gui: Remove unused struct stat_item.
[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 win_data {
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 visable 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 if (!curses_active)
510 return 1;
511 rb_add_entry(color, para_strdup(line));
512 return 1;
513 }
514
515 static int loglevel;
516
517 static __printf_2_3 void curses_log(int ll, const char *fmt,...)
518 {
519 int color;
520 char *msg;
521 va_list ap;
522
523 if (ll < loglevel || !curses_active)
524 return;
525 switch (ll) {
526 case LL_DEBUG:
527 case LL_INFO:
528 case LL_NOTICE:
529 color = COLOR_MSG;
530 break;
531 default:
532 color = COLOR_ERRMSG;
533 }
534 va_start(ap, fmt);
535 xvasprintf(&msg, fmt, ap);
536 va_end(ap);
537 chop(msg);
538 rb_add_entry(color, msg);
539 wrefresh(bot.win);
540 }
541 __printf_2_3 void (*para_log)(int, const char*, ...) = curses_log;
542
543 static void setup_signal_handling(void)
544 {
545 signal_pipe = para_signal_init();
546 para_install_sighandler(SIGINT);
547 para_install_sighandler(SIGTERM);
548 para_install_sighandler(SIGCHLD);
549 para_install_sighandler(SIGWINCH);
550 para_install_sighandler(SIGUSR1);
551 }
552
553 /* kill every process in the process group and exit */
554 __noreturn static void kill_pg_and_die(int ret)
555 {
556 para_sigaction(SIGTERM, SIG_IGN);
557 kill(0, SIGTERM);
558 exit(ret);
559 }
560
561 static void shutdown_curses(void)
562 {
563 if (!curses_active)
564 return;
565 def_prog_mode();
566 curses_active = 0;
567 endwin();
568 }
569
570 __noreturn static void finish(int ret)
571 {
572 shutdown_curses();
573 kill_pg_and_die(ret);
574 }
575
576 /*
577 * exit curses and print given message to stdout/stderr
578 */
579 __noreturn __printf_2_3 static void msg_n_exit(int ret, const char* fmt, ...)
580 {
581 va_list argp;
582 FILE *outfd = ret? stderr: stdout;
583
584 shutdown_curses();
585 va_start(argp, fmt);
586 vfprintf(outfd, fmt, argp);
587 va_end(argp);
588 kill_pg_and_die(ret);
589 }
590
591 static void print_welcome(void)
592 {
593 if (loglevel > LL_NOTICE)
594 return;
595 outputf(COLOR_WELCOME, "Welcome to %s. Theme: %s",
596 version_single_line("gui"), theme.name);
597 wclrtoeol(bot.win);
598 }
599
600 /*
601 * init all windows
602 */
603 static void init_wins(int top_lines)
604 {
605 int i;
606
607 top.lines = top_lines;
608 top.cols = COLS;
609 top.begy = 0;
610 top.begx = 0;
611
612 bot.lines = LINES - top.lines - 3;
613 bot.cols = COLS;
614 bot.begy = top.lines + 1;
615 bot.begx = 0;
616
617 sb.lines = 1;
618 sb.cols = COLS;
619 sb.begy = LINES - 2;
620 sb.begx = 0;
621
622 in.lines = 1;
623 in.cols = COLS;
624 in.begy = LINES - 1;
625 in.begx = 0;
626
627 sep.lines = 1;
628 sep.cols = COLS;
629 sep.begy = top.lines;
630 sep.begx = 0;
631
632 assume_default_colors(theme.default_fg, theme.default_bg);
633 if (top.win) {
634 mvwin(top.win, top.begy, top.begx);
635 wresize(top.win, top.lines, top.cols);
636
637 mvwin(sb.win, sb.begy, sb.begx);
638 wresize(sb.win, sb.lines, sb.cols);
639
640 mvwin(sep.win, sep.begy, sep.begx);
641 wresize(sep.win, sep.lines, sep.cols);
642
643 mvwin(bot.win, bot.begy, bot.begx);
644 wresize(bot.win, bot.lines, bot.cols);
645
646 mvwin(in.win, in.begy, in.begx);
647 wresize(in.win, in.lines, in.cols);
648 } else {
649 sep.win = newwin(sep.lines, sep.cols, sep.begy, sep.begx);
650 top.win = newwin(top.lines, top.cols, top.begy, top.begx);
651 bot.win = newwin(bot.lines, bot.cols, bot.begy, bot.begx);
652 sb.win = newwin(sb.lines, sb.cols, sb.begy, sb.begx);
653 in.win = newwin(in.lines, in.cols, in.begy, in.begx);
654 if (!top.win || !bot.win || !sb.win || !in.win || !sep.win)
