1 /* 2 * (C) Copyright 2000-2003 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 /* 25 * Command Processor Table 26 */ 27 28 #include <common.h> 29 #include <command.h> 30 31 int 32 do_version (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) 33 { 34 extern char version_string[]; 35 printf ("\n%s\n", version_string); 36 return 0; 37 } 38 39 U_BOOT_CMD( 40 version, 1, 1, do_version, 41 "version - print monitor version\n", 42 NULL 43 ); 44 45 #if defined(CONFIG_CMD_ECHO) 46 47 int 48 do_echo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) 49 { 50 int i, putnl = 1; 51 52 for (i = 1; i < argc; i++) { 53 char *p = argv[i], c; 54 55 if (i > 1) 56 putc(' '); 57 while ((c = *p++) != '\0') { 58 if (c == '\\' && *p == 'c') { 59 putnl = 0; 60 p++; 61 } else { 62 putc(c); 63 } 64 } 65 } 66 67 if (putnl) 68 putc('\n'); 69 return 0; 70 } 71 72 U_BOOT_CMD( 73 echo, CONFIG_SYS_MAXARGS, 1, do_echo, 74 "echo - echo args to console\n", 75 "[args..]\n" 76 " - echo args to console; \\c suppresses newline\n" 77 ); 78 79 #endif 80 81 #ifdef CONFIG_SYS_HUSH_PARSER 82 83 int 84 do_test (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) 85 { 86 char **ap; 87 int left, adv, expr, last_expr, neg, last_cmp; 88 89 /* args? */ 90 if (argc < 3) 91 return 1; 92 93 #if 0 94 { 95 printf("test:"); 96 left = 1; 97 while (argv[left]) 98 printf(" %s", argv[left++]); 99 } 100 #endif 101 102 last_expr = 0; 103 left = argc - 1; ap = argv + 1; 104 if (left > 0 && strcmp(ap[0], "!") == 0) { 105 neg = 1; 106 ap++; 107 left--; 108 } else 109 neg = 0; 110 111 expr = -1; 112 last_cmp = -1; 113 last_expr = -1; 114 while (left > 0) { 115 116 if (strcmp(ap[0], "-o") == 0 || strcmp(ap[0], "-a") == 0) 117 adv = 1; 118 else if (strcmp(ap[0], "-z") == 0 || strcmp(ap[0], "-n") == 0) 119 adv = 2; 120 else 121 adv = 3; 122 123 if (left < adv) { 124 expr = 1; 125 break; 126 } 127 128 if (adv == 1) { 129 if (strcmp(ap[0], "-o") == 0) { 130 last_expr = expr; 131 last_cmp = 0; 132 } else if (strcmp(ap[0], "-a") == 0) { 133 last_expr = expr; 134 last_cmp = 1; 135 } else { 136 expr = 1; 137 break; 138 } 139 } 140 141 if (adv == 2) { 142 if (strcmp(ap[0], "-z") == 0) 143 expr = strlen(ap[1]) == 0 ? 1 : 0; 144 else if (strcmp(ap[0], "-n") == 0) 145 expr = strlen(ap[1]) == 0 ? 0 : 1; 146 else { 147 expr = 1; 148 break; 149 } 150 151 if (last_cmp == 0) 152 expr = last_expr || expr; 153 else if (last_cmp == 1) 154 expr = last_expr && expr; 155 last_cmp = -1; 156 } 157 158 if (adv == 3) { 159 if (strcmp(ap[1], "=") == 0) 160 expr = strcmp(ap[0], ap[2]) == 0; 161 else if (strcmp(ap[1], "!