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);