')
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{
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if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
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{
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AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
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}
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else if (++AcpiGbl_Optind >= argc)
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{
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ERR (": option requires an argument -- ", CurrentChar);
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CurrentCharPtr = 1;
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return ('?');
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}
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else
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{
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AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
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}
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CurrentCharPtr = 1;
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}
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/* Option has optional single-char arguments? */
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else if (*OptsPtr == '^')
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{
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if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
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{
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AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)];
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}
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else
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{
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AcpiGbl_Optarg = "^";
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}
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AcpiGbl_Optind++;
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CurrentCharPtr = 1;
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}
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/* Option with no arguments */
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else
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{
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if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
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{
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CurrentCharPtr = 1;
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AcpiGbl_Optind++;
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}
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AcpiGbl_Optarg = NULL;
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}
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return (CurrentChar);
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}
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