2 * Copyright (C) 1998-2010 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. */
11 #include <sys/types.h>
15 #include "gui.cmdline.h"
19 #include "ringbuffer.h"
26 /** define the array of error lists needed by para_gui */
28 static char *stat_content
[NUM_STAT_ITEMS
];
30 #define STANDARD_STATUS_BAR "para_gui " PACKAGE_VERSION " (hit ? for help)"
32 static int signal_pipe
;
34 static struct win_data
{
40 } top
, bot
, sb
, in
, sep
;
42 #define RINGBUFFER_SIZE 512
48 static struct ringbuffer
*bot_win_rb
;
49 #define NUM_LINES(len) (1 + (len) / bot.cols)
51 static unsigned scroll_position
;
53 static int cmd_died
, curses_active
;
56 static int command_pipe
= -1;
57 static int stat_pipe
= -1;
58 static struct gui_args_info conf
;
60 enum {GETCH_MODE
, COMMAND_MODE
, EXTERNAL_MODE
};
63 #define COLOR_STATUSBAR 52
64 #define COLOR_COMMAND 53
65 #define COLOR_OUTPUT 54
67 #define COLOR_ERRMSG 56
68 #define COLOR_WELCOME 57
69 #define COLOR_SEPARATOR 58
76 const char *description
;
77 void (*handler
)(void);
83 char postfix
[MAXLINE
];
89 char content
[MAXLINE
];
92 static struct gui_theme theme
;
97 static void com_help(void);
98 static void com_reread_conf(void);
99 static void com_enlarge_top_win(void);
100 static void com_shrink_top_win(void);
101 static void com_version(void);
102 static void com_quit(void);
103 static void com_refresh(void);
104 static void com_ll_incr(void);
105 static void com_ll_decr(void);
106 static void com_prev_theme(void);
107 static void com_next_theme(void);
108 static void com_scroll_up(void);
109 static void com_scroll_down(void);
110 static void com_page_up(void);
111 static void com_page_down(void);
113 static struct gui_command command_list
[] = {
117 .description
= "print help",
121 .name
= "enlarge_win",
122 .description
= "enlarge the top window",
123 .handler
= com_enlarge_top_win
126 .name
= "shrink_win",
127 .description
= "shrink the top window",
128 .handler
= com_shrink_top_win
131 .name
= "reread_conf",
132 .description
= "reread configuration file",
133 .handler
= com_reread_conf
137 .description
= "exit para_gui",
142 .description
= "redraw the screen",
143 .handler
= com_refresh
146 .name
= "next_theme",
147 .description
= "switch to next theme",
148 .handler
= com_next_theme
151 .name
= "prev_theme",
152 .description
= "switch to previous stream",
153 .handler
= com_prev_theme
157 .description
= "increase loglevel (decreases verbosity)",
158 .handler
= com_ll_incr
162 .description
= "decrease loglevel (increases verbosity)",
163 .handler
= com_ll_decr
167 .description
= "show the para_gui version",
168 .handler
= com_version
172 .description
= "scroll up one line",
173 .handler
= com_scroll_up
176 .name
= "scroll_down",
177 .description
= "scroll down one line",
178 .handler
= com_scroll_down
182 .description
= "scroll up one page",
183 .handler
= com_page_up
187 .description
= "scroll down one page",
188 .handler
= com_page_down
194 static int find_cmd_byname(char *name
)
198 for (i
= 0; command_list
[i
].handler
; i
++)
199 if (!strcmp(command_list
[i
].name
, name
))
204 /* taken from mutt */
205 static char *km_keyname(int c
)
210 sprintf(buf
, "<up>");
214 sprintf(buf
, "<down>");
218 sprintf(buf
, "<left>");
221 if (c
== KEY_RIGHT
) {
222 sprintf(buf
, "<right>");
225 if (c
== KEY_NPAGE
) {
226 sprintf(buf
, "<npage>");
229 if (c
== KEY_PPAGE
) {
230 sprintf(buf
, "<ppage>");
233 if (c
< 256 && c
> -128 && iscntrl((unsigned char) c
)) {
238 buf
[1] = (c
+ '@') & 0x7f;
241 snprintf(buf
, sizeof(buf
), "\\%d%d%d", c
