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1 | /* | |
2 | * Copyright 1987 by the Massachusetts Institute of Technology. | |
3 | * For copying and distribution information, see the file | |
4 | * "mit-copyright.h". | |
5 | * | |
6 | * $Source$ | |
7 | * $Author$ | |
8 | * $Header$ | |
9 | * | |
10 | * Generic menu system module. | |
11 | * | |
12 | * Basically, we define an enormous tree structure which represents the | |
13 | * menu. Some extra pieces (ml_command, ma_doc) get thrown in so we can | |
14 | * also use the structure for a command-based system. | |
15 | * | |
16 | * By making the menu descriptions so general, we can ease porting to just | |
17 | * about anything. | |
18 | */ | |
19 | ||
20 | #ifndef lint | |
21 | static char rcsid_menu_c[] = "$Header$"; | |
22 | #endif | |
23 | ||
24 | #include <mit-copyright.h> | |
25 | #include <sys/types.h> | |
26 | #include <stdio.h> | |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
29 | #include <signal.h> | |
30 | #include <curses.h> | |
31 | #include <unistd.h> | |
32 | #include <termios.h> | |
33 | #include <stdarg.h> | |
34 | #include <ctype.h> | |
35 | #include <com_err.h> | |
36 | #include <moira.h> | |
37 | #include "menu.h" | |
38 | ||
39 | #define MAX(A, B) ((A) > (B) ? (A) : (B)) | |
40 | #define MIN(A, B) ((A) < (B) ? (A) : (B)) | |
41 | #define CTL(ch) ((ch) & 037) | |
42 | ||
43 | #define MIN_INPUT 2 /* Minimum number of lines for input window */ | |
44 | ||
45 | extern int interrupt; /* will be set if ^C is received */ | |
46 | extern char *whoami; | |
47 | ||
48 | FILE *log_file = (FILE *) NULL; /* file stream of log file */ | |
49 | int more_flg = 1; | |
50 | ||
51 | /* Structure for holding current displayed menu */ | |
52 | struct menu_screen { | |
53 | WINDOW *ms_screen; /* Window for this menu */ | |
54 | WINDOW *ms_title; /* Title subwindow */ | |
55 | WINDOW *ms_menu; /* Menu subwindow */ | |
56 | WINDOW *ms_input; /* Input subwindow */ | |
57 | int ms_input_y; /* Input subwindow reference coordinate */ | |
58 | } *cur_ms; | |
59 | ||
60 | #define NULLMS ((struct menu_screen *) 0) | |
61 | ||
62 | Menu *top_menu; /* Root for command search */ | |
63 | int parsed_argc; /* used by extern routines to get additional */ | |
64 | char **parsed_argv; /* comand line input */ | |
65 | ||
66 | /* | |
67 | * Hook function to cause error messages to be printed through | |
68 | * curses instead of around it. Takes at most 5 args to the | |
69 | * printf string (crock...) | |
70 | */ | |
71 | ||
72 | void menu_com_err_hook(const char *who, long code, const char *fmt, | |
73 | caddr_t arg1, caddr_t arg2, caddr_t arg3, | |
74 | caddr_t arg4, caddr_t arg5) | |
75 | { | |
76 | char buf[BUFSIZ], *cp; | |
77 | ||
78 | strcpy(buf, who); | |
79 | for (cp = buf; *cp; cp++) | |
80 | ; | |
81 | *cp++ = ':'; | |
82 | *cp++ = ' '; | |
83 | if (code) | |
84 | { | |
85 | strcpy(cp, error_message(code)); | |
86 | while (*cp) | |
87 | cp++; | |
88 | } | |
