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506f57dd LZ |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: getopt | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
82a80941 | 8 | * Copyright (C) 2000 - 2015, 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 | |
50 | * "f^" - Option has optional single-char sub-options | |
51 | * "f|" - Option has required single-char sub-options | |
52 | */ | |
53 | ||
506f57dd LZ |
54 | #include <acpi/acpi.h> |
55 | #include "accommon.h" | |
56 | #include "acapps.h" | |
57 | ||
58 | #define ACPI_OPTION_ERROR(msg, badchar) \ | |
a92e9577 | 59 | if (acpi_gbl_opterr) {acpi_log_error ("%s%c\n", msg, badchar);} |
506f57dd LZ |
60 | |
61 | int acpi_gbl_opterr = 1; | |
62 | int acpi_gbl_optind = 1; | |
63 | int acpi_gbl_sub_opt_char = 0; | |
64 | char *acpi_gbl_optarg; | |
65 | ||
66 | static int current_char_ptr = 1; | |
67 | ||
68 | /******************************************************************************* | |
69 | * | |
70 | * FUNCTION: acpi_getopt_argument | |
71 | * | |
72 | * PARAMETERS: argc, argv - from main | |
73 | * | |
74 | * RETURN: 0 if an argument was found, -1 otherwise. Sets acpi_gbl_Optarg | |
75 | * to point to the next argument. | |
76 | * | |
77 | * DESCRIPTION: Get the next argument. Used to obtain arguments for the | |
78 | * two-character options after the original call to acpi_getopt. | |
79 | * Note: Either the argument starts at the next character after | |
80 | * the option, or it is pointed to by the next argv entry. | |
81 | * (After call to acpi_getopt, we need to backup to the previous | |
82 | * argv entry). | |
83 | * | |
84 | ******************************************************************************/ | |
85 | ||
86 | int acpi_getopt_argument(int argc, char **argv) | |
87 | { | |
88 | acpi_gbl_optind--; | |
89 | current_char_ptr++; | |
90 | ||
91 | if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') { | |
92 | acpi_gbl_optarg = | |
93 | &argv[acpi_gbl_optind++][(int)(current_char_ptr + 1)]; | |
94 | } else if (++acpi_gbl_optind >= argc) { | |
95 | ACPI_OPTION_ERROR("Option requires an argument: -", 'v'); | |
96 | ||
97 | current_char_ptr = 1; | |
98 | return (-1); | |
99 | } else { | |
100 | acpi_gbl_optarg = argv[acpi_gbl_optind++]; | |
101 | } | |
102 | ||
103 | current_char_ptr = 1; | |
104 | return (0); | |
105 | } | |
106 | ||
107 | /******************************************************************************* | |
108 | * | |
109 | * FUNCTION: acpi_getopt | |
110 | * | |
111 | * PARAMETERS: argc, argv - from main | |
112 | * opts - options info list | |
113 | * | |
a92e9577 | 114 | * RETURN: Option character or ACPI_OPT_END |
506f57dd LZ |
115 | * |
116 | * DESCRIPTION: Get the next option | |
117 | * | |
118 | ******************************************************************************/ | |
119 | ||
120 | int acpi_getopt(int argc, char **argv, char *opts) | |
121 | { | |
122 | int current_char; | |
123 | char *opts_ptr; | |
124 | ||
125 | if (current_char_ptr == 1) { | |
126 | if (acpi_gbl_optind >= argc || | |
127 | argv[acpi_gbl_optind][0] != '-' || | |
128 | argv[acpi_gbl_optind][1] == '\0') { | |
a92e9577 LZ |
129 | return (ACPI_OPT_END); |
130 | } else if (ACPI_STRCMP(argv[acpi_gbl_optind], "--") == 0) { | |