=") == 0) 162 expr = strcmp(ap[0], ap[2]) != 0; 163 else if (strcmp(ap[1], ">") == 0) 164 expr = strcmp(ap[0], ap[2]) > 0; 165 else if (strcmp(ap[1], "<") == 0) 166 expr = strcmp(ap[0], ap[2]) < 0; 167 else if (strcmp(ap[1], "-eq") == 0) 168 expr = simple_strtol(ap[0], NULL, 10) == simple_strtol(ap[2], NULL, 10); 169 else if (strcmp(ap[1], "-ne") == 0) 170 expr = simple_strtol(ap[0], NULL, 10) != simple_strtol(ap[2], NULL, 10); 171 else if (strcmp(ap[1], "-lt") == 0) 172 expr = simple_strtol(ap[0], NULL, 10) < simple_strtol(ap[2], NULL, 10); 173 else if (strcmp(ap[1], "-le") == 0) 174 expr = simple_strtol(ap[0], NULL, 10) <= simple_strtol(ap[2], NULL, 10); 175 else if (strcmp(ap[1], "-gt") == 0) 176 expr = simple_strtol(ap[0], NULL, 10) > simple_strtol(ap[2], NULL, 10); 177 else if (strcmp(ap[1], "-ge") == 0) 178 expr = simple_strtol(ap[0], NULL, 10) >= simple_strtol(ap[2], NULL, 10); 179 else { 180 expr = 1; 181 break; 182 } 183 184 if (last_cmp == 0) 185 expr = last_expr || expr; 186 else if (last_cmp == 1) 187 expr = last_expr && expr; 188 last_cmp = -1; 189 } 190 191 ap += adv; left -= adv; 192 } 193 194 if (neg) 195 expr = !expr; 196 197 expr = !expr; 198 199 debug (": returns %d\n", expr); 200 201 return expr; 202 } 203 204 U_BOOT_CMD( 205 test, CONFIG_SYS_MAXARGS, 1, do_test, 206 "test - minimal test like /bin/sh\n", 207 "[args..]\n" 208 " - test functionality\n" 209 ); 210 211 int 212 do_exit (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) 213 { 214 int r; 215 216 r = 0; 217 if (argc > 1) 218 r = simple_strtoul(argv[1], NULL, 10); 219 220 return -r - 2; 221 } 222 223 U_BOOT_CMD( 224 exit, 2, 1, do_exit, 225 "exit - exit script\n", 226 " - exit functionality\n" 227 ); 228 229 230 #endif 231 232 /* 233 * Use puts() instead of printf() to avoid printf buffer overflow 234 * for long help messages 235 */ 236 int do_help (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) 237 { 238 int i; 239 int rcode = 0; 240 241 if (argc == 1) { /*show list of commands */ 242 243 int cmd_items = &__u_boot_cmd_end - 244 &__u_boot_cmd_start; /* pointer arith! */ 245 cmd_tbl_t *cmd_array[cmd_items]; 246 int i, j, swaps; 247 248 /* Make array of commands from .uboot_cmd section */ 249 cmdtp = &__u_boot_cmd_start; 250 for (i = 0; i < cmd_items; i++) { 251 cmd_array[i] = cmdtp++; 252 } 253 254 /* Sort command list (trivial bubble sort) */ 255 for (i = cmd_items - 1; i > 0; --i) { 256 swaps = 0; 257 for (j = 0; j < i; ++j) { 258 if (strcmp (cmd_array[j]->name, 259 cmd_array[j + 1]->name) > 0) { 260 cmd_tbl_t *tmp; 261 tmp = cmd_array[j]; 262 cmd_array[j] = cmd_array[j + 1]; 263 cmd_array[j + 1] = tmp; 264 ++swaps; 265 } 266 } 267 if (!swaps) 268 break; 269 } 270 271 /* print short help (usage) */ 272 for (i = 0; i < cmd_items; i++) { 273 const char *usage = cmd_array[i]->usage; 274 275 /* allow user abort */ 276 if (ctrlc ()) 277 return 1; 278 if (usage == NULL) 279 continue; 280 puts (usage); 281 } 282 return 0; 283 } 284 /* 285 * command help (long version) 286 */ 287 for (i = 1; i < argc; ++i) { 288 if ((cmdtp = find_cmd (argv[i])) != NULL) { 289 #ifdef CONFIG_SYS_LONGHELP 290 /* found - print (long) help info */ 291 puts (cmdtp->name); 292 putc (' '); 293 if (cmdtp->help) { 294 puts (cmdtp->help); 295 } else { 296 puts ("- No help available.