1 /****************************************************************************** 2 * 3 * Module Name: getopt 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2014, 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 <contrib/dev/acpica/include/acpi.h> 55 #include <contrib/dev/acpica/include/accommon.h> 56 #include <contrib/dev/acpica/include/acapps.h> 57 58 #define ACPI_OPTION_ERROR(msg, badchar) \ 59 if (AcpiGbl_Opterr) {AcpiLogError ("%s%c\n", msg, badchar);} 60 61 62 int AcpiGbl_Opterr = 1; 63 int AcpiGbl_Optind = 1; 64 int AcpiGbl_SubOptChar = 0; 65 char *AcpiGbl_Optarg; 66 67 static int CurrentCharPtr = 1; 68 69 70 /******************************************************************************* 71 * 72 * FUNCTION: AcpiGetoptArgument 73 * 74 * PARAMETERS: argc, argv - from main 75 * 76 * RETURN: 0 if an argument was found, -1 otherwise. Sets AcpiGbl_Optarg 77 * to point to the next argument. 78 * 79 * DESCRIPTION: Get the next argument. Used to obtain arguments for the 80 * two-character options after the original call to AcpiGetopt. 81 * Note: Either the argument starts at the next character after 82 * the option, or it is pointed to by the next argv entry. 83 * (After call to AcpiGetopt, we need to backup to the previous 84 * argv entry). 85 * 86 ******************************************************************************/ 87 88 int 89 AcpiGetoptArgument ( 90 int argc, 91 char **argv) 92 { 93 AcpiGbl_Optind--; 94 CurrentCharPtr++; 95 96 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 97 { 98 AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)]; 99 } 100 else if (++AcpiGbl_Optind >= argc) 101 { 102 ACPI_OPTION_ERROR ("Option requires an argument: -", 'v'); 103 104 CurrentCharPtr = 1; 105 return (-1); 106 } 107 else 108 { 109 AcpiGbl_Optarg = argv[AcpiGbl_Optind++]; 110 } 111 112 CurrentCharPtr = 1; 113 return (0); 114 } 115 116 117 /******************************************************************************* 118 * 119 * FUNCTION: AcpiGetopt 120 * 121 * PARAMETERS: argc, argv - from main 122 * opts - options info list 123 * 124 * RETURN: Option character or ACPI_OPT_END 125 * 126 * DESCRIPTION: Get the next option 127 * 128 ******************************************************************************/ 129 130 int 131 AcpiGetopt( 132 int argc, 133 char **argv, 134 char *opts) 135 { 136 int CurrentChar; 137 char *OptsPtr; 138 139 140 if (CurrentCharPtr == 1) 141 { 142 if (AcpiGbl_Optind >= argc || 143 argv[AcpiGbl_Optind][0] != '-' || 144 argv[AcpiGbl_Optind][1] == '\0') 145 { 146 return (ACPI_OPT_END); 147 } 148 else if (ACPI_STRCMP (argv[AcpiGbl_Optind], "--") == 0) 149 { 150 AcpiGbl_Optind++; 151 return (ACPI_OPT_END); 152 } 153 } 154 155 /* Get the option */ 156 157 CurrentChar = argv[AcpiGbl_Optind][CurrentCharPtr]; 158 159 /* Make sure that the option is legal */ 160 161 if (CurrentChar == ':' || 162 (OptsPtr = ACPI_STRCHR (opts, CurrentChar)) == NULL) 163 { 164 ACPI_OPTION_ERROR ("Illegal option: -", CurrentChar); 165 166 if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0') 167 { 168 AcpiGbl_Optind++; 169 CurrentCharPtr = 1; 170 } 171 172 return ('?'); 173 } 174 175 /* Option requires an argument? */ 176 177 if (*++OptsPtr == ':') 178 { 179 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 180 { 181 AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)]; 182 } 183 else if (++AcpiGbl_Optind >= argc) 184 { 185 ACPI_OPTION_ERROR ("Option requires an argument: -", CurrentChar); 186 187 CurrentCharPtr = 1; 188 return ('?'); 189 } 190 else 191 { 192 AcpiGbl_Optarg = argv[AcpiGbl_Optind++]; 193 } 194 195 CurrentCharPtr = 1; 196 } 197 198 /* Option has an optional argument? */ 199 200 else if (*OptsPtr == '+') 201 { 202 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 203 { 204 AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)]; 205 } 206 else if (++AcpiGbl_Optind >= argc) 207 { 208 AcpiGbl_Optarg = NULL; 209 } 210 else 211 { 212 AcpiGbl_Optarg = argv[AcpiGbl_Optind++]; 213 } 214 215 CurrentCharPtr = 1; 216 } 217 218 /* Option has optional single-char arguments? */ 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 AcpiGbl_Optarg = "^"; 229 } 230 231 AcpiGbl_SubOptChar = AcpiGbl_Optarg[0]; 232 AcpiGbl_Optind++; 233 CurrentCharPtr = 1; 234 } 235 236 /* Option has a required single-char argument? */ 237 238 else if (*OptsPtr == '|') 239 { 240 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0') 241 { 242 AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)]; 243 } 244 else 245 { 246 ACPI_OPTION_ERROR ("Option requires a single-character suboption: -", CurrentChar); 247 248 CurrentCharPtr = 1; 249 return ('?'); 250 } 251 252 AcpiGbl_SubOptChar = AcpiGbl_Optarg[0]; 253 AcpiGbl_Optind++; 254 CurrentCharPtr = 1; 255 } 256 257 /* Option with no arguments */ 258 259 else 260 { 261 if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0') 262 { 263 CurrentCharPtr = 1; 264 AcpiGbl_Optind++; 265 } 266 267 AcpiGbl_Optarg = NULL; 268 } 269 270 return (CurrentChar); 271 } 272