gui: Don't close command fds if a key was pressed.
[paraslash.git] / gui.c
1 /*
2 * Copyright (C) 1998-2014 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file gui.c Curses-based interface for paraslash. */
8
9 #include <regex.h>
10 #include <signal.h>
11 #include <sys/types.h>
12 #include <curses.h>
13 #include <locale.h>
14 #include <sys/time.h>
15
16 #include "gui.cmdline.h"
17 #include "para.h"
18 #include "gui.h"
19 #include "string.h"
20 #include "ringbuffer.h"
21 #include "fd.h"
22 #include "error.h"
23 #include "list.h"
24 #include "sched.h"
25 #include "signal.h"
26 #include "ggo.h"
27 #include "version.h"
28
29 /** define the array of error lists needed by para_gui */
30 INIT_GUI_ERRLISTS;
31 static char *stat_content[NUM_STAT_ITEMS];
32
33 #define STANDARD_STATUS_BAR "para_gui " PACKAGE_VERSION " (hit ? for help)"
34
35 static int signal_pipe;
36
37 static struct gui_window {
38 WINDOW *win;
39 size_t begx;
40 size_t begy;
41 size_t cols;
42 size_t lines;
43 } top, bot, sb, in, sep;
44
45 #define RINGBUFFER_SIZE 512
46 struct rb_entry {
47 char *msg;
48 size_t len;
49 int color;
50 };
51 static struct ringbuffer *bot_win_rb;
52 #define NUM_LINES(len) (1 + (len) / bot.cols)
53
54 static unsigned scroll_position;
55
56 static bool curses_active;
57 static pid_t cmd_pid;
58
59 static int command_fds[2] = {-1, -1};
60 static int stat_pipe = -1;
61 static struct gui_args_info conf;
62
63 enum {GETCH_MODE, COMMAND_MODE, EXTERNAL_MODE};
64
65
66 /**
67 * Codes for various colors.
68 *
69 * Each status item has its own color pair. The ones defined here start at a
70 * higher number so that they do not overlap with these.
71 */
72 enum gui_color_pair {
73 COLOR_STATUSBAR = NUM_STAT_ITEMS + 1,
74 COLOR_COMMAND,
75 COLOR_OUTPUT,
76 COLOR_MSG,
77 COLOR_ERRMSG,
78 COLOR_WELCOME,
79 COLOR_SEPARATOR,
80 COLOR_TOP,
81 COLOR_BOT,
82 };
83
84 struct gui_command {
85 const char *key;
86 const char *name;
87 const char *description;
88 void (*handler)(void);
89 };
90
91 static struct gui_theme theme;
92
93 static int _argc;
94 static char **_argv;
95
96 static void com_help(void);
97 static void com_reread_conf(void);
98 static void com_enlarge_top_win(void);
99 static void com_shrink_top_win(void);
100 static void com_version(void);
101 __noreturn static void com_quit(void);
102 static void com_refresh(void);
103 static void com_ll_incr(void);
104 static void com_ll_decr(void);
105 static void com_prev_theme(void);
106 static void com_next_theme(void);
107 static void com_scroll_up(void);
108 static void com_scroll_down(void);
109 static void com_page_up(void);
110 static void com_page_down(void);
111 static void com_cancel_scrolling(void);
112 static void com_scroll_top(void);
113
114 static struct gui_command command_list[] = {
115 {
116 .key = "?",
117 .name = "help",
118 .description = "print help",
119 .handler = com_help
120 }, {
121 .key = "+",
122 .name = "enlarge_win",
123 .description = "enlarge the top window",
124 .handler = com_enlarge_top_win
125 }, {
126 .key = "-",
127 .name = "shrink_win",
128 .description = "shrink the top window",
129 .handler = com_shrink_top_win
130 }, {
131 .key = "r",
132 .name = "reread_conf",
133 .description = "reread configuration file",
134 .handler = com_reread_conf
135 }, {
136 .key = "q",
137 .name = "quit",
138 .description = "exit para_gui",
139 .handler = com_quit
140 }, {
141 .key = "^L",
142 .name = "refresh",
143 .description = "redraw the screen",
144 .handler = com_refresh
145 }, {
146 .key = ".",
147 .name = "next_theme",
148 .description = "switch to next theme",
149 .handler = com_next_theme
150 }, {
151 .key = ",",
152 .name = "prev_theme",
153 .description = "switch to previous stream",
154 .handler = com_prev_theme
155 }, {
156 .key = ">",
157 .name = "ll_incr",
158 .description = "increase loglevel (decreases verbosity)",
159 .handler = com_ll_incr
160 }, {
161 .key = "<",
162 .name = "ll_decr",
163 .description = "decrease loglevel (increases verbosity)",
164 .handler = com_ll_decr
165 }, {
166 .key = "V",
167 .name = "version",
168 .description = "show the para_gui version",
169 .handler = com_version
170 }, {
171 .key = "<up>",
172 .name = "scroll_up",
173 .description = "scroll up one line",
174 .handler = com_scroll_up
175 }, {
176 .key = "<down>",
177 .name = "scroll_down",
178 .description = "scroll down one line",
179 .handler = com_scroll_down
180 }, {
181 .key = "<ppage>",
182 .name = "page_up",
183 .description = "scroll up one page",
184 .handler = com_page_up
185 }, {
186 .key = "<npage>",
187 .name = "page_down",
188 .description = "scroll down one page",
189 .handler = com_page_down
190 }, {
191 .key = "<home>",
192 .name = "scroll_top",
193 .description = "scroll to top of buffer",
194 .handler = com_scroll_top
195 }, {
196 .key = "<end>",
197 .name = "cancel_scroll",
