2 * Copyright (C) 1998-2009 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file gui.c Curses-based interface for paraslash. */
10 #include <sys/types.h>
12 #include "gui.cmdline.h"
17 #include "ringbuffer.h"
24 /** define the array of error lists needed by para_gui */
26 static char *stat_content
[NUM_STAT_ITEMS
];
28 #define STANDARD_STATUS_BAR "para_gui " PACKAGE_VERSION " (hit ? for help)"
30 static int signal_pipe
;
32 static struct win_data
{
38 } top
, bot
, sb
, in
, sep
;
40 #define RINGBUFFER_SIZE 512
46 struct ringbuffer
*bot_win_rb
;
47 #define NUM_LINES(len) (1 + (len) / bot.cols)
49 static unsigned scroll_position
;
51 static int cmd_died
, curses_active
;
54 static int command_pipe
= -1;
55 static int audiod_pipe
= -1;
56 static struct gui_args_info conf
;
58 enum {GETCH_MODE
, COMMAND_MODE
, EXTERNAL_MODE
};
61 #define COLOR_STATUSBAR 52
62 #define COLOR_COMMAND 53
63 #define COLOR_OUTPUT 54
65 #define COLOR_ERRMSG 56
66 #define COLOR_WELCOME 57
67 #define COLOR_SEPARATOR 58
74 const char *description
;
75 void (*handler
)(void);
81 char postfix
[MAXLINE
];
87 char content
[MAXLINE
];
90 static struct gui_theme theme
;
95 static void com_help(void);
96 static void com_reread_conf(void);
97 static void com_enlarge_top_win(void);
98 static void com_shrink_top_win(void);
99 static void com_version(void);
100 static void com_quit(void);
101 static void com_refresh(void);
102 static void com_ll_incr(void);
103 static void com_ll_decr(void);
104 static void com_prev_theme(void);
105 static void com_next_theme(void);
106 static void com_scroll_up(void);
107 static void com_scroll_down(void);
108 static void com_page_up(void);
109 static void com_page_down(void);
111 struct gui_command command_list
[] = {
115 .description
= "print help",
119 .name
= "enlarge_win",
120 .description
= "enlarge the top window",
121 .handler
= com_enlarge_top_win
124 .name
= "shrink_win",
125 .description
= "shrink the top window",
126 .handler
= com_shrink_top_win
129 .name
= "reread_conf",
130 .description
= "reread configuration file",
131 .handler
= com_reread_conf
135 .description
= "exit para_gui",
140 .description
= "redraw the screen",
141 .handler
= com_refresh
144 .name
= "next_theme",
145 .description
= "switch to next theme",
146 .handler
= com_next_theme
149 .name
= "prev_theme",
150 .description
= "switch to previous stream",
151 .handler
= com_prev_theme
155 .description
= "increase loglevel (decreases verbosity)",
156 .handler
= com_ll_incr
160 .description
= "decrease loglevel (increases verbosity)",
161 .handler
= com_ll_decr
165 .description
= "show the para_gui version",
166 .handler
= com_version
170 .description
= "scroll up one line",
171 .handler
= com_scroll_up
174 .name
= "scroll_down",
175 .description
= "scroll down one line",
176 .handler
= com_scroll_down
180 .description
= "scroll up one page",
181 .handler
= com_page_up
185 .description
= "scroll down one page",
186 .handler
= com_page_down
192 static int para_open_audiod_pipe(char *cmd
)
194 int fds
[3] = {0, 1, 0};
196 int ret
= para_exec_cmdline_pid(&pid
, cmd
, fds
);
199 ret
= mark_fd_nonblocking(fds
[1]);
206 static int find_cmd_byname(char *name
)
210 for (i
= 0; command_list
[i
].handler
; i
++)
211 if (!strcmp(command_list
[i
].name
, name
))
216 /* taken from mutt */
217 static char *km_keyname(int c
)
222 sprintf(buf
, "<up>");
226 sprintf(buf
, "<down>");
230 sprintf(buf
, "<left>");
233 if (c
== KEY_RIGHT
) {
234 sprintf(buf
, "<right>");
237 if (c
== KEY_NPAGE
) {
238 sprintf(buf
, "<npage>");
241 if (c
== KEY_PPAGE
) {
242 sprintf(buf
, "<ppage>");
245 if (c
< 256 && c
