gui: Rename label of check_key_map_args()
[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 int 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 #define COLOR_STATUSBAR 52
67 #define COLOR_COMMAND 53
68 #define COLOR_OUTPUT 54
69 #define COLOR_MSG 55
70 #define COLOR_ERRMSG 56
71 #define COLOR_WELCOME 57
72 #define COLOR_SEPARATOR 58
73 #define COLOR_TOP 59
74 #define COLOR_BOT 60
75
76 struct gui_command {
77 const char *key;
78 const char *name;
79 const char *description;
80 void (*handler)(void);
81 };
82
83 static struct gui_theme theme;
84
85 static int _argc;
86 static char **_argv;
87
88 static void com_help(void);
89 static void com_reread_conf(void);
90 static void com_enlarge_top_win(void);
91 static void com_shrink_top_win(void);
92 static void com_version(void);
93 __noreturn static void com_quit(void);
94 static void com_refresh(void);
95 static void com_ll_incr(void);
96 static void com_ll_decr(void);
97 static void com_prev_theme(void);
98 static void com_next_theme(void);
99 static void com_scroll_up(void);
100 static void com_scroll_down(void);
101 static void com_page_up(void);
102 static void com_page_down(void);
103 static void com_cancel_scrolling(void);
104 static void com_scroll_top(void);
105
106 static struct gui_command command_list[] = {
107 {
108 .key = "?",
109 .name = "help",
110 .description = "print help",
111 .handler = com_help
112 }, {
113 .key = "+",
114 .name = "enlarge_win",
115 .description = "enlarge the top window",
116 .handler = com_enlarge_top_win
117 }, {
118 .key = "-",
119 .name = "shrink_win",
120 .description = "shrink the top window",
121 .handler = com_shrink_top_win
122 }, {
123 .key = "r",
124 .name = "reread_conf",
125 .description = "reread configuration file",
126 .handler = com_reread_conf
127 }, {
128 .key = "q",
129 .name = "quit",
130 .description = "exit para_gui",
131 .handler = com_quit
132 }, {
133 .key = "^L",
134 .name = "refresh",
135 .description = "redraw the screen",
136 .handler = com_refresh
137 }, {
138 .key = ".",
139 .name = "next_theme",
140 .description = "switch to next theme",
141 .handler = com_next_theme
142 }, {
143 .key = ",",
144 .name = "prev_theme",
145 .description = "switch to previous stream",
146 .handler = com_prev_theme
147 }, {
148 .key = ">",
149 .name = "ll_incr",
150 .description = "increase loglevel (decreases verbosity)",
151 .handler = com_ll_incr
152 }, {
153 .key = "<",
154 .name = "ll_decr",
155 .description = "decrease loglevel (increases verbosity)",
156 .handler = com_ll_decr
157 }, {
158 .key = "V",
159 .name = "version",
160 .description = "show the para_gui version",
161 .handler = com_version
162 }, {
163 .key = "<up>",
164 .name = "scroll_up",
165 .description = "scroll up one line",
166 .handler = com_scroll_up
167 }, {
168 .key = "<down>",
169 .name = "scroll_down",
170 .description = "scroll down one line",
171 .handler = com_scroll_down
172 }, {
173 .key = "<ppage>",
174 .name = "page_up",
175 .description = "scroll up one page",
176 .handler = com_page_up
177 }, {
178 .key = "<npage>",
179 .name = "page_down",
180 .description = "scroll down one page",
181 .handler = com_page_down
182 }, {
183 .key = "<home>",
184 .name = "scroll_top",
185 .description = "scroll to top of buffer",
186 .handler = com_scroll_top
187 }, {
188 .key = "<end>",
189 .name = "cancel_scroll",
190 .description = "deactivate scroll mode",