198 .description = "deactivate scroll mode",
199 .handler = com_cancel_scrolling
200 }, {
201 .handler = NULL
202 }
203 };
204
205 static int find_cmd_byname(char *name)
206 {
207 int i;
208
209 for (i = 0; command_list[i].handler; i++)
210 if (!strcmp(command_list[i].name, name))
211 return i;
212 return -1;
213 }
214
215 /* taken from mutt */
216 static char *km_keyname(int c)
217 {
218 static char buf[10];
219
220 if (c == KEY_UP) {
221 sprintf(buf, "<up>");
222 return buf;
223 }
224 if (c == KEY_DOWN) {
225 sprintf(buf, "<down>");
226 return buf;
227 }
228 if (c == KEY_LEFT) {
229 sprintf(buf, "<left>");
230 return buf;
231 }
232 if (c == KEY_RIGHT) {
233 sprintf(buf, "<right>");
234 return buf;
235 }
236 if (c == KEY_NPAGE) {
237 sprintf(buf, "<npage>");
238 return buf;
239 }
240 if (c == KEY_PPAGE) {
241 sprintf(buf, "<ppage>");
242 return buf;
243 }
244 if (c == KEY_HOME) {
245 sprintf(buf, "<home>");
246 return buf;
247 }
248 if (c == KEY_END) {
249 sprintf(buf, "<end>");
250 return buf;
251 }
252 if (c < 256 && c > -128 && iscntrl((unsigned char) c)) {
253 if (c < 0)
254 c += 256;
255 if (c < 128) {
256 buf[0] = '^';
257 buf[1] = (c + '@') & 0x7f;
258 buf[2] = 0;
259 } else
260 snprintf(buf, sizeof(buf), "\\%d%d%d", c >> 6,
261 (c >> 3) & 7, c & 7);
262 } else if (c >= KEY_F0 && c < KEY_F(256))
263 sprintf(buf, "<F%d>", c - KEY_F0);
264 else if (isprint(c))
265 snprintf(buf, sizeof(buf), "%c", (unsigned char) c);
266 else
267 snprintf(buf, sizeof(buf), "\\x%hx", (unsigned short) c);
268 return buf;
269 }
270
271 static char *configfile_exists(void)
272 {
273 static char *config_file;
274 char *tmp;
275
276 if (!conf.config_file_given) {
277 if (!config_file) {
278 char *home = para_homedir();
279 config_file = make_message("%s/.paraslash/gui.conf",
280 home);
281 free(home);
282 }
283 tmp = config_file;
284 } else
285 tmp = conf.config_file_arg;
286 return file_exists(tmp)? tmp: NULL;
287 }
288
289 /* Print given number of spaces to curses window. */
290 static void add_spaces(WINDOW* win, unsigned int num)
291 {
292 char space[] = " ";
293 unsigned sz = sizeof(space) - 1; /* number of spaces */
294
295 while (num >= sz) {
296 waddstr(win, space);
297 num -= sz;
298 }
299 if (num > 0) {
300 assert(num < sz);
301 space[num] = '\0';
302 waddstr(win, space);
303 }
304 }
305
306 /*
307 * print aligned string to curses window. This function always prints
308 * exactly len chars.
309 */
310 static int align_str(WINDOW* win, char *str, unsigned int len,
311 unsigned int align)
312 {
313 int ret, i, num; /* of spaces */
314 size_t width;
315
316 if (!win || !str)
317 return 0;
318 ret = strwidth(str, &width);
319 if (ret < 0) {
320 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
321 width = 0;
322 str[0] = '\0';
323 }
324 num = len - width;
325 if (num < 0) {
326 str[len] = '\0';
327 num = 0;
328 }
329 /* replace control characters by spaces */
330 for (i = 0; i < len && str[i]; i++) {
331 if (str[i] == '\n' || str[i] == '\r' || str[i] == '\f')
332 str[i] = ' ';
333 }
334 if (align == LEFT) {
335 waddstr(win, str);
336 add_spaces(win, num);
337 } else if (align == RIGHT) {
338 add_spaces(win, num);
339 waddstr(win, str);
340 } else {
341 add_spaces(win, num / 2);
342 waddstr(win, str[0]? str: "");
343 add_spaces(win, num - num / 2);
344 }
345 return 1;
346 }
347
348 __printf_2_3 static void print_in_bar(int color, const char *fmt,...)
349 {
350 char *msg;
351 va_list ap;
352
353 if (!curses_active)
354 return;
355 wattron(in.win, COLOR_PAIR(color));
356 va_start(ap, fmt);
357 xvasprintf(&msg, fmt, ap);
358 va_end(ap);
359 wmove(in.win, 0, 0);
360 align_str(in.win, msg, in.cols, LEFT);
361 free(msg);
362 wrefresh(in.win);
363 }
364
365 /*
366 * update the status bar
367 */
368 static void print_status_bar(void)
369 {
370 char *tmp;
371
372 if (!curses_active)
373 return;
374 tmp = para_strdup(STANDARD_STATUS_BAR);
375 wmove(sb.win, 0, 0);
376 align_str(sb.win, tmp, sb.cols, CENTER);
377 free(tmp);
378 wrefresh(sb.win);
379 }
380
381 /*
382 * get the number of the oldest rbe that is (partially) visible. On return,
383 * lines contains the sum of the number of lines of all visible entries. If the
384 * first one is only partially visible, lines is greater than bot.lines.
385 */
386 static int first_visible_rbe(unsigned *lines)
387 {
388 int i;
389 *lines = 0;
390 for (i = scroll_position; i < RINGBUFFER_SIZE; i++) {
391 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, i);
392 int rbe_lines;
393 if (!rbe)
394 return i - 1;
395 // fprintf(stderr, "found: %s\n", rbe->msg);
396 rbe_lines = NUM_LINES(rbe->len);
397 if (rbe_lines > bot.lines)
398 return -1;
399 *lines += rbe_lines;
400 if (*lines >= bot.lines)
401 return i;
402 }
403 return RINGBUFFER_SIZE - 1;
404 }
405
406 /*
407 returns number of first visible rbe, *lines is the number of lines drawn.