> -128 && iscntrl((unsigned char) c
)) {
250 buf
[1] = (c
+ '@') & 0x7f;
253 snprintf(buf
, sizeof(buf
), "\\%d%d%d", c
>> 6,
254 (c
>> 3) & 7, c
& 7);
255 } else if (c
>= KEY_F0
&& c
< KEY_F(256))
256 sprintf(buf
, "<F%d>", c
- KEY_F0
);
258 snprintf(buf
, sizeof(buf
), "%c", (unsigned char) c
);
260 snprintf(buf
, sizeof(buf
), "\\x%hx", (unsigned short) c
);
264 static char *configfile_exists(void)
266 static char *config_file
;
269 if (!conf
.config_file_given
) {
271 char *home
= para_homedir();
272 config_file
= make_message("%s/.paraslash/gui.conf",
278 tmp
= conf
.config_file_arg
;
279 return file_exists(tmp
)? tmp
: NULL
;
283 * print num spaces to curses window
285 static void add_spaces(WINDOW
* win
, unsigned int num
)
294 * print aligned string to curses window. This function always prints
297 static int align_str(WINDOW
* win
, char *str
, unsigned int len
,
300 int i
, num
; /* of spaces */
304 num
= len
- strlen(str
);
309 /* replace newlines by spaces */
310 for (i
= 0; i
< len
; i
++) {
316 add_spaces(win
, num
);
317 } else if (align
== RIGHT
) {
318 add_spaces(win
, num
);
321 add_spaces(win
, num
/ 2);
322 waddstr(win
, str
[0]? str
: "");
323 add_spaces(win
, num
- num
/ 2);
328 __printf_2_3
static void print_in_bar(int color
, const char *fmt
,...)
334 wattron(in
.win
, COLOR_PAIR(color
));
335 PARA_VSPRINTF(fmt
, msg
);
337 align_str(in
.win
, msg
, sb
.cols
, LEFT
);
343 * update the status bar
345 static void print_status_bar(void)
351 tmp
= para_strdup(STANDARD_STATUS_BAR
);
353 align_str(sb
.win
, tmp
, sb
.cols
, CENTER
);
359 * get the number of the oldest rbe that is (partially) visible. On return,
360 * lines contains the sum of the number of lines of all visable entries. If the
361 * first one is only partially visible, lines is greater than bot.lines.
363 static int first_visible_rbe(unsigned *lines
)
367 for (i
= scroll_position
; i
< RINGBUFFER_SIZE
; i
++) {
368 struct rb_entry
*rbe
= ringbuffer_get(bot_win_rb
, i
);
372 // fprintf(stderr, "found: %s\n", rbe->msg);
373 rbe_lines
= NUM_LINES(rbe
->len
);
374 if (rbe_lines
> bot
.lines
)
377 if (*lines
>= bot
.lines
)
380 return RINGBUFFER_SIZE
- 1;
383 static int draw_top_rbe(unsigned *lines
)
386 int offset
, fvr
= first_visible_rbe(lines
);
387 struct rb_entry
*rbe
;
391 wmove(bot
.win
, 0, 0);
392 rbe
= ringbuffer_get(bot_win_rb
, fvr
);
395 /* first rbe might be only partially visible */
396 offset
= (*lines
- bot
.lines
) * bot
.cols
;
397 len
= strlen(rbe
->msg
);
398 if (offset
< 0 || len
< offset
)
400 wattron(bot
.win
, COLOR_PAIR(rbe
->color
));
401 waddstr(bot
.win
, rbe
->msg
+ offset
);
402 *lines
= NUM_LINES(len
- offset
);
406 static void redraw_bot_win(void)
411 wmove(bot
.win
, 0, 0);
413 i
= draw_top_rbe(&lines
);
416 while (i
> 0 && lines
< bot
.lines
) {
417 struct rb_entry
*rbe
= ringbuffer_get(bot_win_rb
, --i
);
420 waddstr(bot
.win
, "\n");
423 lines
+= NUM_LINES(rbe
->len
);
424 wattron(bot
.win
, COLOR_PAIR(rbe
->color
));
425 waddstr(bot
.win
, "\n");
426 waddstr(bot
.win
, rbe
->msg
);
432 static void rb_add_entry(int color
, char *msg
)
434 struct rb_entry
*old
, *new = para_malloc(sizeof(struct rb_entry
));
437 new->len
= strlen(msg
);
439 old
= ringbuffer_add(bot_win_rb
, new);
440 // fprintf(stderr, "added: %s\n", new->msg);
445 if (scroll_position
) {
446 /* discard current scrolling, like xterm does */
451 wattron(bot
.win
, COLOR_PAIR(color
));
452 getyx(bot
.win
, y
, x
);
454 waddstr(bot
.win
, "\n");
455 waddstr(bot
.win
, msg
);
459 * print formated output to bot win and refresh
461 __printf_2_3
static void outputf(int color
, const char* fmt
,...)
