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cmd/test.c
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/* * Copyright 2000-2009 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * SPDX-License-Identifier: GPL-2.0+ */ #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 ", 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 ); |