191 .handler = com_cancel_scrolling
192 }, {
193 .handler = NULL
194 }
195 };
196
197 static int find_cmd_byname(char *name)
198 {
199 int i;
200
201 for (i = 0; command_list[i].handler; i++)
202 if (!strcmp(command_list[i].name, name))
203 return i;
204 return -1;
205 }
206
207 /* taken from mutt */
208 static char *km_keyname(int c)
209 {
210 static char buf[10];
211
212 if (c == KEY_UP) {
213 sprintf(buf, "<up>");
214 return buf;
215 }
216 if (c == KEY_DOWN) {
217 sprintf(buf, "<down>");
218 return buf;
219 }
220 if (c == KEY_LEFT) {
221 sprintf(buf, "<left>");
222 return buf;
223 }
224 if (c == KEY_RIGHT) {
225 sprintf(buf, "<right>");
226 return buf;
227 }
228 if (c == KEY_NPAGE) {
229 sprintf(buf, "<npage>");
230 return buf;
231 }
232 if (c == KEY_PPAGE) {
233 sprintf(buf, "<ppage>");
234 return buf;
235 }
236 if (c == KEY_HOME) {
237 sprintf(buf, "<home>");
238 return buf;
239 }
240 if (c == KEY_END) {
241 sprintf(buf, "<end>");
242 return buf;
243 }
244 if (c < 256 && c > -128 && iscntrl((unsigned char) c)) {
245 if (c < 0)
246 c += 256;
247 if (c < 128) {
248 buf[0] = '^';
249 buf[1] = (c + '@') & 0x7f;
250 buf[2] = 0;
251 } else
252 snprintf(buf, sizeof(buf), "\\%d%d%d", c >> 6,
253 (c >> 3) & 7, c & 7);
254 } else if (c >= KEY_F0 && c < KEY_F(256))
255 sprintf(buf, "<F%d>", c - KEY_F0);
256 else if (isprint(c))
257 snprintf(buf, sizeof(buf), "%c", (unsigned char) c);
258 else
259 snprintf(buf, sizeof(buf), "\\x%hx", (unsigned short) c);
260 return buf;
261 }
262
263 static char *configfile_exists(void)
264 {
265 static char *config_file;
266 char *tmp;
267
268 if (!conf.config_file_given) {
269 if (!config_file) {
270 char *home = para_homedir();
271 config_file = make_message("%s/.paraslash/gui.conf",
272 home);
273 free(home);
274 }
275 tmp = config_file;
276 } else
277 tmp = conf.config_file_arg;
278 return file_exists(tmp)? tmp: NULL;
279 }
280
281 /* Print given number of spaces to curses window. */
282 static void add_spaces(WINDOW* win, unsigned int num)
283 {
284 char space[] = " ";
285 unsigned sz = sizeof(space) - 1; /* number of spaces */
286
287 while (num >= sz) {
288 waddstr(win, space);
289 num -= sz;
290 }
291 if (num > 0) {
292 assert(num < sz);
293 space[num] = '\0';
294 waddstr(win, space);
295 }
296 }
297
298 /*
299 * print aligned string to curses window. This function always prints
300 * exactly len chars.
301 */
302 static int align_str(WINDOW* win, char *str, unsigned int len,
303 unsigned int align)
304 {
305 int ret, i, num; /* of spaces */
306 size_t width;
307
308 if (!win || !str)
309 return 0;
310 ret = strwidth(str, &width);
311 if (ret < 0) {
312 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
313 width = 0;
314 str[0] = '\0';
315 }
316 num = len - width;
317 if (num < 0) {
318 str[len] = '\0';
319 num = 0;
320 }
321 /* replace control characters by spaces */
322 for (i = 0; i < len && str[i]; i++) {
323 if (str[i] == '\n' || str[i] == '\r' || str[i] == '\f')
324 str[i] = ' ';
325 }
326 if (align == LEFT) {
327 waddstr(win, str);
328 add_spaces(win, num);
329 } else if (align == RIGHT) {
330 add_spaces(win, num);
331 waddstr(win, str);
332 } else {
333 add_spaces(win, num / 2);
334 waddstr(win, str[0]? str: "");
335 add_spaces(win, num - num / 2);
336 }
337 return 1;
338 }
339
340 __printf_2_3 static void print_in_bar(int color, const char *fmt,...)