655 msg_n_exit(1, "Error: Cannot create curses windows\n");
656 wclear(bot.win);
657 wclear(sb.win);
658 wclear(in.win);
659 scrollok(bot.win, 1);
660 wattron(sb.win, COLOR_PAIR(COLOR_STATUSBAR));
661 wattron(sep.win, COLOR_PAIR(COLOR_SEPARATOR));
662 wattron(bot.win, COLOR_PAIR(COLOR_BOT));
663 wattron(top.win, COLOR_PAIR(COLOR_TOP));
664 nodelay(top.win, 1);
665 nodelay(bot.win, 1);
666 nodelay(sb.win, 1);
667 nodelay(in.win, 0);
668
669 keypad(top.win, 1);
670 keypad(bot.win, 1);
671 keypad(sb.win, 1);
672 keypad(in.win, 1);
673 print_status_bar();
674 }
675 wmove(sep.win, 0, 0);
676 for (i = 1; i <= COLS; i++)
677 waddstr(sep.win, theme.sep_str);
678 wclear(top.win);
679 //wclear(bot.win);
680 wnoutrefresh(top.win);
681 wnoutrefresh(bot.win);
682 //wnoutrefresh(sb.win);
683 print_status_bar();
684 wnoutrefresh(in.win);
685 wnoutrefresh(sep.win);
686 doupdate();
687 }
688
689 /*
690 * Print stat item #i to curses window
691 */
692 static void print_stat_item(int i)
693 {
694 char *tmp;
695 struct stat_item_data d = theme.data[i];
696 char *c = stat_content[i];
697
698 if (!curses_active || !d.len || !c)
699 return;
700 tmp = make_message("%s%s%s", d.prefix, c, d.postfix);
701 wmove(top.win, d.y * top.lines / 100, d.x * COLS / 100);
702 wrefresh(top.win);
703 wattron(top.win, COLOR_PAIR(i + 1));
704 align_str(top.win, tmp, d.len * COLS / 100, d.align);
705 free(tmp);
706 wrefresh(top.win);
707 }
708
709 static int update_item(int item_num, char *buf)
710 {
711 char **c = stat_content + item_num;
712
713 free(*c);
714 if (buf && buf[0])
715 goto dup;
716 switch (item_num) {
717 case SI_ARTIST:
718 *c = para_strdup("(artist tag not set)");
719 goto print;
720 case SI_TITLE:
721 *c = para_strdup("(title tag not set)");
722 goto print;
723 case SI_YEAR:
724 *c = para_strdup("????");
725 goto print;
726 case SI_ALBUM:
727 *c = para_strdup("(album tag not set)");
728 goto print;
729 case SI_COMMENT:
730 *c = para_strdup("(comment tag not set)");
731 goto print;
732 }
733 dup:
734 *c = para_strdup(buf);
735 print:
736 print_stat_item(item_num);
737 return 1;
738 }
739
740 static int read_stat_pipe(fd_set *rfds)
741 {
742 static char *buf;
743 static int bufsize, loaded;
744 int ret, ret2;
745 size_t sz;
746
747 if (stat_pipe < 0)
748 return 0;
749 if (loaded >= bufsize) {
750 if (bufsize > 1000 * 1000) {
751 loaded = 0;
752 return 0;
753 }
754 bufsize += bufsize + 1000;
755 buf = para_realloc(buf, bufsize);
756 }
757 assert(loaded < bufsize);
758 ret = read_nonblock(stat_pipe, buf + loaded, bufsize - loaded,
759 rfds, &sz);
760 loaded += sz;
761 ret2 = for_each_stat_item(buf, loaded, update_item);
762 if (ret < 0 || ret2 < 0) {
763 loaded = 0;
764 return ret2 < 0? ret2 : ret;
765 }
766 sz = ret2; /* what is left */
767 if (sz > 0 && sz < loaded)
768 memmove(buf, buf + loaded - sz, sz);
769 loaded = sz;
770 return 1;
771 }
772
773 static void print_all_items(void)
774 {
775 int i;
776
777 if (!curses_active)
778 return;
779 FOR_EACH_STATUS_ITEM(i)
780 print_stat_item(i);
781 }
782
783 static void clear_all_items(void)
784 {
785 int i;
786
787 FOR_EACH_STATUS_ITEM(i) {
788 free(stat_content[i]);
789 stat_content[i] = para_strdup("");
790 }
791 }
792
793 static void init_pair_or_die(short pair, short f, short b)
794 {
795 if (init_pair(pair, f, b) == ERR)
796 msg_n_exit(EXIT_FAILURE, "fatal: init_pair() failed\n");
797 }
798
799 static void init_colors_or_die(void)
800 {
801 int i;
802
803 if (!has_colors())
804 msg_n_exit(EXIT_FAILURE, "fatal: No color term\n");
805 if (start_color() == ERR)
806 msg_n_exit(EXIT_FAILURE, "fatal: failed to start colors\n");
