1 | /* |
---|
2 | * Command parsing routines for RTEMS monitor |
---|
3 | * |
---|
4 | * TODO: |
---|
5 | * |
---|
6 | * $Id$ |
---|
7 | */ |
---|
8 | |
---|
9 | #ifdef HAVE_CONFIG_H |
---|
10 | #include "config.h" |
---|
11 | #endif |
---|
12 | |
---|
13 | #include <rtems.h> |
---|
14 | |
---|
15 | #include <rtems/monitor.h> |
---|
16 | |
---|
17 | #include <stdio.h> |
---|
18 | #include <string.h> |
---|
19 | #include <stdlib.h> |
---|
20 | #include <inttypes.h> |
---|
21 | |
---|
22 | #ifndef MONITOR_PROMPT |
---|
23 | #define MONITOR_PROMPT "rtems" /* will have '> ' appended */ |
---|
24 | #endif |
---|
25 | |
---|
26 | /* |
---|
27 | * 2001-01-30 KJO (vac4050@cae597.rsc.raytheon.com): |
---|
28 | * Fixed rtems_monitor_command_lookup() to accept partial |
---|
29 | * commands to uniqeness. Added support for setting |
---|
30 | * the monitor prompt via an environment variable: |
---|
31 | * RTEMS_MONITOR_PROMPT |
---|
32 | * |
---|
33 | * CCJ: 26-3-2000, adding command history and command line |
---|
34 | * editing. This code is donated from My Right Boot and not |
---|
35 | * covered by GPL, only the RTEMS license. |
---|
36 | */ |
---|
37 | |
---|
38 | /* |
---|
39 | * Some key labels to define special keys. |
---|
40 | */ |
---|
41 | |
---|
42 | #define KEYS_EXTENDED (0x8000) |
---|
43 | #define KEYS_NORMAL_MASK (0x00ff) |
---|
44 | #define KEYS_INS (0) |
---|
45 | #define KEYS_DEL (1) |
---|
46 | #define KEYS_UARROW (2) |
---|
47 | #define KEYS_DARROW (3) |
---|
48 | #define KEYS_LARROW (4) |
---|
49 | #define KEYS_RARROW (5) |
---|
50 | #define KEYS_HOME (6) |
---|
51 | #define KEYS_END (7) |
---|
52 | #define KEYS_F1 (8) |
---|
53 | #define KEYS_F2 (9) |
---|
54 | #define KEYS_F3 (10) |
---|
55 | #define KEYS_F4 (11) |
---|
56 | #define KEYS_F5 (12) |
---|
57 | #define KEYS_F6 (13) |
---|
58 | #define KEYS_F7 (14) |
---|
59 | #define KEYS_F8 (15) |
---|
60 | #define KEYS_F9 (16) |
---|
61 | #define KEYS_F10 (17) |
---|
62 | |
---|
63 | #define RTEMS_COMMAND_BUFFER_SIZE (75) |
---|
64 | |
---|
65 | static char monitor_prompt[32]; |
---|
66 | #ifndef RTEMS_UNIX |
---|
67 | static char buffer[RTEMS_COMMAND_BUFFER_SIZE]; |
---|
68 | static int pos; |
---|
69 | static int logged_in; |
---|
70 | #endif |
---|
71 | /* |
---|
72 | * History data. |
---|
73 | */ |
---|
74 | |
---|
75 | #define RTEMS_COMMAND_HISTORIES (20) |
---|
76 | |
---|
77 | #ifndef RTEMS_UNIX |
---|
78 | static char history_buffer[RTEMS_COMMAND_HISTORIES][RTEMS_COMMAND_BUFFER_SIZE]; |
---|
79 | static int history_pos[RTEMS_COMMAND_HISTORIES]; |
---|
80 | static int history; |
---|
81 | static int history_next; |
---|
82 | #endif |
---|
83 | |
---|
84 | /* |
---|
85 | * Translation tables. Not sure if this is the best way to |
---|
86 | * handle this, how-ever I wish to avoid the overhead of |
---|
87 | * including a more complete and standard environment such |