341 {
342 char *msg;
343 va_list ap;
344
345 if (!curses_active)
346 return;
347 wattron(in.win, COLOR_PAIR(color));
348 va_start(ap, fmt);
349 xvasprintf(&msg, fmt, ap);
350 va_end(ap);
351 wmove(in.win, 0, 0);
352 align_str(in.win, msg, in.cols, LEFT);
353 free(msg);
354 wrefresh(in.win);
355 }
356
357 /*
358 * update the status bar
359 */
360 static void print_status_bar(void)
361 {
362 char *tmp;
363
364 if (!curses_active)
365 return;
366 tmp = para_strdup(STANDARD_STATUS_BAR);
367 wmove(sb.win, 0, 0);
368 align_str(sb.win, tmp, sb.cols, CENTER);
369 free(tmp);
370 wrefresh(sb.win);
371 }
372
373 /*
374 * get the number of the oldest rbe that is (partially) visible. On return,
375 * lines contains the sum of the number of lines of all visible entries. If the
376 * first one is only partially visible, lines is greater than bot.lines.
377 */
378 static int first_visible_rbe(unsigned *lines)
379 {
380 int i;
381 *lines = 0;
382 for (i = scroll_position; i < RINGBUFFER_SIZE; i++) {
383 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, i);
384 int rbe_lines;
385 if (!rbe)
386 return i - 1;
387 // fprintf(stderr, "found: %s\n", rbe->msg);
388 rbe_lines = NUM_LINES(rbe->len);
389 if (rbe_lines > bot.lines)
390 return -1;
391 *lines += rbe_lines;
392 if (*lines >= bot.lines)
393 return i;
394 }
395 return RINGBUFFER_SIZE - 1;
396 }
397
398 /*
399 returns number of first visible rbe, *lines is the number of lines drawn.
400 */
401 static int draw_top_rbe(unsigned *lines)
402 {
403 int ret, fvr = first_visible_rbe(lines);
404 struct rb_entry *rbe;
405 size_t bytes_to_skip, cells_to_skip, width;
406
407 if (fvr < 0)
408 return -1;
409 wmove(bot.win, 0, 0);
410 rbe = ringbuffer_get(bot_win_rb, fvr);
411 if (!rbe)
412 return -1;
413 if (*lines > bot.lines) {
414 /* rbe is partially visible multi-line */
415 cells_to_skip = (*lines - bot.lines) * bot.cols;
416 ret = skip_cells(rbe->msg, cells_to_skip, &bytes_to_skip);
417 if (ret < 0)
418 return ret;
419 ret = strwidth(rbe->msg + bytes_to_skip, &width);
420 if (ret < 0)
421 return ret;
422 } else {
423 bytes_to_skip = 0;
424 width = rbe->len;
425 }
426 wattron(bot.win, COLOR_PAIR(rbe->color));
427 waddstr(bot.win, rbe->msg + bytes_to_skip);
428 *lines = NUM_LINES(width);
429 return fvr;
430 }
431
432 static void redraw_bot_win(void)
433 {
434 unsigned lines;
435 int i;
436
437 wmove(bot.win, 0, 0);
438 wclear(bot.win);
439 i = draw_top_rbe(&lines);
440 if (i <= 0)
441 goto out;
442 while (i > 0 && lines < bot.lines) {
443 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, --i);
444 if (!rbe) {
445 lines++;
446 waddstr(bot.win, "\n");
447 continue;
448 }
449 lines += NUM_LINES(rbe->len);
450 wattron(bot.win, COLOR_PAIR(rbe->color));
451 waddstr(bot.win, "\n");
452 waddstr(bot.win, rbe->msg);
453 }
454 out:
455 wrefresh(bot.win);
456 }
457
458 static void rb_add_entry(int color, char *msg)
459 {
460 struct rb_entry *old, *new;
461 int x, y;
462 size_t len;
463
464 if (strwidth(msg, &len) < 0)
465 return;
466 new = para_malloc(sizeof(struct rb_entry));
467 new->color = color;
468 new->len = len;
469 new->msg = msg;
470 old = ringbuffer_add(bot_win_rb, new);
471 // fprintf(stderr, "added: %s\n", new->msg);
472 if (old) {
473 free(old->msg);
474 free(old);
475 }
476 if (scroll_position) {
477 /* discard current scrolling, like xterm does */
478 scroll_position = 0;
479 redraw_bot_win();
480 return;
481 }
482 wattron(bot.win, COLOR_PAIR(color));
483 getyx(bot.win, y, x);
484 if (y || x)
485 waddstr(bot.win, "\n");
486 waddstr(bot.win, msg);
487 }
488
489 /*
490 * print formated output to bot win and refresh
491 */
492 __printf_2_3 static void outputf(int color, const char* fmt,...)
