1 2 /****************************************************************************** 3 * 4 * Module Name: getopt 5 * 6 *****************************************************************************/ 7 8 /* 9 * Copyright (C) 2000 - 2012, Intel Corp. 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions, and the following disclaimer, 17 * without modification. 18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 19 * substantially similar to the "NO WARRANTY" disclaimer below 20 * ("Disclaimer") and any redistribution must be conditioned upon 21 * including a substantially similar Disclaimer requirement for further 22 * binary redistribution. 23 * 3. Neither the names of the above-listed copyright holders nor the names 24 * of any contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * Alternatively, this software may be distributed under the terms of the 28 * GNU General Public License ("GPL") version 2 as published by the Free 29 * Software Foundation. 30 * 31 * NO WARRANTY 32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 * POSSIBILITY OF SUCH DAMAGES. 43 */ 44 45 46 #include <stdio.h> 47 #include <string.h> 48 #include <contrib/dev/acpica/include/acpi.h> 49 #include <contrib/dev/acpica/include/accommon.h> 50 #include <contrib/dev/acpica/include/acapps.h> 51 52 #define ACPI_OPTION_ERROR(msg, badchar) \ 53 if (AcpiGbl_Opterr) {fprintf (stderr, "%s%c\n", msg, badchar);} 54 55 56 int AcpiGbl_Opterr = 1; 57 int AcpiGbl_Optind = 1; 58 char *AcpiGbl_Optarg; 59 60 61 /******************************************************************************* 62 * 63 * FUNCTION: AcpiGetopt 64 * 65 * PARAMETERS: argc, argv - from main 66 * opts - options info list 67 * 68 * RETURN: Option character or EOF 69 * 70 * DESCRIPTION: Get the next option 71 * 72 ******************************************************************************/ 73 74 int 75 AcpiGetopt( 76 int argc, 77 char **argv, 78 char *opts) 79 { 80 static int CurrentCharPtr = 1; 81 int CurrentChar; 82 char *OptsPtr; 83 84 85 if (CurrentCharPtr == 1) 86 { 87 if (AcpiGbl_Optind >= argc || 88 argv[AcpiGbl_Optind][0] != '-' || 89 argv[AcpiGbl_Optind][1] == '\0') 90 { 91 return (EOF); 92 } 93 else if (strcmp (argv[AcpiGbl_Optind], "--") == 0) 94 { 95 AcpiGbl_Optind++; 96 return (EOF); 97 } 98 } 99 100 /* Get the option */ 101 102 CurrentChar = argv[AcpiGbl_Optind][CurrentCharPtr]; 103 104 /* Make sure that the option is legal */ 105 106 if (CurrentChar == ':' || 107 (OptsPtr = strchr (opts, CurrentChar)) == NULL) 108 { 109 ACPI_OPTION_ERROR ("Illegal option: -", CurrentChar); 110 111 if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0') 112 { 113 AcpiGbl_Optind++; 114 CurrentCharPtr = 1; 115 } 116 117 return ('?'); 118 } 119 120 /* Option requires an argument? */ 121 122 if (*++OptsPtr == ':') 123 { 124 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 125 { 126 AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)]; 127 } 128 else if (++AcpiGbl_Optind >= argc) 129 { 130 ACPI_OPTION_ERROR ("Option requires an argument: -", CurrentChar); 131 132 CurrentCharPtr = 1; 133 return ('?'); 134 } 135 else 136 { 137 AcpiGbl_Optarg = argv[AcpiGbl_Optind++]; 138 } 139 140 CurrentCharPtr = 1; 141 } 142 143 /* Option has optional single-char arguments? */ 144 145 else if (*OptsPtr == '^') 146 { 147 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 148 { 149 AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)]; 150 } 151 else 152 { 153 AcpiGbl_Optarg = "^"; 154 } 155 156 AcpiGbl_Optind++; 157 CurrentCharPtr = 1; 158 } 159 160 /* Option has a required single-char argument? */ 161 162 else if (*OptsPtr == '|') 163 { 164 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 165 { 166 AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)]; 167 } 168 else 169 { 170 ACPI_OPTION_ERROR ("Option requires a single-character suboption: -", CurrentChar); 171 172 CurrentCharPtr = 1; 173 return ('?'); 174 } 175 176 AcpiGbl_Optind++; 177 CurrentCharPtr = 1; 178 } 179 180 /* Option with no arguments */ 181 182 else 183 { 184 if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0') 185 { 186 CurrentCharPtr = 1; 187 AcpiGbl_Optind++; 188 } 189 190 AcpiGbl_Optarg = NULL; 191 } 192 193 return (CurrentChar); 194 } 195