---|
88 | * as ncurses. |
---|
89 | */ |
---|
90 | |
---|
91 | struct translation_table |
---|
92 | { |
---|
93 | char expecting; |
---|
94 | struct translation_table *branch; |
---|
95 | unsigned int key; |
---|
96 | }; |
---|
97 | |
---|
98 | #ifndef RTEMS_UNIX |
---|
99 | static struct translation_table trans_two[] = |
---|
100 | { |
---|
101 | { '~', 0, KEYS_INS }, |
---|
102 | { 0, 0, 0 } |
---|
103 | }; |
---|
104 | |
---|
105 | static struct translation_table trans_three[] = |
---|
106 | { |
---|
107 | { '~', 0, KEYS_DEL }, |
---|
108 | { 0, 0, 0 } |
---|
109 | }; |
---|
110 | |
---|
111 | static struct translation_table trans_tab_csi[] = |
---|
112 | { |
---|
113 | { '2', trans_two, 0 }, |
---|
114 | { '3', trans_three, 0 }, |
---|
115 | { 'A', 0, KEYS_UARROW }, |
---|
116 | { 'B', 0, KEYS_DARROW }, |
---|
117 | { 'D', 0, KEYS_LARROW }, |
---|
118 | { 'C', 0, KEYS_RARROW }, |
---|
119 | { 'F', 0, KEYS_END }, |
---|
120 | { 'H', 0, KEYS_HOME }, |
---|
121 | { 0, 0, 0 } |
---|
122 | }; |
---|
123 | |
---|
124 | static struct translation_table trans_tab_O[] = |
---|
125 | { |
---|
126 | { '1', 0, KEYS_F1 }, |
---|
127 | { '2', 0, KEYS_F2 }, |
---|
128 | { '3', 0, KEYS_F3 }, |
---|
129 | { '4', 0, KEYS_F4 }, |
---|
130 | { '5', 0, KEYS_F5 }, |
---|
131 | { '6', 0, KEYS_F6 }, |
---|
132 | { '7', 0, KEYS_F7 }, |
---|
133 | { '8', 0, KEYS_F8 }, |
---|
134 | { '9', 0, KEYS_F9 }, |
---|
135 | { ':', 0, KEYS_F10 }, |
---|
136 | { 'P', 0, KEYS_F1 }, |
---|
137 | { 'Q', 0, KEYS_F2 }, |
---|
138 | { 'R', 0, KEYS_F3 }, |
---|
139 | { 'S', 0, KEYS_F4 }, |
---|
140 | { 'T', 0, KEYS_F5 }, |
---|
141 | { 'U', 0, KEYS_F6 }, |
---|
142 | { 'V', 0, KEYS_F7 }, |
---|
143 | { 'W', 0, KEYS_F8 }, |
---|
144 | { 'X', 0, KEYS_F9 }, |
---|
145 | { 'Y', 0, KEYS_F10 }, |
---|
146 | { 0, 0, 0 } |
---|
147 | }; |
---|
148 | |
---|
149 | static struct translation_table trans_tab[] = |
---|
150 | { |
---|
151 | { '[', trans_tab_csi, 0 }, /* CSI command sequences */ |
---|
152 | { 'O', trans_tab_O, 0 }, /* O are the fuction keys */ |
---|
153 | { 0, 0, 0 } |
---|
154 | }; |
---|
155 | #endif |
---|
156 | |
---|
157 | /* |
---|
158 | * Perform a basic translation for some ANSI/VT100 key codes. |
---|
159 | * This code could do with a timeout on the ESC as it is |
---|
160 | * now lost from the input stream. It is not* used by the |
---|
161 | * line editor below so considiered not worth the effort. |
---|
162 | */ |
---|
163 | |
---|
164 | #ifndef RTEMS_UNIX |
---|
165 | static unsigned int |
---|
166 | rtems_monitor_getchar (void) |
---|
167 | { |
---|
168 | struct translation_table *translation = 0; |
---|
169 | for (;;) |
---|
170 | { |
---|
171 | char c = getchar (); |
---|
172 | if (c == 27) |
---|
173 | translation = trans_tab; |
---|
174 | else |
---|
175 | { |
---|
176 | /* |
---|
177 | * If no translation happing just pass through |