506f57dd | 131 | acpi_gbl_optind++; |
a92e9577 | 132 | return (ACPI_OPT_END); |
506f57dd LZ |
133 | } |
134 | } | |
135 | ||
136 | /* Get the option */ | |
137 | ||
138 | current_char = argv[acpi_gbl_optind][current_char_ptr]; | |
139 | ||
140 | /* Make sure that the option is legal */ | |
141 | ||
142 | if (current_char == ':' || | |
a92e9577 | 143 | (opts_ptr = ACPI_STRCHR(opts, current_char)) == NULL) { |
506f57dd LZ |
144 | ACPI_OPTION_ERROR("Illegal option: -", current_char); |
145 | ||
146 | if (argv[acpi_gbl_optind][++current_char_ptr] == '\0') { | |
147 | acpi_gbl_optind++; | |
148 | current_char_ptr = 1; | |
149 | } | |
150 | ||
151 | return ('?'); | |
152 | } | |
153 | ||
154 | /* Option requires an argument? */ | |
155 | ||
156 | if (*++opts_ptr == ':') { | |
157 | if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') { | |
158 | acpi_gbl_optarg = | |
159 | &argv[acpi_gbl_optind++][(int) | |
160 | (current_char_ptr + 1)]; | |
161 | } else if (++acpi_gbl_optind >= argc) { | |
162 | ACPI_OPTION_ERROR("Option requires an argument: -", | |
163 | current_char); | |
164 | ||
165 | current_char_ptr = 1; | |
166 | return ('?'); | |
167 | } else { | |
168 | acpi_gbl_optarg = argv[acpi_gbl_optind++]; | |
169 | } | |
170 | ||
171 | current_char_ptr = 1; | |
172 | } | |
173 | ||
174 | /* Option has an optional argument? */ | |
175 | ||
176 | else if (*opts_ptr == '+') { | |
177 | if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') { | |
178 | acpi_gbl_optarg = | |
179 | &argv[acpi_gbl_optind++][(int) | |
180 | (current_char_ptr + 1)]; | |
181 | } else if (++acpi_gbl_optind >= argc) { | |
182 | acpi_gbl_optarg = NULL; | |
183 | } else { | |
184 | acpi_gbl_optarg = argv[acpi_gbl_optind++]; | |
185 | } | |
186 | ||
187 | current_char_ptr = 1; | |
188 | } | |
189 | ||
190 | /* Option has optional single-char arguments? */ | |
191 | ||
192 | else if (*opts_ptr == '^') { | |
193 | if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') { | |
194 | acpi_gbl_optarg = | |
195 | &argv[acpi_gbl_optind][(int)(current_char_ptr + 1)]; | |
196 | } else { | |
197 | acpi_gbl_optarg = "^"; | |
198 | } | |
199 | ||
200 | acpi_gbl_sub_opt_char = acpi_gbl_optarg[0]; | |
201 | acpi_gbl_optind++; | |
202 | current_char_ptr = 1; | |
203 | } | |
204 | ||
205 | /* Option has a required single-char argument? */ | |
206 | ||
207 | else if (*opts_ptr == '|') { | |
208 | if (argv[acpi_gbl_optind][(int)(current_char_ptr + 1)] != '\0') { | |
209 | acpi_gbl_optarg = | |
210 | &argv[acpi_gbl_optind][(int)(current_char_ptr + 1)]; | |
211 | } else { | |
212 | ACPI_OPTION_ERROR | |
213 | ("Option requires a single-character suboption: -", | |
214 | current_char); | |
215 | ||
216 | current_char_ptr = 1; | |
217 | return ('?'); | |
218 | } | |
219 | ||
220 | acpi_gbl_sub_opt_char = acpi_gbl_optarg[0]; | |
221 | acpi_gbl_optind++; | |
222 | current_char_ptr = 1; | |
223 | } | |
224 | ||
225 | /* Option with no arguments */ | |
226 | ||
227 | else { | |
228 | if (argv[acpi_gbl_optind][++current_char_ptr] == '\0') { | |
229 | current_char_ptr = 1; | |
230 | acpi_gbl_optind++; | |
231 | } | |
232 | ||
233 | acpi_gbl_optarg = NULL; | |
234 | } | |
235 | ||
236 | return (current_char); | |
237 | } |