89 | sprintf(cp, fmt, arg1, arg2, arg3, arg4, arg5); | |
90 | Put_message(buf); | |
91 | } | |
92 | ||
93 | /* | |
94 | * Start_menu takes a menu as an argument. It initializes curses u.s.w., | |
95 | * and a quit in any submenu should unwind back to here. (it might not, | |
96 | * if user functions which run their own menus don't cooperate.) | |
97 | * Start_menu should only be called once, at the start of the program. | |
98 | */ | |
99 | int Start_menu(Menu *m) | |
100 | { | |
101 | struct menu_screen *make_ms(); | |
102 | register void (*old_hook)(const char *, long, const char *, va_list) = | |
103 | set_com_err_hook((void (*) (const char *, long, const char *, va_list))menu_com_err_hook); | |
104 | ||
105 | if (initscr() == (WINDOW *)ERR) | |
106 | { | |
107 | fputs("Can't initialize curses!\n", stderr); | |
108 | Start_no_menu(m); | |
109 | } | |
110 | else | |
111 | { | |
112 | raw(); /* We parse & print everything ourselves */ | |
113 | noecho(); | |
114 | cur_ms = make_ms(0); /* So we always have some current */ | |
115 | /* menu_screen */ | |
116 | /* Run the menu */ | |
117 | Do_menu(m, -1, NULL); | |
118 | } | |
119 | set_com_err_hook(old_hook); | |
120 | Cleanup_menu(); | |
121 | } | |
122 | ||
123 | int Cleanup_menu(void) | |
124 | { | |
125 | if (cur_ms) | |
126 | { | |
127 | wclear(cur_ms->ms_screen); | |
128 | wrefresh(cur_ms->ms_screen); | |
129 | } | |
130 | endwin(); | |
131 | } | |
132 | ||
133 | ||
134 | /* Like Start_menu, except it doesn't print menus and doesn't use curses */ | |
135 | int Start_no_menu(Menu *m) | |
136 | { | |
137 | cur_ms = NULLMS; | |
138 | COLS = 80; | |
139 | /* Run the menu */ | |
140 | Do_menu(m, -1, NULL); | |
141 | } | |
142 | ||
143 | /* | |
144 | * Create a new menu screen template with the specified menu length | |
145 | * and return it. | |
146 | */ | |
147 | struct menu_screen *make_ms(int length) | |
148 | { | |
149 | struct menu_screen *ms; | |
150 | ||
151 | if (MAX_TITLE + length + MIN_INPUT > LINES) | |
152 | { | |
153 | fputs("Menu too big!\n", stderr); | |
154 | exit(2); | |
155 | } | |
156 | ||
157 | ms = malloc(sizeof(struct menu_screen)); | |
158 | ||
159 | ms->ms_screen = newwin(0, 0, 0, 0); | |
160 | ms->ms_title = subwin(ms->ms_screen, MAX_TITLE, 0, 0, 0); | |
161 | ms->ms_menu = subwin(ms->ms_screen, length, 0, MAX_TITLE, 0); | |
162 | ms->ms_input = subwin(ms->ms_screen, 0, 0, | |
163 | ms->ms_input_y = MAX_TITLE + length, | |
164 | 0); | |
165 | ||
166 | scrollok(ms->ms_input, TRUE); | |
167 | wmove(ms->ms_input, 0, 0); | |
168 | wclear(ms->ms_screen); | |
169 | ||
170 | return ms; | |
171 | } | |
172 | ||
173 | /* | |
174 | * This routine destroys a menu_screen. | |
175 | */ | |
176 | int destroy_ms(struct menu_screen *ms) | |
177 | { | |
178 | delwin(ms->ms_title); | |
179 | delwin(ms->ms_menu); | |
180 | delwin(ms->ms_input); | |
181 | delwin(ms->ms_screen); | |
182 | free(ms); | |
183 | } | |
184 | ||
185 | /* | |
