getopt.c revision 193529 
1
2/******************************************************************************
3 *
4 * Module Name: getopt
5 *
6 *****************************************************************************/
7
8/******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
12 * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp.
13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights.  You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code.  No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision.  In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change.  Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee.  Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution.  In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89 * PARTICULAR PURPOSE.
90 *
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98 * LIMITED REMEDY.
99 *
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government.  In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
114 *
115 *****************************************************************************/
116
117
118#include <stdio.h>
119#include <string.h>
120#include <contrib/dev/acpica/include/acpi.h>
121#include <contrib/dev/acpica/include/accommon.h>
122#include <contrib/dev/acpica/include/acapps.h>
123
124#define ERR(szz,czz) if(AcpiGbl_Opterr){fprintf(stderr,"%s%s%c\n",argv[0],szz,czz);}
125
126
127int   AcpiGbl_Opterr = 1;
128int   AcpiGbl_Optind = 1;
129int   AcpiGbl_Optopt;
130char  *AcpiGbl_Optarg;
131
132
133/*******************************************************************************
134 *
135 * FUNCTION:    AcpiGetopt
136 *
137 * PARAMETERS:  argc, argv          - from main
138 *              opts                - options info list
139 *
140 * RETURN:      Option character or EOF
141 *
142 * DESCRIPTION: Get the next option
143 *
144 ******************************************************************************/
145
146int
147AcpiGetopt(
148    int                     argc,
149    char                    **argv,
150    char                    *opts)
151{
152    static int              CurrentCharPtr = 1;
153    int                     CurrentChar;
154    char                    *OptsPtr;
155
156
157    if (CurrentCharPtr == 1)
158    {
159        if (AcpiGbl_Optind >= argc ||
160            argv[AcpiGbl_Optind][0] != '-' ||
161            argv[AcpiGbl_Optind][1] == '\0')
162        {
163            return(EOF);
164        }
165        else if (strcmp (argv[AcpiGbl_Optind], "--") == 0)
166        {
167            AcpiGbl_Optind++;
168            return(EOF);
169        }
170    }
171
172    /* Get the option */
173
174    CurrentChar =
175    AcpiGbl_Optopt =
176    argv[AcpiGbl_Optind][CurrentCharPtr];
177
178    /* Make sure that the option is legal */
179
180    if (CurrentChar == ':' ||
181       (OptsPtr = strchr (opts, CurrentChar)) == NULL)
182    {
183        ERR (": illegal option -- ", CurrentChar);
184
185        if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
186        {
187            AcpiGbl_Optind++;
188            CurrentCharPtr = 1;
189        }
190
191        return ('?');
192    }
193
194    /* Option requires an argument? */
195
196    if (*++OptsPtr == ':')
197    {
198        if (argv[AcpiGbl_Optind][CurrentCharPtr+1] != '\0')
199        {
200            AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][CurrentCharPtr+1];
201        }
202        else if (++AcpiGbl_Optind >= argc)
203        {
204            ERR (": option requires an argument -- ", CurrentChar);
205
206            CurrentCharPtr = 1;
207            return ('?');
208        }
209        else
210        {
211            AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
212        }
213
214        CurrentCharPtr = 1;
215    }
216
217    /* Option has optional single-char arguments? */
218
219    else if (*OptsPtr == '^')
220    {
221        if (argv[AcpiGbl_Optind][CurrentCharPtr+1] != '\0')
222        {
223            AcpiGbl_Optarg = &argv[AcpiGbl_Optind][CurrentCharPtr+1];
224        }
225        else
226        {
227            AcpiGbl_Optarg = "^";
228        }
229
230        AcpiGbl_Optind++;
231        CurrentCharPtr = 1;
232    }
233
234    /* Option with no arguments */
235
236    else
237    {
238        if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
239        {
240            CurrentCharPtr = 1;
241            AcpiGbl_Optind++;
242        }
243
244        AcpiGbl_Optarg = NULL;
245    }
246
247    return (CurrentChar);
248}
249