---|
178 | * and return the key. |
---|
179 | */ |
---|
180 | if (translation) |
---|
181 | { |
---|
182 | /* |
---|
183 | * Scan the current table for the key, and if found |
---|
184 | * see if this key is a fork. If so follow it and |
---|
185 | * wait else return the extended key. |
---|
186 | */ |
---|
187 | int index = 0; |
---|
188 | int branched = 0; |
---|
189 | while ((translation[index].expecting != '\0') || |
---|
190 | (translation[index].key != '\0')) |
---|
191 | { |
---|
192 | if (translation[index].expecting == c) |
---|
193 | { |
---|
194 | /* |
---|
195 | * A branch is take if more keys are to come. |
---|
196 | */ |
---|
197 | if (translation[index].branch == 0) |
---|
198 | return KEYS_EXTENDED | translation[index].key; |
---|
199 | else |
---|
200 | { |
---|
201 | translation = translation[index].branch; |
---|
202 | branched = 1; |
---|
203 | break; |
---|
204 | } |
---|
205 | } |
---|
206 | index++; |
---|
207 | } |
---|
208 | /* |
---|
209 | * Who knows what these keys are, just drop them. |
---|
210 | */ |
---|
211 | if (!branched) |
---|
212 | translation = 0; |
---|
213 | } |
---|
214 | else |
---|
215 | return c; |
---|
216 | } |
---|
217 | } |
---|
218 | } |
---|
219 | #endif |
---|
220 | |
---|
221 | #ifndef RTEMS_UNIX |
---|
222 | /* |
---|
223 | * The line editor with history. |
---|
224 | */ |
---|
225 | |
---|
226 | static int |
---|
227 | rtems_monitor_line_editor ( |
---|
228 | char *command |
---|
229 | ) |
---|
230 | { |
---|
231 | int repeating = 0; |
---|
232 | |
---|
233 | memset (buffer, 0, RTEMS_COMMAND_BUFFER_SIZE); |
---|
234 | history = history_next; |
---|
235 | pos = 0; |
---|
236 | |
---|
237 | if (!logged_in) |
---|
238 | fprintf(stdout,"\nMonitor ready, press enter to login.\n\n"); |
---|
239 | else |
---|
240 | fprintf(stdout,"%s $ ", monitor_prompt); |
---|
241 | |
---|
242 | while (1) |
---|
243 | { |
---|
244 | unsigned int extended_key; |
---|
245 | char c; |
---|
246 | |
---|
247 | fflush (stdout); |
---|
248 | |
---|
249 | extended_key = rtems_monitor_getchar (); |
---|
250 | c = extended_key & KEYS_NORMAL_MASK; |
---|
251 | |
---|
252 | /* |
---|
253 | * Make the extended_key usable as a boolean. |
---|
254 | */ |
---|
255 | extended_key &= ~KEYS_NORMAL_MASK; |
---|
256 | |
---|
257 | if (!extended_key && !logged_in) |
---|
258 | { |
---|
259 | if (c == '\n') |
---|
260 | { |
---|
261 | logged_in = 1; |
---|
262 | /* |
---|
263 | * The prompt has changed from `>' to `$' to help know |
---|
264 | * which version of the monitor code people are using. |
---|
265 | */ |
---|
266 | fprintf(stdout,"%s $ ", monitor_prompt); |
---|
267 | } |
---|
268 | } |
---|
269 | else |
---|
270 | { |
---|
271 | if (extended_key) |
---|
272 | { |
---|
273 | switch (c) |
---|
274 | { |
---|
275 | case KEYS_END: |
---|
276 | fprintf(stdout,buffer + pos); |
---|
277 | pos = (int) strlen (buffer); |
