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1 | /* | |
2 | * Copyright 2000-2009 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | #include <common.h> | |
9 | #include <command.h> | |
10 | #include <fs.h> | |
11 | ||
12 | #define OP_INVALID 0 | |
13 | #define OP_NOT 1 | |
14 | #define OP_OR 2 | |
15 | #define OP_AND 3 | |
16 | #define OP_STR_EMPTY 4 | |
17 | #define OP_STR_NEMPTY 5 | |
18 | #define OP_STR_EQ 6 | |
19 | #define OP_STR_NEQ 7 | |
20 | #define OP_STR_LT 8 | |
21 | #define OP_STR_GT 9 | |
22 | #define OP_INT_EQ 10 | |
23 | #define OP_INT_NEQ 11 | |
24 | #define OP_INT_LT 12 | |
25 | #define OP_INT_LE 13 | |
26 | #define OP_INT_GT 14 | |
27 | #define OP_INT_GE 15 | |
28 | #define OP_FILE_EXISTS 16 | |
29 | ||
30 | const struct { | |
31 | int arg; | |
32 | const char *str; | |
33 | int op; | |
34 | int adv; | |
35 | } op_adv[] = { | |
36 | {1, "=", OP_STR_EQ, 3}, | |
37 | {1, "!=", OP_STR_NEQ, 3}, | |
38 | {1, "<", OP_STR_LT, 3}, | |
39 | {1, ">", OP_STR_GT, 3}, | |
40 | {1, "-eq", OP_INT_EQ, 3}, | |
41 | {1, "-ne", OP_INT_NEQ, 3}, | |
42 | {1, "-lt", OP_INT_LT, 3}, | |
43 | {1, "-le", OP_INT_LE, 3}, | |
44 | {1, "-gt", OP_INT_GT, 3}, | |
45 | {1, "-ge", OP_INT_GE, 3}, | |
46 | {0, "!", OP_NOT, 1}, | |
47 | {0, "-o", OP_OR, 1}, | |
48 | {0, "-a", OP_AND, 1}, | |
49 | {0, "-z", OP_STR_EMPTY, 2}, | |
50 | {0, "-n", OP_STR_NEMPTY, 2}, | |
51 | {0, "-e", OP_FILE_EXISTS, 4}, | |
52 | }; | |
53 | ||
54 | static int do_test(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
55 | { | |
56 | char * const *ap; | |
57 | int i, op, left, adv, expr, last_expr, last_unop, last_binop; | |
58 | ||
59 | /* args? */ | |
60 | if (argc < 3) | |
61 | return 1; | |
62 | ||
63 | #ifdef DEBUG | |
64 | { | |
65 | debug("test(%d):", argc); | |
66 | left = 1; | |
67 | while (argv[left]) | |
68 | debug(" '%s'", argv[left++]); | |
69 | } | |
70 | #endif | |
71 | ||
72 | left = argc - 1; | |
73 | ap = argv + 1; | |
74 | expr = 0; | |
75 | last_unop = OP_INVALID; | |
76 | last_binop = OP_INVALID; | |
77 | last_expr = -1; | |
78 | while (left > 0) { | |
79 | for (i = 0; i < ARRAY_SIZE(op_adv); i++) { | |
80 | if (left <= op_adv[i].arg) | |
81 | continue; | |
82 | if (!strcmp(ap[op_adv[i].arg], op_adv[i].str)) { | |
83 | op = op_adv[i].op; | |
84 | adv = op_adv[i].adv; | |
85 | break; | |
86 | } | |
87 | } | |
88 | if (i == ARRAY_SIZE(op_adv)) { | |
89 | expr = 1; | |
90 | break; | |
91 | } | |
92 | if (left < adv) { | |
93 | expr = 1; | |
94 | break; | |
95 | } | |
96 | ||
97 | switch (op) { | |
98 | case OP_STR_EMPTY: | |
99 | expr = strlen(ap[1]) == 0 ? 1 : 0; | |
100 | break; | |
101 | case OP_STR_NEMPTY: | |
102 | expr = strlen(ap[1]) == 0 ? 0 : 1; | |
103 | break; | |
104 | case OP_STR_EQ: | |
105 | expr = strcmp(ap[0], ap[2]) == 0; | |
106 | break; | |
107 | case OP_STR_NEQ: | |
