1 /******************************************************************************
2 *
3 * Module Name: getopt
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2014, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44 /*
45 * ACPICA getopt() implementation
46 *
47 * Option strings:
48 * "f" - Option has no arguments
49 * "f:" - Option requires an argument
50 * "f^" - Option has optional single-char sub-options
51 * "f|" - Option has required single-char sub-options
52 */
53
54 #include <stdio.h>
55 #include <string.h>
56 #include "acpi.h"
57 #include "accommon.h"
58 #include "acapps.h"
59
60 #define ACPI_OPTION_ERROR(msg, badchar) \
61 if (AcpiGbl_Opterr) {fprintf (stderr, "%s%c\n", msg, badchar);}
62
63
64 int AcpiGbl_Opterr = 1;
65 int AcpiGbl_Optind = 1;
66 int AcpiGbl_SubOptChar = 0;
67 char *AcpiGbl_Optarg;
68
69 static int CurrentCharPtr = 1;
70
71
72 /*******************************************************************************
73 *
74 * FUNCTION: AcpiGetoptArgument
75 *
76 * PARAMETERS: argc, argv - from main
77 *
78 * RETURN: 0 if an argument was found, -1 otherwise. Sets AcpiGbl_Optarg
79 * to point to the next argument.
80 *
81 * DESCRIPTION: Get the next argument. Used to obtain arguments for the
82 * two-character options after the original call to AcpiGetopt.
83 * Note: Either the argument starts at the next character after
84 * the option, or it is pointed to by the next argv entry.
85 * (After call to AcpiGetopt, we need to backup to the previous
86 * argv entry).
87 *
88 ******************************************************************************/
89
90 int
91 AcpiGetoptArgument (
92 int argc,
93 char **argv)
94 {
95 AcpiGbl_Optind--;
96 CurrentCharPtr++;
97
98 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
99 {
100 AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
101 }
102 else if (++AcpiGbl_Optind >= argc)
103 {
104 ACPI_OPTION_ERROR ("Option requires an argument: -", 'v');
105
106 CurrentCharPtr = 1;
107 return (-1);
108 }
109 else
110 {
111 AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
112 }
113
114 CurrentCharPtr = 1;
115 return (0);
116 }
117
118
119 /*******************************************************************************
120 *
121 * FUNCTION: AcpiGetopt
122 *
123 * PARAMETERS: argc, argv - from main
124 * opts - options info list
125 *
126 * RETURN: Option character or EOF
127 *
128 * DESCRIPTION: Get the next option
129 *
130 ******************************************************************************/
131
132 int
133 AcpiGetopt(
134 int argc,
135 char **argv,
136 char *opts)
137 {
138 int CurrentChar;
139 char *OptsPtr;
140
141
142 if (CurrentCharPtr == 1)
143 {
144 if (AcpiGbl_Optind >= argc ||
145 argv[AcpiGbl_Optind][0] != '-' ||
146 argv[AcpiGbl_Optind][1] == '\0')
147 {
148 return (EOF);
149 }
150 else if (strcmp (argv[AcpiGbl_Optind], "--") == 0)
151 {
152 AcpiGbl_Optind++;
153 return (EOF);
154 }
155 }
156
157 /* Get the option */
158
159 CurrentChar = argv[AcpiGbl_Optind][CurrentCharPtr];
160
161 /* Make sure that the option is legal */
162
163 if (CurrentChar == ':' ||
164 (OptsPtr = strchr (opts, CurrentChar)) == NULL)
165 {
166 ACPI_OPTION_ERROR ("Illegal option: -", CurrentChar);
167
168 if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
169 {
170 AcpiGbl_Optind++;
171 CurrentCharPtr = 1;
172 }
173
174 return ('?');
175 }
176
177 /* Option requires an argument? */
178
179 if (*++OptsPtr == ':')
180 {
181 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
182 {
183 AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
184 }
185 else if (++AcpiGbl_Optind >= argc)
186 {
187 ACPI_OPTION_ERROR ("Option requires an argument: -", CurrentChar);
188
189 CurrentCharPtr = 1;
190 return ('?');
191 }
192 else
193 {
194 AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
195 }
196
197 CurrentCharPtr = 1;
198 }
199
200 /* Option has an optional argument? */
201
202 else if (*OptsPtr == '+')
203 {
204 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
205 {
206 AcpiGbl_Optarg = &argv[AcpiGbl_Optind++][(int) (CurrentCharPtr+1)];
207 }
208 else if (++AcpiGbl_Optind >= argc)
209 {
210 AcpiGbl_Optarg = NULL;
211 }
212 else
213 {
214 AcpiGbl_Optarg = argv[AcpiGbl_Optind++];
215 }
216
217 CurrentCharPtr = 1;
218 }
219
220 /* Option has optional single-char arguments? */
221
222 else if (*OptsPtr == '^')
223 {
224 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
225 {
226 AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)];
227 }
228 else
229 {
230 AcpiGbl_Optarg = "^";
231 }
232
233 AcpiGbl_SubOptChar = AcpiGbl_Optarg[0];
234 AcpiGbl_Optind++;
235 CurrentCharPtr = 1;
236 }
237
238 /* Option has a required single-char argument? */
239
240 else if (*OptsPtr == '|')
241 {
242 if (argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)] != '\0')
243 {
244 AcpiGbl_Optarg = &argv[AcpiGbl_Optind][(int) (CurrentCharPtr+1)];
245 }
246 else
247 {
248 ACPI_OPTION_ERROR ("Option requires a single-character suboption: -", CurrentChar);
249
250 CurrentCharPtr = 1;
251 return ('?');
252 }
253
254 AcpiGbl_SubOptChar = AcpiGbl_Optarg[0];
255 AcpiGbl_Optind++;
256 CurrentCharPtr = 1;
257 }
258
259 /* Option with no arguments */
260
261 else
262 {
263 if (argv[AcpiGbl_Optind][++CurrentCharPtr] == '\0')
264 {
265 CurrentCharPtr = 1;
266 AcpiGbl_Optind++;
267 }
268
269 AcpiGbl_Optarg = NULL;
270 }
271
272 return (CurrentChar);
273 }