467 PARA_VSPRINTF(fmt
, msg
);
468 rb_add_entry(color
, msg
);
472 static int add_output_line(char *line
, __a_unused
void *data
)
476 rb_add_entry(COLOR_OUTPUT
, para_strdup(line
));
482 __printf_2_3
void para_log(int ll
, const char *fmt
,...)
487 if (ll
< loglevel
|| !curses_active
)
496 color
= COLOR_ERRMSG
;
498 PARA_VSPRINTF(fmt
, msg
);
500 rb_add_entry(color
, msg
);
504 static void setup_signal_handling(void)
506 signal_pipe
= para_signal_init();
507 para_install_sighandler(SIGINT
);
508 para_install_sighandler(SIGTERM
);
509 para_install_sighandler(SIGCHLD
);
510 para_install_sighandler(SIGWINCH
);
511 para_install_sighandler(SIGUSR1
);
512 para_sigaction(SIGHUP
, SIG_IGN
);
515 __noreturn
static void do_exit(int ret
)
517 para_sigaction(SIGTERM
, SIG_IGN
);
522 static void shutdown_curses(void)
531 __noreturn
static void finish(int ret
)
538 * exit curses and print given message to stdout/stderr
540 __noreturn __printf_2_3
static void msg_n_exit(int ret
, const char* fmt
, ...)
543 FILE *outfd
= ret
? stderr
: stdout
;
547 vfprintf(outfd
, fmt
, argp
);
552 static void print_welcome(void)
554 if (loglevel
> LL_NOTICE
)
556 outputf(COLOR_WELCOME
, "Welcome to para_gui " PACKAGE_VERSION
557 " \"" CODENAME
"\". Theme: %s", theme
.name
);
564 static void init_wins(int top_lines
)
568 top
.lines
= top_lines
;
573 bot
.lines
= LINES
- top
.lines
- 3;
575 bot
.begy
= top
.lines
+ 1;
590 sep
.begy
= top
.lines
;
593 assume_default_colors(theme
.default_fg
, theme
.default_bg
);
595 mvwin(top
.win
, top
.begy
, top
.begx
);
596 wresize(top
.win
, top
.lines
, top
.cols
);
598 mvwin(sb
.win
, sb
.begy
, sb
.begx
);
599 wresize(sb
.win
, sb
.lines
, sb
.cols
);
601 mvwin(sep
.win
, sep
.begy
, sep
.begx
);
602 wresize(sep
.win
, sep
.lines
, sep
.cols
);
604 mvwin(bot
.win
, bot
.begy
, bot
.begx
);
605 wresize(bot
.win
, bot
.lines
, bot
.cols
);
607 mvwin(in
.win
, in
.begy
, in
.begx
);
608 wresize(in
.win
, in
.lines
, in
.cols
);
610 sep
.win
= newwin(sep
.lines
, sep
.cols
, sep
.begy
, sep
.begx
);
611 top
.win
= newwin(top
.lines
, top
.cols
, top
.begy
, top
.begx
);
612 bot
.win
= newwin(bot
.lines
, bot
.cols
, bot
.begy
, bot
.begx
);
613 sb
.win
= newwin(sb
.lines
, sb
.cols
, sb
.begy
, sb
.begx
);
614 in
.win
= newwin(in
.lines
, in
.cols
, in
.begy
, in
.begx
);
615 if (!top
.win
|| !bot
.win
|| !sb
.win
|| !in
.win
|| !sep
.win
)
616 msg_n_exit(1, "Error: Cannot create curses windows\n");
620 scrollok(bot
.win
, 1);
621 wattron(sb
.win
, COLOR_PAIR(COLOR_STATUSBAR
));
622 wattron(sep
.win
, COLOR_PAIR(COLOR_SEPARATOR
));
623 wattron(bot
.win
, COLOR_PAIR(COLOR_BOT
));
624 wattron(top
.win
, COLOR_PAIR(COLOR_TOP
));
636 wmove(sep
.win
, 0, 0);
637 for (i
= 1; i
<= COLS
; i
++)
638 waddstr(sep
.win
, theme
.sep_str
);
641 wnoutrefresh(top
.win
);
642 wnoutrefresh(bot
.win
);
643 //wnoutrefresh(sb.win);