---|
278 | break; |
---|
279 | |
---|
280 | case KEYS_HOME: |
---|
281 | fprintf(stdout,"\r%s $ ", monitor_prompt); |
---|
282 | pos = 0; |
---|
283 | break; |
---|
284 | |
---|
285 | case KEYS_LARROW: |
---|
286 | if (pos > 0) |
---|
287 | { |
---|
288 | pos--; |
---|
289 | putchar ('\b'); |
---|
290 | } |
---|
291 | break; |
---|
292 | |
---|
293 | case KEYS_RARROW: |
---|
294 | if ((pos < RTEMS_COMMAND_BUFFER_SIZE) && (buffer[pos] != '\0')) |
---|
295 | { |
---|
296 | putchar (buffer[pos]); |
---|
297 | pos++; |
---|
298 | } |
---|
299 | break; |
---|
300 | |
---|
301 | case KEYS_UARROW: |
---|
302 | /* |
---|
303 | * If we are moving up the histories then we need to save the working |
---|
304 | * buffer. |
---|
305 | */ |
---|
306 | if (history) |
---|
307 | { |
---|
308 | int end; |
---|
309 | int bs; |
---|
310 | if (history == history_next) |
---|
311 | { |
---|
312 | memcpy (history_buffer[history_next], buffer, |
---|
313 | RTEMS_COMMAND_BUFFER_SIZE); |
---|
314 | history_pos[history_next] = pos; |
---|
315 | } |
---|
316 | history--; |
---|
317 | memcpy (buffer, history_buffer[history], |
---|
318 | RTEMS_COMMAND_BUFFER_SIZE); |
---|
319 | pos = history_pos[history]; |
---|
320 | fprintf(stdout,"\r%*c", RTEMS_COMMAND_BUFFER_SIZE, ' '); |
---|
321 | fprintf(stdout,"\r%s $ %s", monitor_prompt, buffer); |
---|
322 | end = (int) strlen (buffer); |
---|
323 | for (bs = 0; bs < (end - pos); bs++) |
---|
324 | putchar ('\b'); |
---|
325 | } |
---|
326 | break; |
---|
327 | |
---|
328 | case KEYS_DARROW: |
---|
329 | if (history < history_next) |
---|
330 | { |
---|
331 | int end; |
---|
332 | int bs; |
---|
333 | history++; |
---|
334 | memcpy (buffer, history_buffer[history], |
---|
335 | RTEMS_COMMAND_BUFFER_SIZE); |
---|
336 | pos = history_pos[history]; |
---|
337 | fprintf(stdout,"\r%*c", RTEMS_COMMAND_BUFFER_SIZE, ' '); |
---|
338 | fprintf(stdout,"\r%s $ %s", monitor_prompt, buffer); |
---|
339 | end = (int) strlen (buffer); |
---|
340 | for (bs = 0; bs < (end - pos); bs++) |
---|
341 | putchar ('\b'); |
---|
342 | } |
---|
343 | break; |
---|
344 | |
---|
345 | case KEYS_DEL: |
---|
346 | if (buffer[pos] != '\0') |
---|
347 | { |
---|
348 | int end; |
---|
349 | int bs; |
---|
350 | strcpy (&buffer[pos], &buffer[pos + 1]); |
---|
351 | fprintf(stdout,"\r%s $ %s", monitor_prompt, buffer); |
---|
352 | end = (int) strlen (buffer); |
---|
353 | for (bs = 0; bs < (end - pos); bs++) |
---|
354 | putchar ('\b'); |
---|
355 | } |
---|
356 | break; |
---|
357 | } |
---|
358 | } |
---|
359 | else |
---|
360 | { |
---|
361 | switch (c) |
---|
362 | { |
---|
363 | case '\b': |
---|
364 | case '\x7e': |
---|
365 | case '\x7f': |
---|
366 | if (pos > 0) |
---|
367 | { |
---|
368 | int bs; |
---|
369 | pos--; |
---|
370 | strcpy (buffer + pos, buffer + pos + 1); |
---|
371 | fprintf(stdout,"\b%s \b", buffer + pos); |