186 | * This guy actually puts up the menu | |
187 | * Note: if margc < 0, no 'r' option will be displayed (i.e., on the | |
188 | * top level menu) | |
189 | */ | |
190 | int Do_menu(Menu *m, int margc, char *margv[]) | |
191 | { | |
192 | struct menu_screen *my_ms = NULLMS, *old_cur_ms = NULLMS; | |
193 | char argvals[MAX_ARGC][MAX_ARGLEN]; /* This is where args are stored */ | |
194 | char buf[MAX_ARGC * MAX_ARGLEN]; | |
195 | char *argv[MAX_ARGC]; | |
196 | int line; | |
197 | int i; | |
198 | struct menu_line *command, *Find_command(); | |
199 | int argc; | |
200 | int quitflag, is_topmenu = (margc < 0); | |
201 | int toggle_logging(); | |
202 | ||
203 | /* Entry function gets called with old menu_screen still current */ | |
204 | if (m->m_entry != NULLFUNC) | |
205 | { | |
206 | if (m->m_entry(m, margc, margv) == DM_QUIT) | |
207 | return DM_NORMAL; | |
208 | if (parsed_argc > 0) | |
209 | { | |
210 | margc = parsed_argc + 1; | |
211 | margv = --parsed_argv; | |
212 | } | |
213 | else | |
214 | { | |
215 | margc--; | |
216 | margv++; | |
217 | } | |
218 | } | |
219 | ||
220 | parsed_argc = 0; | |
221 | ||
222 | /* The following get run only in curses mode */ | |
223 | if (cur_ms != NULLMS) | |
224 | { | |
225 | /* Get a menu_screen */ | |
226 | old_cur_ms = cur_ms; | |
227 | /* 2 is for the 2 obligatory lines; quit and toggle */ | |
228 | cur_ms = my_ms = make_ms(m->m_length + 2 + (is_topmenu ? 0 : 1)); | |
229 | ||
230 | /* Now print the title and the menu */ | |
231 | wclear(my_ms->ms_screen); | |
232 | wrefresh(my_ms->ms_screen); | |
233 | wmove(my_ms->ms_title, 0, MAX(0, (COLS - strlen(m->m_title)) >> 1)); | |
234 | wstandout(my_ms->ms_title); | |
235 | waddstr(my_ms->ms_title, m->m_title); | |
236 | wstandend(my_ms->ms_title); | |
237 | ||
238 | for (line = 0; line < m->m_length; line++) | |
239 | { | |
240 | int len = strlen(m->m_lines[line].ml_command); | |
241 | if (len > 12) | |
242 | len = 12; | |
243 | ||
244 | wmove(my_ms->ms_menu, line, 0); | |
245 | ||
246 | wprintw(my_ms->ms_menu, "%2d. (%s)%*s %s.", line + 1, | |
247 | m->m_lines[line].ml_command, 12 - len, "", | |
248 | m->m_lines[line].ml_doc); | |
249 | } | |
250 | wmove(my_ms->ms_menu, line++, 0); | |
251 | if (!is_topmenu) | |
252 | { | |
253 | waddstr(my_ms->ms_menu, | |
254 | " r. (return) Return to previous menu."); | |
255 | wmove(my_ms->ms_menu, line++, 0); | |
256 | } | |
257 | waddstr(my_ms->ms_menu, " t. (toggle) Toggle logging on and off."); | |
258 | wmove(my_ms->ms_menu, line, 0); | |
259 | waddstr(my_ms->ms_menu, " q. (quit) Quit."); | |
260 | } | |
261 | else | |
262 | { | |
263 | Put_message(m->m_title); | |
264 | for (line = 0; line < m->m_length; line++) | |
265 | { | |
266 | sprintf(buf, "%2d. (%s)%*s %s.", line + 1, | |
267 | m->m_lines[line].ml_command, | |
268 | 12 - strlen(m->m_lines[line].ml_command), "", | |
269 | m->m_lines[line].ml_doc); | |
270 | Put_message(buf); | |
271 | } | |
272 | if (!is_topmenu) | |