493 {
494 char *msg;
495 va_list ap;
496
497 if (!curses_active)
498 return;
499 va_start(ap, fmt);
500 xvasprintf(&msg, fmt, ap);
501 va_end(ap);
502 rb_add_entry(color, msg);
503 wrefresh(bot.win);
504 }
505
506 static int add_output_line(char *line, void *data)
507 {
508 int color = *(int *)data? COLOR_ERRMSG : COLOR_OUTPUT;
509
510 if (!curses_active)
511 return 1;
512 rb_add_entry(color, para_strdup(line));
513 return 1;
514 }
515
516 static int loglevel;
517
518 static __printf_2_3 void curses_log(int ll, const char *fmt,...)
519 {
520 int color;
521 char *msg;
522 va_list ap;
523
524 if (ll < loglevel || !curses_active)
525 return;
526 switch (ll) {
527 case LL_DEBUG:
528 case LL_INFO:
529 case LL_NOTICE:
530 color = COLOR_MSG;
531 break;
532 default:
533 color = COLOR_ERRMSG;
534 }
535 va_start(ap, fmt);
536 xvasprintf(&msg, fmt, ap);
537 va_end(ap);
538 chop(msg);
539 rb_add_entry(color, msg);
540 wrefresh(bot.win);
541 }
542 __printf_2_3 void (*para_log)(int, const char*, ...) = curses_log;
543
544 static void setup_signal_handling(void)
545 {
546 signal_pipe = para_signal_init();
547 para_install_sighandler(SIGINT);
548 para_install_sighandler(SIGTERM);
549 para_install_sighandler(SIGCHLD);
550 para_install_sighandler(SIGWINCH);
551 para_install_sighandler(SIGUSR1);
552 }
553
554 /* kill every process in the process group and exit */
555 __noreturn static void kill_pg_and_die(int ret)
556 {
557 para_sigaction(SIGTERM, SIG_IGN);
558 kill(0, SIGTERM);
559 exit(ret);
560 }
561
562 static void shutdown_curses(void)
563 {
564 if (!curses_active)
565 return;
566 def_prog_mode();
567 curses_active = 0;
568 endwin();
569 }
570
571 __noreturn static void finish(int ret)
572 {
573 shutdown_curses();
574 kill_pg_and_die(ret);
575 }
576
577 /*
578 * exit curses and print given message to stdout/stderr
579 */
580 __noreturn __printf_2_3 static void msg_n_exit(int ret, const char* fmt, ...)
581 {
582 va_list argp;
583 FILE *outfd = ret? stderr: stdout;
584
585 shutdown_curses();
586 va_start(argp, fmt);
587 vfprintf(outfd, fmt, argp);
588 va_end(argp);
589 kill_pg_and_die(ret);
590 }
591
592 static void print_welcome(void)
593 {
594 if (loglevel > LL_NOTICE)
595 return;
596 outputf(COLOR_WELCOME, "Welcome to %s. Theme: %s",
597 version_single_line("gui"), theme.name);
598 wclrtoeol(bot.win);
599 }
600
601 /*
602 * init all windows
603 */
604 static void init_wins(int top_lines)
605 {
606 int i;
607
608 top.lines = top_lines;
609 top.cols = COLS;
610 top.begy = 0;
611 top.begx = 0;
612
613 bot.lines = LINES - top.lines - 3;
614 bot.cols = COLS;
615 bot.begy = top.lines + 1;
616 bot.begx = 0;
617
618 sb.lines = 1;
619 sb.cols = COLS;
620 sb.begy = LINES - 2;
621 sb.begx = 0;
622
623 in.lines = 1;
624 in.cols = COLS;
625 in.begy = LINES - 1;
626 in.begx = 0;
627
628 sep.lines = 1;
629 sep.cols = COLS;
630 sep.begy = top.lines;
631 sep.begx = 0;
632
633 assume_default_colors(theme.default_fg, theme.default_bg);
634 if (top.win) {
635 mvwin(top.win, top.begy, top.begx);
636 wresize(top.win, top.lines, top.cols);
637
638 mvwin(sb.win, sb.begy, sb.begx);
639 wresize(sb.win, sb.lines, sb.cols);
640
641 mvwin(sep.win, sep.begy, sep.begx);