807 FOR_EACH_STATUS_ITEM(i)
808 if (theme.data[i].len)
809 init_pair_or_die(i + 1, theme.data[i].fg,
810 theme.data[i].bg);
811 init_pair_or_die(COLOR_STATUSBAR, theme.sb_fg, theme.sb_bg);
812 init_pair_or_die(COLOR_COMMAND, theme.cmd_fg, theme.cmd_bg);
813 init_pair_or_die(COLOR_OUTPUT, theme.output_fg, theme.output_bg);
814 init_pair_or_die(COLOR_MSG, theme.msg_fg, theme.msg_bg);
815 init_pair_or_die(COLOR_ERRMSG, theme.err_msg_fg, theme.err_msg_bg);
816 init_pair_or_die(COLOR_WELCOME, theme.welcome_fg, theme.welcome_bg);
817 init_pair_or_die(COLOR_SEPARATOR, theme.sep_fg, theme.sep_bg);
818 init_pair_or_die(COLOR_TOP, theme.default_fg, theme.default_bg);
819 init_pair_or_die(COLOR_BOT, theme.default_fg, theme.default_bg);
820 }
821
822 /* (Re-)initialize the curses library. */
823 static void init_curses(void)
824 {
825 curses_active = 1;
826 if (top.win && refresh() == ERR) /* refesh is really needed */
827 msg_n_exit(EXIT_FAILURE, "refresh() failed\n");
828 if (LINES < theme.lines_min || COLS < theme.cols_min)
829 msg_n_exit(EXIT_FAILURE, "Error: Terminal (%dx%d) too small"
830 " (need at least %dx%d)\n", COLS, LINES,
831 theme.cols_min, theme.lines_min);
832 curs_set(0); /* make cursor invisible, ignore errors */
833 nonl(); /* do not NL->CR/NL on output, always returns OK */
834 /* don't echo input */
835 if (noecho() == ERR)
836 msg_n_exit(EXIT_FAILURE, "fatal: noecho() failed\n");
837 /* take input chars one at a time, no wait for \n */
838 if (cbreak() == ERR)
839 msg_n_exit(EXIT_FAILURE, "fatal: cbreak() failed\n");
840 init_colors_or_die();
841 clear(); /* ignore non-fatal errors */
842 init_wins(theme.top_lines_default);
843 print_all_items();
844 // noecho(); /* don't echo input */
845 }
846
847 static void check_sigchld(void)
848 {
849 int ret;
850 pid_t pid;
851 reap_next_child:
852 ret = para_reap_child(&pid);
853 if (ret <= 0)
854 return;
855 if (pid == cmd_pid)
856 cmd_pid = 0;
857 goto reap_next_child;
858 }
859
860 /*
861 * This sucker modifies its first argument. *handler and *arg are
862 * pointers to 0-terminated strings (inside line). Crap.
863 */
864 static int split_key_map(char *line, char **handler, char **arg)
865 {
866 if (!(*handler = strchr(line + 1, ':')))
867 goto err_out;
868 **handler = '\0';
869 (*handler)++;
870 if (!(*arg = strchr(*handler, ':')))
871 goto err_out;
872 **arg = '\0';
873 (*arg)++;
874 return 1;
875 err_out:
876 return 0;
877 }
878
879 static int check_key_map_args(void)
880 {
881 char *s;
882 int i, ret = -1;
883 char *tmp = NULL, *handler, *arg;
884
885 for (i = 0; i < conf.key_map_given; ++i) {
886 s = conf.key_map_arg[i];
887 if (!(*s))
888 goto err_out;
889 free(tmp);
890 tmp = para_strdup(s);
891 if (!split_key_map(tmp, &handler, &arg))
892 goto err_out;
893 if (strlen(handler) != 1)
894 goto err_out;
895 if (*handler != 'x'
896 && *handler != 'd'
897 && *handler != 'i'
898 && *handler != 'p')
899 goto err_out;
900 if (*handler != 'i')
901 continue;
902 if (find_cmd_byname(arg) < 0)
903 goto err_out;
904 }
905 ret = 0;
906 err_out:
907 free(tmp);
908 return ret;
909 }
910
911 /*
912 * React to various signal-related events
913 */
914 static void handle_signal(int sig)
915 {
916 switch (sig) {
917 case SIGTERM:
918 msg_n_exit(EXIT_FAILURE,
919 "only the good die young (caught SIGTERM))\n");
920 return;
921 case SIGWINCH:
922 if (curses_active) {
923 shutdown_curses();
924 init_curses();
925 redraw_bot_win();
926 }
927 return;
928 case SIGINT:
929 PARA_WARNING_LOG("caught SIGINT, reset");
930 /* Nothing to do. SIGINT killed our child which gets noticed
931 * by do_select and resets everything.