>> 6,
242 (c
>> 3) & 7, c
& 7);
243 } else if (c
>= KEY_F0
&& c
< KEY_F(256))
244 sprintf(buf
, "<F%d>", c
- KEY_F0
);
246 snprintf(buf
, sizeof(buf
), "%c", (unsigned char) c
);
248 snprintf(buf
, sizeof(buf
), "\\x%hx", (unsigned short) c
);
252 static char *configfile_exists(void)
254 static char *config_file
;
257 if (!conf
.config_file_given
) {
259 char *home
= para_homedir();
260 config_file
= make_message("%s/.paraslash/gui.conf",
266 tmp
= conf
.config_file_arg
;
267 return file_exists(tmp
)? tmp
: NULL
;
271 * print num spaces to curses window
273 static void add_spaces(WINDOW
* win
, unsigned int num
)
282 * print aligned string to curses window. This function always prints
285 static int align_str(WINDOW
* win
, char *str
, unsigned int len
,
288 int i
, num
; /* of spaces */
292 num
= len
- strlen(str
);
297 /* replace newlines by spaces */
298 for (i
= 0; i
< len
&& str
[i
]; i
++) {
304 add_spaces(win
, num
);
305 } else if (align
== RIGHT
) {
306 add_spaces(win
, num
);
309 add_spaces(win
, num
/ 2);
310 waddstr(win
, str
[0]? str
: "");
311 add_spaces(win
, num
- num
/ 2);
316 __printf_2_3
static void print_in_bar(int color
, const char *fmt
,...)
322 wattron(in
.win
, COLOR_PAIR(color
));
323 PARA_VSPRINTF(fmt
, msg
);
325 align_str(in
.win
, msg
, sb
.cols
, LEFT
);
331 * update the status bar
333 static void print_status_bar(void)
339 tmp
= para_strdup(STANDARD_STATUS_BAR
);
341 align_str(sb
.win
, tmp
, sb
.cols
, CENTER
);
347 * get the number of the oldest rbe that is (partially) visible. On return,
348 * lines contains the sum of the number of lines of all visable entries. If the
349 * first one is only partially visible, lines is greater than bot.lines.
351 static int first_visible_rbe(unsigned *lines
)
355 for (i
= scroll_position
; i
< RINGBUFFER_SIZE
; i
++) {
356 struct rb_entry
*rbe
= ringbuffer_get(bot_win_rb
, i
);
360 // fprintf(stderr, "found: %s\n", rbe->msg);
361 rbe_lines
= NUM_LINES(rbe
->len
);
362 if (rbe_lines
> bot
.lines
)
365 if (*lines
>= bot
.lines
)
368 return RINGBUFFER_SIZE
- 1;
371 static int draw_top_rbe(unsigned *lines
)
374 int offset
, fvr
= first_visible_rbe(lines
);
375 struct rb_entry
*rbe
;
379 wmove(bot
.win
, 0, 0);
380 rbe
= ringbuffer_get(bot_win_rb
, fvr
);
383 /* first rbe might be only partially visible */
384 offset
= (*lines
- bot
.lines
) * bot
.cols
;
385 len
= strlen(rbe
->msg
);
386 if (offset
< 0 || len
< offset
)
388 wattron(bot
.win
, COLOR_PAIR(rbe
->color
));
389 waddstr(bot
.win
, rbe
->msg
+ offset
);
390 *lines
= NUM_LINES(len
- offset
);
394 static void redraw_bot_win(void)
399 wmove(bot
.win
, 0, 0);
401 i
= draw_top_rbe(&lines
);
404 while (i
> 0 && lines
< bot
.lines
) {
405 struct rb_entry
*rbe
= ringbuffer_get(bot_win_rb
, --i
);
408 waddstr(bot
.win
, "\n");
411 lines
+= NUM_LINES(rbe
->len
);
412 wattron(bot
.win
, COLOR_PAIR(rbe
->color
));
413 waddstr(bot
.win
, "\n");
414 waddstr(bot
.win
, rbe
->msg
);
420 static void rb_add_entry(int color
, char *msg
)
422 struct rb_entry
*old
, *new = para_malloc(sizeof(struct rb_entry
));
425 new->len
= strlen(msg
);
427 old
= ringbuffer_add(bot_win_rb
, new);
428 // fprintf(stderr, "added: %s\n", new->msg);
433 if (scroll_position
) {
434 /* discard current scrolling, like xterm does */
439 wattron(bot
.win
, COLOR_PAIR(color
));
440 getyx(bot
.win
, y
, x
);
442 waddstr(bot
.win
, "\n");
443 waddstr(bot
.win
, msg
);
447 * print formated output to bot win and refresh
449 __printf_2_3
static void outputf(int color
, const char* fmt
,...)
