1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/*
* test.c - sh like test
*
* Originally based on U-Boots do_test, but mostly reimplemented
* for smaller binary size
*
* Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <common.h>
#include <command.h>
typedef enum {
OPT_EQUAL,
OPT_NOT_EQUAL,
OPT_ARITH_EQUAL,
OPT_ARITH_NOT_EQUAL,
OPT_ARITH_GREATER_EQUAL,
OPT_ARITH_GREATER_THAN,
OPT_ARITH_LESS_EQUAL,
OPT_ARITH_LESS_THAN,
OPT_OR,
OPT_AND,
OPT_ZERO,
OPT_NONZERO,
OPT_MAX,
} test_opts;
static char *test_options[] = {
[OPT_EQUAL] = "=",
[OPT_NOT_EQUAL] = "!=",
[OPT_ARITH_EQUAL] = "-eq",
[OPT_ARITH_NOT_EQUAL] = "-ne",
[OPT_ARITH_GREATER_EQUAL] = "-ge",
[OPT_ARITH_GREATER_THAN] = "-gt",
[OPT_ARITH_LESS_EQUAL] = "-le",
[OPT_ARITH_LESS_THAN] = "-lt",
[OPT_OR] = "-o",
[OPT_AND] = "-a",
[OPT_ZERO] = "-z",
[OPT_NONZERO] = "-n",
};
static int parse_opt(const char *opt)
{
char **opts = test_options;
int i;
for (i = 0; i < OPT_MAX; i++) {
if (!strcmp(opts[i], opt))
return i;
}
return -1;
}
int
do_test (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
char **ap;
int left, adv, expr, last_expr, neg, last_cmp, opt, zero;
ulong a, b;
if (*argv[0] == '[') {
if (*argv[argc - 1] != ']') {
printf("[: missing `]'\n");
return 1;
}
argc--;
}
/* args? */
if (argc < 2)
return 1;
last_expr = 0;
left = argc - 1;
ap = argv + 1;
if (strcmp(ap[0], "!") == 0) {
neg = 1;
ap++;
left--;
} else
neg = 0;
expr = -1;
last_cmp = -1;
last_expr = -1;
adv = 0;
while (left - adv > 0) {
ap += adv; left -= adv;
adv = 1;
opt = parse_opt(ap[0]);
switch (opt) {
/* one argument options */
case OPT_OR:
last_expr = expr;
last_cmp = 0;
continue;
case OPT_AND:
last_expr = expr;
last_cmp = 1;
continue;
/* two argument options */
case OPT_ZERO:
case OPT_NONZERO:
adv = 2;
zero = 1;
if (ap[1] && *ap[1] != ']' && strlen(ap[1]))
zero = 0;
expr = (opt == OPT_ZERO) ? zero : !zero;
break;
/* three argument options */
default:
adv = 3;
if (left < 3) {
expr = 1;
break;
}
a = simple_strtol(ap[0], NULL, 0);
b = simple_strtol(ap[2], NULL, 0);
switch (parse_opt(ap[1])) {
case OPT_EQUAL:
expr = strcmp(ap[0], ap[2]) == 0;
break;
case OPT_NOT_EQUAL:
expr = strcmp(ap[0], ap[2]) != 0;
break;
case OPT_ARITH_EQUAL:
printf("equal: %d %d\n", a, b);
expr = a == b;
break;
case OPT_ARITH_NOT_EQUAL:
expr = a != b;
break;
case OPT_ARITH_LESS_THAN:
expr = a < b;
break;
case OPT_ARITH_LESS_EQUAL:
expr = a <= b;
break;
case OPT_ARITH_GREATER_THAN:
expr = a > b;
break;
case OPT_ARITH_GREATER_EQUAL:
expr = a >= b;
break;
default:
expr = 1;
goto out;
}
}
if (last_cmp == 0)
expr = last_expr || expr;
else if (last_cmp == 1)
expr = last_expr && expr;
last_cmp = -1;
}
out:
if (neg)
expr = !expr;
expr = !expr;
return expr;
}
char *test_aliases[] = { "[", NULL};
static __maybe_unused char cmd_test_help[] =
"Usage: test [OPTIONS]\n"
"options: !, =, !=, -eq, -ne, -ge, -gt, -le, -lt, -o, -a, -z, -n\n"
"see 'man test' on your PC for more information.\n";
U_BOOT_CMD_START(test)
.aliases = test_aliases,
.maxargs = CONFIG_MAXARGS,
.cmd = do_test,
.usage = "minimal test like /bin/sh",
U_BOOT_CMD_HELP(cmd_test_help)
U_BOOT_CMD_END
|