645 wnoutrefresh(in
.win
);
646 wnoutrefresh(sep
.win
);
650 static void check_geometry(void)
652 if (LINES
< theme
.lines_min
|| COLS
< theme
.cols_min
)
653 msg_n_exit(EXIT_FAILURE
, "Error: Terminal (%dx%d) too small"
654 " (need at least %dx%d)\n", COLS
, LINES
,
655 theme
.cols_min
, theme
.lines_min
);
659 * Print stat item #i to curses window
661 static void print_stat_item(int i
)
664 struct stat_item_data d
= theme
.data
[i
];
665 char *c
= stat_content
[i
];
667 if (!curses_active
|| !d
.len
|| !c
)
669 tmp
= make_message("%s%s%s", d
.prefix
, c
, d
.postfix
);
670 wmove(top
.win
, d
.y
* top
.lines
/ 100, d
.x
* COLS
/ 100);
672 wattron(top
.win
, COLOR_PAIR(i
+ 1));
673 align_str(top
.win
, tmp
, d
.len
* COLS
/ 100, d
.align
);
678 static int update_item(int item_num
, char *buf
)
680 free(stat_content
[item_num
]);
681 stat_content
[item_num
] = para_strdup(buf
);
682 print_stat_item(item_num
);
686 static int read_audiod_pipe(int fd
)
689 static int bufsize
, loaded
;
692 if (loaded
>= bufsize
) {
693 if (bufsize
> 1000 * 1000) {
697 bufsize
+= bufsize
+ 1000;
698 buf
= para_realloc(buf
, bufsize
);
700 assert(loaded
< bufsize
);
701 ret
= read(fd
, buf
+ loaded
, bufsize
- loaded
);
705 ret
= for_each_stat_item(buf
, loaded
, update_item
);
712 static void print_all_items(void)
718 FOR_EACH_STATUS_ITEM(i
)
722 static void clear_all_items(void)
726 FOR_EACH_STATUS_ITEM(i
) {
727 free(stat_content
[i
]);
728 stat_content
[i
] = para_strdup("");
732 static void init_colors(void)
737 msg_n_exit(EXIT_FAILURE
, "Error: No color term\n");
739 FOR_EACH_STATUS_ITEM(i
)
740 if (theme
.data
[i
].len
)
741 init_pair(i
+ 1, theme
.data
[i
].fg
, theme
.data
[i
].bg
);
742 init_pair(COLOR_STATUSBAR
, theme
.sb_fg
, theme
.sb_bg
);
743 init_pair(COLOR_COMMAND
, theme
.cmd_fg
, theme
.cmd_bg
);
744 init_pair(COLOR_OUTPUT
, theme
.output_fg
, theme
.output_bg
);
745 init_pair(COLOR_MSG
, theme
.msg_fg
, theme
.msg_bg
);
746 init_pair(COLOR_ERRMSG
, theme
.err_msg_fg
, theme
.err_msg_bg
);
747 init_pair(COLOR_WELCOME
, theme
.welcome_fg
, theme
.welcome_bg
);
748 init_pair(COLOR_SEPARATOR
, theme
.sep_fg
, theme
.sep_bg
);
749 init_pair(COLOR_TOP
, theme
.default_fg
, theme
.default_bg
);
750 init_pair(COLOR_BOT
, theme
.default_fg
, theme
.default_bg
);
754 * (re-)initialize the curses library FIXME: Error checking
756 static void init_curses(void)
759 if (top
.win
&& refresh() == ERR
) { /* refesh is really needed */
760 msg_n_exit(EXIT_FAILURE
, "refresh() failed\n");
763 curs_set(0); /* make cursor invisible, ignore errors */
764 // if (noraw() == ERR);
765 // msg_n_exit(EXIT_FAILURE, "can not place terminal out of "
767 nonl(); /* tell curses not to do NL->CR/NL on output */
768 noecho(); /* don't echo input */
769 cbreak(); /* take input chars one at a time, no wait for \n */
773 init_wins(theme
.top_lines_default
);