455 PARA_VSPRINTF(fmt
, msg
);
456 rb_add_entry(color
, msg
);
460 static int add_output_line(char *line
, __a_unused
void *data
)
464 rb_add_entry(COLOR_OUTPUT
, para_strdup(line
));
470 __printf_2_3
void para_log(int ll
, const char *fmt
,...)
475 if (ll
< loglevel
|| !curses_active
)
484 color
= COLOR_ERRMSG
;
486 PARA_VSPRINTF(fmt
, msg
);
488 rb_add_entry(color
, msg
);
492 static void setup_signal_handling(void)
494 signal_pipe
= para_signal_init();
495 para_install_sighandler(SIGINT
);
496 para_install_sighandler(SIGTERM
);
497 para_install_sighandler(SIGCHLD
);
498 para_install_sighandler(SIGWINCH
);
499 para_install_sighandler(SIGUSR1
);
500 para_sigaction(SIGHUP
, SIG_IGN
);
503 __noreturn
static void do_exit(int ret
)
505 para_sigaction(SIGTERM
, SIG_IGN
);
510 static void shutdown_curses(void)
519 __noreturn
static void finish(int ret
)
526 * exit curses and print given message to stdout/stderr
528 __noreturn __printf_2_3
static void msg_n_exit(int ret
, const char* fmt
, ...)
531 FILE *outfd
= ret
? stderr
: stdout
;
535 vfprintf(outfd
, fmt
, argp
);
540 static void print_welcome(void)
542 if (loglevel
> LL_NOTICE
)
544 outputf(COLOR_WELCOME
, "Welcome to para_gui " PACKAGE_VERSION
545 " \"" CODENAME
"\". Theme: %s", theme
.name
);
552 static void init_wins(int top_lines
)
556 top
.lines
= top_lines
;
561 bot
.lines
= LINES
- top
.lines
- 3;
563 bot
.begy
= top
.lines
+ 1;
578 sep
.begy
= top
.lines
;
581 assume_default_colors(theme
.default_fg
, theme
.default_bg
);
583 mvwin(top
.win
, top
.begy
, top
.begx
);
584 wresize(top
.win
, top
.lines
, top
.cols
);
586 mvwin(sb
.win
, sb
.begy
, sb
.begx
);
587 wresize(sb
.win
, sb
.lines
, sb
.cols
);
589 mvwin(sep
.win
, sep
.begy
, sep
.begx
);
590 wresize(sep
.win
, sep
.lines
, sep
.cols
);
592 mvwin(bot
.win
, bot
.begy
, bot
.begx
);
593 wresize(bot
.win
, bot
.lines
, bot
.cols
);
595 mvwin(in
.win
, in
.begy
, in
.begx
);
596 wresize(in
.win
, in
.lines
, in
.cols
);
598 sep
.win
= newwin(sep
.lines
, sep
.cols
, sep
.begy
, sep
.begx
);
599 top
.win
= newwin(top
.lines
, top
.cols
, top
.begy
, top
.begx
);
600 bot
.win
= newwin(bot
.lines
, bot
.cols
, bot
.begy
, bot
.begx
);
601 sb
.win
= newwin(sb
.lines
, sb
.cols
, sb
.begy
, sb
.begx
);
602 in
.win
= newwin(in
.lines
, in
.cols
, in
.begy
, in
.begx
);
603 if (!top
.win
|| !bot
.win
|| !sb
.win
|| !in
.win
|| !sep
.win
)
604 msg_n_exit(1, "Error: Cannot create curses windows\n");
608 scrollok(bot
.win
, 1);
609 wattron(sb
.win
, COLOR_PAIR(COLOR_STATUSBAR
));
610 wattron(sep
.win
, COLOR_PAIR(COLOR_SEPARATOR
));
611 wattron(bot
.win