642 wresize(sep.win, sep.lines, sep.cols);
643
644 mvwin(bot.win, bot.begy, bot.begx);
645 wresize(bot.win, bot.lines, bot.cols);
646
647 mvwin(in.win, in.begy, in.begx);
648 wresize(in.win, in.lines, in.cols);
649 } else {
650 sep.win = newwin(sep.lines, sep.cols, sep.begy, sep.begx);
651 top.win = newwin(top.lines, top.cols, top.begy, top.begx);
652 bot.win = newwin(bot.lines, bot.cols, bot.begy, bot.begx);
653 sb.win = newwin(sb.lines, sb.cols, sb.begy, sb.begx);
654 in.win = newwin(in.lines, in.cols, in.begy, in.begx);
655 if (!top.win || !bot.win || !sb.win || !in.win || !sep.win)
656 msg_n_exit(1, "Error: Cannot create curses windows\n");
657 wclear(bot.win);
658 wclear(sb.win);
659 wclear(in.win);
660 scrollok(bot.win, 1);
661 wattron(sb.win, COLOR_PAIR(COLOR_STATUSBAR));
662 wattron(sep.win, COLOR_PAIR(COLOR_SEPARATOR));
663 wattron(bot.win, COLOR_PAIR(COLOR_BOT));
664 wattron(top.win, COLOR_PAIR(COLOR_TOP));
665 nodelay(top.win, 1);
666 nodelay(bot.win, 1);
667 nodelay(sb.win, 1);
668 nodelay(in.win, 0);
669
670 keypad(top.win, 1);
671 keypad(bot.win, 1);
672 keypad(sb.win, 1);
673 keypad(in.win, 1);
674 print_status_bar();
675 }
676 wmove(sep.win, 0, 0);
677 for (i = 1; i <= COLS; i++)
678 waddstr(sep.win, theme.sep_str);
679 wclear(top.win);
680 //wclear(bot.win);
681 wnoutrefresh(top.win);
682 wnoutrefresh(bot.win);
683 //wnoutrefresh(sb.win);
684 print_status_bar();
685 wnoutrefresh(in.win);
686 wnoutrefresh(sep.win);
687 doupdate();
688 }
689
690 /*
691 * Print stat item #i to curses window
692 */
693 static void print_stat_item(int i)
694 {
695 char *tmp;
696 struct stat_item_data d = theme.data[i];
697 char *c = stat_content[i];
698
699 if (!curses_active || !d.len || !c)
700 return;
701 tmp = make_message("%s%s%s", d.prefix, c, d.postfix);
702 wmove(top.win, d.y * top.lines / 100, d.x * COLS / 100);
703 wrefresh(top.win);
704 wattron(top.win, COLOR_PAIR(i + 1));
705 align_str(top.win, tmp, d.len * COLS / 100, d.align);
706 free(tmp);
707 wrefresh(top.win);
708 }
709
710 static int update_item(int item_num, char *buf)
711 {
712 char **c = stat_content + item_num;
713
714 free(*c);
715 if (buf && buf[0])
716 goto dup;
717 switch (item_num) {
718 case SI_ARTIST:
719 *c = para_strdup("(artist tag not set)");
720 goto print;
721 case SI_TITLE:
722 *c = para_strdup("(title tag not set)");
723 goto print;
724 case SI_YEAR:
725 *c = para_strdup("????");
726 goto print;
727 case SI_ALBUM:
728 *c = para_strdup("(album tag not set)");
729 goto print;
730 case SI_COMMENT:
731 *c = para_strdup("(comment tag not set)");
732 goto print;
733 }
734 dup:
735 *c = para_strdup(buf);
736 print:
737 print_stat_item(item_num);
738 return 1;
739 }
740
741 static int read_stat_pipe(fd_set *rfds)
742 {
743 static char *buf;
744 static int bufsize, loaded;
745 int ret, ret2;
746 size_t sz;
747
748 if (stat_pipe < 0)
749 return 0;
750 if (loaded >= bufsize) {
751 if (bufsize > 1000 * 1000) {
752 loaded = 0;
753 return 0;
754 }
755 bufsize += bufsize + 1000;
756 buf = para_realloc(buf, bufsize);
757 }
758 assert(loaded < bufsize);
759 ret = read_nonblock(stat_pipe, buf + loaded, bufsize - loaded,
