1/******************************************************************************
2 *
3 * Module Name: getopt
4 *
5 *****************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2012, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************/
115
116
117#include <stdio.h>
118#include <string.h>
119#include "acpi.h"
120#include "accommon.h"
121#include "acapps.h"
122
123#define ACPI_OPTION_ERROR(msg, badchar) \
124    if (AcpiGbl_Opterr) {fprintf (stderr, "%s%c\n", msg, badchar);}
125
126
127int   AcpiGbl_Opterr = 1;
128int   AcpiGbl_Optind = 1;
129char  *AcpiGbl_Optarg;
130
131
132/*******************************************************************************
133 *
134 * FUNCTION:    AcpiGetopt
135 *
136 * PARAMETERS:  argc, argv          - from main
137 *              opts                - options info list
138 *
139 * RETURN:      Option character or EOF
140 *
141 * DESCRIPTION: Get the next option
142 *
143 ******************************************************************************/
144
145int
146AcpiGetopt(
147    int                     argc,
148    char                    **argv,
149    char                    *opts)
150{
151    static int              CurrentCharPtr = 1;
152    int                     CurrentChar;
153    char                    *OptsPtr;
154
155
156    if (CurrentCharPtr == 1)
157    {
158        if (AcpiGbl_Optind >= argc ||
159            argv[AcpiGbl_Optind][0] != '-' ||
160            argv[AcpiGbl_Optind][1] == '\0')
161        {
162            return (EOF);
163        }
164        else if (strcmp (argv[AcpiGbl_Optind], "--") == 0)
165        {
166            AcpiGbl_Optind++;
167            return (EOF);
168        }
169    }
170
171    /* Get the option */
172
173    CurrentChar = argv[AcpiGbl_Optind][CurrentCharPtr];
174
175    /* Make sure that the option is legal */
176
177    if (CurrentChar == ':' ||
178       (OptsPtr = strchr (opts, CurrentChar)) == NULL)
179    {
180        ACPI_OPTION_ERROR ("Illegal option: -", CurrentChar);
181
182        if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
183        {
184            AcpiGbl_Optind++;
185            CurrentCharPtr = 1;
186        }
187
188        return ('?');
189    }
190
191    /* Option requires an argument? */
192
193    if (*++OptsPtr == ':')
194    {
195        if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
196        {
197            AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
198        }
199        else if (++AcpiGbl_Optind >= argc)
200        {
201            ACPI_OPTION_ERROR ("Option requires an argument: -", CurrentChar);
202
203            CurrentCharPtr = 1;
204            return ('?');
205        }
206        else
207        {
208            AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
209        }
210
211        CurrentCharPtr = 1;
212    }
213
214    /* Option has optional single-char arguments? */
215
216    else if (*OptsPtr == '^')
217    {
218        if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
219        {
220            AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)];
221        }
222        else
223        {
224            AcpiGbl_Optarg = "^";
225        }
226
227        AcpiGbl_Optind++;
228        CurrentCharPtr = 1;
229    }
230
231    /* Option has a required single-char argument? */
232
233    else if (*OptsPtr == '|')
234    {
235        if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
236        {
237            AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)];
238        }
239        else
240        {
241            ACPI_OPTION_ERROR ("Option requires a single-character suboption: -", CurrentChar);
242
243            CurrentCharPtr = 1;
244            return ('?');
245        }
246
247        AcpiGbl_Optind++;
248        CurrentCharPtr = 1;
249    }
250
251    /* Option with no arguments */
252
253    else
254    {
255        if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
256        {
257            CurrentCharPtr = 1;
258            AcpiGbl_Optind++;
259        }
260
261        AcpiGbl_Optarg = NULL;
262    }
263
264    return (CurrentChar);
265}
266