, COLOR_PAIR(COLOR_BOT
));
612 wattron(top
.win
, COLOR_PAIR(COLOR_TOP
));
624 wmove(sep
.win
, 0, 0);
625 for (i
= 1; i
<= COLS
; i
++)
626 waddstr(sep
.win
, theme
.sep_str
);
629 wnoutrefresh(top
.win
);
630 wnoutrefresh(bot
.win
);
631 //wnoutrefresh(sb.win);
633 wnoutrefresh(in
.win
);
634 wnoutrefresh(sep
.win
);
638 static void check_geometry(void)
640 if (LINES
< theme
.lines_min
|| COLS
< theme
.cols_min
)
641 msg_n_exit(EXIT_FAILURE
, "Error: Terminal (%dx%d) too small"
642 " (need at least %dx%d)\n", COLS
, LINES
,
643 theme
.cols_min
, theme
.lines_min
);
647 * Print stat item #i to curses window
649 static void print_stat_item(int i
)
652 struct stat_item_data d
= theme
.data
[i
];
653 char *c
= stat_content
[i
];
655 if (!curses_active
|| !d
.len
|| !c
)
657 tmp
= make_message("%s%s%s", d
.prefix
, c
, d
.postfix
);
658 wmove(top
.win
, d
.y
* top
.lines
/ 100, d
.x
* COLS
/ 100);
660 wattron(top
.win
, COLOR_PAIR(i
+ 1));
661 align_str(top
.win
, tmp
, d
.len
* COLS
/ 100, d
.align
);
666 static int update_item(int item_num
, char *buf
)
668 char **c
= stat_content
+ item_num
;
675 *c
= para_strdup("(artist tag not set)");
678 *c
= para_strdup("(title tag not set)");
681 *c
= para_strdup("????");
684 *c
= para_strdup("(album tag not set)");
687 *c
= para_strdup("(comment tag not set)");
691 *c
= para_strdup(buf
);
693 print_stat_item(item_num
);
697 static int read_stat_pipe(fd_set
*rfds
)
700 static int bufsize
, loaded
;
706 if (loaded
>= bufsize
) {
707 if (bufsize
> 1000 * 1000) {
711 bufsize
+= bufsize
+ 1000;
712 buf
= para_realloc(buf
, bufsize
);
714 assert(loaded
< bufsize
);
715 ret
= read_nonblock(stat_pipe
, buf
+ loaded
, bufsize
- loaded
,
718 ret2
= for_each_stat_item(buf
, loaded
, update_item
);
719 if (ret
< 0 || ret2
< 0) {
721 return ret2
< 0? ret2
: ret
;
723 sz
= ret2
; /* what is left */
724 if (sz
> 0 && sz
< loaded
)
725 memmove(buf
, buf
+ loaded
- sz
, sz
);
730 static void print_all_items(void)
736 FOR_EACH_STATUS_ITEM(i
)
740 static void clear_all_items(void)
744 FOR_EACH_STATUS_ITEM(i
) {
745 free(stat_content
[i
]);
746 stat_content
[i
] = para_strdup("");
750 static void init_colors(void)
755 msg_n_exit(EXIT_FAILURE
, "Error: No color term\n");
757 FOR_EACH_STATUS_ITEM(i
)
758 if (theme
.data
[i
].len
)
759 init_pair(i
+ 1, theme
.data
[i
].fg
, theme
.data
[i
].bg
);
760 init_pair(COLOR_STATUSBAR
, theme
.sb_fg
, theme
.sb_bg
);
761 init_pair(COLOR_COMMAND
, theme
.cmd_fg
, theme
.cmd_bg
);
762 init_pair(COLOR_OUTPUT
, theme
.output_fg
, theme
.output_bg
);
763 init_pair(COLOR_MSG
, theme
.msg_fg
, theme
.msg_bg
);