---|
372 | for (bs = 0; bs < ((int) strlen (buffer) - pos); bs++) |
---|
373 | putchar ('\b'); |
---|
374 | } |
---|
375 | break; |
---|
376 | |
---|
377 | case '\n': |
---|
378 | /* |
---|
379 | * Process the command. |
---|
380 | */ |
---|
381 | fprintf(stdout,"\n"); |
---|
382 | repeating = 1; |
---|
383 | /* |
---|
384 | * Only process the history if we have a command and |
---|
385 | *a history. |
---|
386 | */ |
---|
387 | if (strlen (buffer)) |
---|
388 | { |
---|
389 | if (history_next && (history == history_next)) |
---|
390 | { |
---|
391 | /* |
---|
392 | * Do not place the last command into the history |
---|
393 | *if the same. |
---|
394 | */ |
---|
395 | if (strcmp (history_buffer[history_next - 1], buffer)) |
---|
396 | repeating = 0; |
---|
397 | } |
---|
398 | else |
---|
399 | repeating = 0; |
---|
400 | } |
---|
401 | if (!repeating) |
---|
402 | { |
---|
403 | memcpy (history_buffer[history_next], buffer, |
---|
404 | RTEMS_COMMAND_BUFFER_SIZE); |
---|
405 | history_pos[history_next] = pos; |
---|
406 | if (history_next < (RTEMS_COMMAND_HISTORIES - 1)) |
---|
407 | history_next++; |
---|
408 | else |
---|
409 | { |
---|
410 | memmove (history_buffer[0], history_buffer[1], |
---|
411 | RTEMS_COMMAND_BUFFER_SIZE * (RTEMS_COMMAND_HISTORIES - 1)); |
---|
412 | memmove (&history_pos[0], &history_pos[1], |
---|
413 | sizeof (history_pos[0]) * (RTEMS_COMMAND_HISTORIES - 1)); |
---|
414 | } |
---|
415 | } |
---|
416 | else |
---|
417 | { |
---|
418 | #ifdef ENABLE_ENTER_REPEATS |
---|
419 | if (history_next) |
---|
420 | memcpy (buffer, history_buffer[history_next - 1], |
---|
421 | RTEMS_COMMAND_BUFFER_SIZE); |
---|
422 | #endif |
---|
423 | } |
---|
424 | memmove (command, buffer, RTEMS_COMMAND_BUFFER_SIZE); |
---|
425 | return repeating; |
---|
426 | break; |
---|
427 | |
---|
428 | default: |
---|
429 | if ((pos < (RTEMS_COMMAND_BUFFER_SIZE - 1)) && |
---|
430 | (c >= ' ') && (c <= 'z')) |
---|
431 | { |
---|
432 | int end; |
---|
433 | end = strlen (buffer); |
---|
434 | if ((pos < end) && (end < RTEMS_COMMAND_BUFFER_SIZE)) |
---|
435 | { |
---|
436 | int ch, bs; |
---|
437 | for (ch = end + 1; ch > pos; ch--) |
---|
438 | buffer[ch] = buffer[ch - 1]; |
---|
439 | fprintf(stdout,buffer + pos); |
---|
440 | for (bs = 0; bs < (end - pos + 1); bs++) |
---|
441 | putchar ('\b'); |
---|
442 | } |
---|
443 | buffer[pos++] = c; |
---|
444 | if (pos > end) |
---|
445 | buffer[pos] = '\0'; |
---|
446 | putchar (c); |
---|
447 | } |
---|
448 | break; |
---|
449 | } |
---|
450 | } |
---|
451 | } |
---|
452 | } |
---|
453 | } |
---|
454 | #endif |
---|
455 | |
---|
456 | /* |
---|
457 | * make_argv(cp): token-count |
---|
458 | * Break up the command line in 'cp' into global argv[] and argc (return |
---|
459 | * value). |
---|
460 | */ |
---|
461 | |
---|
462 | int |
---|
463 | rtems_monitor_make_argv( |