408 */
409 static int draw_top_rbe(unsigned *lines)
410 {
411 int ret, fvr = first_visible_rbe(lines);
412 struct rb_entry *rbe;
413 size_t bytes_to_skip, cells_to_skip, width;
414
415 if (fvr < 0)
416 return -1;
417 wmove(bot.win, 0, 0);
418 rbe = ringbuffer_get(bot_win_rb, fvr);
419 if (!rbe)
420 return -1;
421 if (*lines > bot.lines) {
422 /* rbe is partially visible multi-line */
423 cells_to_skip = (*lines - bot.lines) * bot.cols;
424 ret = skip_cells(rbe->msg, cells_to_skip, &bytes_to_skip);
425 if (ret < 0)
426 return ret;
427 ret = strwidth(rbe->msg + bytes_to_skip, &width);
428 if (ret < 0)
429 return ret;
430 } else {
431 bytes_to_skip = 0;
432 width = rbe->len;
433 }
434 wattron(bot.win, COLOR_PAIR(rbe->color));
435 waddstr(bot.win, rbe->msg + bytes_to_skip);
436 *lines = NUM_LINES(width);
437 return fvr;
438 }
439
440 static void redraw_bot_win(void)
441 {
442 unsigned lines;
443 int i;
444
445 wmove(bot.win, 0, 0);
446 wclear(bot.win);
447 i = draw_top_rbe(&lines);
448 if (i <= 0)
449 goto out;
450 while (i > 0 && lines < bot.lines) {
451 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, --i);
452 if (!rbe) {
453 lines++;
454 waddstr(bot.win, "\n");
455 continue;
456 }
457 lines += NUM_LINES(rbe->len);
458 wattron(bot.win, COLOR_PAIR(rbe->color));
459 waddstr(bot.win, "\n");
460 waddstr(bot.win, rbe->msg);
461 }
462 out:
463 wrefresh(bot.win);
464 }
465
466 static void rb_add_entry(int color, char *msg)
467 {
468 struct rb_entry *old, *new;
469 int x, y;
470 size_t len;
471
472 if (strwidth(msg, &len) < 0)
473 return;
474 new = para_malloc(sizeof(struct rb_entry));
475 new->color = color;
476 new->len = len;
477 new->msg = msg;
478 old = ringbuffer_add(bot_win_rb, new);
479 // fprintf(stderr, "added: %s\n", new->msg);
480 if (old) {
481 free(old->msg);
482 free(old);
483 }
484 if (scroll_position) {
485 /* discard current scrolling, like xterm does */
486 scroll_position = 0;
487 redraw_bot_win();
488 return;
489 }
490 wattron(bot.win, COLOR_PAIR(color));
491 getyx(bot.win, y, x);
492 if (y || x)
493 waddstr(bot.win, "\n");
494 waddstr(bot.win, msg);
495 }
496
497 /*
498 * print formated output to bot win and refresh
499 */
500 __printf_2_3 static void outputf(int color, const char* fmt,...)
501 {
502 char *msg;
503 va_list ap;
504
505 if (!curses_active)
506 return;
507 va_start(ap, fmt);
508 xvasprintf(&msg, fmt, ap);
509 va_end(ap);
510 rb_add_entry(color, msg);
511 wrefresh(bot.win);
512 }
513
514 static int add_output_line(char *line, void *data)
515 {
516 int color = *(int *)data? COLOR_ERRMSG : COLOR_OUTPUT;
517
518 if (!curses_active)
519 return 1;
520 rb_add_entry(color, para_strdup(line));
521 return 1;
522 }
523
524 static int loglevel;
525
526 static __printf_2_3 void curses_log(int ll, const char *fmt,...)
527 {
528 int color;
529 char *msg;
530 va_list ap;
531
532 if (ll < loglevel || !curses_active)
533 return;
534 switch (ll) {
535 case LL_DEBUG:
536 case LL_INFO:
537 case LL_NOTICE:
538 color = COLOR_MSG;
539 break;
540 default:
541 color = COLOR_ERRMSG;
542 }
543 va_start(ap, fmt);
544 xvasprintf(&msg, fmt, ap);
545 va_end(ap);
546 chop(msg);
547 rb_add_entry(color, msg);
548 wrefresh(bot.win);
549 }
550 __printf_2_3 void (*para_log)(int, const char*, ...) = curses_log;
551
552 static void setup_signal_handling(void)
553 {
554 signal_pipe = para_signal_init();
555 para_install_sighandler(SIGINT);
556 para_install_sighandler(SIGTERM);
557 para_install_sighandler(SIGCHLD);
558 para_install_sighandler(SIGWINCH);
559 para_install_sighandler(SIGUSR1);
560 }
561
562 /* kill every process in the process group and exit */
563 __noreturn static void kill_pg_and_die(int ret)
564 {
565 para_sigaction(SIGTERM, SIG_IGN);
566 kill(0, SIGTERM);
567 exit(ret);
568 }
569
570 static void shutdown_curses(void)
571 {
572 if (!curses_active)
573 return;
574 def_prog_mode();
575 curses_active = false;
576 endwin();
577 }
578
579 __noreturn static void finish(int ret)
580 {
581 shutdown_curses();
582 kill_pg_and_die(ret);
583 }
584
585 /*
586 * exit curses and print given message to stdout/stderr
587 */
588 __noreturn __printf_2_3 static void msg_n_exit(int ret, const char* fmt, ...)
589 {
590 va_list argp;
591 FILE *outfd = ret? stderr: stdout;
592
593 shutdown_curses();
594 va_start(argp, fmt);
595 vfprintf(outfd, fmt, argp);
596 va_end(argp);
597 kill_pg_and_die(ret);
598 }
599
600 static void print_welcome(void)
601 {
602 if (loglevel > LL_NOTICE)
603 return;
604 outputf(COLOR_WELCOME, "Welcome to %s. Theme: %s",
605 version_single_line("gui"), theme.name);
606 wclrtoeol(bot.win);
607 }
608
609 /*
610 * init all windows
611 */
612 static void init_wins(int top_lines)
613 {
614 int i;
615
616 top.lines = top_lines;
617 top.cols = COLS;
618 top.begy = 0;
619 top.begx = 0;
620
621 bot.lines = LINES - top.lines - 3;
622 bot.cols = COLS;
623 bot.begy = top.lines + 1;
624 bot.begx = 0;
625
626 sb.lines = 1;
627 sb.cols = COLS;
628 sb.begy = LINES - 2;
629 sb.begx = 0;
630
631 in.lines = 1;
632 in.cols = COLS;
633 in.begy = LINES - 1;
634 in.begx = 0;
635
636 sep.lines = 1;
637 sep.cols = COLS;
638 sep.begy = top.lines;
639 sep.begx = 0;
640
641 assume_default_colors(theme.default_fg, theme.default_bg);
642 if (top.win) {
643 mvwin(top.win, top.begy, top.begx);
644 wresize(top.win, top.lines, top.cols);
645
646 mvwin(sb.win, sb.begy, sb.begx);
647 wresize(sb.win, sb.lines, sb.cols);
648
649 mvwin(sep.win, sep.begy, sep.begx);
650 wresize(sep.win, sep.lines, sep.cols);
651
652 mvwin(bot.win, bot.begy, bot.begx);
653 wresize(bot.win, bot.lines, bot.cols);
654
655 mvwin(in.win, in.begy, in.begx);
656 wresize(in.win, in.lines, in.cols);
657 } else {
658 sep.win = newwin(sep.lines, sep.cols, sep.begy, sep.begx);
659 top.win = newwin(top.lines, top.cols, top.begy, top.begx);
660 bot.win = newwin(bot.lines, bot.cols, bot.begy, bot.begx);