775 noecho(); /* don't echo input */
779 static void check_sigchld(void)
784 ret
= para_reap_child(&pid
);
787 if (pid
== cmd_pid
) {
791 goto reap_next_child
;
795 * This sucker modifies its first argument. *handler and *arg are
796 * pointers to 0-terminated strings (inside line). Crap.
798 static int split_key_map(char *line
, char **handler
, char **arg
)
800 if (!(*handler
= strchr(line
+ 1, ':')))
804 if (!(*arg
= strchr(*handler
, ':')))
813 static int check_key_map_args(void)
817 char *tmp
= NULL
, *handler
, *arg
;
819 for (i
= 0; i
< conf
.key_map_given
; ++i
) {
820 s
= conf
.key_map_arg
[i
];
824 tmp
= para_strdup(s
);
825 if (!split_key_map(tmp
, &handler
, &arg
))
827 if (strlen(handler
) != 1)
836 if (find_cmd_byname(arg
) < 0)
846 * React to various signal-related events
848 static void handle_signal(int sig
)
852 msg_n_exit(EXIT_FAILURE
,
853 "only the good die young (caught SIGTERM))\n");
863 PARA_WARNING_LOG("caught SIGINT, reset");
864 /* Nothing to do. SIGINT killed our child which gets noticed
865 * by do_select and resets everything.
869 PARA_NOTICE_LOG("got SIGUSR1, rereading configuration");
878 static int open_audiod_pipe(void)
886 return para_open_audiod_pipe(conf
.stat_cmd_arg
);
890 * This is the core select loop. Besides the (internal) signal
891 * pipe, the following other fds are checked according to the mode:
893 * GETCH_MODE: check stdin, return when key is pressed
895 * COMMAND_MODE: check command_pipe and stdin. Return when a screen full
896 * of output has been read or when other end has closed command pipe or
897 * when any key is pressed.
899 * EXTERNAL_MODE: Check only signal pipe. Used when an external command
900 * is running. During that time curses is disabled. Returns when
903 static int do_select(int mode
)
907 int max_fileno
, cp_numread
= 1;
908 char command_buf
[4096] = "";
909 int cbo
= 0; /* command buf offset */
912 tv
.tv_sec
= conf
.timeout_arg
/ 1000;
913 tv
.tv_usec
= (conf
.timeout_arg
% 1000) * 1000;
914 // ret = refresh_status();
919 audiod_pipe
= open_audiod_pipe();
920 if (audiod_pipe
>= 0)
921 para_fd_set(audiod_pipe
, &rfds
, &max_fileno
);
923 para_fd_set(signal_pipe
, &rfds
, &max_fileno
);
924 /* command pipe only for COMMAND_MODE */
925 if (command_pipe
>= 0 && mode
== COMMAND_MODE
)
926 para_fd_set(command_pipe
, &rfds
, &max_fileno
);
927 ret
= para_select(max_fileno
+ 1, &rfds
, NULL
, &tv
);
929 goto check_return
; /* skip fd checks */
931 if (FD_ISSET(signal_pipe
, &rfds
)) {
932 int sig_nr
= para_next_signal();
934 handle_signal(sig_nr
);
936 /* read command pipe if ready */
937 if (command_pipe
>= 0 && mode
== COMMAND_MODE
&&
938 FD_ISSET(command_pipe
, &rfds
)) {
939 cp_numread
= read(command_pipe
, command_buf
+ cbo
,
940 sizeof(command_buf
) - 1 - cbo
);
945 PARA_ERROR_LOG("read error (%d)", cp_numread
);
950 if (audiod_pipe
>= 0 && FD_ISSET(audiod_pipe