\n"); 297 rcode = 1; 298 } 299 putc ('\n'); 300 #else /* no long help available */ 301 if (cmdtp->usage) 302 puts (cmdtp->usage); 303 #endif /* CONFIG_SYS_LONGHELP */ 304 } else { 305 printf ("Unknown command '%s' - try 'help'" 306 " without arguments for list of all" 307 " known commands\n\n", argv[i] 308 ); 309 rcode = 1; 310 } 311 } 312 return rcode; 313 } 314 315 316 U_BOOT_CMD( 317 help, CONFIG_SYS_MAXARGS, 1, do_help, 318 "help - print online help\n", 319 "[command ...]\n" 320 " - show help information (for 'command')\n" 321 "'help' prints online help for the monitor commands.\n\n" 322 "Without arguments, it prints a short usage message for all commands.\n\n" 323 "To get detailed help information for specific commands you can type\n" 324 "'help' with one or more command names as arguments.\n" 325 ); 326 327 /* This do not ust the U_BOOT_CMD macro as ? can't be used in symbol names */ 328 #ifdef CONFIG_SYS_LONGHELP 329 cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = { 330 "?", CONFIG_SYS_MAXARGS, 1, do_help, 331 "? - alias for 'help'\n", 332 NULL 333 }; 334 #else 335 cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = { 336 "?", CONFIG_SYS_MAXARGS, 1, do_help, 337 "? - alias for 'help'\n" 338 }; 339 #endif /* CONFIG_SYS_LONGHELP */ 340 341 /*************************************************************************** 342 * find command table entry for a command 343 */ 344 cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len) 345 { 346 cmd_tbl_t *cmdtp; 347 cmd_tbl_t *cmdtp_temp = table; /*Init value */ 348 const char *p; 349 int len; 350 int n_found = 0; 351 352 /* 353 * Some commands allow length modifiers (like "cp.b"); 354 * compare command name only until first dot. 355 */ 356 len = ((p = strchr(cmd, '.')) == NULL) ? strlen (cmd) : (p - cmd); 357 358 for (cmdtp = table; 359 cmdtp != table + table_len; 360 cmdtp++) { 361 if (strncmp (cmd, cmdtp->name, len) == 0) { 362 if (len == strlen (cmdtp->name)) 363 return cmdtp; /* full match */ 364 365 cmdtp_temp = cmdtp; /* abbreviated command ? */ 366 n_found++; 367 } 368 } 369 if (n_found == 1) { /* exactly one match */ 370 return cmdtp_temp; 371 } 372 373 return NULL; /* not found or ambiguous command */ 374 } 375 376 cmd_tbl_t *find_cmd (const char *cmd) 377 { 378 int len = &__u_boot_cmd_end - &__u_boot_cmd_start; 379 return find_cmd_tbl(cmd, &__u_boot_cmd_start, len); 380 } 381 382 void cmd_usage(cmd_tbl_t *cmdtp) 383 { 384 printf("Usage:\n%s\n", cmdtp->usage); 385 } 386 387 #ifdef CONFIG_AUTO_COMPLETE 388 389 int var_complete(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) 390 { 391 static char tmp_buf[512]; 392 int space; 393 394 space = last_char == '\0' || last_char == ' ' || last_char == '\t'; 395 396 if (space && argc == 1) 397 return env_complete("", maxv, cmdv, sizeof(tmp_buf), tmp_buf); 398 399 if (!space && argc == 2) 400 return env_complete(argv[1], maxv, cmdv, sizeof(tmp_buf), tmp_buf); 401 402 return 0; 403 } 404 405 static void install_auto_complete_handler(const char *cmd, 406 int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[])) 407 { 408 cmd_tbl_t *cmdtp; 409 410 cmdtp = find_cmd(cmd); 411 if (cmdtp == NULL) 412 return; 413 414 