661 sb.win = newwin(sb.lines, sb.cols, sb.begy, sb.begx);
662 in.win = newwin(in.lines, in.cols, in.begy, in.begx);
663 if (!top.win || !bot.win || !sb.win || !in.win || !sep.win)
664 msg_n_exit(1, "Error: Cannot create curses windows\n");
665 wclear(bot.win);
666 wclear(sb.win);
667 wclear(in.win);
668 scrollok(bot.win, 1);
669 wattron(sb.win, COLOR_PAIR(COLOR_STATUSBAR));
670 wattron(sep.win, COLOR_PAIR(COLOR_SEPARATOR));
671 wattron(bot.win, COLOR_PAIR(COLOR_BOT));
672 wattron(top.win, COLOR_PAIR(COLOR_TOP));
673 nodelay(top.win, 1);
674 nodelay(bot.win, 1);
675 nodelay(sb.win, 1);
676 nodelay(in.win, 0);
677
678 keypad(top.win, 1);
679 keypad(bot.win, 1);
680 keypad(sb.win, 1);
681 keypad(in.win, 1);
682 print_status_bar();
683 }
684 wmove(sep.win, 0, 0);
685 for (i = 1; i <= COLS; i++)
686 waddstr(sep.win, theme.sep_str);
687 wclear(top.win);
688 //wclear(bot.win);
689 wnoutrefresh(top.win);
690 wnoutrefresh(bot.win);
691 //wnoutrefresh(sb.win);
692 print_status_bar();
693 wnoutrefresh(in.win);
694 wnoutrefresh(sep.win);
695 doupdate();
696 }
697
698 /*
699 * Print stat item #i to curses window
700 */
701 static void print_stat_item(int i)
702 {
703 char *tmp;
704 struct stat_item_data d = theme.data[i];
705 char *c = stat_content[i];
706
707 if (!curses_active || !d.len || !c)
708 return;
709 tmp = make_message("%s%s%s", d.prefix, c, d.postfix);
710 wmove(top.win, d.y * top.lines / 100, d.x * COLS / 100);
711 wrefresh(top.win);
712 wattron(top.win, COLOR_PAIR(i + 1));
713 align_str(top.win, tmp, d.len * COLS / 100, d.align);
714 free(tmp);
715 wrefresh(top.win);
716 }
717
718 static int update_item(int item_num, char *buf)
719 {
720 char **c = stat_content + item_num;
721
722 free(*c);
723 if (buf && buf[0])
724 goto dup;
725 switch (item_num) {
726 case SI_ARTIST:
727 *c = para_strdup("(artist tag not set)");
728 goto print;
729 case SI_TITLE:
730 *c = para_strdup("(title tag not set)");
731 goto print;
732 case SI_YEAR:
733 *c = para_strdup("????");
734 goto print;
735 case SI_ALBUM:
736 *c = para_strdup("(album tag not set)");
737 goto print;
738 case SI_COMMENT:
739 *c = para_strdup("(comment tag not set)");
740 goto print;
741 }
742 dup:
743 *c = para_strdup(buf);
744 print:
745 print_stat_item(item_num);
746 return 1;
747 }
748
749 static int read_stat_pipe(fd_set *rfds)
750 {
751 static char *buf;
752 static int bufsize, loaded;
753 int ret, ret2;
754 size_t sz;
755
756 if (stat_pipe < 0)
757 return 0;
758 if (loaded >= bufsize) {
759 if (bufsize > 1000 * 1000) {
760 loaded = 0;
761 return 0;
762 }
763 bufsize += bufsize + 1000;
764 buf = para_realloc(buf, bufsize);
765 }
766 assert(loaded < bufsize);
767 ret = read_nonblock(stat_pipe, buf + loaded, bufsize - loaded,
768 rfds, &sz);
769 loaded += sz;
770 ret2 = for_each_stat_item(buf, loaded, update_item);
771 if (ret < 0 || ret2 < 0) {
772 loaded = 0;
773 return ret2 < 0? ret2 : ret;
774 }
775 sz = ret2; /* what is left */
776 if (sz > 0 && sz < loaded)
777 memmove(buf, buf + loaded - sz, sz);
778 loaded = sz;
779 return 1;
780 }
781
782 static void print_all_items(void)
783 {
784 int i;
785
786 if (!curses_active)
787 return;
788 FOR_EACH_STATUS_ITEM(i)
789 print_stat_item(i);
790 }
791
792 static void clear_all_items(void)
793 {
794 int i;
795
796 FOR_EACH_STATUS_ITEM(i) {
797 free(stat_content[i]);
798 stat_content[i] = para_strdup("");
799 }
800 }
801
802 static void init_pair_or_die(short pair, short f, short b)
803 {
804 if (init_pair(pair, f, b) == ERR)
805 msg_n_exit(EXIT_FAILURE, "fatal: init_pair() failed\n");
806 }
807
808 static void init_colors_or_die(void)
809 {
810 int i;
811
812 if (!has_colors())
813 msg_n_exit(EXIT_FAILURE, "fatal: No color term\n");
814 if (start_color() == ERR)
815 msg_n_exit(EXIT_FAILURE, "fatal: failed to start colors\n");
816 FOR_EACH_STATUS_ITEM(i)
817 if (theme.data[i].len)
818 init_pair_or_die(i + 1, theme.data[i].fg,
819 theme.data[i].bg);
820 init_pair_or_die(COLOR_STATUSBAR, theme.sb_fg, theme.sb_bg);
821 init_pair_or_die(COLOR_COMMAND, theme.cmd_fg, theme.cmd_bg);
822 init_pair_or_die(COLOR_OUTPUT, theme.output_fg, theme.output_bg);
823 init_pair_or_die(COLOR_MSG, theme.msg_fg, theme.msg_bg);
824 init_pair_or_die(COLOR_ERRMSG, theme.err_msg_fg, theme.err_msg_bg);
825 init_pair_or_die(COLOR_WELCOME, theme.welcome_fg, theme.welcome_bg);
826 init_pair_or_die(COLOR_SEPARATOR, theme.sep_fg, theme.sep_bg);
827 init_pair_or_die(COLOR_TOP, theme.default_fg, theme.default_bg);
828 init_pair_or_die(COLOR_BOT, theme.default_fg, theme.default_bg);
829 }
830
831 /* (Re-)initialize the curses library. */
832 static void init_curses(void)
833 {
834 curses_active = true;
835 if (top.win && refresh() == ERR) /* refresh is really needed */
836 msg_n_exit(EXIT_FAILURE, "refresh() failed\n");
837 if (LINES < theme.lines_min || COLS < theme.cols_min)
838 msg_n_exit(EXIT_FAILURE, "Error: Terminal (%dx%d) too small"
839 " (need at least %dx%d)\n", COLS, LINES,
840 theme.cols_min, theme.lines_min);
841 curs_set(0); /* make cursor invisible, ignore errors */
842 nonl(); /* do not NL->CR/NL on output, always returns OK */
843 /* don't echo input */
844 if (noecho() == ERR)
845 msg_n_exit(EXIT_FAILURE, "fatal: noecho() failed\n");
846 /* take input chars one at a time, no wait for \n */
847 if (cbreak() == ERR)
848 msg_n_exit(EXIT_FAILURE, "fatal: cbreak() failed\n");
849 init_colors_or_die();
850 clear(); /* ignore non-fatal errors */
851 init_wins(theme.top_lines_default);
852 print_all_items();
853 // noecho(); /* don't echo input */
854 }
855
856 static void check_sigchld(void)
857 {
858 int ret;
859 pid_t pid;
860
861 reap_next_child:
862 ret = para_reap_child(&pid);
863 if (ret <= 0)
864 return;
865 if (pid == cmd_pid)
866 cmd_pid = 0;
867 goto reap_next_child;
868 }
869
870 /*
871 * This sucker modifies its first argument. *handler and *arg are
872 * pointers to 0-terminated strings (inside line). Crap.