, &rfds
))
951 if (read_audiod_pipe(audiod_pipe
) <= 0) {
955 free(stat_content
[SI_BASENAME
]);
956 stat_content
[SI_BASENAME
] =
957 para_strdup("audiod not running!?");
963 if (cp_numread
<= 0 && !cbo
) /* command complete */
966 cbo
= for_each_line(command_buf
, cbo
,
967 &add_output_line
, NULL
);
971 ret
= wgetch(top
.win
);
972 if (ret
!= ERR
&& ret
!= KEY_RESIZE
) {
978 kill(cmd_pid
, SIGTERM
);
983 ret
= wgetch(top
.win
);
984 if (ret
!= ERR
&& ret
!= KEY_RESIZE
)
997 * read from command pipe and print data to bot window
999 static int send_output(void)
1003 if (command_pipe
< 0)
1005 ret
= mark_fd_nonblocking(command_pipe
);
1007 close(command_pipe
);
1010 if (do_select(COMMAND_MODE
) >= 0)
1011 PARA_INFO_LOG("command complete");
1013 PARA_NOTICE_LOG("command aborted");
1014 print_in_bar(COLOR_MSG
, " ");
1018 static int client_cmd_cmdline(char *cmd
)
1020 int ret
, fds
[3] = {0, 1, 0};
1021 char *c
= make_message(BINDIR
"/para_client -- %s", cmd
);
1023 outputf(COLOR_COMMAND
, "%s", c
);
1024 print_in_bar(COLOR_MSG
, "executing client command, hit any key to abort\n");
1025 ret
= para_exec_cmdline_pid(&cmd_pid
, c
, fds
);
1029 command_pipe
= fds
[1];
1030 return send_output();
1034 * exec command and print output to bot win
1036 static int display_cmd(char *cmd
)
1038 int fds
[3] = {0, 1, 0};
1040 print_in_bar(COLOR_MSG
, "executing display command, hit any key to abort");
1041 outputf(COLOR_COMMAND
, "%s", cmd
);
1042 if (para_exec_cmdline_pid(&cmd_pid
, cmd
, fds
) < 0)
1044 command_pipe
= fds
[1];
1045 return send_output();
1049 * shutdown curses and stat pipe before executing external commands
1051 static int external_cmd(char *cmd
)
1053 int fds
[3] = {-1, -1, -1};
1058 para_exec_cmdline_pid(&cmd_pid
, cmd
, fds
);
1060 do_select(EXTERNAL_MODE
);
1065 static void print_scroll_msg(void)
1067 unsigned lines_total
, filled
= ringbuffer_filled(bot_win_rb
);
1068 int first_rbe
= first_visible_rbe(&lines_total
);
1069 print_in_bar(COLOR_MSG
, "scrolled view: %d-%d/%d\n", filled
- first_rbe
,
1070 filled
- scroll_position
, ringbuffer_filled(bot_win_rb
));
1073 static void com_page_down(void)
1076 int i
= scroll_position
;
1077 while (lines
< bot
.lines
&& --i
> 0) {
1078 struct rb_entry
*rbe
= ringbuffer_get(bot_win_rb
, i
);
1081 lines
+= NUM_LINES(strlen(rbe
->msg
));
1084 scroll_position
= i
;
1089 print_in_bar(COLOR_ERRMSG
, "bottom of buffer is shown\n");
1092 static void com_page_up(void)
1095 int fvr
= first_visible_rbe(&lines
);
1097 if (fvr
< 0 || fvr
+ 1 >= ringbuffer_filled(bot_win_rb
)) {
1098 print_in_bar(COLOR_ERRMSG
, "top of buffer is shown\n");
1101 scroll_position
= fvr
+ 1;
1102 for (; scroll_position
> 0; scroll_position
--) {
1103 first_visible_rbe(&lines
);
1104 if (lines
== bot
.lines
)
1111 static void com_scroll_down(void)
1113 struct rb_entry
*rbe
;
1116 if (!scroll_position
) {
