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, CFG_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 CFG_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, CFG_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 CFG_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 /* CFG_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, CFG_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 CFG_LONGHELP 329 cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = { 330 "?", CFG_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 "?", CFG_MAXARGS, 1, do_help, 337 "? - alias for 'help'\n" 338 }; 339 #endif /* CFG_LONGHELP */ 340 341 /*************************************************************************** 342 * find command table entry for a command 343 */ 344 cmd_tbl_t *find_cmd (const char *cmd) 345 { 346 cmd_tbl_t *cmdtp; 347 cmd_tbl_t *cmdtp_temp = &__u_boot_cmd_start; /*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 = &__u_boot_cmd_start; 359 cmdtp != &__u_boot_cmd_end; 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 #ifdef CONFIG_AUTO_COMPLETE 377 378 int var_complete(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) 379 { 380 static char tmp_buf[512]; 381 int space; 382 383 space = last_char == '\0' || last_char == ' ' || last_char == '\t'; 384 385 if (space && argc == 1) 386 return env_complete("", maxv, cmdv, sizeof(tmp_buf), tmp_buf); 387 388 if (!space && argc == 2) 389 return env_complete(argv[1], maxv, cmdv, sizeof(tmp_buf), tmp_buf); 390 391 return 0; 392 } 393 394 static void install_auto_complete_handler(const char *cmd, 395 int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[])) 396 { 397 cmd_tbl_t *cmdtp; 398 399 cmdtp = find_cmd(cmd); 400 if (cmdtp == NULL) 401 return; 402 403 cmdtp->complete = complete; 404 } 405 406 void install_auto_complete(void) 407 { 408 install_auto_complete_handler("printenv", var_complete); 409 install_auto_complete_handler("setenv", var_complete); 410 #if defined(CONFIG_CMD_RUN) 411 install_auto_complete_handler("run", var_complete); 412 #endif 413 } 414 415 /*************************************************************************************/ 416 417 static int complete_cmdv(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) 418 { 419 cmd_tbl_t *cmdtp; 420 const char *p; 421 int len, clen; 422 int n_found = 0; 423 const char *cmd; 424 425 /* sanity? */ 426 if (maxv < 2) 427 return -2; 428 429 cmdv[0] = NULL; 430 431 if (argc == 0) { 432 /* output full list of commands */ 433 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { 434 if (n_found >= maxv - 2) { 435 cmdv[n_found++] = "..."; 436 break; 437 } 438 cmdv[n_found++] = cmdtp->name; 439 } 440 cmdv[n_found] = NULL; 441 return n_found; 442 } 443 444 /* more than one arg or one but the start of the next */ 445 if (argc > 1 || (last_char == '\0' || last_char == ' ' || last_char == '\t')) { 446 cmdtp = find_cmd(argv[0]); 447 if (cmdtp == NULL || cmdtp->complete == NULL) { 448 cmdv[0] = NULL; 449 return 0; 450 } 451 return (*cmdtp->complete)(argc, argv, last_char, maxv, cmdv); 452 } 453 454 cmd = argv[0]; 455 /* 456 * Some commands allow length modifiers (like "cp.b"); 457 * compare command name only until first dot. 458 */ 459 p = strchr(cmd, '.'); 460 if (p == NULL) 461 len = strlen(cmd); 462 else 463 len = p - cmd; 464 465 /* return the partial matches */ 466 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { 467 468 clen = strlen(cmdtp->name); 469 if (clen < len) 470 continue; 471 472 if (memcmp(cmd, cmdtp->name, len) != 0) 473 continue; 474 475 /* too many! */ 476 if (n_found >= maxv - 2) { 477 cmdv[n_found++] = "..."; 478 break; 479 } 480 481 cmdv[n_found++] = cmdtp->name; 482 } 483 484 cmdv[n_found] = NULL; 485 return n_found; 486 } 487 488 static int make_argv(char *s, int argvsz, char *argv[]) 489 { 490 int argc = 0; 491 492 /* split into argv */ 493 while (argc < argvsz - 1) { 494 495 /* skip any white space */ 496 while ((*s == ' ') || (*s == '\t')) 497 ++s; 498 499 if (*s == '\0') /* end of s, no more args */ 500 break; 501 502 argv[argc++] = s; /* begin of argument string */ 503 504 /* find end of string */ 505 while (*s && (*s != ' ') && (*s != '\t')) 506 ++s; 507 508 if (*s == '\0') /* end of s, no more args */ 509 break; 510 511 *s++ = '\0'; /* terminate current arg */ 512 } 513 argv[argc] = NULL; 514 515 return argc; 516 } 517 518 static void print_argv(const char *banner, const char *leader, const char *sep, int linemax, char *argv[]) 519 { 520 int ll = leader != NULL ? strlen(leader) : 0; 521 int sl = sep != NULL ? strlen(sep) : 0; 522 int len, i; 523 524 if (banner) { 525 puts("\n"); 526 puts(banner); 527 } 528 529 i = linemax; /* force leader and newline */ 530 while (*argv != NULL) { 531 len = strlen(*argv) + sl; 532 if (i + len >= linemax) { 533 puts("\n"); 534 if (leader) 535 puts(leader); 536 i = ll - sl; 537 } else if (sep) 538 puts(sep); 539 puts(*argv++); 540 i += len; 541 } 542 printf("\n"); 543 } 544 545 static int find_common_prefix(char *argv[]) 546 { 547 int i, len; 548 char *anchor, *s, *t; 549 550 if (*argv == NULL) 551 return 0; 552 553 /* begin with max */ 554 anchor = *argv++; 555 len = strlen(anchor); 556 while ((t = *argv++) != NULL) { 557 s = anchor; 558 for (i = 0; i < len; i++, t++, s++) { 559 if (*t != *s) 560 break; 561 } 562 len = s - anchor; 563 } 564 return len; 565 } 566 567 static char tmp_buf[CFG_CBSIZE]; /* copy of console I/O buffer */ 568 569 int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp) 570 { 571 int n = *np, col = *colp; 572 char *argv[CFG_MAXARGS + 1]; /* NULL terminated */ 573 char *cmdv[20]; 574 char *s, *t; 575 const char *sep; 576 int i, j, k, len, seplen, argc; 577 int cnt; 578 char last_char; 579 580 if (strcmp(prompt, CFG_PROMPT) != 0) 581 return 0; /* not in normal console */ 582 583 cnt = strlen(buf); 584 if (cnt >= 1) 585 last_char = buf[cnt - 1]; 586 else 587 last_char = '\0'; 588 589 /* copy to secondary buffer which will be affected */ 590 strcpy(tmp_buf, buf); 591 592 /* separate into argv */ 593 argc = make_argv(tmp_buf, sizeof(argv)/sizeof(argv[0]), argv); 594 595 /* do the completion and return the possible completions */ 596 i = complete_cmdv(argc, argv, last_char, sizeof(cmdv)/sizeof(cmdv[0]), cmdv); 597 598 /* no match; bell and out */ 599 if (i == 0) { 600 if (argc > 1) /* allow tab for non command */ 601 return 0; 602 putc('\a'); 603 return 1; 604 } 605 606 s = NULL; 607 len = 0; 608 sep = NULL; 609 seplen = 0; 610 if (i == 1) { /* one match; perfect */ 611 k = strlen(argv[argc - 1]); 612 s = cmdv[0] + k; 613 len = strlen(s); 614 sep = " "; 615 seplen = 1; 616 } else if (i > 1 && (j = find_common_prefix(cmdv)) != 0) { /* more */ 617 k = strlen(argv[argc - 1]); 618 j -= k; 619 if (j > 0) { 620 s = cmdv[0] + k; 621 len = j; 622 } 623 } 624 625 if (s != NULL) { 626 k = len + seplen; 627 /* make sure it fits */ 628 if (n + k >= CFG_CBSIZE - 2) { 629 putc('\a'); 630 return 1; 631 } 632 633 t = buf + cnt; 634 for (i = 0; i < len; i++) 635 *t++ = *s++; 636 if (sep != NULL) 637 for (i = 0; i < seplen; i++) 638 *t++ = sep[i]; 639 *t = '\0'; 640 n += k; 641 col += k; 642 puts(t - k); 643 if (sep == NULL) 644 putc('\a'); 645 *np = n; 646 *colp = col; 647 } else { 648 print_argv(NULL, " ", " ", 78, cmdv); 649 650 puts(prompt); 651 puts(buf); 652 } 653 return 1; 654 } 655 656 #endif 657 658 #ifdef CMD_DATA_SIZE 659 int cmd_get_data_size(char* arg, int default_size) 660 { 661 /* Check for a size specification .b, .w or .l. 662 */ 663 int len = strlen(arg); 664 if (len > 2 && arg[len-2] == '.') { 665 switch(arg[len-1]) { 666 case 'b': 667 return 1; 668 case 'w': 669 return 2; 670 case 'l': 671 return 4; 672 case 's': 673 return -2; 674 default: 675 return -1; 676 } 677 } 678 return default_size; 679 } 680 #endif 681