873 */
874 static int split_key_map(char *line, char **handler, char **arg)
875 {
876 if (!(*handler = strchr(line + 1, ':')))
877 goto err_out;
878 **handler = '\0';
879 (*handler)++;
880 if (!(*arg = strchr(*handler, ':')))
881 goto err_out;
882 **arg = '\0';
883 (*arg)++;
884 return 1;
885 err_out:
886 return 0;
887 }
888
889 static int check_key_map_args(void)
890 {
891 char *s;
892 int i, ret = -1;
893 char *tmp = NULL, *handler, *arg;
894
895 for (i = 0; i < conf.key_map_given; ++i) {
896 s = conf.key_map_arg[i];
897 if (!(*s))
898 goto out;
899 free(tmp);
900 tmp = para_strdup(s);
901 if (!split_key_map(tmp, &handler, &arg))
902 goto out;
903 if (strlen(handler) != 1)
904 goto out;
905 if (*handler != 'x'
906 && *handler != 'd'
907 && *handler != 'i'
908 && *handler != 'p')
909 goto out;
910 if (*handler != 'i')
911 continue;
912 if (find_cmd_byname(arg) < 0)
913 goto out;
914 }
915 ret = 0;
916 out:
917 free(tmp);
918 return ret;
919 }
920
921 /*
922 * React to various signal-related events
923 */
924 static void handle_signal(int sig)
925 {
926 switch (sig) {
927 case SIGTERM:
928 msg_n_exit(EXIT_FAILURE,
929 "only the good die young (caught SIGTERM))\n");
930 return;
931 case SIGWINCH:
932 if (curses_active) {
933 shutdown_curses();
934 init_curses();
935 redraw_bot_win();
936 }
937 return;
938 case SIGINT:
939 PARA_WARNING_LOG("caught SIGINT, reset\n");
940 /* Nothing to do. SIGINT killed our child which gets noticed
941 * by do_select and resets everything.
942 */
943 return;
944 case SIGUSR1:
945 PARA_NOTICE_LOG("got SIGUSR1, rereading configuration\n");
946 com_reread_conf();
947 return;
948 case SIGCHLD:
949 check_sigchld();
950 return;
951 }
952 }
953
954 static void status_pre_select(fd_set *rfds, int *max_fileno, struct timeval *tv)
955 {
956 static struct timeval next_exec, atm, diff;
957 int ret, fds[3] = {0, 1, 0};
958 pid_t pid;
959
960 if (stat_pipe >= 0)
961 goto success;
962 /* Avoid busy loop */
963 gettimeofday(&atm, NULL);
964 if (tv_diff(&next_exec, &atm, &diff) > 0) {
965 if (tv_diff(&diff, tv, NULL) < 0)
966 *tv = diff;
967 return;
968 }
969 next_exec.tv_sec = atm.tv_sec + 2;
970 ret = para_exec_cmdline_pid(&pid, conf.stat_cmd_arg, fds);
971 if (ret < 0)
972 return;
973 ret = mark_fd_nonblocking(fds[1]);
974 if (ret < 0) {
975 close(fds[1]);
976 return;
977 }
978 stat_pipe = fds[1];
979 success:
980 para_fd_set(stat_pipe, rfds, max_fileno);
981 }
982
983 #define COMMAND_BUF_SIZE 32768
984
985 /*
986 * This is the core select loop. Besides the (internal) signal
987 * pipe, the following other fds are checked according to the mode:
988 *
989 * GETCH_MODE: check stdin, return when key is pressed
990 *
991 * COMMAND_MODE: check command fds and stdin. Return when peer has closed both
992 * stdout and stderr or when any key is pressed.
993 *
994 * EXTERNAL_MODE: Check only signal pipe. Used when an external command
995 * is running. During that time curses is disabled. Returns when
996 * cmd_pid == 0.