764 init_pair(COLOR_ERRMSG
, theme
.err_msg_fg
, theme
.err_msg_bg
);
765 init_pair(COLOR_WELCOME
, theme
.welcome_fg
, theme
.welcome_bg
);
766 init_pair(COLOR_SEPARATOR
, theme
.sep_fg
, theme
.sep_bg
);
767 init_pair(COLOR_TOP
, theme
.default_fg
, theme
.default_bg
);
768 init_pair(COLOR_BOT
, theme
.default_fg
, theme
.default_bg
);
772 * (re-)initialize the curses library FIXME: Error checking
774 static void init_curses(void)
777 if (top
.win
&& refresh() == ERR
) { /* refesh is really needed */
778 msg_n_exit(EXIT_FAILURE
, "refresh() failed\n");
781 curs_set(0); /* make cursor invisible, ignore errors */
782 // if (noraw() == ERR);
783 // msg_n_exit(EXIT_FAILURE, "can not place terminal out of "
785 nonl(); /* tell curses not to do NL->CR/NL on output */
786 noecho(); /* don't echo input */
787 cbreak(); /* take input chars one at a time, no wait for \n */
791 init_wins(theme
.top_lines_default
);
793 noecho(); /* don't echo input */
797 static void check_sigchld(void)
802 ret
= para_reap_child(&pid
);
805 if (pid
== cmd_pid
) {
809 goto reap_next_child
;
813 * This sucker modifies its first argument. *handler and *arg are
814 * pointers to 0-terminated strings (inside line). Crap.
816 static int split_key_map(char *line
, char **handler
, char **arg
)
818 if (!(*handler
= strchr(line
+ 1, ':')))
822 if (!(*arg
= strchr(*handler
, ':')))
831 static int check_key_map_args(void)
835 char *tmp
= NULL
, *handler
, *arg
;
837 for (i
= 0; i
< conf
.key_map_given
; ++i
) {
838 s
= conf
.key_map_arg
[i
];
842 tmp
= para_strdup(s
);
843 if (!split_key_map(tmp
, &handler
, &arg
))
845 if (strlen(handler
) != 1)
854 if (find_cmd_byname(arg
) < 0)
864 * React to various signal-related events
866 static void handle_signal(int sig
)
870 msg_n_exit(EXIT_FAILURE
,
871 "only the good die young (caught SIGTERM))\n");
881 PARA_WARNING_LOG("caught SIGINT, reset");
882 /* Nothing to do. SIGINT killed our child which gets noticed
883 * by do_select and resets everything.
887 PARA_NOTICE_LOG("got SIGUSR1, rereading configuration");
896 static int open_stat_pipe(void)
899 int ret
, fds
[3] = {0, 1, 0};
906 ret
= para_exec_cmdline_pid(&pid
, conf
.stat_cmd_arg
, fds
);
909 ret
= mark_fd_nonblocking(fds
[1]);
917 * This is the core select loop. Besides the (internal) signal
918 * pipe, the following other fds are checked according to the mode:
920 * GETCH_MODE: check stdin, return when key is pressed
922 * COMMAND_MODE: check command_pipe and stdin. Return when a screen full
923 * of output has been read or when other end has closed command pipe or
924 * when any key is pressed.