cmdtp->complete = complete; 415 } 416 417 void install_auto_complete(void) 418 { 419 install_auto_complete_handler("printenv", var_complete); 420 install_auto_complete_handler("setenv", var_complete); 421 #if defined(CONFIG_CMD_RUN) 422 install_auto_complete_handler("run", var_complete); 423 #endif 424 } 425 426 /*************************************************************************************/ 427 428 static int complete_cmdv(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) 429 { 430 cmd_tbl_t *cmdtp; 431 const char *p; 432 int len, clen; 433 int n_found = 0; 434 const char *cmd; 435 436 /* sanity? */ 437 if (maxv < 2) 438 return -2; 439 440 cmdv[0] = NULL; 441 442 if (argc == 0) { 443 /* output full list of commands */ 444 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { 445 if (n_found >= maxv - 2) { 446 cmdv[n_found++] = "..."; 447 break; 448 } 449 cmdv[n_found++] = cmdtp->name; 450 } 451 cmdv[n_found] = NULL; 452 return n_found; 453 } 454 455 /* more than one arg or one but the start of the next */ 456 if (argc > 1 || (last_char == '\0' || last_char == ' ' || last_char == '\t')) { 457 cmdtp = find_cmd(argv[0]); 458 if (cmdtp == NULL || cmdtp->complete == NULL) { 459 cmdv[0] = NULL; 460 return 0; 461 } 462 return (*cmdtp->complete)(argc, argv, last_char, maxv, cmdv); 463 } 464 465 cmd = argv[0]; 466 /* 467 * Some commands allow length modifiers (like "cp.b"); 468 * compare command name only until first dot. 469 */ 470 p = strchr(cmd, '.'); 471 if (p == NULL) 472 len = strlen(cmd); 473 else 474 len = p - cmd; 475 476 /* return the partial matches */ 477 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { 478 479 clen = strlen(cmdtp->name); 480 if (clen < len) 481 continue; 482 483 if (memcmp(cmd, cmdtp->name, len) != 0) 484 continue; 485 486 /* too many! */ 487 if (n_found >= maxv - 2) { 488 cmdv[n_found++] = "..."; 489 break; 490 } 491 492 cmdv[n_found++] = cmdtp->name; 493 } 494 495 cmdv[n_found] = NULL; 496 return n_found; 497 } 498 499 static int make_argv(char *s, int argvsz, char *argv[]) 500 { 501 int argc = 0; 502 503 /* split into argv */ 504 while (argc < argvsz - 1) { 505 506 /* skip any white space */ 507 while ((*s == ' ') || (*s == '\t')) 508 ++s; 509 510 if (*s == '\0') /* end of s, no more args */ 511 break; 512 513 argv[argc++] = s; /* begin of argument string */ 514 515 /* find end of string */ 516 while (*s && (*s != ' ') && (*s != '\t')) 517 ++s; 518 519 if (*s == '\0') /* end of s, no more args */ 520 break; 521 522 *s++ = '\0'; /* terminate current arg */ 523 } 524 argv[argc] = NULL; 525 526 return argc; 527 } 528 529 static void print_argv(const char *banner, const char *leader, const char *sep, int linemax, char *argv[]) 530 { 531 int ll = leader != NULL ? strlen(leader) : 0; 532 int sl = sep != NULL ? strlen(sep) : 0; 533 int len, i; 534 535 if (banner) { 536 puts("\n"); 537 puts(banner); 538 } 539 540 i = linemax; /* force leader and newline */ 541 while (*argv != NULL) { 542 len = strlen(*argv) + sl; 543 if (i + len >= linemax) { 544 puts("\n"); 545 if (leader) 546 puts(leader); 547 i = ll - sl; 548 } else if (sep) 549 puts(sep); 550 puts(*argv++); 551 i += len; 552 } 553 printf("\n"); 554 } 555 556 static int find_common_prefix(char *argv[]) 557 { 558 int i, len; 559 char *anchor, *s, *t; 560 561 if (*argv == NULL) 562 return 0; 563 564 /* begin with max */ 565 anchor = *argv++; 566 len = strlen(anchor); 567 while ((t = *argv++) != NULL) { 568 s = anchor; 569 for (i = 0; i < len; i++, t++, s++) { 570 if (*t != *s) 571 break; 572 } 573 len = s - anchor; 574 } 575 return len; 576 } 577 578 static char tmp_buf[CONFIG_SYS_CBSIZE]; /* copy of console I/O buffer */ 579 580 int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp) 581 { 582 int n = *np, col = *colp; 583 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */ 584 char *cmdv[20]; 585 char *s, *t; 586 const char *sep; 587 int i, j, k, len, seplen, argc; 588 int cnt; 589 char last_char; 590 591 if (strcmp(prompt, CONFIG_SYS_PROMPT) != 0) 592 return 0; /* not in normal console */ 593 594 cnt = strlen(buf); 595 if (cnt >= 1) 596 last_char = buf[cnt - 1]; 597 else 598 last_char = '\0'; 599 600 /* copy to secondary buffer which will be affected */ 601 strcpy(tmp_buf, buf); 602 603 /* separate into argv */ 604 argc = make_argv(tmp_buf, sizeof(argv)/sizeof(argv[0]), argv); 605 606 /* do the completion and return the possible completions */ 607 i = complete_cmdv(argc, argv, last_char, sizeof(cmdv)/sizeof(cmdv[0]), cmdv); 608 609 /* no match; bell and out */ 610 if (i == 0) { 611 if (argc > 1) /* allow tab for non command */ 612 return 0; 613 putc('\a'); 614 return 1; 615 } 616 617 s = NULL; 618 len = 0; 619 sep = NULL; 620 seplen = 0; 621 if (i == 1) { /* one match; perfect */ 622 k = strlen(argv[argc - 1]); 623 s = cmdv[0] + k; 624 len = strlen(s); 625 sep = " "; 626 seplen = 1; 627 } else if (i > 1 && (j = find_common_prefix(cmdv)) != 0) { /* more */ 628 k = strlen(argv[argc - 1]); 629 j -= k; 630 if (j > 0) { 631 s = cmdv[0] + k; 632 len = j; 633 } 634 } 635 636 if (s != NULL) { 637 k = len + seplen; 638 /* make sure it fits */ 639 if (n + k >= CONFIG_SYS_CBSIZE - 2) { 640 putc('\a'); 641 return 1; 642 } 643 644 t = buf + cnt; 645 for (i = 0; i < len; i++) 646 *t++ = *s++; 647 if (sep != NULL) 648 for (i = 0; i < seplen; i++) 649 *t++ = sep[i]; 650 *t = '\0'; 651 n += k; 652 col += k; 653 puts(t - k); 654 if (sep == NULL) 655 putc('\a'); 656 *np = n; 657 *colp = col; 658 } else { 659 print_argv(NULL, " ", " ", 78, cmdv); 660 661 puts(prompt); 662 puts(buf); 663 } 664 return 1; 665 } 666 667 #endif 668 669 #ifdef CMD_DATA_SIZE 670 int cmd_get_data_size(char* arg, int default_size) 671 { 672 /* Check for a size specification .b, .w or .l. 673 */ 674 int len = strlen(arg); 675 if (len > 2 && arg[len-2] == '.') { 676 switch(arg[len-1]) { 677 case 'b': 678 return 1; 679 case 'w': 680 return 2; 681 case 'l': 682 return 4; 683 case 's': 684 return -2; 685 default: 686 return -1; 687 } 688 } 689 return default_size; 690 } 691 #endif 692