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6b8f5ad1 PT |
1 | /* |
2 | * Copyright 2000-2009 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
a6142706 YS |
24 | /* |
25 | * Define _STDBOOL_H here to avoid macro expansion of true and false. | |
26 | * If the future code requires macro true or false, remove this define | |
27 | * and undef true and false before U_BOOT_CMD. This define and comment | |
28 | * shall be removed if change to U_BOOT_CMD is made to take string | |
29 | * instead of stringifying it. | |
30 | */ | |
31 | #define _STDBOOL_H | |
32 | ||
6b8f5ad1 PT |
33 | #include <common.h> |
34 | #include <command.h> | |
35 | ||
088f1b19 | 36 | static int do_test(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
6b8f5ad1 | 37 | { |
54841ab5 | 38 | char * const *ap; |
6b8f5ad1 PT |
39 | int left, adv, expr, last_expr, neg, last_cmp; |
40 | ||
41 | /* args? */ | |
42 | if (argc < 3) | |
43 | return 1; | |
44 | ||
b0fe6abd | 45 | #ifdef DEBUG |
6b8f5ad1 | 46 | { |
b0fe6abd | 47 | debug("test(%d):", argc); |
6b8f5ad1 PT |
48 | left = 1; |
49 | while (argv[left]) | |
b0fe6abd | 50 | debug(" '%s'", argv[left++]); |
6b8f5ad1 PT |
51 | } |
52 | #endif | |
53 | ||
54 | last_expr = 0; | |
55 | left = argc - 1; ap = argv + 1; | |
56 | if (left > 0 && strcmp(ap[0], "!") == 0) { | |
57 | neg = 1; | |
58 | ap++; | |
59 | left--; | |
60 | } else | |
61 | neg = 0; | |
62 | ||
63 | expr = -1; | |
64 | last_cmp = -1; | |
65 | last_expr = -1; | |
66 | while (left > 0) { | |
67 | ||
68 | if (strcmp(ap[0], "-o") == 0 || strcmp(ap[0], "-a") == 0) | |
69 | adv = 1; | |
70 | else if (strcmp(ap[0], "-z") == 0 || strcmp(ap[0], "-n") == 0) | |
71 | adv = 2; | |
72 | else | |
73 | adv = 3; | |
74 | ||
75 | if (left < adv) { | |
76 | expr = 1; | |
77 | break; | |
78 | } | |
79 | ||
80 | if (adv == 1) { | |
81 | if (strcmp(ap[0], "-o") == 0) { | |
82 | last_expr = expr; | |
83 | last_cmp = 0; | |
84 | } else if (strcmp(ap[0], "-a") == 0) { | |
85 | last_expr = expr; | |
86 | last_cmp = 1; | |
87 | } else { | |
88 | expr = 1; | |
89 | break; | |
90 | } | |
91 | } | |
92 | ||
93 | if (adv == 2) { | |
94 | if (strcmp(ap[0], "-z") == 0) | |
95 | expr = strlen(ap[1]) == 0 ? 1 : 0; | |
96 | else if (strcmp(ap[0], "-n") == 0) | |
97 | expr = strlen(ap[1]) == 0 ? 0 : 1; | |
98 | else { | |
99 | expr = 1; | |
100 | break; | |
101 | } | |
102 | ||
103 | if (last_cmp == 0) | |
104 | expr = last_expr || expr; | |
105 | else if (last_cmp == 1) | |
106 | expr = last_expr && expr; | |
107 | last_cmp = -1; | |
108 | } | |
109 | ||
110 | if (adv == 3) { | |
111 | if (strcmp(ap[1], "=") == 0) | |
112 | expr = strcmp(ap[0], ap[2]) == 0; | |
113 | else if (strcmp(ap[1], "!=") == 0) | |
114 | expr = strcmp(ap[0], ap[2]) != 0; | |
115 | else if (strcmp(ap[1], ">") == 0) | |
116 | expr = strcmp(ap[0], ap[2]) > 0; | |
117 | else if (strcmp(ap[1], "<") == 0) | |
118 | expr = strcmp(ap[0], ap[2]) < 0; | |
119 | else if (strcmp(ap[1], "-eq") == 0) | |
120 | expr = simple_strtol(ap[0], NULL, 10) == simple_strtol(ap[2], NULL, 10); | |
121 | else if (strcmp(ap[1], "-ne") == 0) | |
122 | expr = simple_strtol(ap[0], NULL, 10) != simple_strtol(ap[2], NULL, 10); | |
123 | else if (strcmp(ap[1], "-lt") == 0) | |
124 | expr = simple_strtol(ap[0], NULL, 10) < simple_strtol(ap[2], NULL, 10); | |
125 | else if (strcmp(ap[1], "-le") == 0) | |
126 | expr = simple_strtol(ap[0], NULL, 10) <= simple_strtol(ap[2], NULL, 10); | |
127 | else if (strcmp(ap[1], "-gt") == 0) | |
128 | expr = simple_strtol(ap[0], NULL, 10) > simple_strtol(ap[2], NULL, 10); | |
129 | else if (strcmp(ap[1], "-ge") == 0) | |
130 | expr = simple_strtol(ap[0], NULL, 10) >= simple_strtol(ap[2], NULL, 10); | |
131 | else { | |
132 | expr = 1; | |
133 | break; | |
134 | } | |
135 | ||
136 | if (last_cmp == 0) | |
137 | expr = last_expr || expr; | |
138 | else if (last_cmp == 1) | |
139 | expr = last_expr && expr; | |
140 | last_cmp = -1; | |
141 | } | |
142 | ||
143 | ap += adv; left -= adv; | |
144 | } | |
145 | ||
146 | if (neg) | |
147 | expr = !expr; | |
148 | ||
149 | expr = !expr; | |
150 | ||
151 | debug (": returns %d\n", expr); | |
152 | ||
153 | return expr; | |
154 | } | |
155 | ||
156 | U_BOOT_CMD( | |
157 | test, CONFIG_SYS_MAXARGS, 1, do_test, | |
158 | "minimal test like /bin/sh", | |
159 | "[args..]" | |
160 | ); | |
396fd173 | 161 | |
088f1b19 | 162 | static int do_false(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
396fd173 PT |
163 | { |
164 | return 1; | |
165 | } | |
166 | ||
167 | U_BOOT_CMD( | |
168 | false, CONFIG_SYS_MAXARGS, 1, do_false, | |
169 | "do nothing, unsuccessfully", | |
170 | NULL | |
171 | ); | |
172 | ||
088f1b19 | 173 | static int do_true(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
396fd173 PT |
174 | { |
175 | return 0; | |
176 | } | |
177 | ||
178 | U_BOOT_CMD( | |
179 | true, CONFIG_SYS_MAXARGS, 1, do_true, | |
180 | "do nothing, successfully", | |
181 | NULL | |
182 | ); |