997 */
998 static int do_select(int mode)
999 {
1000 fd_set rfds;
1001 int ret, i, max_fileno;
1002 char command_buf[2][COMMAND_BUF_SIZE] = {"", ""};
1003 int cbo[2] = {0, 0}; /* command buf offsets */
1004 struct timeval tv;
1005 unsigned flags[2] = {0, 0}; /* for for_each_line() */
1006
1007 repeat:
1008 tv.tv_sec = conf.timeout_arg / 1000;
1009 tv.tv_usec = (conf.timeout_arg % 1000) * 1000;
1010 // ret = refresh_status();
1011 FD_ZERO(&rfds);
1012 max_fileno = 0;
1013 status_pre_select(&rfds, &max_fileno, &tv);
1014 /* signal pipe */
1015 para_fd_set(signal_pipe, &rfds, &max_fileno);
1016 /* command pipe only for COMMAND_MODE */
1017 if (mode == COMMAND_MODE) {
1018 if (command_fds[0] >= 0)
1019 para_fd_set(command_fds[0], &rfds, &max_fileno);
1020 if (command_fds[1] >= 0)
1021 para_fd_set(command_fds[1], &rfds, &max_fileno);
1022 }
1023 if (mode == GETCH_MODE || mode == COMMAND_MODE)
1024 para_fd_set(STDIN_FILENO, &rfds, &max_fileno);
1025 ret = para_select(max_fileno + 1, &rfds, NULL, &tv);
1026 if (ret <= 0)
1027 goto check_return; /* skip fd checks */
1028 /* signals */
1029 ret = para_next_signal(&rfds);
1030 if (ret > 0)
1031 handle_signal(ret);
1032 /* read command pipe if ready */
1033 if (mode == COMMAND_MODE) {
1034 for (i = 0; i < 2; i++) {
1035 size_t sz;
1036 if (command_fds[i] < 0)
1037 continue;
1038 ret = read_nonblock(command_fds[i],
1039 command_buf[i] + cbo[i],
1040 COMMAND_BUF_SIZE - 1 - cbo[i], &rfds, &sz);
1041 cbo[i] += sz;
1042 sz = cbo[i];
1043 cbo[i] = for_each_line(flags[i], command_buf[i], cbo[i],
1044 add_output_line, &i);
1045 if (sz != cbo[i]) { /* at least one line found */
1046 wrefresh(bot.win);
1047 flags[i] = 0;
1048 }
1049 if (ret < 0) {
1050 PARA_NOTICE_LOG("closing command fd %d: %s\n",
1051 i, para_strerror(-ret));
1052 close(command_fds[i]);
1053 command_fds[i] = -1;
1054 flags[i] = 0;
1055 cbo[i] = 0;
1056 if (command_fds[!i] < 0) /* both fds closed */
1057 return 0;
1058 }
1059 if (cbo[i] == COMMAND_BUF_SIZE - 1) {
1060 PARA_NOTICE_LOG("discarding overlong line\n");
1061 cbo[i] = 0;
1062 flags[i] = FELF_DISCARD_FIRST;
1063 }
1064 }
1065 }
1066 ret = read_stat_pipe(&rfds);
1067 if (ret < 0) {
1068 PARA_NOTICE_LOG("closing stat pipe: %s\n", para_strerror(-ret));
1069 close(stat_pipe);
1070 stat_pipe = -1;
1071 clear_all_items();
1072 free(stat_content[SI_BASENAME]);
1073 stat_content[SI_BASENAME] =
1074 para_strdup("stat command terminated!?");
1075 print_all_items();
1076 }
1077 check_return:
1078 switch (mode) {
1079 case COMMAND_MODE:
1080 ret = wgetch(top.win);
1081 if (ret != ERR && ret != KEY_RESIZE) {
1082 if (cmd_pid)
1083 kill(cmd_pid, SIGTERM);
1084 return -1;
1085 }
1086 break;
1087 case GETCH_MODE:
1088 ret = wgetch(top.win);
1089 if (ret != ERR && ret != KEY_RESIZE)
1090 return ret;
1091 break;
1092 case EXTERNAL_MODE:
1093 if (cmd_pid == 0)
1094 return 0;
1095 }
1096 goto repeat;
1097 }
1098
1099 /*
1100 * read from command pipe and print data to bot window
1101 */
1102 static void send_output(void)
1103 {
1104 int ret;
1105
1106 ret = mark_fd_nonblocking(command_fds[0]);
1107 if (ret < 0)
1108 goto fail;
1109 ret = mark_fd_nonblocking(command_fds[1]);
1110 if (ret < 0)
1111 goto fail;
1112 if (do_select(COMMAND_MODE) >= 0)
1113 PARA_INFO_LOG("command complete\n");
1114 else
1115 PARA_NOTICE_LOG("command aborted\n");
1116 print_in_bar(COLOR_MSG, " ");
1117 return;
1118 fail:
1119 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
1120 close(command_fds[0]);
1121 close(command_fds[1]);
1122 }
1123
1124 static void para_cmd(char *cmd)
1125 {
1126 int ret, fds[3] = {0, 1, 1};
1127 char *c = make_message(BINDIR "/para_client -- %s", cmd);
1128
1129 outputf(COLOR_COMMAND, "%s", c);
1130 print_in_bar(COLOR_MSG, "executing client command, hit any key to abort\n");
1131 ret = para_exec_cmdline_pid(&cmd_pid, c, fds);
1132 free(c);
1133 if (ret < 0)
1134 return;
1135 command_fds[0] = fds[1];
1136 command_fds[1] = fds[2];
1137 send_output();
1138 }
1139
1140 /*
1141 * exec command and print output to bot win
1142 */
1143 static void display_cmd(char *cmd)
1144 {
1145 int fds[3] = {0, 1, 1};
1146
1147 print_in_bar(COLOR_MSG, "executing display command, hit any key to abort");
1148 outputf(COLOR_COMMAND, "%s", cmd);
1149 if (para_exec_cmdline_pid(&cmd_pid, cmd, fds) < 0)
1150 return;
1151 command_fds[0] = fds[1];
1152 command_fds[1] = fds[2];
1153 send_output();
1154 }
1155
1156 /*
1157 * shutdown curses and stat pipe before executing external commands
1158 */
1159 static void external_cmd(char *cmd)
1160 {
1161 int fds[3] = {-1, -1, -1};
1162
1163 if (cmd_pid)
1164 return;
1165 shutdown_curses();
1166 if (para_exec_cmdline_pid(&cmd_pid, cmd, fds) < 0)
1167 return;
1168 do_select(EXTERNAL_MODE);
1169 init_curses();
1170 }
1171
1172 static void print_scroll_msg(void)
1173 {
1174 unsigned lines_total, filled = ringbuffer_filled(bot_win_rb);
