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6b8f5ad1 PT |
1 | /* |
2 | * Copyright 2000-2009 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
6b8f5ad1 PT |
6 | */ |
7 | ||
a6142706 YS |
8 | /* |
9 | * Define _STDBOOL_H here to avoid macro expansion of true and false. | |
10 | * If the future code requires macro true or false, remove this define | |
11 | * and undef true and false before U_BOOT_CMD. This define and comment | |
12 | * shall be removed if change to U_BOOT_CMD is made to take string | |
13 | * instead of stringifying it. | |
14 | */ | |
15 | #define _STDBOOL_H | |
16 | ||
6b8f5ad1 PT |
17 | #include <common.h> |
18 | #include <command.h> | |
19 | ||
088f1b19 | 20 | static int do_test(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
6b8f5ad1 | 21 | { |
54841ab5 | 22 | char * const *ap; |
6b8f5ad1 PT |
23 | int left, adv, expr, last_expr, neg, last_cmp; |
24 | ||
25 | /* args? */ | |
26 | if (argc < 3) | |
27 | return 1; | |
28 | ||
b0fe6abd | 29 | #ifdef DEBUG |
6b8f5ad1 | 30 | { |
b0fe6abd | 31 | debug("test(%d):", argc); |
6b8f5ad1 PT |
32 | left = 1; |
33 | while (argv[left]) | |
b0fe6abd | 34 | debug(" '%s'", argv[left++]); |
6b8f5ad1 PT |
35 | } |
36 | #endif | |
37 | ||
38 | last_expr = 0; | |
39 | left = argc - 1; ap = argv + 1; | |
40 | if (left > 0 && strcmp(ap[0], "!") == 0) { | |
41 | neg = 1; | |
42 | ap++; | |
43 | left--; | |
44 | } else | |
45 | neg = 0; | |
46 | ||
47 | expr = -1; | |
48 | last_cmp = -1; | |
49 | last_expr = -1; | |
50 | while (left > 0) { | |
51 | ||
52 | if (strcmp(ap[0], "-o") == 0 || strcmp(ap[0], "-a") == 0) | |
53 | adv = 1; | |
54 | else if (strcmp(ap[0], "-z") == 0 || strcmp(ap[0], "-n") == 0) | |
55 | adv = 2; | |
56 | else | |
57 | adv = 3; | |
58 | ||
59 | if (left < adv) { | |
60 | expr = 1; | |
61 | break; | |
62 | } | |
63 | ||
64 | if (adv == 1) { | |
65 | if (strcmp(ap[0], "-o") == 0) { | |
66 | last_expr = expr; | |
67 | last_cmp = 0; | |
68 | } else if (strcmp(ap[0], "-a") == 0) { | |
69 | last_expr = expr; | |
70 | last_cmp = 1; | |
71 | } else { | |
72 | expr = 1; | |
73 | break; | |
74 | } | |
75 | } | |
76 | ||
77 | if (adv == 2) { | |
78 | if (strcmp(ap[0], "-z") == 0) | |
79 | expr = strlen(ap[1]) == 0 ? 1 : 0; | |
80 | else if (strcmp(ap[0], "-n") == 0) | |
81 | expr = strlen(ap[1]) == 0 ? 0 : 1; | |
82 | else { | |
83 | expr = 1; | |
84 | break; | |
85 | } | |
86 | ||
87 | if (last_cmp == 0) | |
88 | expr = last_expr || expr; | |
89 | else if (last_cmp == 1) | |
90 | expr = last_expr && expr; | |
91 | last_cmp = -1; | |
92 | } | |
93 | ||
94 | if (adv == 3) { | |
95 | if (strcmp(ap[1], "=") == 0) | |
96 | expr = strcmp(ap[0], ap[2]) == 0; | |
97 | else if (strcmp(ap[1], "!=") == 0) | |
98 | expr = strcmp(ap[0], ap[2]) != 0; | |
99 | else if (strcmp(ap[1], ">") == 0) | |
100 | expr = strcmp(ap[0], ap[2]) > 0; | |
101 | else if (strcmp(ap[1], "<") == 0) | |
102 | expr = strcmp(ap[0], ap[2]) < 0; | |
103 | else if (strcmp(ap[1], "-eq") == 0) | |
104 | expr = simple_strtol(ap[0], NULL, 10) == simple_strtol(ap[2], NULL, 10); | |
105 | else if (strcmp(ap[1], "-ne") == 0) | |
106 | expr = simple_strtol(ap[0], NULL, 10) != simple_strtol(ap[2], NULL, 10); | |
107 | else if (strcmp(ap[1], "-lt") == 0) | |
108 | expr = simple_strtol(ap[0], NULL, 10) < simple_strtol(ap[2], NULL, 10); | |
109 | else if (strcmp(ap[1], "-le") == 0) | |
110 | expr = simple_strtol(ap[0], NULL, 10) <= simple_strtol(ap[2], NULL, 10); | |
111 | else if (strcmp(ap[1], "-gt") == 0) | |
112 | expr = simple_strtol(ap[0], NULL, 10) > simple_strtol(ap[2], NULL, 10); | |
113 | else if (strcmp(ap[1], "-ge") == 0) | |
114 | expr = simple_strtol(ap[0], NULL, 10) >= simple_strtol(ap[2], NULL, 10); | |
115 | else { | |
116 | expr = 1; | |
117 | break; | |
118 | } | |
119 | ||
120 | if (last_cmp == 0) | |
121 | expr = last_expr || expr; | |
122 | else if (last_cmp == 1) | |
123 | expr = last_expr && expr; | |
124 | last_cmp = -1; | |
125 | } | |
126 | ||
127 | ap += adv; left -= adv; | |
128 | } | |
129 | ||
130 | if (neg) | |
131 | expr = !expr; | |
132 | ||
133 | expr = !expr; | |
134 | ||
135 | debug (": returns %d\n", expr); | |
136 | ||
137 | return expr; | |
138 | } | |
139 | ||
140 | U_BOOT_CMD( | |
141 | test, CONFIG_SYS_MAXARGS, 1, do_test, | |
142 | "minimal test like /bin/sh", | |
143 | "[args..]" | |
144 | ); | |
396fd173 | 145 | |
088f1b19 | 146 | static int do_false(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
396fd173 PT |
147 | { |
148 | return 1; | |
149 | } | |
150 | ||
151 | U_BOOT_CMD( | |
152 | false, CONFIG_SYS_MAXARGS, 1, do_false, | |
153 | "do nothing, unsuccessfully", | |
154 | NULL | |
155 | ); | |
156 | ||
088f1b19 | 157 | static int do_true(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
396fd173 PT |
158 | { |
159 | return 0; | |
160 | } | |
161 | ||
162 | U_BOOT_CMD( | |
163 | true, CONFIG_SYS_MAXARGS, 1, do_true, | |
164 | "do nothing, successfully", | |
165 | NULL | |
166 | ); |