926 * EXTERNAL_MODE: Check only signal pipe. Used when an external command
927 * is running. During that time curses is disabled. Returns when
930 static int do_select(int mode
)
935 char command_buf
[4096] = "";
936 int cbo
= 0; /* command buf offset */
939 tv
.tv_sec
= conf
.timeout_arg
/ 1000;
940 tv
.tv_usec
= (conf
.timeout_arg
% 1000) * 1000;
941 // ret = refresh_status();
945 stat_pipe
= open_stat_pipe();
947 para_fd_set(stat_pipe
, &rfds
, &max_fileno
);
949 para_fd_set(signal_pipe
, &rfds
, &max_fileno
);
950 /* command pipe only for COMMAND_MODE */
951 if (command_pipe
>= 0 && mode
== COMMAND_MODE
)
952 para_fd_set(command_pipe
, &rfds
, &max_fileno
);
953 ret
= para_select(max_fileno
+ 1, &rfds
, NULL
, &tv
);
955 goto check_return
; /* skip fd checks */
957 ret
= para_next_signal(&rfds
);
960 /* read command pipe if ready */
961 if (command_pipe
>= 0 && mode
== COMMAND_MODE
) {
963 ret
= read_nonblock(command_pipe
, command_buf
+ cbo
,
964 sizeof(command_buf
) - 1 - cbo
, &rfds
, &sz
);
967 cbo
= for_each_line(command_buf
, cbo
, &add_output_line
, NULL
);
971 PARA_NOTICE_LOG("closing command pipe: %s",
972 para_strerror(-ret
));
978 ret
= read_stat_pipe(&rfds
);
980 PARA_NOTICE_LOG("closing stat pipe: %s\n", para_strerror(-ret
));
984 free(stat_content
[SI_BASENAME
]);
985 stat_content
[SI_BASENAME
] =
986 para_strdup("stat command terminated!?");
992 ret
= wgetch(top
.win
);
993 if (ret
!= ERR
&& ret
!= KEY_RESIZE
) {
999 kill(cmd_pid
, SIGTERM
);
1004 ret
= wgetch(top
.win
);
1005 if (ret
!= ERR
&& ret
!= KEY_RESIZE
)
1018 * read from command pipe and print data to bot window
1020 static int send_output(void)
1024 if (command_pipe
< 0)
1026 ret
= mark_fd_nonblocking(command_pipe
);
1028 close(command_pipe
);
1031 if (do_select(COMMAND_MODE
) >= 0)
1032 PARA_INFO_LOG("command complete");
1034 PARA_NOTICE_LOG("command aborted");
1035 print_in_bar(COLOR_MSG
, " ");
1039 static int client_cmd_cmdline(char *cmd
)
1041 int ret
, fds
[3] = {0, 1, 0};
1042 char *c
= make_message(BINDIR
"/para_client -- %s", cmd
);
1044 outputf(COLOR_COMMAND
, "%s", c
);
1045 print_in_bar(COLOR_MSG
, "executing client command, hit any key to abort\n");
1046 ret
= para_exec_cmdline_pid(&cmd_pid
, c
, fds
);
1050 command_pipe
= fds
[1];
1051 return send_output();
1055 * exec command and print output to bot win
1057 static int display_cmd(char *cmd
)
1059 int fds
[3] = {0, 1, 0};
1061 print_in_bar(COLOR_MSG
, "executing display command, hit any key to abort");
1062 outputf(COLOR_COMMAND
, "%s", cmd
);
1063 if (para_exec_cmdline_pid(&cmd_pid
, cmd
, fds
) < 0)
1065 command_pipe
= fds
[1];
1066 return send_output();
1070 * shutdown curses and stat pipe before executing external commands
1072 static int external_cmd(char *cmd
)
1074 int fds
[3] = {-1, -1, -1};
1079 para_exec_cmdline_pid(&cmd_pid
, cmd
, fds
);
1081 do_select(EXTERNAL_MODE
);
1086 static void print_scroll_msg(void)
1088 unsigned lines_total
, filled
= ringbuffer_filled(bot_win_rb
);
1089 int first_rbe
= first_visible_rbe(&lines_total
);
1090 print_in_bar(COLOR_MSG
, "scrolled view: %d-%d/%d\n", filled
- first_rbe
,
1091 filled
- scroll_position
, ringbuffer_filled(bot_win_rb
));
1094 static void com_page_down(void)
1097 int i
