cmd/test.c

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