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 - 2023, 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  * Alternatively, you may choose to be licensed under the terms of the
117  * following license:
118  *
119  * Redistribution and use in source and binary forms, with or without
120  * modification, are permitted provided that the following conditions
121  * are met:
122  * 1. Redistributions of source code must retain the above copyright
123  *    notice, this list of conditions, and the following disclaimer,
124  *    without modification.
125  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126  *    substantially similar to the "NO WARRANTY" disclaimer below
127  *    ("Disclaimer") and any redistribution must be conditioned upon
128  *    including a substantially similar Disclaimer requirement for further
129  *    binary redistribution.
130  * 3. Neither the names of the above-listed copyright holders nor the names
131  *    of any contributors may be used to endorse or promote products derived
132  *    from this software without specific prior written permission.
133  *
134  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145  *
146  * Alternatively, you may choose to be licensed under the terms of the
147  * GNU General Public License ("GPL") version 2 as published by the Free
148  * Software Foundation.
149  *
150  *****************************************************************************/
151 
152 /*
153  * ACPICA getopt() implementation
154  *
155  * Option strings:
156  *    "f"       - Option has no arguments
157  *    "f:"      - Option requires an argument
158  *    "f+"      - Option has an optional argument
159  *    "f^"      - Option has optional single-char sub-options
160  *    "f|"      - Option has required single-char sub-options
161  */
162 
163 #include "acpi.h"
164 #include "accommon.h"
165 #include "acapps.h"
166 
167 #define ACPI_OPTION_ERROR(msg, badchar) \
168     if (AcpiGbl_Opterr) {fprintf (stderr, "%s%c\n", msg, badchar);}
169 
170 
171 int                 AcpiGbl_Opterr = 1;
172 int                 AcpiGbl_Optind = 1;
173 int                 AcpiGbl_SubOptChar = 0;
174 char                *AcpiGbl_Optarg;
175 
176 static int          CurrentCharPtr = 1;
177 
178 
179 /*******************************************************************************
180  *
181  * FUNCTION:    AcpiGetoptArgument
182  *
183  * PARAMETERS:  argc, argv          - from main
184  *
185  * RETURN:      0 if an argument was found, -1 otherwise. Sets AcpiGbl_Optarg
186  *              to point to the next argument.
187  *
188  * DESCRIPTION: Get the next argument. Used to obtain arguments for the
189  *              two-character options after the original call to AcpiGetopt.
190  *              Note: Either the argument starts at the next character after
191  *              the option, or it is pointed to by the next argv entry.
192  *              (After call to AcpiGetopt, we need to backup to the previous
193  *              argv entry).
194  *
195  ******************************************************************************/
196 
197 int
AcpiGetoptArgument(int argc,char ** argv)198 AcpiGetoptArgument (
199     int                     argc,
200     char                    **argv)
201 {
202 
203     AcpiGbl_Optind--;
204     CurrentCharPtr++;
205 
206     if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
207     {
208         AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
209     }
210     else if (++AcpiGbl_Optind >= argc)
211     {
212         ACPI_OPTION_ERROR ("\nOption requires an argument", 0);
213 
214         CurrentCharPtr = 1;
215         return (-1);
216     }
217     else
218     {
219         AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
220     }
221 
222     CurrentCharPtr = 1;
223     return (0);
224 }
225 
226 
227 /*******************************************************************************
228  *
229  * FUNCTION:    AcpiGetopt
230  *
231  * PARAMETERS:  argc, argv          - from main
232  *              opts                - options info list
233  *
234  * RETURN:      Option character or ACPI_OPT_END
235  *
236  * DESCRIPTION: Get the next option
237  *
238  ******************************************************************************/
239 
240 int
AcpiGetopt(int argc,char ** argv,char * opts)241 AcpiGetopt(
242     int                     argc,
243     char                    **argv,
244     char                    *opts)
245 {
246     int                     CurrentChar;
247     char                    *OptsPtr;
248 
249 
250     if (CurrentCharPtr == 1)
251     {
252         if (AcpiGbl_Optind >= argc ||
253             argv[AcpiGbl_Optind][0] != '-' ||
254             argv[AcpiGbl_Optind][1] == '\0')
255         {
256             return (ACPI_OPT_END);
257         }
258         else if (strcmp (argv[AcpiGbl_Optind], "--") == 0)
259         {
260             AcpiGbl_Optind++;
261             return (ACPI_OPT_END);
262         }
263     }
264 
265     /* Get the option */
266 
267     CurrentChar = argv[AcpiGbl_Optind][CurrentCharPtr];
268 
269     /* Make sure that the option is legal */
270 
271     if (CurrentChar == ':' ||
272        (OptsPtr = strchr (opts, CurrentChar)) == NULL)
273     {
274         ACPI_OPTION_ERROR ("Illegal option: -", CurrentChar);
275 
276         if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
277         {
278             AcpiGbl_Optind++;
279             CurrentCharPtr = 1;
280         }
281 
282         return ('?');
283     }
284 
285     /* Option requires an argument? */
286 
287     if (*++OptsPtr == ':')
288     {
289         if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
290         {
291             AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
292         }
293         else if (++AcpiGbl_Optind >= argc)
294         {
295             ACPI_OPTION_ERROR (
296                 "Option requires an argument: -", CurrentChar);
297 
298             CurrentCharPtr = 1;
299             return ('?');
300         }
301         else
302         {
303             AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
304         }
305 
306         CurrentCharPtr = 1;
307     }
308 
309     /* Option has an optional argument? */
310 
311     else if (*OptsPtr == '+')
312     {
313         if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
314         {
315             AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
316         }
317         else if (++AcpiGbl_Optind >= argc)
318         {
319             AcpiGbl_Optarg = NULL;
320         }
321         else
322         {
323             AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
324         }
325 
326         CurrentCharPtr = 1;
327     }
328 
329     /* Option has optional single-char arguments? */
330 
331     else if (*OptsPtr == '^')
332     {
333         if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
334         {
335             AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)];
336         }
337         else
338         {
339             AcpiGbl_Optarg = "^";
340         }
341 
342         AcpiGbl_SubOptChar = AcpiGbl_Optarg[0];
343         AcpiGbl_Optind++;
344         CurrentCharPtr = 1;
345     }
346 
347     /* Option has a required single-char argument? */
348 
349     else if (*OptsPtr == '|')
350     {
351         if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
352         {
353             AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)];
354         }
355         else
356         {
357             ACPI_OPTION_ERROR (
358                 "Option requires a single-character suboption: -",
359                 CurrentChar);
360 
361             CurrentCharPtr = 1;
362             return ('?');
363         }
364 
365         AcpiGbl_SubOptChar = AcpiGbl_Optarg[0];
366         AcpiGbl_Optind++;
367         CurrentCharPtr = 1;
368     }
369 
370     /* Option with no arguments */
371 
372     else
373     {
374         if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
375         {
376             CurrentCharPtr = 1;
377             AcpiGbl_Optind++;
378         }
379 
380         AcpiGbl_Optarg = NULL;
381     }
382 
383     return (CurrentChar);
384 }
385