273 | Put_message(" r. (return) Return to previous menu."); | |
274 | Put_message(" t. (toggle) Toggle logging on and off."); | |
275 | Put_message(" q. (quit) Quit."); | |
276 | Put_message(" ?. Print this information."); | |
277 | } | |
278 | ||
279 | for (;;) | |
280 | { | |
281 | /* This will be set by a return val from func or submenu */ | |
282 | quitflag = DM_NORMAL; | |
283 | /* This is here because we may be coming from another menu */ | |
284 | if (cur_ms != NULL) | |
285 | { | |
286 | touchwin(my_ms->ms_screen); | |
287 | wrefresh(my_ms->ms_screen); | |
288 | } | |
289 | if (margc > 1) | |
290 | { | |
291 | /* Initialize argv */ | |
292 | for (argc = 0; argc < MAX_ARGC; argc++) | |
293 | argv[argc] = argvals[argc]; | |
294 | argc = margc - 1; | |
295 | for (i = 1; i < margc; i++) | |
296 | strcpy(argvals[i - 1], margv[i]); | |
297 | margc = 0; | |
298 | } | |
299 | else | |
300 | { | |
301 | /* Get a command */ | |
302 | if (!Prompt_input("Command: ", buf, sizeof(buf))) | |
303 | { | |
304 | if (cur_ms == NULLMS && feof(stdin)) | |
305 | sprintf(buf, "quit"); | |
306 | else | |
307 | continue; | |
308 | } | |
309 | /* Parse it into the argument list */ | |
310 | /* If there's nothing there, try again */ | |
311 | /* Initialize argv */ | |
312 | for (argc = 0; argc < MAX_ARGC; argc++) | |
313 | argv[argc] = argvals[argc]; | |
314 | ||
315 | if ((argc = Parse_words(buf, argv, MAX_ARGLEN)) == 0) | |
316 | continue; | |
317 | } | |
318 | if ((line = atoi(argv[0])) > 0 && line <= m->m_length) | |
319 | command = &m->m_lines[line - 1]; | |
320 | else if ((!is_topmenu && | |
321 | (!strcmp(argv[0], "r") || !strcmp(argv[0], "return"))) || | |
322 | !strcmp(argv[0], "q") || !strcmp(argv[0], "quit")) | |
323 | { | |
324 | /* here if it's either return or quit */ | |
325 | if (cur_ms != NULLMS) | |
326 | { | |
327 | cur_ms = old_cur_ms; | |
328 | destroy_ms(my_ms); | |
329 | } | |
330 | if (m->m_exit != NULLFUNC) | |
331 | m->m_exit(m); | |
332 | return *argv[0] == 'r' ? DM_NORMAL : DM_QUIT; | |
333 | } | |
334 | else if (argv[0][0] == '?') | |
335 | { | |
336 | for (line = 0; line < m->m_length; line++) | |
337 | { | |
338 | sprintf(buf, "%2d. (%s)%*s %s.", line + 1, | |
339 | m->m_lines[line].ml_command, | |
340 | 12 - strlen(m->m_lines[line].ml_command), "", | |
341 | m->m_lines[line].ml_doc); | |
342 | Put_message(buf); | |
343 | } | |
344 | if (!is_topmenu) | |
345 | Put_message(" r. (return) Return to previous menu."); | |
346 | Put_message(" t. (toggle) Toggle logging on and off."); | |
347 | Put_message(" q. (quit) Quit."); | |
348 | continue; | |
349 | } | |
350 | else if (!strcmp(argv[0], "t") || !strcmp(argv[0], "toggle")) | |
351 | { | |
352 | toggle_logging(argc, argv); | |
353 | continue; | |
354 | } | |
355 | /* finally, try to find it using Find_command */ | |
356 | else if (!(command = Find_command(m, argvals[0]))) | |
357 | { | |
358 | sprintf(buf, "Command not recognized: %s\n", argvals[0]); | |
359 | Put_message(buf); | |
