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 - 2016, 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 * ACPICA getopt() implementation
118 *
119 * Option strings:
120 *    "f"       - Option has no arguments
121 *    "f:"      - Option requires an argument
122 *    "f+"      - Option has an optional argument
123 *    "f^"      - Option has optional single-char sub-options
124 *    "f|"      - Option has required single-char sub-options
125 */
126
127#include "acpi.h"
128#include "accommon.h"
129#include "acapps.h"
130
131#define ACPI_OPTION_ERROR(msg, badchar) \
132    if (AcpiGbl_Opterr) {AcpiLogError ("%s%c\n", msg, badchar);}
133
134
135int                 AcpiGbl_Opterr = 1;
136int                 AcpiGbl_Optind = 1;
137int                 AcpiGbl_SubOptChar = 0;
138char                *AcpiGbl_Optarg;
139
140static int          CurrentCharPtr = 1;
141
142
143/*******************************************************************************
144 *
145 * FUNCTION:    AcpiGetoptArgument
146 *
147 * PARAMETERS:  argc, argv          - from main
148 *
149 * RETURN:      0 if an argument was found, -1 otherwise. Sets AcpiGbl_Optarg
150 *              to point to the next argument.
151 *
152 * DESCRIPTION: Get the next argument. Used to obtain arguments for the
153 *              two-character options after the original call to AcpiGetopt.
154 *              Note: Either the argument starts at the next character after
155 *              the option, or it is pointed to by the next argv entry.
156 *              (After call to AcpiGetopt, we need to backup to the previous
157 *              argv entry).
158 *
159 ******************************************************************************/
160
161int
162AcpiGetoptArgument (
163    int                     argc,
164    char                    **argv)
165{
166
167    AcpiGbl_Optind--;
168    CurrentCharPtr++;
169
170    if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
171    {
172        AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
173    }
174    else if (++AcpiGbl_Optind >= argc)
175    {
176        ACPI_OPTION_ERROR ("\nOption requires an argument", 0);
177
178        CurrentCharPtr = 1;
179        return (-1);
180    }
181    else
182    {
183        AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
184    }
185
186    CurrentCharPtr = 1;
187    return (0);
188}
189
190
191/*******************************************************************************
192 *
193 * FUNCTION:    AcpiGetopt
194 *
195 * PARAMETERS:  argc, argv          - from main
196 *              opts                - options info list
197 *
198 * RETURN:      Option character or ACPI_OPT_END
199 *
200 * DESCRIPTION: Get the next option
201 *
202 ******************************************************************************/
203
204int
205AcpiGetopt(
206    int                     argc,
207    char                    **argv,
208    char                    *opts)
209{
210    int                     CurrentChar;
211    char                    *OptsPtr;
212
213
214    if (CurrentCharPtr == 1)
215    {
216        if (AcpiGbl_Optind >= argc ||
217            argv[AcpiGbl_Optind][0] != '-' ||
218            argv[AcpiGbl_Optind][1] == '\0')
219        {
220            return (ACPI_OPT_END);
221        }
222        else if (strcmp (argv[AcpiGbl_Optind], "--") == 0)
223        {
224            AcpiGbl_Optind++;
225            return (ACPI_OPT_END);
226        }
227    }
228
229    /* Get the option */
230
231    CurrentChar = argv[AcpiGbl_Optind][CurrentCharPtr];
232
233    /* Make sure that the option is legal */
234
235    if (CurrentChar == ':' ||
236       (OptsPtr = strchr (opts, CurrentChar)) == NULL)
237    {
238        ACPI_OPTION_ERROR ("Illegal option: -", CurrentChar);
239
240        if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
241        {
242            AcpiGbl_Optind++;
243            CurrentCharPtr = 1;
244        }
245
246        return ('?');
247    }
248
249    /* Option requires an argument? */
250
251    if (*++OptsPtr == ':')
252    {
253        if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
254        {
255            AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
256        }
257        else if (++AcpiGbl_Optind >= argc)
258        {
259            ACPI_OPTION_ERROR (
260                "Option requires an argument: -", CurrentChar);
261
262            CurrentCharPtr = 1;
263            return ('?');
264        }
265        else
266        {
267            AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
268        }
269
270        CurrentCharPtr = 1;
271    }
272
273    /* Option has an optional argument? */
274
275    else if (*OptsPtr == '+')
276    {
277        if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
278        {
279            AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
280        }
281        else if (++AcpiGbl_Optind >= argc)
282        {
283            AcpiGbl_Optarg = NULL;
284        }
285        else
286        {
287            AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
288        }
289
290        CurrentCharPtr = 1;
291    }
292
293    /* Option has optional single-char arguments? */
294
295    else if (*OptsPtr == '^')
296    {
297        if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
298        {
299            AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)];
300        }
301        else
302        {
303            AcpiGbl_Optarg = "^";
304        }
305
306        AcpiGbl_SubOptChar = AcpiGbl_Optarg[0];
307        AcpiGbl_Optind++;
308        CurrentCharPtr = 1;
309    }
310
311    /* Option has a required single-char argument? */
312
313    else if (*OptsPtr == '|')
314    {
315        if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
316        {
317            AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)];
318        }
319        else
320        {
321            ACPI_OPTION_ERROR (
322                "Option requires a single-character suboption: -",
323                CurrentChar);
324
325            CurrentCharPtr = 1;
326            return ('?');
327        }
328
329        AcpiGbl_SubOptChar = AcpiGbl_Optarg[0];
330        AcpiGbl_Optind++;
331        CurrentCharPtr = 1;
332    }
333
334    /* Option with no arguments */
335
336    else
337    {
338        if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
339        {
340            CurrentCharPtr = 1;
341            AcpiGbl_Optind++;
342        }
343
344        AcpiGbl_Optarg = NULL;
345    }
346
347    return (CurrentChar);
348}
349