760 rfds, &sz);
761 loaded += sz;
762 ret2 = for_each_stat_item(buf, loaded, update_item);
763 if (ret < 0 || ret2 < 0) {
764 loaded = 0;
765 return ret2 < 0? ret2 : ret;
766 }
767 sz = ret2; /* what is left */
768 if (sz > 0 && sz < loaded)
769 memmove(buf, buf + loaded - sz, sz);
770 loaded = sz;
771 return 1;
772 }
773
774 static void print_all_items(void)
775 {
776 int i;
777
778 if (!curses_active)
779 return;
780 FOR_EACH_STATUS_ITEM(i)
781 print_stat_item(i);
782 }
783
784 static void clear_all_items(void)
785 {
786 int i;
787
788 FOR_EACH_STATUS_ITEM(i) {
789 free(stat_content[i]);
790 stat_content[i] = para_strdup("");
791 }
792 }
793
794 static void init_pair_or_die(short pair, short f, short b)
795 {
796 if (init_pair(pair, f, b) == ERR)
797 msg_n_exit(EXIT_FAILURE, "fatal: init_pair() failed\n");
798 }
799
800 static void init_colors_or_die(void)
801 {
802 int i;
803
804 if (!has_colors())
805 msg_n_exit(EXIT_FAILURE, "fatal: No color term\n");
806 if (start_color() == ERR)
807 msg_n_exit(EXIT_FAILURE, "fatal: failed to start colors\n");
808 FOR_EACH_STATUS_ITEM(i)
809 if (theme.data[i].len)
810 init_pair_or_die(i + 1, theme.data[i].fg,
811 theme.data[i].bg);
812 init_pair_or_die(COLOR_STATUSBAR, theme.sb_fg, theme.sb_bg);
813 init_pair_or_die(COLOR_COMMAND, theme.cmd_fg, theme.cmd_bg);
814 init_pair_or_die(COLOR_OUTPUT, theme.output_fg, theme.output_bg);
815 init_pair_or_die(COLOR_MSG, theme.msg_fg, theme.msg_bg);
816 init_pair_or_die(COLOR_ERRMSG, theme.err_msg_fg, theme.err_msg_bg);
817 init_pair_or_die(COLOR_WELCOME, theme.welcome_fg, theme.welcome_bg);
818 init_pair_or_die(COLOR_SEPARATOR, theme.sep_fg, theme.sep_bg);
819 init_pair_or_die(COLOR_TOP, theme.default_fg, theme.default_bg);
820 init_pair_or_die(COLOR_BOT, theme.default_fg, theme.default_bg);
821 }
822
823 /* (Re-)initialize the curses library. */
824 static void init_curses(void)
825 {
826 curses_active = 1;
827 if (top.win && refresh() == ERR) /* refresh is really needed */
828 msg_n_exit(EXIT_FAILURE, "refresh() failed\n");
829 if (LINES < theme.lines_min || COLS < theme.cols_min)
830 msg_n_exit(EXIT_FAILURE, "Error: Terminal (%dx%d) too small"
831 " (need at least %dx%d)\n", COLS, LINES,
832 theme.cols_min, theme.lines_min);
833 curs_set(0); /* make cursor invisible, ignore errors */
834 nonl(); /* do not NL->CR/NL on output, always returns OK */
835 /* don't echo input */
836 if (noecho() == ERR)
837 msg_n_exit(EXIT_FAILURE, "fatal: noecho() failed\n");
838 /* take input chars one at a time, no wait for \n */
839 if (cbreak() == ERR)
840 msg_n_exit(EXIT_FAILURE, "fatal: cbreak() failed\n");
841 init_colors_or_die();
842 clear(); /* ignore non-fatal errors */
843 init_wins(theme.top_lines_default);
844 print_all_items();
845 // noecho(); /* don't echo input */
846 }
847
848 static void check_sigchld(void)
849 {
850 int ret;
851 pid_t pid;
852
853 reap_next_child:
854 ret = para_reap_child(&pid);
855 if (ret <= 0)
856 return;
857 if (pid == cmd_pid)
858 cmd_pid = 0;
859 goto reap_next_child;
860 }
861
862 /*
863 * This sucker modifies its first argument. *handler and *arg are
864 * pointers to 0-terminated strings (inside line). Crap.