360 | continue; | |
361 | } | |
362 | /* If we got to here, command is a valid menu_line */ | |
363 | /* Send the offical command name into the argv */ | |
364 | strcpy(argvals[0], command->ml_command); | |
365 | /* Show that we're working on it */ | |
366 | Put_message(command->ml_doc); | |
367 | /* Print args that we've already got */ | |
368 | for (i = 1; i < argc; i++) | |
369 | { | |
370 | if (!command->ml_args[i].ma_prompt) | |
371 | break; | |
372 | sprintf(buf, "%s%s", command->ml_args[i].ma_prompt, argv[i]); | |
373 | Put_message(buf); | |
374 | } | |
375 | /* Get remaining arguments, if any */ | |
376 | for (; argc < command->ml_argc; argc++) | |
377 | { | |
378 | if (!Prompt_input(command->ml_args[argc].ma_prompt, | |
379 | argvals[argc], sizeof(argvals[argc]))) | |
380 | goto punt_command; | |
381 | } | |
382 | parsed_argc = argc - command->ml_argc; | |
383 | parsed_argv = &(argv[command->ml_argc]); | |
384 | if (command->ml_function != NULLFUNC) | |
385 | { | |
386 | /* If it's got a function, call it */ | |
387 | quitflag = command->ml_function(argc, argv); | |
388 | } | |
389 | else if (command->ml_submenu != NULLMENU) | |
390 | { | |
391 | /* Else see if it is a submenu */ | |
392 | quitflag = Do_menu(command->ml_submenu, argc, argv); | |
393 | } | |
394 | else | |
395 | { | |
396 | /* If it's got neither, something is wrong */ | |
397 | Put_message("*INTERNAL ERROR: NO FUNCTION OR MENU FOR LINE*"); | |
398 | } | |
399 | if (quitflag == DM_QUIT) | |
400 | { | |
401 | if (cur_ms != NULLMS) | |
402 | { | |
403 | cur_ms = old_cur_ms; | |
404 | destroy_ms(my_ms); | |
405 | } | |
406 | if (m->m_exit != NULLFUNC) | |
407 | m->m_exit(m); | |
408 | parsed_argc = 0; | |
409 | return DM_QUIT; | |
410 | } | |
411 | punt_command: | |
412 | parsed_argc = 0; | |
413 | } | |
414 | } | |
415 | ||
416 | int refresh_screen(void) | |
417 | { | |
418 | if (cur_ms != NULLMS) | |
419 | { | |
420 | touchwin(cur_ms->ms_screen); | |
421 | refresh_ms(cur_ms); | |
422 | } | |
423 | } | |
424 | ||
425 | ||
426 | /* Prompt the user for input in the input window of cur_ms */ | |
427 | int Prompt_input(char *prompt, char *buf, int buflen) | |
428 | { | |
429 | int c; | |
430 | char *p; | |
431 | int y, x, oldx, oldy; | |
432 | ||
433 | if (cur_ms != NULLMS) | |
434 | { | |
435 | more_flg = 1; | |
436 | getyx(cur_ms->ms_input, y, x); | |
437 | wmove(cur_ms->ms_input, y, 0); | |
438 | ||
439 | refresh_screen(); | |
440 | waddstr(cur_ms->ms_input, prompt); | |
441 | getyx(cur_ms->ms_input, y, x); | |
442 | ||
443 | oldx = x; | |
444 | oldy = y; | |
445 | p = buf; | |
446 | while (1) | |
447 | { | |
448 | wmove(cur_ms->ms_input, y, x); | |
449 | touchwin(cur_ms->ms_screen); | |
450 | wclrtoeol(cur_ms->ms_input); | |
451 | wrefresh(cur_ms->ms_input); | |
452 | c = getchar() & 0x7f; | |
453 | switch (c) | |
454 | { | |
455 | case CTL('C'): | |
456 | *p = '\0'; | |
457 | return 0; | |
458 | case CTL('Z'): | |
459 | kill(getpid(), SIGTSTP); | |
