diff options
Diffstat (limited to 'common/command.c')
| -rw-r--r-- | common/command.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/common/command.c b/common/command.c index df5d3e9..2b48a1c 100644 --- a/common/command.c +++ b/common/command.c @@ -74,6 +74,159 @@ U_BOOT_CMD( " - echo args to console; \\c suppresses newline\n" ); +#ifdef CFG_HUSH_PARSER + +int +do_test (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + char **ap; + int left, adv, expr, last_expr, neg, last_cmp; + + /* args? */ + if (argc < 3) + return 1; + +#if 0 + { + printf("test:"); + left = 1; + while (argv[left]) + printf(" %s", argv[left++]); + } +#endif + + last_expr = 0; + left = argc - 1; ap = argv + 1; + if (left > 0 && strcmp(ap[0], "!") == 0) { + neg = 1; + ap++; + left--; + } else + neg = 0; + + expr = -1; + last_cmp = -1; + last_expr = -1; + while (left > 0) { + + if (strcmp(ap[0], "-o") == 0 || strcmp(ap[0], "-a") == 0) + adv = 1; + else if (strcmp(ap[0], "-z") == 0 || strcmp(ap[0], "-n") == 0) + adv = 2; + else + adv = 3; + + if (left < adv) { + expr = 1; + break; + } + + if (adv == 1) { + if (strcmp(ap[0], "-o") == 0) { + last_expr = expr; + last_cmp = 0; + } else if (strcmp(ap[0], "-a") == 0) { + last_expr = expr; + last_cmp = 1; + } else { + expr = 1; + break; + } + } + + if (adv == 2) { + if (strcmp(ap[0], "-z") == 0) + expr = strlen(ap[1]) == 0 ? 0 : 1; + else if (strcmp(ap[0], "-n") == 0) + expr = strlen(ap[1]) == 0 ? 1 : 0; + else { + expr = 1; + break; + } + + if (last_cmp == 0) + expr = last_expr || expr; + else if (last_cmp == 1) + expr = last_expr && expr; + last_cmp = -1; + } + + if (adv == 3) { + if (strcmp(ap[1], "=") == 0) + expr = strcmp(ap[0], ap[2]) == 0; + else if (strcmp(ap[1], "!=") == 0) + expr = strcmp(ap[0], ap[2]) != 0; + else if (strcmp(ap[1], ">") == 0) + expr = strcmp(ap[0], ap[2]) > 0; + else if (strcmp(ap[1], "<") == 0) + expr = strcmp(ap[0], ap[2]) < 0; + else if (strcmp(ap[1], "-eq") == 0) + expr = simple_strtol(ap[0], NULL, 10) == simple_strtol(ap[2], NULL, 10); + else if (strcmp(ap[1], "-ne") == 0) + expr = simple_strtol(ap[0], NULL, 10) != simple_strtol(ap[2], NULL, 10); + else if (strcmp(ap[1], "-lt") == 0) + expr = simple_strtol(ap[0], NULL, 10) < simple_strtol(ap[2], NULL, 10); + else if (strcmp(ap[1], "-le") == 0) + expr = simple_strtol(ap[0], NULL, 10) <= simple_strtol(ap[2], NULL, 10); + else if (strcmp(ap[1], "-gt") == 0) + expr = simple_strtol(ap[0], NULL, 10) > simple_strtol(ap[2], NULL, 10); + else if (strcmp(ap[1], "-ge") == 0) + expr = simple_strtol(ap[0], NULL, 10) >= simple_strtol(ap[2], NULL, 10); + else { + expr = 1; + break; + } + + if (last_cmp == 0) + expr = last_expr || expr; + else if (last_cmp == 1) + expr = last_expr && expr; + last_cmp = -1; + } + + ap += adv; left -= adv; + } + + if (neg) + expr = !expr; + + expr = !expr; + +#if 0 + printf(": returns %d\n", expr); +#endif + + return expr; +} + +U_BOOT_CMD( + test, CFG_MAXARGS, 1, do_test, + "test - minimal test like /bin/sh\n", + "[args..]\n" + " - test functionality\n" +); + +int +do_exit (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + int r; + + r = 0; + if (argc > 1) + r = simple_strtoul(argv[1], NULL, 10); + + return -r - 2; +} + +U_BOOT_CMD( + exit, 2, 1, do_exit, + "exit - exit script\n", + " - exit functionality\n" +); + + +#endif + /* * Use puts() instead of printf() to avoid printf buffer overflow * for long help messages |