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Commit | Line | Data |
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5dfa25f2 | 1 | /* |
2dce551e | 2 | * (C) Copyright 2000-2009 |
5dfa25f2 WD |
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> | |
5dfa25f2 | 30 | |
5dfa25f2 WD |
31 | /* |
32 | * Use puts() instead of printf() to avoid printf buffer overflow | |
33 | * for long help messages | |
34 | */ | |
2dce551e DZ |
35 | |
36 | int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int | |
37 | flag, int argc, char *argv[]) | |
5dfa25f2 WD |
38 | { |
39 | int i; | |
40 | int rcode = 0; | |
41 | ||
8bde7f77 | 42 | if (argc == 1) { /*show list of commands */ |
9d2b18a0 WD |
43 | cmd_tbl_t *cmd_array[cmd_items]; |
44 | int i, j, swaps; | |
45 | ||
46 | /* Make array of commands from .uboot_cmd section */ | |
2dce551e | 47 | cmdtp = cmd_start; |
9d2b18a0 WD |
48 | for (i = 0; i < cmd_items; i++) { |
49 | cmd_array[i] = cmdtp++; | |
8bde7f77 | 50 | } |
8bde7f77 | 51 | |
9d2b18a0 WD |
52 | /* Sort command list (trivial bubble sort) */ |
53 | for (i = cmd_items - 1; i > 0; --i) { | |
54 | swaps = 0; | |
55 | for (j = 0; j < i; ++j) { | |
56 | if (strcmp (cmd_array[j]->name, | |
57 | cmd_array[j + 1]->name) > 0) { | |
58 | cmd_tbl_t *tmp; | |
59 | tmp = cmd_array[j]; | |
60 | cmd_array[j] = cmd_array[j + 1]; | |
61 | cmd_array[j + 1] = tmp; | |
62 | ++swaps; | |
63 | } | |
8bde7f77 | 64 | } |
9d2b18a0 WD |
65 | if (!swaps) |
66 | break; | |
8bde7f77 | 67 | } |
5dfa25f2 | 68 | |
8bde7f77 | 69 | /* print short help (usage) */ |
9d2b18a0 WD |
70 | for (i = 0; i < cmd_items; i++) { |
71 | const char *usage = cmd_array[i]->usage; | |
72 | ||
5dfa25f2 | 73 | /* allow user abort */ |
8bde7f77 | 74 | if (ctrlc ()) |
5dfa25f2 | 75 | return 1; |
9d2b18a0 | 76 | if (usage == NULL) |
5dfa25f2 | 77 | continue; |
2fb2604d PT |
78 | printf("%-*s- %s\n", CONFIG_SYS_HELP_CMD_WIDTH, |
79 | cmd_array[i]->name, usage); | |
5dfa25f2 | 80 | } |
5dfa25f2 WD |
81 | return 0; |
82 | } | |
5dfa25f2 WD |
83 | /* |
84 | * command help (long version) | |
85 | */ | |
8bde7f77 | 86 | for (i = 1; i < argc; ++i) { |
2dce551e | 87 | if ((cmdtp = find_cmd_tbl (argv[i], cmd_start, cmd_items )) != NULL) { |
94796d85 | 88 | rcode |= cmd_usage(cmdtp); |
71f95118 | 89 | } else { |
5dfa25f2 WD |
90 | printf ("Unknown command '%s' - try 'help'" |
91 | " without arguments for list of all" | |
8bde7f77 WD |
92 | " known commands\n\n", argv[i] |
93 | ); | |
5dfa25f2 WD |
94 | rcode = 1; |
95 | } | |
96 | } | |
97 | return rcode; | |
98 | } | |
99 | ||
100 | /*************************************************************************** | |
101 | * find command table entry for a command | |
102 | */ | |
b799cb4c | 103 | cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len) |
5dfa25f2 WD |
104 | { |
105 | cmd_tbl_t *cmdtp; | |
b799cb4c | 106 | cmd_tbl_t *cmdtp_temp = table; /*Init value */ |
9d2b18a0 WD |
107 | const char *p; |
108 | int len; | |
109 | int n_found = 0; | |
110 | ||
111 | /* | |
112 | * Some commands allow length modifiers (like "cp.b"); | |
113 | * compare command name only until first dot. | |
114 | */ | |
115 | len = ((p = strchr(cmd, '.')) == NULL) ? strlen (cmd) : (p - cmd); | |
116 | ||
b799cb4c KG |
117 | for (cmdtp = table; |
118 | cmdtp != table + table_len; | |