932 */
933 return;
934 case SIGUSR1:
935 PARA_NOTICE_LOG("got SIGUSR1, rereading configuration");
936 com_reread_conf();
937 return;
938 case SIGCHLD:
939 check_sigchld();
940 return;
941 }
942 }
943
944 static void status_pre_select(fd_set *rfds, int *max_fileno, struct timeval *tv)
945 {
946 static struct timeval next_exec, atm, diff;
947 int ret, fds[3] = {0, 1, 0};
948 pid_t pid;
949
950 if (stat_pipe >= 0)
951 goto success;
952 /* Avoid busy loop */
953 gettimeofday(&atm, NULL);
954 if (tv_diff(&next_exec, &atm, &diff) > 0) {
955 if (tv_diff(&diff, tv, NULL) < 0)
956 *tv = diff;
957 return;
958 }
959 next_exec.tv_sec = atm.tv_sec + 2;
960 ret = para_exec_cmdline_pid(&pid, conf.stat_cmd_arg, fds);
961 if (ret < 0)
962 return;
963 ret = mark_fd_nonblocking(fds[1]);
964 if (ret < 0) {
965 close(fds[1]);
966 return;
967 }
968 stat_pipe = fds[1];
969 success:
970 para_fd_set(stat_pipe, rfds, max_fileno);
971 }
972
973 #define COMMAND_BUF_SIZE 32768
974
975 /*
976 * This is the core select loop. Besides the (internal) signal
977 * pipe, the following other fds are checked according to the mode:
978 *
979 * GETCH_MODE: check stdin, return when key is pressed
980 *
981 * COMMAND_MODE: check command fds and stdin. Return when peer has closed both
982 * stdout and stderr or when any key is pressed.
983 *
984 * EXTERNAL_MODE: Check only signal pipe. Used when an external command
985 * is running. During that time curses is disabled. Returns when
986 * cmd_pid == 0.
987 */
988 static int do_select(int mode)
989 {
990 fd_set rfds;
991 int ret, i, max_fileno;
992 char command_buf[2][COMMAND_BUF_SIZE] = {"", ""};
993 int cbo[2] = {0, 0}; /* command buf offsets */
994 struct timeval tv;
995 unsigned flags[2] = {0, 0}; /* for for_each_line() */
996
997 repeat:
998 tv.tv_sec = conf.timeout_arg / 1000;
999 tv.tv_usec = (conf.timeout_arg % 1000) * 1000;
1000 // ret = refresh_status();
1001 FD_ZERO(&rfds);
1002 max_fileno = 0;
1003 status_pre_select(&rfds, &max_fileno, &tv);
1004 /* signal pipe */
1005 para_fd_set(signal_pipe, &rfds, &max_fileno);
1006 /* command pipe only for COMMAND_MODE */
1007 if (mode == COMMAND_MODE) {
1008 if (command_fds[0] >= 0)
1009 para_fd_set(command_fds[0], &rfds, &max_fileno);
1010 if (command_fds[1] >= 0)
1011 para_fd_set(command_fds[1], &rfds, &max_fileno);
1012 }
1013 if (mode == GETCH_MODE || mode == COMMAND_MODE)
1014 para_fd_set(STDIN_FILENO, &rfds, &max_fileno);
1015 ret = para_select(max_fileno + 1, &rfds, NULL, &tv);
1016 if (ret <= 0)
1017 goto check_return; /* skip fd checks */
1018 /* signals */
1019 ret = para_next_signal(&rfds);
1020 if (ret > 0)
1021 handle_signal(ret);
1022 /* read command pipe if ready */
1023 if (mode == COMMAND_MODE) {
1024 for (i = 0; i < 2; i++) {
1025 size_t sz;
1026 if (command_fds[i] < 0)
1027 continue;
1028 ret = read_nonblock(command_fds[i],
1029 command_buf[i] + cbo[i],
1030 COMMAND_BUF_SIZE - 1 - cbo[i], &rfds, &sz);
1031 cbo[i] += sz;
1032 sz = cbo[i];
1033 cbo[i] = for_each_line(flags[i], command_buf[i], cbo[i],
1034 add_output_line, &i);
1035 if (sz != cbo[i]) { /* at least one line found */
1036 wrefresh(bot.win);
1037 flags[i] = 0;
1038 }
1039 if (ret < 0) {
1040 PARA_NOTICE_LOG("closing command fd %d: %s",
1041 i, para_strerror(-ret));
1042 close(command_fds[i]);
1043 command_fds[i] = -1;
1044 flags[i] = 0;
1045 cbo[i] = 0;