= scroll_position
;
1098 while (lines
< bot
.lines
&& --i
> 0) {
1099 struct rb_entry
*rbe
= ringbuffer_get(bot_win_rb
, i
);
1102 lines
+= NUM_LINES(strlen(rbe
->msg
));
1105 scroll_position
= i
;
1110 print_in_bar(COLOR_ERRMSG
, "bottom of buffer is shown\n");
1113 static void com_page_up(void)
1116 int fvr
= first_visible_rbe(&lines
);
1118 if (fvr
< 0 || fvr
+ 1 >= ringbuffer_filled(bot_win_rb
)) {
1119 print_in_bar(COLOR_ERRMSG
, "top of buffer is shown\n");
1122 scroll_position
= fvr
+ 1;
1123 for (; scroll_position
> 0; scroll_position
--) {
1124 first_visible_rbe(&lines
);
1125 if (lines
== bot
.lines
)
1132 static void com_scroll_down(void)
1134 struct rb_entry
*rbe
;
1137 if (!scroll_position
) {
1138 print_in_bar(COLOR_ERRMSG
, "bottom of buffer is shown\n");
1142 rbe
= ringbuffer_get(bot_win_rb
, scroll_position
);
1143 rbe_lines
= NUM_LINES(rbe
->len
);
1144 wscrl(bot
.win
, rbe_lines
);
1145 wmove(bot
.win
, bot
.lines
- rbe_lines
, 0);
1146 wattron(bot
.win
, COLOR_PAIR(rbe
->color
));
1147 waddstr(bot
.win
, rbe
->msg
);
1152 static void com_scroll_up(void)
1154 struct rb_entry
*rbe
= NULL
;
1156 int i
, first_rbe
, num_scroll
;
1158 /* the entry that is going to vanish */
1159 rbe
= ringbuffer_get(bot_win_rb
, scroll_position
);
1162 num_scroll
= NUM_LINES(rbe
->len
);
1163 first_rbe
= first_visible_rbe(&lines
);
1164 if (first_rbe
< 0 || (first_rbe
== ringbuffer_filled(bot_win_rb
) - 1))
1167 wscrl(bot
.win
, -num_scroll
);
1168 i
= draw_top_rbe(&lines
);
1171 while (i
> 0 && lines
< num_scroll
) {
1173 rbe
= ringbuffer_get(bot_win_rb
, --i
);
1176 rbe_lines
= NUM_LINES(rbe
->len
);
1178 // fprintf(stderr, "msg: %s\n", rbe->msg);
1179 wattron(bot
.win
, COLOR_PAIR(rbe
->color
));
1180 waddstr(bot
.win
, "\n");
1181 waddstr(bot
.win
, rbe
->msg
);
1190 print_in_bar(COLOR_ERRMSG
, "top of buffer is shown\n");
1193 static void com_ll_decr(void)
1195 if (loglevel
<= LL_DEBUG
) {
1196 print_in_bar(COLOR_ERRMSG
,
1197 "loglevel already at maximal verbosity\n");
1201 print_in_bar(COLOR_MSG
, "loglevel set to %d\n", loglevel
);
1204 static void com_ll_incr(void)
1206 if (loglevel
>= LL_EMERG
) {
1207 print_in_bar(COLOR_ERRMSG
,
1208 "loglevel already at minimal verbosity\n");
1212 print_in_bar(COLOR_MSG
, "loglevel set to %d\n", loglevel
);
1216 * reread configuration, terminate on errors
1218 static void com_reread_conf(void)
1220 char *cf
=configfile_exists();
1221 struct gui_cmdline_parser_params params
= {
1224 .check_required
= 0,
1225 .check_ambiguity
= 0
1229 PARA_WARNING_LOG("there is no configuration to read");
1232 PARA_INFO_LOG("rereading command line options and config file");
1233 gui_cmdline_parser(_argc
, _argv
, &conf
);
1234 gui_cmdline_parser_config_file(cf
, &conf
, ¶ms
);
1235 PARA_NOTICE_LOG("config file reloaded");
1236 if (check_key_map_args() < 0)
1237 finish(EXIT_FAILURE
);
1240 static void com_help(void)
1244 for (i
= 0; i
< conf
.key_map_given
; ++i
) {
1245 char *handler
, *arg
, *tmp
= para_strdup(conf
.key_map_arg
[i
]);
1246 const char *handler_text
= "???", *desc
= NULL
;
1248 if (!split_key_map(tmp
, &handler
, &arg
)) {
1254 handler_text
= "internal";
1255 desc
= command_list
[find_cmd_byname(arg
)].description
;
1257 case 'x': handler_text