9d2b18a0 WD |
119 | cmdtp++) { |
120 | if (strncmp (cmd, cmdtp->name, len) == 0) { | |
121 | if (len == strlen (cmdtp->name)) | |
122 | return cmdtp; /* full match */ | |
123 | ||
124 | cmdtp_temp = cmdtp; /* abbreviated command ? */ | |
125 | n_found++; | |
126 | } | |
5dfa25f2 | 127 | } |
9d2b18a0 | 128 | if (n_found == 1) { /* exactly one match */ |
8bde7f77 | 129 | return cmdtp_temp; |
9d2b18a0 | 130 | } |
5dfa25f2 | 131 | |
9d2b18a0 | 132 | return NULL; /* not found or ambiguous command */ |
8bde7f77 | 133 | } |
04a85b3b | 134 | |
b799cb4c KG |
135 | cmd_tbl_t *find_cmd (const char *cmd) |
136 | { | |
137 | int len = &__u_boot_cmd_end - &__u_boot_cmd_start; | |
138 | return find_cmd_tbl(cmd, &__u_boot_cmd_start, len); | |
139 | } | |
140 | ||
94796d85 | 141 | int cmd_usage(cmd_tbl_t *cmdtp) |
62c3ae7c | 142 | { |
94796d85 WD |
143 | printf("%s - %s\n\n", cmdtp->name, cmdtp->usage); |
144 | ||
145 | #ifdef CONFIG_SYS_LONGHELP | |
146 | printf("Usage:\n%s ", cmdtp->name); | |
147 | ||
148 | if (!cmdtp->help) { | |
149 | puts ("- No additional help available.\n"); | |
150 | return 1; | |
151 | } | |
152 | ||
153 | puts (cmdtp->help); | |
154 | putc ('\n'); | |
155 | #endif /* CONFIG_SYS_LONGHELP */ | |
156 | return 0; | |
62c3ae7c PT |
157 | } |
158 | ||
04a85b3b WD |
159 | #ifdef CONFIG_AUTO_COMPLETE |
160 | ||
161 | int var_complete(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) | |
162 | { | |
163 | static char tmp_buf[512]; | |
164 | int space; | |
165 | ||
166 | space = last_char == '\0' || last_char == ' ' || last_char == '\t'; | |
167 | ||
168 | if (space && argc == 1) | |
169 | return env_complete("", maxv, cmdv, sizeof(tmp_buf), tmp_buf); | |
170 | ||
171 | if (!space && argc == 2) | |
172 | return env_complete(argv[1], maxv, cmdv, sizeof(tmp_buf), tmp_buf); | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | static void install_auto_complete_handler(const char *cmd, | |
178 | int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[])) | |
179 | { | |
180 | cmd_tbl_t *cmdtp; | |
181 | ||
182 | cmdtp = find_cmd(cmd); | |
183 | if (cmdtp == NULL) | |
184 | return; | |
185 | ||
186 | cmdtp->complete = complete; | |
187 | } | |
188 | ||
189 | void install_auto_complete(void) | |
190 | { | |
191 | install_auto_complete_handler("printenv", var_complete); | |
192 | install_auto_complete_handler("setenv", var_complete); | |
c3517f91 | 193 | #if defined(CONFIG_CMD_RUN) |
04a85b3b WD |
194 | install_auto_complete_handler("run", var_complete); |
195 | #endif | |
196 | } | |
197 | ||
198 | /*************************************************************************************/ | |
199 | ||
200 | static int complete_cmdv(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) | |
201 | { | |
202 | cmd_tbl_t *cmdtp; | |
203 | const char *p; | |
204 | int len, clen; | |
205 | int n_found = 0; | |
206 | const char *cmd; | |
207 | ||
208 | /* sanity? */ | |
209 | if (maxv < 2) | |
210 | return -2; | |
211 | ||
212 | cmdv[0] = NULL; | |
213 | ||
214 | if (argc == 0) { | |
215 | /* output full list of commands */ | |
216 | for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { | |
217 | if (n_found >= maxv - 2) { | |
218 | cmdv[n_found++] = "..."; | |
219 | break; | |
220 | } | |
221 | cmdv[n_found++] = cmdtp->name; | |
222 | } | |
223 | cmdv[n_found] = NULL; | |