1175 int first_rbe = first_visible_rbe(&lines_total);
1176
1177 print_in_bar(COLOR_MSG, "scrolled view: %d-%d/%d\n", filled - first_rbe,
1178 filled - scroll_position, ringbuffer_filled(bot_win_rb));
1179 }
1180
1181 static void com_scroll_top(void)
1182 {
1183 int i = RINGBUFFER_SIZE - 1;
1184 unsigned lines = 0;
1185
1186 while (i > 0 && !ringbuffer_get(bot_win_rb, i))
1187 i--;
1188 /* i is oldest entry */
1189 for (; lines < bot.lines && i >= 0; i--) {
1190 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, i);
1191 if (!rbe)
1192 break;
1193 lines += NUM_LINES(rbe->len);
1194 }
1195 i++;
1196 if (lines > 0 && scroll_position != i) {
1197 scroll_position = i;
1198 redraw_bot_win();
1199 print_scroll_msg();
1200 return;
1201 }
1202 print_in_bar(COLOR_ERRMSG, "top of buffer is shown\n");
1203 }
1204
1205 static void com_cancel_scrolling(void)
1206 {
1207
1208 if (scroll_position == 0) {
1209 print_in_bar(COLOR_ERRMSG, "bottom of buffer is shown\n");
1210 return;
1211 }
1212 scroll_position = 0;
1213 redraw_bot_win();
1214 }
1215
1216 static void com_page_down(void)
1217 {
1218 unsigned lines = 0;
1219 int i = scroll_position;
1220
1221 while (lines < bot.lines && --i > 0) {
1222 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, i);
1223 if (!rbe)
1224 break;
1225 lines += NUM_LINES(rbe->len);
1226 }
1227 if (lines) {
1228 scroll_position = i;
1229 redraw_bot_win();
1230 print_scroll_msg();
1231 return;
1232 }
1233 print_in_bar(COLOR_ERRMSG, "bottom of buffer is shown\n");
1234 }
1235
1236 static void com_page_up(void)
1237 {
1238 unsigned lines;
1239 int fvr = first_visible_rbe(&lines);
1240
1241 if (fvr < 0 || fvr + 1 >= ringbuffer_filled(bot_win_rb)) {
1242 print_in_bar(COLOR_ERRMSG, "top of buffer is shown\n");
1243 return;
1244 }
1245 scroll_position = fvr + 1;
1246 for (; scroll_position > 0; scroll_position--) {
1247 first_visible_rbe(&lines);
1248 if (lines == bot.lines)
1249 break;
1250 }
1251 redraw_bot_win();
1252 print_scroll_msg();
1253 }
1254
1255 static void com_scroll_down(void)
1256 {
1257 struct rb_entry *rbe;
1258 int rbe_lines;
1259
1260 if (!scroll_position) {
1261 print_in_bar(COLOR_ERRMSG, "bottom of buffer is shown\n");
1262 return;
1263 }
1264 scroll_position--;
1265 rbe = ringbuffer_get(bot_win_rb, scroll_position);
1266 rbe_lines = NUM_LINES(rbe->len);
1267 wscrl(bot.win, rbe_lines);
1268 wmove(bot.win, bot.lines - rbe_lines, 0);
1269 wattron(bot.win, COLOR_PAIR(rbe->color));
1270 waddstr(bot.win, rbe->msg);
1271 wrefresh(bot.win);
1272 print_scroll_msg();
1273 }
1274
1275 static void com_scroll_up(void)
1276 {
1277 struct rb_entry *rbe = NULL;
1278 unsigned lines;
1279 int i, first_rbe, num_scroll;
1280
1281 /* the entry that is going to vanish */
1282 rbe = ringbuffer_get(bot_win_rb, scroll_position);
1283 if (!rbe)
1284 goto err_out;
1285 num_scroll = NUM_LINES(rbe->len);
1286 first_rbe = first_visible_rbe(&lines);
1287 if (first_rbe < 0 || (first_rbe == ringbuffer_filled(bot_win_rb) - 1))
1288 goto err_out;
1289 scroll_position++;
1290 wscrl(bot.win, -num_scroll);
1291 i = draw_top_rbe(&lines);
1292 if (i < 0)
1293 goto err_out;
1294 while (i > 0 && lines < num_scroll) {
1295 int rbe_lines;
1296 rbe = ringbuffer_get(bot_win_rb, --i);
1297 if (!rbe)
1298 break;
1299 rbe_lines = NUM_LINES(rbe->len);
1300 lines += rbe_lines;
1301 // fprintf(stderr, "msg: %s\n", rbe->msg);
1302 wattron(bot.win, COLOR_PAIR(rbe->color));
1303 waddstr(bot.win, "\n");
1304 waddstr(bot.win, rbe->msg);
1305 if (!i)
1306 break;
1307 i--;
1308 }
1309 wrefresh(bot.win);
1310 print_scroll_msg();
1311 return;
1312 err_out:
1313 print_in_bar(COLOR_ERRMSG, "top of buffer is shown\n");
1314 }
1315
1316 static void com_ll_decr(void)
1317 {
1318 if (loglevel <= LL_DEBUG) {
1319 print_in_bar(COLOR_ERRMSG,
1320 "loglevel already at maximal verbosity\n");
1321 return;
1322 }
1323 loglevel--;
1324 print_in_bar(COLOR_MSG, "loglevel set to %d\n", loglevel);
1325 }
1326
1327 static void com_ll_incr(void)
1328 {
1329 if (loglevel >= LL_EMERG) {
1330 print_in_bar(COLOR_ERRMSG,
1331 "loglevel already at minimal verbosity\n");
1332 return;
1333 }
1334 loglevel++;
1335 print_in_bar(COLOR_MSG, "loglevel set to %d\n", loglevel);
1336 }
1337
1338 /*
1339 * reread configuration, terminate on errors
1340 */
1341 static void com_reread_conf(void)
1342 {
1343 char *cf = configfile_exists();
1344 struct gui_cmdline_parser_params params = {
1345 .override = 1,
1346 .initialize = 1,
1347 .check_required = 0,
1348 .check_ambiguity = 0,
1349 .print_errors = 0,
1350 };
1351
1352 if (!cf) {
1353 PARA_WARNING_LOG("there is no configuration to read\n");
1354 return;
1355 }
1356 PARA_INFO_LOG("rereading command line options and config file\n");
1357 gui_cmdline_parser_ext(_argc, _argv, &conf, &params);
1358 /*
1359 * Despite .print_errors is set to 0, gengetopt will print to stderr
1360 * anyway, and exit on errors. So we have to shutdown curses first.