108 | expr = strcmp(ap[0], ap[2]) != 0; | |
109 | break; | |
110 | case OP_STR_LT: | |
111 | expr = strcmp(ap[0], ap[2]) < 0; | |
112 | break; | |
113 | case OP_STR_GT: | |
114 | expr = strcmp(ap[0], ap[2]) > 0; | |
115 | break; | |
116 | case OP_INT_EQ: | |
117 | expr = simple_strtol(ap[0], NULL, 10) == | |
118 | simple_strtol(ap[2], NULL, 10); | |
119 | break; | |
120 | case OP_INT_NEQ: | |
121 | expr = simple_strtol(ap[0], NULL, 10) != | |
122 | simple_strtol(ap[2], NULL, 10); | |
123 | break; | |
124 | case OP_INT_LT: | |
125 | expr = simple_strtol(ap[0], NULL, 10) < | |
126 | simple_strtol(ap[2], NULL, 10); | |
127 | break; | |
128 | case OP_INT_LE: | |
129 | expr = simple_strtol(ap[0], NULL, 10) <= | |
130 | simple_strtol(ap[2], NULL, 10); | |
131 | break; | |
132 | case OP_INT_GT: | |
133 | expr = simple_strtol(ap[0], NULL, 10) > | |
134 | simple_strtol(ap[2], NULL, 10); | |
135 | break; | |
136 | case OP_INT_GE: | |
137 | expr = simple_strtol(ap[0], NULL, 10) >= | |
138 | simple_strtol(ap[2], NULL, 10); | |
139 | break; | |
140 | case OP_FILE_EXISTS: | |
141 | expr = file_exists(ap[1], ap[2], ap[3], FS_TYPE_ANY); | |
142 | break; | |
143 | } | |
144 | ||
145 | switch (op) { | |
146 | case OP_OR: | |
147 | last_expr = expr; | |
148 | last_binop = OP_OR; | |
149 | break; | |
150 | case OP_AND: | |
151 | last_expr = expr; | |
152 | last_binop = OP_AND; | |
153 | break; | |
154 | case OP_NOT: | |
155 | if (last_unop == OP_NOT) | |
156 | last_unop = OP_INVALID; | |
157 | else | |
158 | last_unop = OP_NOT; | |
159 | break; | |
160 | default: | |
161 | if (last_unop == OP_NOT) { | |
162 | expr = !expr; | |
163 | last_unop = OP_INVALID; | |
164 | } | |
165 | ||
166 | if (last_binop == OP_OR) | |
167 | expr = last_expr || expr; | |
168 | else if (last_binop == OP_AND) | |
169 | expr = last_expr && expr; | |
170 | last_binop = OP_INVALID; | |
171 | ||
172 | break; | |
173 | } | |
174 | ||
175 | ap += adv; left -= adv; | |
176 | } | |
177 | ||
178 | expr = !expr; | |
179 | ||
180 | debug (": returns %d\n", expr); | |
181 | ||
182 | return expr; | |
183 | } | |
184 | ||
185 | #undef true | |
186 | #undef false | |
187 | ||
188 | U_BOOT_CMD( | |
189 | test, CONFIG_SYS_MAXARGS, 1, do_test, | |
190 | "minimal test like /bin/sh", | |
191 | "[args..]" | |
192 | ); | |
193 | ||
194 | static int do_false(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
195 | { | |
196 | return 1; | |
197 | } | |
198 | ||
199 | U_BOOT_CMD( | |
200 | false, CONFIG_SYS_MAXARGS, 1, do_false, | |
201 | "do nothing, unsuccessfully", | |
202 | NULL | |
203 | ); | |
204 | ||
205 | static int do_true(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
206 | { | |
207 | return 0; | |
208 | } | |
209 | ||
210 | U_BOOT_CMD( | |
211 | true, CONFIG_SYS_MAXARGS, 1, do_true, | |
212 | "do nothing, successfully", | |
213 | NULL | |
214 | ); |