1046 if (command_fds[!i] < 0) /* both fds closed */
1047 return 0;
1048 }
1049 if (cbo[i] == COMMAND_BUF_SIZE - 1) {
1050 PARA_NOTICE_LOG("discarding overlong line");
1051 cbo[i] = 0;
1052 flags[i] = FELF_DISCARD_FIRST;
1053 }
1054 }
1055 }
1056 ret = read_stat_pipe(&rfds);
1057 if (ret < 0) {
1058 PARA_NOTICE_LOG("closing stat pipe: %s\n", para_strerror(-ret));
1059 close(stat_pipe);
1060 stat_pipe = -1;
1061 clear_all_items();
1062 free(stat_content[SI_BASENAME]);
1063 stat_content[SI_BASENAME] =
1064 para_strdup("stat command terminated!?");
1065 print_all_items();
1066 }
1067 check_return:
1068 switch (mode) {
1069 case COMMAND_MODE:
1070 ret = wgetch(top.win);
1071 if (ret != ERR && ret != KEY_RESIZE) {
1072 if (command_fds[0] >= 0) {
1073 close(command_fds[0]);
1074 command_fds[0] = -1;
1075 }
1076 if (command_fds[1] >= 0) {
1077 close(command_fds[1]);
1078 command_fds[1] = -1;
1079 }
1080 if (cmd_pid)
1081 kill(cmd_pid, SIGTERM);
1082 return -1;
1083 }
1084 break;
1085 case GETCH_MODE:
1086 ret = wgetch(top.win);
1087 if (ret != ERR && ret != KEY_RESIZE)
1088 return ret;
1089 break;
1090 case EXTERNAL_MODE:
1091 if (cmd_pid == 0)
1092 return 0;
1093 }
1094 goto repeat;
1095 }
1096
1097 /*
1098 * read from command pipe and print data to bot window
1099 */
1100 static void send_output(void)
1101 {
1102 int ret;
1103
1104 ret = mark_fd_nonblocking(command_fds[0]);
1105 if (ret < 0)
1106 goto fail;
1107 ret = mark_fd_nonblocking(command_fds[1]);
1108 if (ret < 0)
1109 goto fail;
1110 if (do_select(COMMAND_MODE) >= 0)
1111 PARA_INFO_LOG("command complete");
1112 else
1113 PARA_NOTICE_LOG("command aborted");
1114 print_in_bar(COLOR_MSG, " ");
1115 return;
1116 fail:
1117 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
1118 close(command_fds[0]);
1119 close(command_fds[1]);
1120 }
1121
1122 static void para_cmd(char *cmd)
1123 {
1124 int ret, fds[3] = {0, 1, 1};
1125 char *c = make_message(BINDIR "/para_client -- %s", cmd);
1126
1127 outputf(COLOR_COMMAND, "%s", c);
1128 print_in_bar(COLOR_MSG, "executing client command, hit any key to abort\n");
1129 ret = para_exec_cmdline_pid(&cmd_pid, c, fds);
1130 free(c);
1131 if (ret < 0)
1132 return;
1133 command_fds[0] = fds[1];
1134 command_fds[1] = fds[2];
1135 send_output();
1136 }
1137
1138 /*
1139 * exec command and print output to bot win
1140 */
1141 static void display_cmd(char *cmd)
1142 {
1143 int fds[3] = {0, 1, 1};
1144
1145 print_in_bar(COLOR_MSG, "executing display command, hit any key to abort");
1146 outputf(COLOR_COMMAND, "%s", cmd);
1147 if (para_exec_cmdline_pid(&cmd_pid, cmd, fds) < 0)
1148 return;
1149 command_fds[0] = fds[1];
1150 command_fds[1] = fds[2];
1151 send_output();
1152 }
1153
1154 /*
1155 * shutdown curses and stat pipe before executing external commands
1156 */
1157 static void external_cmd(char *cmd)
1158 {
1159 int fds[3] = {-1, -1, -1};
1160
1161 if (cmd_pid)
1162 return;
1163 shutdown_curses();
1164 if (para_exec_cmdline_pid(&cmd_pid, cmd, fds) < 0)
1165 return;
1166 do_select(EXTERNAL_MODE);
1167 init_curses();
1168 }
1169
1170 static void print_scroll_msg(void)
1171 {
1172 unsigned lines_total, filled = ringbuffer_filled(bot_win_rb);
1173 int first_rbe = first_visible_rbe(&lines_total);
1174 print_in_bar(COLOR_MSG, "scrolled view: %d-%d/%d\n", filled - first_rbe,
1175 filled - scroll_position, ringbuffer_filled(bot_win_rb));
1176 }
1177