---|
464 | char *cp, |
---|
465 | int *argc_p, |
---|
466 | char **argv) |
---|
467 | { |
---|
468 | int argc = 0; |
---|
469 | |
---|
470 | while ((cp = strtok(cp, " \t\n\r"))) |
---|
471 | { |
---|
472 | argv[argc++] = cp; |
---|
473 | cp = (char *) NULL; |
---|
474 | } |
---|
475 | argv[argc] = (char *) NULL; /* end of argv */ |
---|
476 | |
---|
477 | return *argc_p = argc; |
---|
478 | } |
---|
479 | |
---|
480 | |
---|
481 | /* |
---|
482 | * Read and break up a monitor command |
---|
483 | * |
---|
484 | * We have to loop on the gets call, since it will return NULL under UNIX |
---|
485 | * RTEMS when we get a signal (eg: SIGALRM). |
---|
486 | */ |
---|
487 | |
---|
488 | int |
---|
489 | rtems_monitor_command_read(char *command, |
---|
490 | int *argc, |
---|
491 | char **argv) |
---|
492 | { |
---|
493 | char *env_prompt; |
---|
494 | |
---|
495 | env_prompt = getenv("RTEMS_MONITOR_PROMPT"); |
---|
496 | |
---|
497 | /* |
---|
498 | * put node number in the prompt if we are multiprocessing |
---|
499 | */ |
---|
500 | #if defined(RTEMS_MULTIPROCESSING) |
---|
501 | if (!rtems_configuration_get_user_multiprocessing_table ()) |
---|
502 | sprintf (monitor_prompt, "%s", |
---|
503 | (env_prompt == NULL) ? MONITOR_PROMPT: env_prompt); |
---|
504 | else /* .... */ |
---|
505 | #endif |
---|
506 | if (rtems_monitor_default_node != rtems_monitor_node) |
---|
507 | sprintf (monitor_prompt, "%" PRId32 "-%s-%" PRId32 "", rtems_monitor_node, |
---|
508 | (env_prompt == NULL) ? MONITOR_PROMPT : env_prompt, |
---|
509 | rtems_monitor_default_node); |
---|
510 | else |
---|
511 | sprintf (monitor_prompt, "%" PRId32 "-%s", rtems_monitor_node, |
---|
512 | (env_prompt == NULL) ? MONITOR_PROMPT : env_prompt); |
---|
513 | |
---|
514 | #if defined(RTEMS_UNIX) |
---|
515 | /* RTEMS on unix gets so many interrupt system calls this is hosed */ |
---|
516 | fprintf(stdout,"%s> ", monitor_prompt); |
---|
517 | fflush (stdout); |
---|
518 | while (gets(command) == (char *) 0) |
---|
519 | ; |
---|
520 | #else |
---|
521 | rtems_monitor_line_editor (command); |
---|
522 | #endif |
---|
523 | |
---|
524 | return rtems_monitor_make_argv (command, argc, argv); |
---|
525 | } |
---|
526 | |
---|
527 | /* |
---|
528 | * Look up a command in a command table |
---|
529 | * |
---|
530 | */ |
---|
531 | |
---|
532 | rtems_monitor_command_entry_t * |
---|
533 | rtems_monitor_command_lookup( |
---|
534 | rtems_monitor_command_entry_t *table, |
---|
535 | int argc, |
---|
536 | char **argv |
---|
537 | ) |
---|
538 | { |
---|
539 | int command_length; |
---|
540 | rtems_monitor_command_entry_t *found_it = NULL; |
---|
541 | |
---|
542 | command_length = strlen (argv[0]); |
---|
543 | |
---|
544 | if ((table == 0) || (argv[0] == 0)) |
---|
545 | return 0; |
---|
546 | |
---|
547 | while (table) |
---|
548 | { |
---|
549 | if (table->command) |
---|