865 */
866 static int split_key_map(char *line, char **handler, char **arg)
867 {
868 if (!(*handler = strchr(line + 1, ':')))
869 goto err_out;
870 **handler = '\0';
871 (*handler)++;
872 if (!(*arg = strchr(*handler, ':')))
873 goto err_out;
874 **arg = '\0';
875 (*arg)++;
876 return 1;
877 err_out:
878 return 0;
879 }
880
881 static int check_key_map_args(void)
882 {
883 char *s;
884 int i, ret = -1;
885 char *tmp = NULL, *handler, *arg;
886
887 for (i = 0; i < conf.key_map_given; ++i) {
888 s = conf.key_map_arg[i];
889 if (!(*s))
890 goto out;
891 free(tmp);
892 tmp = para_strdup(s);
893 if (!split_key_map(tmp, &handler, &arg))
894 goto out;
895 if (strlen(handler) != 1)
896 goto out;
897 if (*handler != 'x'
898 && *handler != 'd'
899 && *handler != 'i'
900 && *handler != 'p')
901 goto out;
902 if (*handler != 'i')
903 continue;
904 if (find_cmd_byname(arg) < 0)
905 goto out;
906 }
907 ret = 0;
908 out:
909 free(tmp);
910 return ret;
911 }
912
913 /*
914 * React to various signal-related events
915 */
916 static void handle_signal(int sig)
917 {
918 switch (sig) {
919 case SIGTERM:
920 msg_n_exit(EXIT_FAILURE,
921 "only the good die young (caught SIGTERM))\n");
922 return;
923 case SIGWINCH:
924 if (curses_active) {
925 shutdown_curses();
926 init_curses();
927 redraw_bot_win();
928 }
929 return;
930 case SIGINT:
931 PARA_WARNING_LOG("caught SIGINT, reset\n");
932 /* Nothing to do. SIGINT killed our child which gets noticed
933 * by do_select and resets everything.
934 */
935 return;
936 case SIGUSR1:
937 PARA_NOTICE_LOG("got SIGUSR1, rereading configuration\n");
938 com_reread_conf();
939 return;
940 case SIGCHLD:
941 check_sigchld();
942 return;
943 }
944 }
945
946 static void status_pre_select(fd_set *rfds, int *max_fileno, struct timeval *tv)
947 {
948 static struct timeval next_exec, atm, diff;
949 int ret, fds[3] = {0, 1, 0};
950 pid_t pid;
951
952 if (stat_pipe >= 0)
953 goto success;
954 /* Avoid busy loop */
955 gettimeofday(&atm, NULL);
956 if (tv_diff(&next_exec, &atm, &diff) > 0) {
957 if (tv_diff(&diff, tv, NULL) < 0)
958 *tv = diff;
959 return;
960 }
961 next_exec.tv_sec = atm.tv_sec + 2;
962 ret = para_exec_cmdline_pid(&pid, conf.stat_cmd_arg, fds);
963 if (ret < 0)
964 return;
965 ret = mark_fd_nonblocking(fds[1]);
966 if (ret < 0) {
967 close(fds[1]);
968 return;
969 }
970 stat_pipe = fds[1];
971 success:
972 para_fd_set(stat_pipe, rfds, max_fileno);
973 }
974
975 #define COMMAND_BUF_SIZE 32768
976
977 /*
978 * This is the core select loop. Besides the (internal) signal
979 * pipe, the following other fds are checked according to the mode:
980 *
981 * GETCH_MODE: check stdin, return when key is pressed
982 *
983 * COMMAND_MODE: check command fds and stdin. Return when peer has closed both
984 * stdout and stderr or when any key is pressed.
985 *
986 * EXTERNAL_MODE: Check only signal pipe. Used when an external command
987 * is running. During that time curses is disabled. Returns when
988 * cmd_pid == 0.