1178 static void com_scroll_top(void)
1179 {
1180 int i = RINGBUFFER_SIZE - 1;
1181 unsigned lines = 0;
1182
1183 while (i > 0 && !ringbuffer_get(bot_win_rb, i))
1184 i--;
1185 /* i is oldest entry */
1186 for (; lines < bot.lines && i >= 0; i--) {
1187 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, i);
1188 if (!rbe)
1189 break;
1190 lines += NUM_LINES(rbe->len);
1191 }
1192 i++;
1193 if (lines > 0 && scroll_position != i) {
1194 scroll_position = i;
1195 redraw_bot_win();
1196 print_scroll_msg();
1197 return;
1198 }
1199 print_in_bar(COLOR_ERRMSG, "top of buffer is shown\n");
1200 }
1201
1202 static void com_cancel_scrolling(void)
1203 {
1204
1205 if (scroll_position == 0) {
1206 print_in_bar(COLOR_ERRMSG, "bottom of buffer is shown\n");
1207 return;
1208 }
1209 scroll_position = 0;
1210 redraw_bot_win();
1211 }
1212
1213 static void com_page_down(void)
1214 {
1215 unsigned lines = 0;
1216 int i = scroll_position;
1217 while (lines < bot.lines && --i > 0) {
1218 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, i);
1219 if (!rbe)
1220 break;
1221 lines += NUM_LINES(rbe->len);
1222 }
1223 if (lines) {
1224 scroll_position = i;
1225 redraw_bot_win();
1226 print_scroll_msg();
1227 return;
1228 }
1229 print_in_bar(COLOR_ERRMSG, "bottom of buffer is shown\n");
1230 }
1231
1232 static void com_page_up(void)
1233 {
1234 unsigned lines;
1235 int fvr = first_visible_rbe(&lines);
1236
1237 if (fvr < 0 || fvr + 1 >= ringbuffer_filled(bot_win_rb)) {
1238 print_in_bar(COLOR_ERRMSG, "top of buffer is shown\n");
1239 return;
1240 }
1241 scroll_position = fvr + 1;
1242 for (; scroll_position > 0; scroll_position--) {
1243 first_visible_rbe(&lines);
1244 if (lines == bot.lines)
1245 break;
1246 }
1247 redraw_bot_win();
1248 print_scroll_msg();
1249 }
1250
1251 static void com_scroll_down(void)
1252 {
1253 struct rb_entry *rbe;
1254 int rbe_lines;
1255
1256 if (!scroll_position) {
1257 print_in_bar(COLOR_ERRMSG, "bottom of buffer is shown\n");
1258 return;
1259 }
1260 scroll_position--;
1261 rbe = ringbuffer_get(bot_win_rb, scroll_position);
1262 rbe_lines = NUM_LINES(rbe->len);
1263 wscrl(bot.win, rbe_lines);
1264 wmove(bot.win, bot.lines - rbe_lines, 0);
1265 wattron(bot.win, COLOR_PAIR(rbe->color));
1266 waddstr(bot.win, rbe->msg);
1267 wrefresh(bot.win);
1268 print_scroll_msg();
1269 }
1270
1271 static void com_scroll_up(void)
1272 {
1273 struct rb_entry *rbe = NULL;
1274 unsigned lines;
1275 int i, first_rbe, num_scroll;
1276
1277 /* the entry that is going to vanish */
1278 rbe = ringbuffer_get(bot_win_rb, scroll_position);
1279 if (!rbe)
1280 goto err_out;
1281 num_scroll = NUM_LINES(rbe->len);
1282 first_rbe = first_visible_rbe(&lines);
1283 if (first_rbe < 0 || (first_rbe == ringbuffer_filled(bot_win_rb) - 1))
1284 goto err_out;
1285 scroll_position++;
1286 wscrl(bot.win, -num_scroll);
1287 i = draw_top_rbe(&lines);
1288 if (i < 0)
1289 goto err_out;
1290 while (i > 0 && lines < num_scroll) {
1291 int rbe_lines;
1292 rbe = ringbuffer_get(bot_win_rb, --i);
1293 if (!rbe)
1294 break;
1295 rbe_lines = NUM_LINES(rbe->len);
1296 lines += rbe_lines;
1297 // fprintf(stderr, "msg: %s\n", rbe->msg);
1298 wattron(bot.win, COLOR_PAIR(rbe->color));
1299 waddstr(bot.win, "\n");
1300 waddstr(bot.win, rbe->msg);
1301 if (!i)
1302 break;
1303 i--;
1304 }
1305 wrefresh(bot.win);
1306 print_scroll_msg();
1307 return;
