Commit | Line | Data |
---|---|---|
506f57dd LZ |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: getopt | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
c8100dc4 | 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
506f57dd LZ |
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 | |
5920380c | 50 | * "f+" - Option has an optional argument |
506f57dd LZ |
51 | * "f^" - Option has optional single-char sub-options |
52 | * "f|" - Option has required single-char sub-options | |
53 | */ | |
54 | ||
506f57dd LZ |
55 | #include <acpi/acpi.h> |
56 | #include "accommon.h" | |
57 | #include "acapps.h" | |
58 | ||
59 | #define ACPI_OPTION_ERROR(msg, badchar) \ | |
dd99cbcc | 60 | if (acpi_gbl_opterr) {fprintf (stderr, "%s%c\n", msg, badchar);} |
506f57dd LZ |
61 | |
62 | int acpi_gbl_opterr = 1; | |
63 | int acpi_gbl_optind = 1; | |
64 | int acpi_gbl_sub_opt_char = 0; | |
65 | char *acpi_gbl_optarg; | |
66 | ||
67 | static int current_char_ptr = 1; | |
68 | ||
69 | /******************************************************************************* | |
70 | * | |
71 | * FUNCTION: acpi_getopt_argument | |
72 | * | |
73 | * PARAMETERS: argc, argv - from main | |
74 | * | |
75 | * RETURN: 0 if an argument was found, -1 otherwise. Sets acpi_gbl_Optarg | |
76 | * to point to the next argument. | |
77 | * | |
78 | * DESCRIPTION: Get the next argument. Used to obtain arguments for the | |
79 | * two-character options after the original call to acpi_getopt. | |
80 | * Note: Either the argument starts at the next character after | |
81 | * the option, or it is pointed to by the next argv entry. | |
82 | * (After call to acpi_getopt, we need to backup to the previous | |
83 | * argv entry). | |
84 | * | |
85 | ******************************************************************************/ | |
86 | ||
87 | int acpi_getopt_argument(int argc, char **argv) | |
88 | { | |
1fad8738 | 89 | |
506f57dd LZ |
90 | acpi_gbl_optind--; |
91 | current_char_ptr++; | |
92 | ||
93 | if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') { | |
94 | acpi_gbl_optarg = | |
95 | &argv[acpi_gbl_optind++][(int)(current_char_ptr + 1)]; | |
96 | } else if (++acpi_gbl_optind >= argc) { | |
d8303ace | 97 | ACPI_OPTION_ERROR("\nOption requires an argument", 0); |
506f57dd LZ |
98 | |
99 | current_char_ptr = 1; | |
100 | return (-1); | |
101 | } else { | |
102 | acpi_gbl_optarg = argv[acpi_gbl_optind++]; | |
103 | } | |
104 | ||
105 | current_char_ptr = 1; | |
106 | return (0); | |
107 | } | |
108 | ||
109 | /******************************************************************************* | |
110 | * | |
111 | * FUNCTION: acpi_getopt | |
112 | * | |
113 | * PARAMETERS: argc, argv - from main | |
114 | * opts - options info list | |
115 | * | |
a92e9577 | 116 | * RETURN: Option character or ACPI_OPT_END |
506f57dd LZ |
117 | * |
118 | * DESCRIPTION: Get the next option | |
119 | * | |
120 | ******************************************************************************/ | |
121 | ||
122 | int acpi_getopt(int argc, char **argv, char *opts) | |
123 | { | |
124 | int current_char; | |
125 | char *opts_ptr; | |
126 | ||
127 | if (current_char_ptr == 1) { | |
128 | if (acpi_gbl_optind >= argc || | |
129 | argv[acpi_gbl_optind][0] != '-' || | |
130 | argv[acpi_gbl_optind][1] == '\0') { | |
