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- /******************************************************************************
- *
- * Module Name: getopt
- *
- *****************************************************************************/
- /*
- * Copyright (C) 2000 - 2015, Intel Corp.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions, and the following disclaimer,
- * without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- * substantially similar to the "NO WARRANTY" disclaimer below
- * ("Disclaimer") and any redistribution must be conditioned upon
- * including a substantially similar Disclaimer requirement for further
- * binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- * of any contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- */
- /*
- * ACPICA getopt() implementation
- *
- * Option strings:
- * "f" - Option has no arguments
- * "f:" - Option requires an argument
- * "f^" - Option has optional single-char sub-options
- * "f|" - Option has required single-char sub-options
- */
- #include <acpi/acpi.h>
- #include "accommon.h"
- #include "acapps.h"
- #define ACPI_OPTION_ERROR(msg, badchar) \
- if (acpi_gbl_opterr) {acpi_log_error ("%s%c\n", msg, badchar);}
- int acpi_gbl_opterr = 1;
- int acpi_gbl_optind = 1;
- int acpi_gbl_sub_opt_char = 0;
- char *acpi_gbl_optarg;
- static int current_char_ptr = 1;
- /*******************************************************************************
- *
- * FUNCTION: acpi_getopt_argument
- *
- * PARAMETERS: argc, argv - from main
- *
- * RETURN: 0 if an argument was found, -1 otherwise. Sets acpi_gbl_Optarg
- * to point to the next argument.
- *
- * DESCRIPTION: Get the next argument. Used to obtain arguments for the
- * two-character options after the original call to acpi_getopt.
- * Note: Either the argument starts at the next character after
- * the option, or it is pointed to by the next argv entry.
- * (After call to acpi_getopt, we need to backup to the previous
- * argv entry).
- *
- ******************************************************************************/
- int acpi_getopt_argument(int argc, char **argv)
- {
- acpi_gbl_optind--;
- current_char_ptr++;
- if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') {
- acpi_gbl_optarg =
- &argv[acpi_gbl_optind++][(int)(current_char_ptr + 1)];
- } else if (++acpi_gbl_optind >= argc) {
- ACPI_OPTION_ERROR("Option requires an argument: -", 'v');
- current_char_ptr = 1;
- return (-1);
- } else {
- acpi_gbl_optarg = argv[acpi_gbl_optind++];
- }
- current_char_ptr = 1;
- return (0);
- }
- /*******************************************************************************
- *
- * FUNCTION: acpi_getopt
- *
- * PARAMETERS: argc, argv - from main
- * opts - options info list
- *
- * RETURN: Option character or ACPI_OPT_END
- *
- * DESCRIPTION: Get the next option
- *
- ******************************************************************************/
- int acpi_getopt(int argc, char **argv, char *opts)
- {
- int current_char;
- char *opts_ptr;
- if (current_char_ptr == 1) {
- if (acpi_gbl_optind >= argc ||
- argv[acpi_gbl_optind][0] != '-' ||
- argv[acpi_gbl_optind][1] == '\0') {
- return (ACPI_OPT_END);
- } else if (strcmp(argv[acpi_gbl_optind], "--") == 0) {
- acpi_gbl_optind++;
- return (ACPI_OPT_END);
- }
- }
- /* Get the option */
- current_char = argv[acpi_gbl_optind][current_char_ptr];
- /* Make sure that the option is legal */
- if (current_char == ':' ||
- (opts_ptr = strchr(opts, current_char)) == NULL) {
- ACPI_OPTION_ERROR("Illegal option: -", current_char);
- if (argv[acpi_gbl_optind][++current_char_ptr] == '\0') {
- acpi_gbl_optind++;
- current_char_ptr = 1;
- }
- return ('?');
- }
- /* Option requires an argument? */
- if (*++opts_ptr == ':') {
- if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') {
- acpi_gbl_optarg =
- &argv[acpi_gbl_optind++][(int)
- (current_char_ptr + 1)];
- } else if (++acpi_gbl_optind >= argc) {
- ACPI_OPTION_ERROR("Option requires an argument: -",
- current_char);
- current_char_ptr = 1;
- return ('?');
- } else {
- acpi_gbl_optarg = argv[acpi_gbl_optind++];
- }
- current_char_ptr = 1;
- }
- /* Option has an optional argument? */
- else if (*opts_ptr == '+') {
- if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') {
- acpi_gbl_optarg =
- &argv[acpi_gbl_optind++][(int)
- (current_char_ptr + 1)];
- } else if (++acpi_gbl_optind >= argc) {
- acpi_gbl_optarg = NULL;
- } else {
- acpi_gbl_optarg = argv[acpi_gbl_optind++];
- }
- current_char_ptr = 1;
- }
- /* Option has optional single-char arguments? */
- else if (*opts_ptr == '^') {
- if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') {
- acpi_gbl_optarg =
- &argv[acpi_gbl_optind][(int)(current_char_ptr + 1)];
- } else {
- acpi_gbl_optarg = "^";
- }
- acpi_gbl_sub_opt_char = acpi_gbl_optarg[0];
- acpi_gbl_optind++;
- current_char_ptr = 1;
- }
- /* Option has a required single-char argument? */
- else if (*opts_ptr == '|') {
- if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') {
- acpi_gbl_optarg =
- &argv[acpi_gbl_optind][(int)(current_char_ptr + 1)];
- } else {
- ACPI_OPTION_ERROR
- ("Option requires a single-character suboption: -",
- current_char);
- current_char_ptr = 1;
- return ('?');
- }
- acpi_gbl_sub_opt_char = acpi_gbl_optarg[0];
- acpi_gbl_optind++;
- current_char_ptr = 1;
- }
- /* Option with no arguments */
- else {
- if (argv[acpi_gbl_optind][++current_char_ptr] == '\0') {
- current_char_ptr = 1;
- acpi_gbl_optind++;
- }
- acpi_gbl_optarg = NULL;
- }
- return (current_char);
- }
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