550 | { |
---|
551 | |
---|
552 | /* |
---|
553 | * Check for ambiguity |
---|
554 | */ |
---|
555 | if (!strncmp (table->command, argv[0], command_length)) |
---|
556 | { |
---|
557 | if (found_it) |
---|
558 | { |
---|
559 | return 0; |
---|
560 | } |
---|
561 | |
---|
562 | else |
---|
563 | found_it = table; |
---|
564 | } |
---|
565 | } |
---|
566 | table = table->next; |
---|
567 | } |
---|
568 | |
---|
569 | /* |
---|
570 | * No ambiguity (the possible partial command was unique after all) |
---|
571 | */ |
---|
572 | if (found_it) |
---|
573 | { |
---|
574 | if (found_it->command_function == 0) |
---|
575 | return 0; |
---|
576 | |
---|
577 | return found_it; |
---|
578 | } |
---|
579 | |
---|
580 | return 0; |
---|
581 | } |
---|
582 | |
---|
583 | static void |
---|
584 | rtems_monitor_show_help ( |
---|
585 | rtems_monitor_command_entry_t *help_cmd, |
---|
586 | int max_cmd_len |
---|
587 | ) |
---|
588 | { |
---|
589 | #define MAX_HELP_LINE_LENGTH (75 - max_cmd_len - 2) |
---|
590 | |
---|
591 | if (help_cmd && help_cmd->command) |
---|
592 | { |
---|
593 | const char *help = help_cmd->usage; |
---|
594 | int help_len = strlen (help); |
---|
595 | int spaces = max_cmd_len - strlen (help_cmd->command); |
---|
596 | int show_this_line = 0; |
---|
597 | int line_one = 1; |
---|
598 | int c; |
---|
599 | |
---|
600 | fprintf(stdout,"%s", help_cmd->command); |
---|
601 | |
---|
602 | if (help_len == 0) |
---|
603 | { |
---|
604 | fprintf(stdout," - No help associated.\n"); |
---|
605 | return; |
---|
606 | } |
---|
607 | |
---|
608 | while (help_len) |
---|
609 | { |
---|
610 | fprintf(stdout,"%*c", spaces, ' '); |
---|
611 | |
---|
612 | if (line_one) |
---|
613 | fprintf(stdout," - "); |
---|
614 | |
---|
615 | spaces = max_cmd_len + 2; |
---|
616 | line_one = 0; |
---|
617 | |
---|
618 | /* |
---|
619 | * See if greater then the line length if so, work back |
---|
620 | * from the end for a space, tab or lf or cr. |
---|
621 | */ |
---|
622 | |
---|
623 | if (help_len > MAX_HELP_LINE_LENGTH) |
---|
624 | { |
---|
625 | for (show_this_line = MAX_HELP_LINE_LENGTH - 1; |
---|
626 | show_this_line; |
---|
627 | show_this_line--) |
---|
628 | if ((help[show_this_line] == ' ') || |
---|
629 | (help[show_this_line] == '\n') || |
---|
630 | (help[show_this_line] == '\r')) |
---|
631 | break; |
---|
632 | |
---|
633 | /* |
---|
634 | * If show_this_line is 0, it is a very long word !! |
---|
635 | */ |
---|
636 | |
---|
637 | if (show_this_line == 0) |
---|
638 | show_this_line = MAX_HELP_LINE_LENGTH - 1; |
---|
639 | } |
---|
640 | else |
---|
641 | show_this_line = help_len; |
---|
642 | |
---|
643 | for (c = 0; c < show_this_line; c++) |
---|
644 | if ((help[c] == '\r') || (help[c] == '\n')) |
---|
645 | show_this_line = c; |
---|
646 | else |
---|
647 | putchar (help[c]); |
---|
648 | |
---|
649 | fprintf(stdout,"\n"); |