a92e9577 | 131 | return (ACPI_OPT_END); |
4fa4616e | 132 | } else if (strcmp(argv[acpi_gbl_optind], "--") == 0) { |
506f57dd | 133 | acpi_gbl_optind++; |
a92e9577 | 134 | return (ACPI_OPT_END); |
506f57dd LZ |
135 | } |
136 | } | |
137 | ||
138 | /* Get the option */ | |
139 | ||
140 | current_char = argv[acpi_gbl_optind][current_char_ptr]; | |
141 | ||
142 | /* Make sure that the option is legal */ | |
143 | ||
144 | if (current_char == ':' || | |
4fa4616e | 145 | (opts_ptr = strchr(opts, current_char)) == NULL) { |
506f57dd LZ |
146 | ACPI_OPTION_ERROR("Illegal option: -", current_char); |
147 | ||
148 | if (argv[acpi_gbl_optind][++current_char_ptr] == '\0') { | |
149 | acpi_gbl_optind++; | |
150 | current_char_ptr = 1; | |
151 | } | |
152 | ||
153 | return ('?'); | |
154 | } | |
155 | ||
156 | /* Option requires an argument? */ | |
157 | ||
158 | if (*++opts_ptr == ':') { | |
159 | if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') { | |
160 | acpi_gbl_optarg = | |
161 | &argv[acpi_gbl_optind++][(int) | |
162 | (current_char_ptr + 1)]; | |
163 | } else if (++acpi_gbl_optind >= argc) { | |
164 | ACPI_OPTION_ERROR("Option requires an argument: -", | |
165 | current_char); | |
166 | ||
167 | current_char_ptr = 1; | |
168 | return ('?'); | |
169 | } else { | |
170 | acpi_gbl_optarg = argv[acpi_gbl_optind++]; | |
171 | } | |
172 | ||
173 | current_char_ptr = 1; | |
174 | } | |
175 | ||
176 | /* Option has an optional argument? */ | |
177 | ||
178 | else if (*opts_ptr == '+') { | |
179 | if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') { | |
180 | acpi_gbl_optarg = | |
181 | &argv[acpi_gbl_optind++][(int) | |
182 | (current_char_ptr + 1)]; | |
183 | } else if (++acpi_gbl_optind >= argc) { | |
184 | acpi_gbl_optarg = NULL; | |
185 | } else { | |
186 | acpi_gbl_optarg = argv[acpi_gbl_optind++]; | |
187 | } | |
188 | ||
189 | current_char_ptr = 1; | |
190 | } | |
191 | ||
192 | /* Option has optional single-char arguments? */ | |
193 | ||
194 | else if (*opts_ptr == '^') { | |
195 | if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') { | |
196 | acpi_gbl_optarg = | |
197 | &argv[acpi_gbl_optind][(int)(current_char_ptr + 1)]; | |
198 | } else { | |
199 | acpi_gbl_optarg = "^"; | |
200 | } | |
201 | ||
202 | acpi_gbl_sub_opt_char = acpi_gbl_optarg[0]; | |
203 | acpi_gbl_optind++; | |
204 | current_char_ptr = 1; | |
205 | } | |
206 | ||
207 | /* Option has a required single-char argument? */ | |
208 | ||
209 | else if (*opts_ptr == '|') { | |
210 | if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') { | |
211 | acpi_gbl_optarg = | |
212 | &argv[acpi_gbl_optind][(int)(current_char_ptr + 1)]; | |
213 | } else { | |
214 | ACPI_OPTION_ERROR | |
215 | ("Option requires a single-character suboption: -", | |
216 | current_char); | |
217 | ||
218 | current_char_ptr = 1; | |
219 | return ('?'); | |
220 | } | |
221 | ||
222 | acpi_gbl_sub_opt_char = acpi_gbl_optarg[0]; | |
223 | acpi_gbl_optind++; | |
224 | current_char_ptr = 1; | |
225 | } | |
226 | ||
227 | /* Option with no arguments */ | |
228 | ||
229 | else { | |
230 | if (argv[acpi_gbl_optind][++current_char_ptr] == '\0') { | |
231 | current_char_ptr = 1; | |
232 | acpi_gbl_optind++; | |
233 | } | |
234 | ||
235 | acpi_gbl_optarg = NULL; | |
236 | } | |
237 | ||
238 | return (current_char); | |
239 | } |