= "external"; break;
1258 case 'd': handler_text
= "display "; break;
1259 case 'p': handler_text
= "para "; break;
1261 outputf(COLOR_MSG
, "%s\t%s\t%s%s\t%s", tmp
, handler_text
, arg
,
1262 strlen(arg
) < 8? "\t" : "",
1266 for (i
= 0; command_list
[i
].handler
; i
++) {
1267 struct gui_command gc
= command_list
[i
];
1269 outputf(COLOR_MSG
, "%s\tinternal\t%s\t%s%s", gc
.key
, gc
.name
,
1270 strlen(gc
.name
) < 8? "\t" : "",
1273 print_in_bar(COLOR_MSG
, "try \"para_gui -h\" or \"para_client help\" "
1277 static void com_shrink_top_win(void)
1279 if (top
.lines
<= theme
.top_lines_min
) {
1280 PARA_WARNING_LOG("can not decrease top window");
1283 init_wins(top
.lines
- 1);
1286 print_in_bar(COLOR_MSG
, "%s", "decreased top window");
1289 static void com_enlarge_top_win(void)
1291 if (bot
.lines
< 3) {
1292 PARA_WARNING_LOG("can not increase top window");
1295 init_wins(top
.lines
+ 1);
1298 print_in_bar(COLOR_MSG
, "increased top window");
1301 static void com_version(void)
1303 print_in_bar(COLOR_MSG
, "para_gui " PACKAGE_VERSION
" \""
1307 __noreturn
static void com_quit(void)
1312 static void com_refresh(void)
1318 static void change_theme(int next
)
1324 /* This seems to be needed twice, why? */
1327 PARA_NOTICE_LOG("new theme: %s", theme
.name
);
1330 static void com_next_theme(void)
1335 static void com_prev_theme(void)
1341 static void handle_command(int c
)
1345 /* first check user's key bindings */
1346 for (i
= 0; i
< conf
.key_map_given
; ++i
) {
1347 char *tmp
, *handler
, *arg
;
1349 tmp
= para_strdup(conf
.key_map_arg
[i
]);
1350 if (!split_key_map(tmp
, &handler
, &arg
)) {
1354 if (strcmp(tmp
, km_keyname(c
))) {
1358 if (*handler
== 'd')
1360 else if (*handler
== 'x')
1362 else if (*handler
== 'p')
1363 client_cmd_cmdline(arg
);
1364 else if (*handler
== 'i') {
1365 int num
= find_cmd_byname(arg
);
1367 command_list
[num
].handler();
1372 /* not found, check internal key bindings */
1373 for (i
= 0; command_list
[i
].handler
; i
++) {
1374 if (!strcmp(km_keyname(c
), command_list
[i
].key
)) {
1375 command_list
[i
].handler();
1379 print_in_bar(COLOR_ERRMSG
, "key '%s' is not bound, press ? for help",
1383 int main(int argc
, char *argv
[])
1391 if (gui_cmdline_parser(argc
, argv
, &conf
)) {
1392 fprintf(stderr
, "parse error while reading command line\n");
1395 HANDLE_VERSION_FLAG("gui", conf
);
1396 init_theme(0, &theme
);
1397 top
.lines
= theme
.top_lines_default
;
1398 if (check_key_map_args() < 0) {
1399 fprintf(stderr
, "invalid key map\n");
1402 cf
= configfile_exists();
1403 if (!cf
&& conf
.config_file_given
) {
1404 fprintf(stderr
, "can not read config file %s\n",
1405 conf
.config_file_arg
);
1409 struct gui_cmdline_parser_params params
= {
1412 .check_required
= 0,
1413 .check_ambiguity
= 0
1415 gui_cmdline_parser_config_file(cf
, &conf
, ¶ms
);
1417 loglevel
= get_loglevel_by_name(conf
.loglevel_arg
);
1418 if (check_key_map_args() < 0) {
1419 fprintf(stderr
, "invalid key map in config file\n");
1422 setup_signal_handling();
1423 bot_win_rb
= ringbuffer_new(RINGBUFFER_SIZE
);
1424 initscr(); /* needed only once, always successful */
1429 ret
= do_select(GETCH_MODE
);
1432 print_in_bar(COLOR_MSG
, " ");
1433 handle_command(ret
);