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#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
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