224 | return n_found; | |
225 | } | |
226 | ||
227 | /* more than one arg or one but the start of the next */ | |
228 | if (argc > 1 || (last_char == '\0' || last_char == ' ' || last_char == '\t')) { | |
229 | cmdtp = find_cmd(argv[0]); | |
230 | if (cmdtp == NULL || cmdtp->complete == NULL) { | |
231 | cmdv[0] = NULL; | |
232 | return 0; | |
233 | } | |
234 | return (*cmdtp->complete)(argc, argv, last_char, maxv, cmdv); | |
235 | } | |
236 | ||
237 | cmd = argv[0]; | |
238 | /* | |
239 | * Some commands allow length modifiers (like "cp.b"); | |
240 | * compare command name only until first dot. | |
241 | */ | |
242 | p = strchr(cmd, '.'); | |
243 | if (p == NULL) | |
244 | len = strlen(cmd); | |
245 | else | |
246 | len = p - cmd; | |
247 | ||
248 | /* return the partial matches */ | |
249 | for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { | |
250 | ||
251 | clen = strlen(cmdtp->name); | |
252 | if (clen < len) | |
253 | continue; | |
254 | ||
255 | if (memcmp(cmd, cmdtp->name, len) != 0) | |
256 | continue; | |
257 | ||
258 | /* too many! */ | |
259 | if (n_found >= maxv - 2) { | |
260 | cmdv[n_found++] = "..."; | |
261 | break; | |
262 | } | |
263 | ||
264 | cmdv[n_found++] = cmdtp->name; | |
265 | } | |
266 | ||
267 | cmdv[n_found] = NULL; | |
268 | return n_found; | |
269 | } | |
270 | ||
271 | static int make_argv(char *s, int argvsz, char *argv[]) | |
272 | { | |
273 | int argc = 0; | |
274 | ||
275 | /* split into argv */ | |
276 | while (argc < argvsz - 1) { | |
277 | ||
278 | /* skip any white space */ | |
279 | while ((*s == ' ') || (*s == '\t')) | |
280 | ++s; | |
281 | ||
53677ef1 | 282 | if (*s == '\0') /* end of s, no more args */ |
04a85b3b WD |
283 | break; |
284 | ||
285 | argv[argc++] = s; /* begin of argument string */ | |
286 | ||
287 | /* find end of string */ | |
288 | while (*s && (*s != ' ') && (*s != '\t')) | |
289 | ++s; | |
290 | ||
291 | if (*s == '\0') /* end of s, no more args */ | |
292 | break; | |
293 | ||
294 | *s++ = '\0'; /* terminate current arg */ | |
295 | } | |
296 | argv[argc] = NULL; | |
297 | ||
298 | return argc; | |
299 | } | |
300 | ||
301 | static void print_argv(const char *banner, const char *leader, const char *sep, int linemax, char *argv[]) | |
302 | { | |
303 | int ll = leader != NULL ? strlen(leader) : 0; | |
304 | int sl = sep != NULL ? strlen(sep) : 0; | |
305 | int len, i; | |
306 | ||
307 | if (banner) { | |
308 | puts("\n"); | |
309 | puts(banner); | |
310 | } | |
311 | ||
312 | i = linemax; /* force leader and newline */ | |
313 | while (*argv != NULL) { | |
314 | len = strlen(*argv) + sl; | |
315 | if (i + len >= linemax) { | |
316 | puts("\n"); | |
317 | if (leader) | |
318 | puts(leader); | |
319 | i = ll - sl; | |
320 | } else if (sep) | |
321 | puts(sep); | |
322 | puts(*argv++); | |
323 | i += len; | |
324 | } | |
325 | printf("\n"); | |
326 | } | |
327 | ||
328 | static int find_common_prefix(char *argv[]) | |
329 | { | |
330 | int i, len; | |
331 | char *anchor, *s, *t; | |
332 | ||
333 | if (*argv == NULL) | |
334 | return 0; | |
335 | ||
336 | /* begin with max */ | |
337 | anchor = *argv++; | |
338 | len = strlen(anchor); | |
339 | while ((t = *argv++) != NULL) { | |
340 | s = anchor; | |
341 | for (i = 0; i < len; i++, t++, s++) { | |
342 | if (*t != *s) | |