460 | touchwin(cur_ms->ms_screen); | |
461 | break; | |
462 | case CTL('L'): | |
463 | wclear(cur_ms->ms_input); | |
464 | wmove(cur_ms->ms_input, 0, 0); | |
465 | waddstr(cur_ms->ms_input, prompt); | |
466 | touchwin(cur_ms->ms_input); | |
467 | wrefresh(cur_ms->ms_screen); | |
468 | getyx(cur_ms->ms_input, y, x); | |
469 | oldy = y; | |
470 | oldx = x; | |
471 | p = buf; | |
472 | break; | |
473 | ||
474 | case '\n': | |
475 | case '\r': | |
476 | goto end_input; | |
477 | /* these should be obtained by doing ioctl() on tty */ | |
478 | case '\b': | |
479 | case '\177': | |
480 | if (p > buf) | |
481 | { | |
482 | p--; | |
483 | x--; | |
484 | if (x < 0) | |
485 | { | |
486 | wmove(cur_ms->ms_input, y, 0); | |
487 | wclrtoeol(cur_ms->ms_input); | |
488 | y--; | |
489 | #ifdef __NetBSD__ | |
490 | x = cur_ms->ms_input->maxx - 1; | |
491 | #else | |
492 | x = cur_ms->ms_input->_maxx - 1; | |
493 | #endif | |
494 | } | |
495 | } | |
496 | break; | |
497 | case CTL('U'): | |
498 | case CTL('G'): | |
499 | case CTL('['): | |
500 | x = oldx; | |
501 | y = oldy; | |
502 | p = buf; | |
503 | break; | |
504 | default: | |
505 | /* (buflen - 1) leaves room for the \0 */ | |
506 | if (isprint(c) && (p - buf < buflen - 1)) | |
507 | { | |
508 | waddch(cur_ms->ms_input, c); | |
509 | *p++ = c; | |
510 | x++; | |
511 | #ifdef __NetBSD__ | |
512 | if (x >= cur_ms->ms_input->maxx) | |
513 | #else | |
514 | if (x >= cur_ms->ms_input->_maxx) | |
515 | #endif | |
516 | { | |
517 | x = 0; | |
518 | y++; | |
519 | } | |
520 | } | |
521 | else | |
522 | putchar(CTL('G')); | |
523 | break; | |
524 | } | |
525 | } | |
526 | end_input: | |
527 | waddch(cur_ms->ms_input, '\n'); | |
528 | ||
529 | wclrtoeol(cur_ms->ms_input); | |
530 | refresh_ms(cur_ms); | |
531 | *p = '\0'; | |
532 | Start_paging(); | |
533 | goto gotit; | |
534 | } | |
535 | else | |
536 | { | |
537 | printf("%s", prompt); | |
538 | if (!fgets(buf, buflen, stdin)) | |
539 | return 0; | |
540 | if (interrupt) | |
541 | { | |
542 | interrupt = 0; | |
543 | return 0; | |
544 | } | |
545 | Start_paging(); | |
546 | goto gotit; | |
547 | } | |
548 | gotit: | |
549 | strcpy(buf, strtrim(buf)); | |
550 | return 1; | |
551 | } | |
552 | ||
553 | int lines_left; | |
554 | ||
555 | /* Start paging */ | |
556 | /* This routine will cause the most recently put message to be the | |
557 | one at the top of the screen when a ---More--- prompt is displayed */ | |
558 | int Start_paging(void) | |
559 | { | |
560 | if (cur_ms != NULLMS) | |
561 | lines_left = LINES - cur_ms->ms_input_y - 1; | |
562 | else | |
563 | lines_left = 23; | |
564 | } | |
565 | ||
566 | /* Turn off paging */ | |
567 | int Stop_paging(void) | |
568 | { | |
569 | lines_left = -1; | |
570 | } | |
571 | ||
572 | /* Print a message in the input window of cur_ms. */ | |
573 | int Put_message(char *msg) | |
574 | { | |
575 | char *copy, *line, *s; | |
576 | ||
577 | copy = malloc(COLS); | |
578 | s = line = msg; | |