989 */
990 static int do_select(int mode)
991 {
992 fd_set rfds;
993 int ret, i, max_fileno;
994 char command_buf[2][COMMAND_BUF_SIZE] = {"", ""};
995 int cbo[2] = {0, 0}; /* command buf offsets */
996 struct timeval tv;
997 unsigned flags[2] = {0, 0}; /* for for_each_line() */
998
999 repeat:
1000 tv.tv_sec = conf.timeout_arg / 1000;
1001 tv.tv_usec = (conf.timeout_arg % 1000) * 1000;
1002 // ret = refresh_status();
1003 FD_ZERO(&rfds);
1004 max_fileno = 0;
1005 status_pre_select(&rfds, &max_fileno, &tv);
1006 /* signal pipe */
1007 para_fd_set(signal_pipe, &rfds, &max_fileno);
1008 /* command pipe only for COMMAND_MODE */
1009 if (mode == COMMAND_MODE) {
1010 if (command_fds[0] >= 0)
1011 para_fd_set(command_fds[0], &rfds, &max_fileno);
1012 if (command_fds[1] >= 0)
1013 para_fd_set(command_fds[1], &rfds, &max_fileno);
1014 }
1015 if (mode == GETCH_MODE || mode == COMMAND_MODE)
1016 para_fd_set(STDIN_FILENO, &rfds, &max_fileno);
1017 ret = para_select(max_fileno + 1, &rfds, NULL, &tv);
1018 if (ret <= 0)
1019 goto check_return; /* skip fd checks */
1020 /* signals */
1021 ret = para_next_signal(&rfds);
1022 if (ret > 0)
1023 handle_signal(ret);
1024 /* read command pipe if ready */
1025 if (mode == COMMAND_MODE) {
1026 for (i = 0; i < 2; i++) {
1027 size_t sz;
1028 if (command_fds[i] < 0)
1029 continue;
1030 ret = read_nonblock(command_fds[i],
1031 command_buf[i] + cbo[i],
1032 COMMAND_BUF_SIZE - 1 - cbo[i], &rfds, &sz);
1033 cbo[i] += sz;
1034 sz = cbo[i];
1035 cbo[i] = for_each_line(flags[i], command_buf[i], cbo[i],
1036 add_output_line, &i);
1037 if (sz != cbo[i]) { /* at least one line found */
1038 wrefresh(bot.win);
1039 flags[i] = 0;
1040 }
1041 if (ret < 0) {
1042 PARA_NOTICE_LOG("closing command fd %d: %s\n",
1043 i, para_strerror(-ret));
1044 close(command_fds[i]);
1045 command_fds[i] = -1;
1046 flags[i] = 0;
1047 cbo[i] = 0;
1048 if (command_fds[!i] < 0) /* both fds closed */
1049 return 0;
1050 }
1051 if (cbo[i] == COMMAND_BUF_SIZE - 1) {
1052 PARA_NOTICE_LOG("discarding overlong line\n");
1053 cbo[i] = 0;
1054 flags[i] = FELF_DISCARD_FIRST;
1055 }
1056 }
1057 }
1058 ret = read_stat_pipe(&rfds);
1059 if (ret < 0) {
1060 PARA_NOTICE_LOG("closing stat pipe: %s\n", para_strerror(-ret));
1061 close(stat_pipe);
1062 stat_pipe = -1;
1063 clear_all_items();
1064 free(stat_content[SI_BASENAME]);
1065 stat_content[SI_BASENAME] =
1066 para_strdup("stat command terminated!?");
1067 print_all_items();
1068 }
1069 check_return:
1070 switch (mode) {
1071 case COMMAND_MODE:
1072 ret = wgetch(top.win);
1073 if (ret != ERR && ret != KEY_RESIZE) {
1074 if (command_fds[0] >= 0) {
1075 close(command_fds[0]);
1076 command_fds[0] = -1;
1077 }
1078 if (command_fds[1] >= 0) {
1079 close(command_fds[1]);
1080 command_fds[1] = -1;
1081 }
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 top.lines = theme.top_lines_default;
1557 setup_signal_handling();
1558 bot_win_rb = ringbuffer_new(RINGBUFFER_SIZE);
1559 setlocale(LC_CTYPE, "");
1560 initscr(); /* needed only once, always successful */
1561 init_curses();
1562 print_welcome();
1563 for (;;) {
1564 print_status_bar();
1565 ret = do_select(GETCH_MODE);
1566 if (!ret)
1567 continue;
1568 print_in_bar(COLOR_MSG, " ");
1569 handle_command(ret);
1570 }
1571 }