1308 err_out:
1309 print_in_bar(COLOR_ERRMSG, "top of buffer is shown\n");
1310 }
1311
1312 static void com_ll_decr(void)
1313 {
1314 if (loglevel <= LL_DEBUG) {
1315 print_in_bar(COLOR_ERRMSG,
1316 "loglevel already at maximal verbosity\n");
1317 return;
1318 }
1319 loglevel--;
1320 print_in_bar(COLOR_MSG, "loglevel set to %d\n", loglevel);
1321 }
1322
1323 static void com_ll_incr(void)
1324 {
1325 if (loglevel >= LL_EMERG) {
1326 print_in_bar(COLOR_ERRMSG,
1327 "loglevel already at minimal verbosity\n");
1328 return;
1329 }
1330 loglevel++;
1331 print_in_bar(COLOR_MSG, "loglevel set to %d\n", loglevel);
1332 }
1333
1334 /*
1335 * reread configuration, terminate on errors
1336 */
1337 static void com_reread_conf(void)
1338 {
1339 char *cf =configfile_exists();
1340 struct gui_cmdline_parser_params params = {
1341 .override = 1,
1342 .initialize = 1,
1343 .check_required = 0,
1344 .check_ambiguity = 0,
1345 .print_errors = 0,
1346 };
1347
1348 if (!cf) {
1349 PARA_WARNING_LOG("there is no configuration to read");
1350 return;
1351 }
1352 PARA_INFO_LOG("rereading command line options and config file");
1353 gui_cmdline_parser_ext(_argc, _argv, &conf, &params);
1354 /*
1355 * Despite .print_errors is set to 0, gengetopt will print to stderr
1356 * anyway, and exit on errors. So we have to shutdown curses first.
1357 */
1358 shutdown_curses();
1359 gui_cmdline_parser_config_file(cf, &conf, &params);
1360 init_curses();
1361 PARA_NOTICE_LOG("config file reloaded");
1362 if (check_key_map_args() < 0)
1363 finish(EXIT_FAILURE);
1364 }
1365
1366 static void com_help(void)
1367 {
1368 int i;
1369
1370 for (i = 0; i < conf.key_map_given; ++i) {
1371 char *handler, *arg, *tmp = para_strdup(conf.key_map_arg[i]);
1372 const char *handler_text = "???", *desc = NULL;
1373
1374 if (!split_key_map(tmp, &handler, &arg)) {
1375 free(tmp);
1376 return;
1377 }
1378 switch (*handler) {
1379 case 'i':
1380 handler_text = "internal";
1381 desc = command_list[find_cmd_byname(arg)].description;
1382 break;
1383 case 'x': handler_text = "external"; break;
1384 case 'd': handler_text = "display "; break;
1385 case 'p': handler_text = "para "; break;
1386 }
1387 outputf(COLOR_MSG, "%s\t%s\t%s%s\t%s", tmp, handler_text, arg,
1388 strlen(arg) < 8? "\t" : "",
1389 desc? desc : "");
1390 free(tmp);
1391 }
1392 for (i = 0; command_list[i].handler; i++) {
1393 struct gui_command gc = command_list[i];
1394
1395 outputf(COLOR_MSG, "%s\tinternal\t%s\t%s%s", gc.key, gc.name,
1396 strlen(gc.name) < 8? "\t" : "",
1397 gc.description);
1398 }
1399 print_in_bar(COLOR_MSG, "try \"para_gui -h\" or \"para_client help\" "
1400 "for more info");
1401 }
1402
1403 static void com_shrink_top_win(void)
1404 {
1405 if (top.lines <= theme.top_lines_min) {
1406 PARA_WARNING_LOG("can not decrease top window");
1407 return;
1408 }
1409 init_wins(top.lines - 1);
1410 wclear(top.win);
1411 print_all_items();
1412 print_in_bar(COLOR_MSG, "%s", "decreased top window");
1413 }
1414
1415 static void com_enlarge_top_win(void)
1416 {
1417 if (bot.lines < 3) {
1418 PARA_WARNING_LOG("can not increase top window");
1419 return;
1420 }
1421 init_wins(top.lines + 1);
1422 wclear(top.win);
1423 print_all_items();
1424 print_in_bar(COLOR_MSG, "increased top window");
1425 }
1426
1427 static void com_version(void)
1428 {
1429 print_in_bar(COLOR_MSG, "%s", version_single_line("gui"));