1361 */
1362 shutdown_curses();
1363 gui_cmdline_parser_config_file(cf, &conf, &params);
1364 init_curses();
1365 PARA_NOTICE_LOG("config file reloaded\n");
1366 if (check_key_map_args() < 0)
1367 finish(EXIT_FAILURE);
1368 }
1369
1370 static void com_help(void)
1371 {
1372 int i;
1373
1374 for (i = 0; i < conf.key_map_given; ++i) {
1375 char *handler, *arg, *tmp = para_strdup(conf.key_map_arg[i]);
1376 const char *handler_text = "???", *desc = NULL;
1377
1378 if (!split_key_map(tmp, &handler, &arg)) {
1379 free(tmp);
1380 return;
1381 }
1382 switch (*handler) {
1383 case 'i':
1384 handler_text = "internal";
1385 desc = command_list[find_cmd_byname(arg)].description;
1386 break;
1387 case 'x': handler_text = "external"; break;
1388 case 'd': handler_text = "display "; break;
1389 case 'p': handler_text = "para "; break;
1390 }
1391 outputf(COLOR_MSG, "%s\t%s\t%s%s\t%s", tmp, handler_text, arg,
1392 strlen(arg) < 8? "\t" : "",
1393 desc? desc : "");
1394 free(tmp);
1395 }
1396 for (i = 0; command_list[i].handler; i++) {
1397 struct gui_command gc = command_list[i];
1398
1399 outputf(COLOR_MSG, "%s\tinternal\t%s\t%s%s", gc.key, gc.name,
1400 strlen(gc.name) < 8? "\t" : "",
1401 gc.description);
1402 }
1403 print_in_bar(COLOR_MSG, "try \"para_gui -h\" or \"para_client help\" "
1404 "for more info");
1405 }
1406
1407 static void com_shrink_top_win(void)
1408 {
1409 if (top.lines <= theme.top_lines_min) {
1410 PARA_WARNING_LOG("can not decrease top window\n");
1411 return;
1412 }
1413 init_wins(top.lines - 1);
1414 wclear(top.win);
1415 print_all_items();
1416 print_in_bar(COLOR_MSG, "%s", "decreased top window");
1417 }
1418
1419 static void com_enlarge_top_win(void)
1420 {
1421 if (bot.lines < 3) {
1422 PARA_WARNING_LOG("can not increase top window\n");
1423 return;
1424 }
1425 init_wins(top.lines + 1);
1426 wclear(top.win);
1427 print_all_items();
1428 print_in_bar(COLOR_MSG, "increased top window");
1429 }
1430
1431 static void com_version(void)
1432 {
1433 print_in_bar(COLOR_MSG, "%s", version_single_line("gui"));
1434 }
1435
1436 __noreturn static void com_quit(void)
1437 {
1438 finish(0);
1439 }
1440
1441 static void com_refresh(void)
1442 {
1443 shutdown_curses();
1444 init_curses();
1445 }
1446
1447 static void change_theme(int next)
1448 {
1449 if (next)
1450 next_theme(&theme);
1451 else
1452 prev_theme(&theme);
1453 /* This seems to be needed twice, why? */
1454 com_refresh();
1455 com_refresh();
1456 PARA_NOTICE_LOG("new theme: %s\n", theme.name);
1457 }
1458
1459 static void com_next_theme(void)
1460 {
1461 change_theme(1);
1462 }
1463
1464 static void com_prev_theme(void)
1465 {
1466 change_theme(0);
1467 }
1468
1469
1470 static void handle_command(int c)
1471 {
1472 int i;
1473
1474 /* first check user-defined key bindings */
1475 for (i = 0; i < conf.key_map_given; ++i) {
1476 char *tmp, *handler, *arg;
1477
1478 tmp = para_strdup(conf.key_map_arg[i]);
1479 if (!split_key_map(tmp, &handler, &arg)) {
1480 free(tmp);
1481 return;
1482 }
1483 if (strcmp(tmp, km_keyname(c))) {
1484 free(tmp);
1485 continue;
1486 }
1487 if (*handler == 'd')
1488 display_cmd(arg);
1489 else if (*handler == 'x')
1490 external_cmd(arg);
1491 else if (*handler == 'p')
1492 para_cmd(arg);
1493 else if (*handler == 'i') {
1494 int num = find_cmd_byname(arg);
1495 if (num >= 0)
1496 command_list[num].handler();
1497 }
1498 free(tmp);
1499 return;
1500 }
1501 /* not found, check internal key bindings */
1502 for (i = 0; command_list[i].handler; i++) {
1503 if (!strcmp(km_keyname(c), command_list[i].key)) {
1504 command_list[i].handler();
1505 return;
1506 }
1507 }
1508 print_in_bar(COLOR_ERRMSG, "key '%s' is not bound, press ? for help",
1509 km_keyname(c));
1510 }
1511
1512 __noreturn static void print_help_and_die(void)
1513 {
1514 struct ggo_help h = DEFINE_GGO_HELP(gui);
1515 bool d = conf.detailed_help_given;
1516
1517 ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
1518 exit(0);
1519 }
1520
1521 int main(int argc, char *argv[])
1522 {
1523 int ret;
1524 char *cf;
1525
1526 _argc = argc;
1527 _argv = argv;
1528
1529 gui_cmdline_parser(argc, argv, &conf); /* exits on errors */
1530 loglevel = get_loglevel_by_name(conf.loglevel_arg);
1531 version_handle_flag("gui", conf.version_given);
1532 if (conf.help_given || conf.detailed_help_given)
1533 print_help_and_die();
1534 cf = configfile_exists();
1535 if (!cf && conf.config_file_given) {
1536 fprintf(stderr, "can not read config file %s\n",
1537 conf.config_file_arg);
1538 exit(EXIT_FAILURE);
1539 }
1540 if (cf) {
1541 struct gui_cmdline_parser_params params = {
1542 .override = 0,
1543 .initialize = 0,
1544 .check_required = 0,
1545 .check_ambiguity = 0,
1546 .print_errors = 1,
1547 };
1548 gui_cmdline_parser_config_file(cf, &conf, &params);
1549 loglevel = get_loglevel_by_name(conf.loglevel_arg);
1550 }
1551 if (check_key_map_args() < 0) {
1552 fprintf(stderr, "invalid key map\n");
1553 exit(EXIT_FAILURE);
1554 }
1555 init_theme_or_die(conf.theme_arg, &theme);
1556 setup_signal_handling();
1557 bot_win_rb = ringbuffer_new(RINGBUFFER_SIZE);
1558 setlocale(LC_CTYPE, "");
1559 initscr(); /* needed only once, always successful */
1560 init_curses();
1561 print_welcome();
1562 for (;;) {
1563 print_status_bar();
1564 ret = do_select(GETCH_MODE);
1565 if (!ret)
1566 continue;
1567 print_in_bar(COLOR_MSG, " ");
1568 handle_command(ret);
1569 }
1570 }