1 /****************************************************************************** 2 * 3 * Module Name: getopt 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2013, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 /* 45 * ACPICA getopt() implementation 46 * 47 * Option strings: 48 * "f" - Option has no arguments 49 * "f:" - Option requires an argument 50 * "f^" - Option has optional single-char sub-options 51 * "f|" - Option has required single-char sub-options 52 */ 53 54 #include <stdio.h> 55 #include <string.h> 56 #include <contrib/dev/acpica/include/acpi.h> 57 #include <contrib/dev/acpica/include/accommon.h> 58 #include <contrib/dev/acpica/include/acapps.h> 59 60 #define ACPI_OPTION_ERROR(msg, badchar) \ 61 if (AcpiGbl_Opterr) {fprintf (stderr, "%s%c\n", msg, badchar);} 62 63 64 int AcpiGbl_Opterr = 1; 65 int AcpiGbl_Optind = 1; 66 int AcpiGbl_SubOptChar = 0; 67 char *AcpiGbl_Optarg; 68 69 static int CurrentCharPtr = 1; 70 71 72 /******************************************************************************* 73 * 74 * FUNCTION: AcpiGetoptArgument 75 * 76 * PARAMETERS: argc, argv - from main 77 * 78 * RETURN: 0 if an argument was found, -1 otherwise. Sets AcpiGbl_Optarg 79 * to point to the next argument. 80 * 81 * DESCRIPTION: Get the next argument. Used to obtain arguments for the 82 * two-character options after the original call to AcpiGetopt. 83 * Note: Either the argument starts at the next character after 84 * the option, or it is pointed to by the next argv entry. 85 * (After call to AcpiGetopt, we need to backup to the previous 86 * argv entry). 87 * 88 ******************************************************************************/ 89 90 int 91 AcpiGetoptArgument ( 92 int argc, 93 char **argv) 94 { 95 AcpiGbl_Optind--; 96 CurrentCharPtr++; 97 98 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 99 { 100 AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)]; 101 } 102 else if (++AcpiGbl_Optind >= argc) 103 { 104 ACPI_OPTION_ERROR ("Option requires an argument: -", 'v'); 105 106 CurrentCharPtr = 1; 107 return (-1); 108 } 109 else 110 { 111 AcpiGbl_Optarg = argv[AcpiGbl_Optind++]; 112 } 113 114 CurrentCharPtr = 1; 115 return (0); 116 } 117 118 119 /******************************************************************************* 120 * 121 * FUNCTION: AcpiGetopt 122 * 123 * PARAMETERS: argc, argv - from main 124 * opts - options info list 125 * 126 * RETURN: Option character or EOF 127 * 128 * DESCRIPTION: Get the next option 129 * 130 ******************************************************************************/ 131 132 int 133 AcpiGetopt( 134 int argc, 135 char **argv, 136 char *opts) 137 { 138 int CurrentChar; 139 char *OptsPtr; 140 141 142 if (CurrentCharPtr == 1) 143 { 144 if (AcpiGbl_Optind >= argc || 145 argv[AcpiGbl_Optind][0] != '-' || 146 argv[AcpiGbl_Optind][1] == '\0') 147 { 148 return (EOF); 149 } 150 else if (strcmp (argv[AcpiGbl_Optind], "--") == 0) 151 { 152 AcpiGbl_Optind++; 153 return (EOF); 154 } 155 } 156 157 /* Get the option */ 158 159 CurrentChar = argv[AcpiGbl_Optind][CurrentCharPtr]; 160 161 /* Make sure that the option is legal */ 162 163 if (CurrentChar == ':' || 164 (OptsPtr = strchr (opts, CurrentChar)) == NULL) 165 { 166 ACPI_OPTION_ERROR ("Illegal option: -", CurrentChar); 167 168 if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0') 169 { 170 AcpiGbl_Optind++; 171 CurrentCharPtr = 1; 172 } 173 174 return ('?'); 175 } 176 177 /* Option requires an argument? */ 178 179 if (*++OptsPtr == ':') 180 { 181 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 182 { 183 AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)]; 184 } 185 else if (++AcpiGbl_Optind >= argc) 186 { 187 ACPI_OPTION_ERROR ("Option requires an argument: -", CurrentChar); 188 189 CurrentCharPtr = 1; 190 return ('?'); 191 } 192 else 193 { 194 AcpiGbl_Optarg = argv[AcpiGbl_Optind++]; 195 } 196 197 CurrentCharPtr = 1; 198 } 199 200 /* Option has optional single-char arguments? */ 201 202 else if (*OptsPtr == '^') 203 { 204 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 205 { 206 AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)]; 207 } 208 else 209 { 210 AcpiGbl_Optarg = "^"; 211 } 212 213 AcpiGbl_SubOptChar = AcpiGbl_Optarg[0]; 214 AcpiGbl_Optind++; 215 CurrentCharPtr = 1; 216 } 217 218 /* Option has a required single-char argument? */ 219 220 else if (*OptsPtr == '|') 221 { 222 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 223 { 224 AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)]; 225 } 226 else 227 { 228 ACPI_OPTION_ERROR ("Option requires a single-character suboption: -", CurrentChar); 229 230 CurrentCharPtr = 1; 231 return ('?'); 232 } 233 234 AcpiGbl_SubOptChar = AcpiGbl_Optarg[0]; 235 AcpiGbl_Optind++; 236 CurrentCharPtr = 1; 237 } 238 239 /* Option with no arguments */ 240 241 else 242 { 243 if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0') 244 { 245 CurrentCharPtr = 1; 246 AcpiGbl_Optind++; 247 } 248 249 AcpiGbl_Optarg = NULL; 250 } 251 252 return (CurrentChar); 253 } 254