579 | if (log_file) | |
580 | { | |
581 | /* if we're doing logging; we assume that the file has already | |
582 | been opened. */ | |
583 | fprintf(log_file, "%s\n", msg); | |
584 | fflush(log_file); | |
585 | } | |
586 | ||
587 | while (*s++) | |
588 | { | |
589 | if (s - line >= COLS - 1) | |
590 | { | |
591 | strncpy(copy, line, COLS - 1); | |
592 | copy[COLS - 1] = '\0'; | |
593 | line += COLS - 1; | |
594 | } | |
595 | else if (*s == '\n') | |
596 | { | |
597 | *s = '\0'; | |
598 | strcpy(copy, line); | |
599 | line = ++s; | |
600 | } | |
601 | else | |
602 | continue; | |
603 | Put_line(copy); | |
604 | } | |
605 | Put_line(line); | |
606 | free(copy); | |
607 | } | |
608 | ||
609 | /* Will be truncated to COLS characters. */ | |
610 | int Put_line(char *msg) | |
611 | { | |
612 | int y, x, i; | |
613 | char *msg1, chr; | |
614 | ||
615 | if (!more_flg) | |
616 | return; | |
617 | ||
618 | if (lines_left >= 0) | |
619 | { | |
620 | if (--lines_left == 0) | |
621 | { | |
622 | /* Give the user a more prompt */ | |
623 | if (cur_ms != NULLMS) | |
624 | { | |
625 | wstandout(cur_ms->ms_input); | |
626 | wprintw(cur_ms->ms_input, "---More---"); | |
627 | wstandend(cur_ms->ms_input); | |
628 | refresh_ms(cur_ms); | |
629 | chr = getchar() & 0x7f;/* We do care what it is */ | |
630 | if (chr == 'q' || chr == 'Q' || chr == 3 /* ^C */) | |
631 | { | |
632 | more_flg = 0; | |
633 | return; | |
634 | } | |
635 | getyx(cur_ms->ms_input, y, x); | |
636 | /* x is a bitbucket; avoid lint problems */ | |
637 | x = x; | |
638 | wmove(cur_ms->ms_input, y, 0); | |
639 | wclrtoeol(cur_ms->ms_input); | |
640 | } | |
641 | else | |
642 | { | |
643 | printf("---More (hit return)---"); | |
644 | getchar(); | |
645 | } | |
646 | Start_paging(); /* Reset lines_left */ | |
647 | } | |
648 | } | |
649 | ||
650 | if (cur_ms != NULLMS) | |
651 | { | |
652 | msg1 = calloc(COLS, 1); | |
653 | strncpy(msg1, msg, COLS - 1); | |
654 | for (i = strlen(msg1); i < COLS - 1; i++) | |
655 | msg1[i] = ' '; | |
656 | wprintw(cur_ms->ms_input, "%s\n", msg1); | |
657 | } | |
658 | else | |
659 | puts(msg); | |
660 | } | |
661 | ||
662 | /* Refresh a menu_screen onto the real screen */ | |
663 | int refresh_ms(struct menu_screen *ms) | |
664 | { | |
665 | wrefresh(ms->ms_title); | |
666 | wrefresh(ms->ms_menu); | |
667 | wrefresh(ms->ms_input); | |
668 | } | |
669 | ||
670 | /* Parse buf into a list of words, which will be placed in strings specified by | |
671 | argv. Space for these strings must have already been allocated. | |
672 | Only the first n characters of each word will be copied */ | |
673 | int Parse_words(char *buf, char *argv[], int n) | |
674 | { | |
675 | char *start, *end; /* For sausage machine */ | |
676 | int argc; | |
677 | ||
678 | start = buf; | |
679 | for (argc = 0; argc < MAX_ARGC; argc++) | |
680 | { | |
681 | while (isspace(*start)) | |
682 | start++; /* Kill whitespace */ | |
683 | if (*start == '\0') | |
