u-boot/cmd/test.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

213 lines
4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2000-2009
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
#include <common.h>
#include <command.h>
#include <fs.h>
#define OP_INVALID 0
#define OP_NOT 1
#define OP_OR 2
#define OP_AND 3
#define OP_STR_EMPTY 4
#define OP_STR_NEMPTY 5
#define OP_STR_EQ 6
#define OP_STR_NEQ 7
#define OP_STR_LT 8
#define OP_STR_GT 9
#define OP_INT_EQ 10
#define OP_INT_NEQ 11
#define OP_INT_LT 12
#define OP_INT_LE 13
#define OP_INT_GT 14
#define OP_INT_GE 15
#define OP_FILE_EXISTS 16
const struct {
int arg;
const char *str;
int op;
int adv;
} op_adv[] = {
{1, "=", OP_STR_EQ, 3},
{1, "!=", OP_STR_NEQ, 3},
{1, "<", OP_STR_LT, 3},
{1, ">", OP_STR_GT, 3},
{1, "-eq", OP_INT_EQ, 3},
{1, "-ne", OP_INT_NEQ, 3},
{1, "-lt", OP_INT_LT, 3},
{1, "-le", OP_INT_LE, 3},
{1, "-gt", OP_INT_GT, 3},
{1, "-ge", OP_INT_GE, 3},
{0, "!", OP_NOT, 1},
{0, "-o", OP_OR, 1},
{0, "-a", OP_AND, 1},
{0, "-z", OP_STR_EMPTY, 2},
{0, "-n", OP_STR_NEMPTY, 2},
{0, "-e", OP_FILE_EXISTS, 4},
};
static int do_test(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char * const *ap;
int i, op, left, adv, expr, last_expr, last_unop, last_binop;
/* args? */
if (argc < 3)
return 1;
#ifdef DEBUG
{
debug("test(%d):", argc);
left = 1;
while (argv[left])
debug(" '%s'", argv[left++]);
}
#endif
left = argc - 1;
ap = argv + 1;
expr = 0;
last_unop = OP_INVALID;
last_binop = OP_INVALID;
last_expr = -1;
while (left > 0) {
for (i = 0; i < ARRAY_SIZE(op_adv); i++) {
if (left <= op_adv[i].arg)
continue;
if (!strcmp(ap[op_adv[i].arg], op_adv[i].str)) {
op = op_adv[i].op;
adv = op_adv[i].adv;
break;
}
}
if (i == ARRAY_SIZE(op_adv)) {
expr = 1;
break;
}
if (left < adv) {
expr = 1;
break;
}
switch (op) {
case OP_STR_EMPTY:
expr = strlen(ap[1]) == 0 ? 1 : 0;
break;
case OP_STR_NEMPTY:
expr = strlen(ap[1]) == 0 ? 0 : 1;
break;
case OP_STR_EQ:
expr = strcmp(ap[0], ap[2]) == 0;
break;
case OP_STR_NEQ:
expr = strcmp(ap[0], ap[2]) != 0;
break;
case OP_STR_LT:
expr = strcmp(ap[0], ap[2]) < 0;
break;
case OP_STR_GT:
expr = strcmp(ap[0], ap[2]) > 0;
break;
case OP_INT_EQ:
expr = simple_strtol(ap[0], NULL, 10) ==
simple_strtol(ap[2], NULL, 10);
break;
case OP_INT_NEQ:
expr = simple_strtol(ap[0], NULL, 10) !=
simple_strtol(ap[2], NULL, 10);
break;
case OP_INT_LT:
expr = simple_strtol(ap[0], NULL, 10) <
simple_strtol(ap[2], NULL, 10);
break;
case OP_INT_LE:
expr = simple_strtol(ap[0], NULL, 10) <=
simple_strtol(ap[2], NULL, 10);
break;
case OP_INT_GT:
expr = simple_strtol(ap[0], NULL, 10) >
simple_strtol(ap[2], NULL, 10);
break;
case OP_INT_GE:
expr = simple_strtol(ap[0], NULL, 10) >=
simple_strtol(ap[2], NULL, 10);
break;
case OP_FILE_EXISTS:
expr = file_exists(ap[1], ap[2], ap[3], FS_TYPE_ANY);
break;
}
switch (op) {
case OP_OR:
last_expr = expr;
last_binop = OP_OR;
break;
case OP_AND:
last_expr = expr;
last_binop = OP_AND;
break;
case OP_NOT:
if (last_unop == OP_NOT)
last_unop = OP_INVALID;
else
last_unop = OP_NOT;
break;
default:
if (last_unop == OP_NOT) {
expr = !expr;
last_unop = OP_INVALID;
}
if (last_binop == OP_OR)
expr = last_expr || expr;
else if (last_binop == OP_AND)
expr = last_expr && expr;
last_binop = OP_INVALID;
break;
}
ap += adv; left -= adv;
}
expr = !expr;
debug (": returns %d\n", expr);
return expr;
}
#undef true
#undef false
U_BOOT_CMD(
test, CONFIG_SYS_MAXARGS, 1, do_test,
"minimal test like /bin/sh",
"[args..]"
);
static int do_false(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
return 1;
}
U_BOOT_CMD(
false, CONFIG_SYS_MAXARGS, 1, do_false,
"do nothing, unsuccessfully",
NULL
);
static int do_true(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
return 0;
}
U_BOOT_CMD(
true, CONFIG_SYS_MAXARGS, 1, do_true,
"do nothing, successfully",
NULL
);