343 | break; | |
344 | } | |
345 | len = s - anchor; | |
346 | } | |
347 | return len; | |
348 | } | |
349 | ||
6d0f6bcf | 350 | static char tmp_buf[CONFIG_SYS_CBSIZE]; /* copy of console I/O buffer */ |
04a85b3b WD |
351 | |
352 | int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp) | |
353 | { | |
354 | int n = *np, col = *colp; | |
6d0f6bcf | 355 | char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */ |
04a85b3b WD |
356 | char *cmdv[20]; |
357 | char *s, *t; | |
358 | const char *sep; | |
359 | int i, j, k, len, seplen, argc; | |
360 | int cnt; | |
361 | char last_char; | |
362 | ||
6d0f6bcf | 363 | if (strcmp(prompt, CONFIG_SYS_PROMPT) != 0) |
04a85b3b WD |
364 | return 0; /* not in normal console */ |
365 | ||
366 | cnt = strlen(buf); | |
367 | if (cnt >= 1) | |
368 | last_char = buf[cnt - 1]; | |
369 | else | |
370 | last_char = '\0'; | |
371 | ||
372 | /* copy to secondary buffer which will be affected */ | |
373 | strcpy(tmp_buf, buf); | |
374 | ||
375 | /* separate into argv */ | |
376 | argc = make_argv(tmp_buf, sizeof(argv)/sizeof(argv[0]), argv); | |
377 | ||
378 | /* do the completion and return the possible completions */ | |
379 | i = complete_cmdv(argc, argv, last_char, sizeof(cmdv)/sizeof(cmdv[0]), cmdv); | |
380 | ||
381 | /* no match; bell and out */ | |
382 | if (i == 0) { | |
383 | if (argc > 1) /* allow tab for non command */ | |
384 | return 0; | |
385 | putc('\a'); | |
386 | return 1; | |
387 | } | |
388 | ||
389 | s = NULL; | |
390 | len = 0; | |
391 | sep = NULL; | |
392 | seplen = 0; | |
393 | if (i == 1) { /* one match; perfect */ | |
394 | k = strlen(argv[argc - 1]); | |
395 | s = cmdv[0] + k; | |
396 | len = strlen(s); | |
397 | sep = " "; | |
398 | seplen = 1; | |
399 | } else if (i > 1 && (j = find_common_prefix(cmdv)) != 0) { /* more */ | |
400 | k = strlen(argv[argc - 1]); | |
401 | j -= k; | |
402 | if (j > 0) { | |
403 | s = cmdv[0] + k; | |
404 | len = j; | |
405 | } | |
406 | } | |
407 | ||
408 | if (s != NULL) { | |
409 | k = len + seplen; | |
410 | /* make sure it fits */ | |
6d0f6bcf | 411 | if (n + k >= CONFIG_SYS_CBSIZE - 2) { |
04a85b3b WD |
412 | putc('\a'); |
413 | return 1; | |
414 | } | |
415 | ||
416 | t = buf + cnt; | |
417 | for (i = 0; i < len; i++) | |
418 | *t++ = *s++; | |
419 | if (sep != NULL) | |
420 | for (i = 0; i < seplen; i++) | |
421 | *t++ = sep[i]; | |
422 | *t = '\0'; | |
423 | n += k; | |
424 | col += k; | |
425 | puts(t - k); | |
426 | if (sep == NULL) | |
427 | putc('\a'); | |
428 | *np = n; | |
429 | *colp = col; | |
430 | } else { | |
431 | print_argv(NULL, " ", " ", 78, cmdv); | |
432 | ||
433 | puts(prompt); | |
434 | puts(buf); | |
435 | } | |
436 | return 1; | |
437 | } | |
438 | ||
439 | #endif | |
8a40fb14 JCPV |
440 | |
441 | #ifdef CMD_DATA_SIZE | |
442 | int cmd_get_data_size(char* arg, int default_size) | |
443 | { | |
444 | /* Check for a size specification .b, .w or .l. | |
445 | */ | |
446 | int len = strlen(arg); | |
447 | if (len > 2 && arg[len-2] == '.') { | |
448 | switch(arg[len-1]) { | |
449 | case 'b': | |
450 | return 1; | |
451 | case 'w': | |
452 | return 2; | |
453 | case 'l': | |
454 | return 4; | |
455 | case 's': | |
456 | return -2; | |
457 | default: | |
458 | return -1; | |
459 | } | |
460 | } | |
461 | return default_size; | |
462 | } | |
463 | #endif |