1117 print_in_bar(COLOR_ERRMSG
, "bottom of buffer is shown\n");
1121 rbe
= ringbuffer_get(bot_win_rb
, scroll_position
);
1122 rbe_lines
= NUM_LINES(rbe
->len
);
1123 wscrl(bot
.win
, rbe_lines
);
1124 wmove(bot
.win
, bot
.lines
- rbe_lines
, 0);
1125 wattron(bot
.win
, COLOR_PAIR(rbe
->color
));
1126 waddstr(bot
.win
, rbe
->msg
);
1131 static void com_scroll_up(void)
1133 struct rb_entry
*rbe
= NULL
;
1135 int i
, first_rbe
, num_scroll
;
1137 /* the entry that is going to vanish */
1138 rbe
= ringbuffer_get(bot_win_rb
, scroll_position
);
1141 num_scroll
= NUM_LINES(rbe
->len
);
1142 first_rbe
= first_visible_rbe(&lines
);
1143 if (first_rbe
< 0 || (first_rbe
== ringbuffer_filled(bot_win_rb
) - 1))
1146 wscrl(bot
.win
, -num_scroll
);
1147 i
= draw_top_rbe(&lines
);
1150 while (i
> 0 && lines
< num_scroll
) {
1152 rbe
= ringbuffer_get(bot_win_rb
, --i
);
1155 rbe_lines
= NUM_LINES(rbe
->len
);
1157 // fprintf(stderr, "msg: %s\n", rbe->msg);
1158 wattron(bot
.win
, COLOR_PAIR(rbe
->color
));
1159 waddstr(bot
.win
, "\n");
1160 waddstr(bot
.win
, rbe
->msg
);
1169 print_in_bar(COLOR_ERRMSG
, "top of buffer is shown\n");
1172 static void com_ll_decr(void)
1174 if (loglevel
<= LL_DEBUG
) {
1175 print_in_bar(COLOR_ERRMSG
,
1176 "loglevel already at maximal verbosity\n");
1180 print_in_bar(COLOR_MSG
, "loglevel set to %d\n", loglevel
);
1183 static void com_ll_incr(void)
1185 if (loglevel
>= LL_EMERG
) {
1186 print_in_bar(COLOR_ERRMSG
,
1187 "loglevel already at minimal verbosity\n");
1191 print_in_bar(COLOR_MSG
, "loglevel set to %d\n", loglevel
);
1195 * reread configuration, terminate on errors
1197 static void com_reread_conf(void)
1199 char *cf
=configfile_exists();
1200 struct gui_cmdline_parser_params params
= {
1203 .check_required
= 0,
1204 .check_ambiguity
= 0
1208 PARA_WARNING_LOG("there is no configuration to read");
1211 PARA_INFO_LOG("rereading command line options and config file");
1212 gui_cmdline_parser(_argc
, _argv
, &conf
);
1213 gui_cmdline_parser_config_file(cf
, &conf
, ¶ms
);
1214 PARA_NOTICE_LOG("config file reloaded");
1215 if (check_key_map_args() < 0)
1216 finish(EXIT_FAILURE
);
1219 static void com_help(void)
1223 for (i
= 0; i
< conf
.key_map_given
; ++i
) {
1224 char *handler
, *arg
, *tmp
= para_strdup(conf
.key_map_arg
[i
]);
1225 const char *handler_text
= "???", *desc
= NULL
;
1227 if (!split_key_map(tmp
, &handler
, &arg
)) {
1233 handler_text
= "internal";
1234 desc
= command_list
[find_cmd_byname(arg
)].description
;
1236 case 'x': handler_text
= "external"; break;
1237 case 'd': handler_text
= "display "; break;
1238 case 'p': handler_text
= "para "; break;
1240 outputf(COLOR_MSG
, "%s\t%s\t%s%s\t%s", tmp
, handler_text
, arg
,
1241 strlen(arg
) < 8? "\t" : "",
1245 for (i
= 0; command_list
[i
].handler
; i
++) {
1246 struct gui_command gc
= command_list
[i
];
1248 outputf(COLOR_MSG