1430 }
1431
1432 __noreturn static void com_quit(void)
1433 {
1434 finish(0);
1435 }
1436
1437 static void com_refresh(void)
1438 {
1439 shutdown_curses();
1440 init_curses();
1441 }
1442
1443 static void change_theme(int next)
1444 {
1445 if (next)
1446 next_theme(&theme);
1447 else
1448 prev_theme(&theme);
1449 /* This seems to be needed twice, why? */
1450 com_refresh();
1451 com_refresh();
1452 PARA_NOTICE_LOG("new theme: %s", theme.name);
1453 }
1454
1455 static void com_next_theme(void)
1456 {
1457 change_theme(1);
1458 }
1459
1460 static void com_prev_theme(void)
1461 {
1462 change_theme(0);
1463 }
1464
1465
1466 static void handle_command(int c)
1467 {
1468 int i;
1469
1470 /* first check user's key bindings */
1471 for (i = 0; i < conf.key_map_given; ++i) {
1472 char *tmp, *handler, *arg;
1473
1474 tmp = para_strdup(conf.key_map_arg[i]);
1475 if (!split_key_map(tmp, &handler, &arg)) {
1476 free(tmp);
1477 return;
1478 }
1479 if (strcmp(tmp, km_keyname(c))) {
1480 free(tmp);
1481 continue;
1482 }
1483 if (*handler == 'd')
1484 display_cmd(arg);
1485 else if (*handler == 'x')
1486 external_cmd(arg);
1487 else if (*handler == 'p')
1488 para_cmd(arg);
1489 else if (*handler == 'i') {
1490 int num = find_cmd_byname(arg);
1491 if (num >= 0)
1492 command_list[num].handler();
1493 }
1494 free(tmp);
1495 return;
1496 }
1497 /* not found, check internal key bindings */
1498 for (i = 0; command_list[i].handler; i++) {
1499 if (!strcmp(km_keyname(c), command_list[i].key)) {
1500 command_list[i].handler();
1501 return;
1502 }
1503 }
1504 print_in_bar(COLOR_ERRMSG, "key '%s' is not bound, press ? for help",
1505 km_keyname(c));
1506 }
1507
1508 __noreturn static void print_help_and_die(void)
1509 {
1510 struct ggo_help h = DEFINE_GGO_HELP(gui);
1511 bool d = conf.detailed_help_given;
1512
1513 ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
1514 exit(0);
1515 }
1516
1517 int main(int argc, char *argv[])
1518 {
1519 int ret;
1520 char *cf;
1521
1522 _argc = argc;
1523 _argv = argv;
1524
1525 gui_cmdline_parser(argc, argv, &conf); /* exits on errors */
1526 loglevel = get_loglevel_by_name(conf.loglevel_arg);
1527 version_handle_flag("gui", conf.version_given);
1528 if (conf.help_given || conf.detailed_help_given)
1529 print_help_and_die();
1530 cf = configfile_exists();
1531 if (!cf && conf.config_file_given) {
1532 fprintf(stderr, "can not read config file %s\n",
1533 conf.config_file_arg);
1534 exit(EXIT_FAILURE);
1535 }
1536 if (cf) {
1537 struct gui_cmdline_parser_params params = {
1538 .override = 0,
1539 .initialize = 0,
1540 .check_required = 0,
1541 .check_ambiguity = 0,
1542 .print_errors = 1,
1543 };
1544 gui_cmdline_parser_config_file(cf, &conf, &params);
1545 loglevel = get_loglevel_by_name(conf.loglevel_arg);
1546 }
1547 if (check_key_map_args() < 0) {
1548 fprintf(stderr, "invalid key map\n");
1549 exit(EXIT_FAILURE);
1550 }
1551 init_theme_or_die(conf.theme_arg, &theme);
1552 top.lines = theme.top_lines_default;
1553 setup_signal_handling();
1554 bot_win_rb = ringbuffer_new(RINGBUFFER_SIZE);
1555 setlocale(LC_CTYPE, "");
1556 initscr(); /* needed only once, always successful */
1557 init_curses();
1558 print_welcome();
1559 for (;;) {
1560 print_status_bar();
1561 ret = do_select(GETCH_MODE);
1562 if (!ret)
1563 continue;
1564 print_in_bar(COLOR_MSG, " ");
1565 handle_command(ret);
1566 }
1567 }