684 | break; /* Nothing left */ | |
685 | /* Now find the end of the word */ | |
686 | for (end = start; *end != '\0' && !isspace(*end); end++) | |
687 | ; | |
688 | strncpy(argv[argc], start, MIN(end - start, n)); /* Copy it */ | |
689 | argv[argc][MIN(end - start, n - 1)] = '\0'; /* Terminate */ | |
690 | start = end; | |
691 | } | |
692 | return argc; | |
693 | } | |
694 | ||
695 | /* This is the internal form of Find_command, which recursively searches | |
696 | for a menu_line with command command in the specified menu */ | |
697 | /* It will search to a maximum depth of d */ | |
698 | struct menu_line *find_command_from(char *c, struct menu *m, int d) | |
699 | { | |
700 | int line; | |
701 | struct menu_line *maybe; | |
702 | ||
703 | if (d < 0) | |
704 | return NULL; /* Too deep! */ | |
705 | for (line = 0; line < m->m_length; line++) | |
706 | { | |
707 | if (!strcmp(c, m->m_lines[line].ml_command)) | |
708 | return &m->m_lines[line]; | |
709 | } | |
710 | for (line = 0; line < m->m_length; line++) | |
711 | { | |
712 | if (m->m_lines[line].ml_submenu != NULLMENU && | |
713 | (maybe = find_command_from(c, m->m_lines[line].ml_submenu, d - 1))) | |
714 | return maybe; | |
715 | } | |
716 | /* If we got to here, nothing works */ | |
717 | return NULL; | |
718 | } | |
719 | ||
720 | /* Find_command searches down the current menu tree */ | |
721 | /* And returns a pointer to a menu_line with the specified command name */ | |
722 | /* It returns (struct menu_line *) 0 if none is found */ | |
723 | struct menu_line *Find_command(Menu *m, char *command) | |
724 | { | |
725 | if (m == NULLMENU) | |
726 | return NULL; | |
727 | else | |
728 | return find_command_from(command, m, MAX_MENU_DEPTH); | |
729 | } | |
730 | ||
731 | int toggle_logging(int argc, char *argv[]) | |
732 | { | |
733 | int pid; | |
734 | char buf[BUFSIZ]; | |
735 | ||
736 | if (!log_file) | |
737 | { | |
738 | pid = getpid(); | |
739 | if (!whoami) | |
740 | { | |
741 | Put_message("I've lost my SENSE of DIRECTION! I have no IDEA who I AM!"); | |
742 | Put_message("My God... You've turned him into a DEMOCRAT!!"); | |
743 | Put_message(" -- Doonesbury"); | |
744 | Put_message(""); | |
745 | Put_message("translation: your log file can be found in \"/usr/tmp/a.out.pid\"."); | |
746 | whoami = "a.out"; | |
747 | sprintf(buf, "/usr/tmp/%s-log.%d", whoami, pid); | |
748 | } | |
749 | else | |
750 | sprintf(buf, "/usr/tmp/%s-log.%d", whoami, pid); | |
751 | ||
752 | /* open the file */ | |
753 | log_file = fopen(buf, "a"); | |
754 | ||
755 | if (!log_file) | |
756 | Put_message("Open of log file failed. Logging is not on."); | |
757 | else | |
758 | Put_message("Log file successfully opened."); | |
759 | } | |
760 | else | |
761 | { /* log_file is a valid pointer; turn off logging. */ | |
762 | fflush(log_file); | |
763 | fclose(log_file); | |
764 | log_file = NULL; | |
765 | Put_message("Logging off."); | |
766 | } | |
767 | return DM_NORMAL; | |
768 | } |