, "%s\tinternal\t%s\t%s%s", gc
.key
, gc
.name
,
1249 strlen(gc
.name
) < 8? "\t" : "",
1252 print_in_bar(COLOR_MSG
, "try \"para_gui -h\" or \"para_client help\" "
1256 static void com_shrink_top_win(void)
1258 if (top
.lines
<= theme
.top_lines_min
) {
1259 PARA_WARNING_LOG("can not decrease top window");
1262 init_wins(top
.lines
- 1);
1265 print_in_bar(COLOR_MSG
, "%s", "decreased top window");
1268 static void com_enlarge_top_win(void)
1270 if (bot
.lines
< 3) {
1271 PARA_WARNING_LOG("can not increase top window");
1274 init_wins(top
.lines
+ 1);
1277 print_in_bar(COLOR_MSG
, "increased top window");
1280 static void com_version(void)
1282 print_in_bar(COLOR_MSG
, "para_gui " PACKAGE_VERSION
" \""
1286 __noreturn
static void com_quit(void)
1291 static void com_refresh(void)
1297 static void change_theme(int next
)
1303 /* This seems to be needed twice, why? */
1306 PARA_NOTICE_LOG("new theme: %s", theme
.name
);
1309 static void com_next_theme(void)
1314 static void com_prev_theme(void)
1320 static void handle_command(int c
)
1324 /* first check user's key bindings */
1325 for (i
= 0; i
< conf
.key_map_given
; ++i
) {
1326 char tmp
[MAXLINE
], *handler
, *arg
;
1328 strcpy(tmp
, conf
.key_map_arg
[i
]);
1329 if (!split_key_map(tmp
, &handler
, &arg
))
1331 if (!strcmp(tmp
, km_keyname(c
))) {
1332 if (*handler
== 'd') {
1336 if (*handler
== 'x') {
1340 if (*handler
== 'p') {
1341 client_cmd_cmdline(arg
);
1344 if (*handler
== 'i') {
1345 int num
= find_cmd_byname(arg
);
1347 command_list
[num
].handler();
1352 /* not found, check internal key bindings */
1353 for (i
= 0; command_list
[i
].handler
; i
++) {
1354 if (!strcmp(km_keyname(c
), command_list
[i
].key
)) {
1355 command_list
[i
].handler();
1359 print_in_bar(COLOR_ERRMSG
, "key '%s' is not bound, press ? for help",
1363 int main(int argc
, char *argv
[])
1371 if (gui_cmdline_parser(argc
, argv
, &conf
)) {
1372 fprintf(stderr
, "parse error while reading command line\n");
1375 HANDLE_VERSION_FLAG("gui", conf
);
1376 init_theme(0, &theme
);
1377 top
.lines
= theme
.top_lines_default
;
1378 if (check_key_map_args() < 0) {
1379 fprintf(stderr
, "invalid key map\n");
1382 cf
= configfile_exists();
1383 if (!cf
&& conf
.config_file_given
) {
1384 fprintf(stderr
, "can not read config file %s\n",
1385 conf
.config_file_arg
);
1389 struct gui_cmdline_parser_params params
= {
1392 .check_required
= 0,
1393 .check_ambiguity
= 0
1395 gui_cmdline_parser_config_file(cf
, &conf
, ¶ms
);
1397 loglevel
= get_loglevel_by_name(conf
.loglevel_arg
);
1398 if (check_key_map_args() < 0) {
1399 fprintf(stderr
, "invalid key map in config file\n");
1402 setup_signal_handling();
1403 bot_win_rb
= ringbuffer_new(RINGBUFFER_SIZE
);
1404 initscr(); /* needed only once, always successful */
1409 ret
= do_select(GETCH_MODE
);
1412 print_in_bar(COLOR_MSG
, " ");
1413 handle_command(ret
);