---|
650 | |
---|
651 | help += show_this_line; |
---|
652 | help_len -= show_this_line; |
---|
653 | |
---|
654 | /* |
---|
655 | * Move past the line feeds or what ever else is being skipped. |
---|
656 | */ |
---|
657 | |
---|
658 | while (help_len) |
---|
659 | { |
---|
660 | if ((*help != '\r') && (*help != '\n')) |
---|
661 | break; |
---|
662 | |
---|
663 | if (*help != ' ') |
---|
664 | { |
---|
665 | help++; |
---|
666 | help_len--; |
---|
667 | break; |
---|
668 | } |
---|
669 | help++; |
---|
670 | help_len--; |
---|
671 | } |
---|
672 | } |
---|
673 | } |
---|
674 | } |
---|
675 | |
---|
676 | void |
---|
677 | rtems_monitor_command_usage( |
---|
678 | rtems_monitor_command_entry_t *table, |
---|
679 | char *command_string |
---|
680 | ) |
---|
681 | { |
---|
682 | rtems_monitor_command_entry_t *command = table; |
---|
683 | int max_cmd_len = 0; |
---|
684 | |
---|
685 | /* if first entry in table is a usage, then print it out */ |
---|
686 | |
---|
687 | if (command_string && (*command_string != '\0')) |
---|
688 | { |
---|
689 | char *argv[2]; |
---|
690 | |
---|
691 | argv[0] = command_string; |
---|
692 | argv[1] = 0; |
---|
693 | |
---|
694 | command = rtems_monitor_command_lookup (table, 1, argv); |
---|
695 | |
---|
696 | if (command) |
---|
697 | rtems_monitor_show_help (command, strlen (command_string)); |
---|
698 | else |
---|
699 | fprintf(stdout,"Unrecognised command; try just 'help'\n"); |
---|
700 | return; |
---|
701 | } |
---|
702 | |
---|
703 | /* |
---|
704 | * Find the largest command size. |
---|
705 | */ |
---|
706 | |
---|
707 | while (command) |
---|
708 | { |
---|
709 | int len = command->command ? strlen (command->command) : 0 ; |
---|
710 | |
---|
711 | if (len > max_cmd_len) |
---|
712 | max_cmd_len = len; |
---|
713 | |
---|
714 | command = command->next; |
---|
715 | } |
---|
716 | |
---|
717 | max_cmd_len++; |
---|
718 | |
---|
719 | command = table; |
---|
720 | |
---|
721 | /* |
---|
722 | * Now some nice formatting for the help. |
---|
723 | */ |
---|
724 | |
---|
725 | while (command) |
---|
726 | { |
---|
727 | rtems_monitor_show_help (command, max_cmd_len); |
---|
728 | command = command->next; |
---|
729 | } |
---|
730 | } |
---|
731 | |
---|
732 | |
---|
733 | void |
---|
734 | rtems_monitor_help_cmd( |
---|
735 | int argc, |
---|
736 | char **argv, |
---|
737 | rtems_monitor_command_arg_t *command_arg, |
---|
738 | boolean verbose |
---|
739 | ) |
---|
740 | { |
---|
741 | int arg; |
---|
742 | rtems_monitor_command_entry_t *command; |
---|
743 | |
---|
744 | command = command_arg->monitor_command_entry; |
---|
745 | |
---|
746 | if (argc == 1) |
---|
747 | rtems_monitor_command_usage(command, 0); |
---|
748 | else |
---|
749 | { |
---|
750 | for (arg = 1; argv[arg]; arg++) |
---|
751 | rtems_monitor_command_usage(command, argv[arg]); |
---|
752 | } |
---|
753 | } |
---|