2 * Copyright (C) 1998-2011 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);
112 static void com_cancel_scrolling(void);
113 static void com_scroll_top(void);
115 static struct gui_command command_list[] = {
119 .description = "print help",
123 .name = "enlarge_win",
124 .description = "enlarge the top window",
125 .handler = com_enlarge_top_win
128 .name = "shrink_win",
129 .description = "shrink the top window",
130 .handler = com_shrink_top_win
133 .name = "reread_conf",
134 .description = "reread configuration file",
135 .handler = com_reread_conf
139 .description = "exit para_gui",
144 .description = "redraw the screen",
145 .handler = com_refresh
148 .name = "next_theme",
149 .description = "switch to next theme",
150 .handler = com_next_theme
153 .name = "prev_theme",
154 .description = "switch to previous stream",
155 .handler = com_prev_theme
159 .description = "increase loglevel (decreases verbosity)",
160 .handler = com_ll_incr
164 .description = "decrease loglevel (increases verbosity)",
165 .handler = com_ll_decr
169 .description = "show the para_gui version",
170 .handler = com_version
174 .description = "scroll up one line",
175 .handler = com_scroll_up
178 .name = "scroll_down",
179 .description = "scroll down one line",
180 .handler = com_scroll_down
184 .description = "scroll up one page",
185 .handler = com_page_up
189 .description = "scroll down one page",
190 .handler = com_page_down
193 .name = "scroll_top",
194 .description = "scroll to top of buffer",
195 .handler = com_scroll_top
198 .name = "cancel_scroll",
199 .description = "deactivate scroll mode",
200 .handler = com_cancel_scrolling
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>");
246 sprintf(buf, "<home>");
250 sprintf(buf, "<end>");
253 if (c < 256 && c > -128 && iscntrl((unsigned char) c)) {
258 buf[1] = (c + '@') & 0x7f;
261 snprintf(buf, sizeof(buf), "\\%d%d%d", c >> 6,
262 (c >> 3) & 7, c & 7);
263 } else if (c >= KEY_F0 && c < KEY_F(256))
264 sprintf(buf, "<F%d>", c - KEY_F0);
266 snprintf(buf, sizeof(buf), "%c", (unsigned char) c);
268 snprintf(buf, sizeof(buf), "\\x%hx", (unsigned short) c);
272 static char *configfile_exists(void)
274 static char *config_file;
277 if (!conf.config_file_given) {
279 char *home = para_homedir();
280 config_file = make_message("%s/.paraslash/gui.conf",
286 tmp = conf.config_file_arg;
287 return file_exists(tmp)? tmp: NULL;
291 * print num spaces to curses window
293 static void add_spaces(WINDOW* win, unsigned int num)
302 * print aligned string to curses window. This function always prints
305 static int align_str(WINDOW* win, char *str, unsigned int len,
308 int i, num; /* of spaces */
312 num = len - strlen(str);
317 /* replace control characters by spaces */
318 for (i = 0; i < len && str[i]; i++) {
319 if (str[i] == '\n' || str[i] == '\r' || str[i] == '\f')
324 add_spaces(win, num);
325 } else if (align == RIGHT) {
326 add_spaces(win, num);
329 add_spaces(win, num / 2);
330 waddstr(win, str[0]? str: "");
331 add_spaces(win, num - num / 2);
336 __printf_2_3 static void print_in_bar(int color, const char *fmt,...)
342 wattron(in.win, COLOR_PAIR(color));
343 PARA_VSPRINTF(fmt, msg);
345 align_str(in.win, msg, sb.cols, LEFT);
351 * update the status bar
353 static void print_status_bar(void)
359 tmp = para_strdup(STANDARD_STATUS_BAR);
361 align_str(sb.win, tmp, sb.cols, CENTER);
367 * get the number of the oldest rbe that is (partially) visible. On return,
368 * lines contains the sum of the number of lines of all visable entries. If the
369 * first one is only partially visible, lines is greater than bot.lines.
371 static int first_visible_rbe(unsigned *lines)
375 for (i = scroll_position; i < RINGBUFFER_SIZE; i++) {
376 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, i);
380 // fprintf(stderr, "found: %s\n", rbe->msg);
381 rbe_lines = NUM_LINES(rbe->len);
382 if (rbe_lines > bot.lines)
385 if (*lines >= bot.lines)
388 return RINGBUFFER_SIZE - 1;
391 static int draw_top_rbe(unsigned *lines)
394 int offset, fvr = first_visible_rbe(lines);
395 struct rb_entry *rbe;
399 wmove(bot.win, 0, 0);
400 rbe = ringbuffer_get(bot_win_rb, fvr);
403 /* first rbe might be only partially visible */
404 offset = (*lines - bot.lines) * bot.cols;
405 len = strlen(rbe->msg);
406 if (offset < 0 || len < offset)
408 wattron(bot.win, COLOR_PAIR(rbe->color));
409 waddstr(bot.win, rbe->msg + offset);
410 *lines = NUM_LINES(len - offset);
414 static void redraw_bot_win(void)
419 wmove(bot.win, 0, 0);
421 i = draw_top_rbe(&lines);
424 while (i > 0 && lines < bot.lines) {
425 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, --i);
428 waddstr(bot.win, "\n");
431 lines += NUM_LINES(rbe->len);
432 wattron(bot.win, COLOR_PAIR(rbe->color));
433 waddstr(bot.win, "\n");
434 waddstr(bot.win, rbe->msg);
440 static void rb_add_entry(int color, char *msg)
442 struct rb_entry *old, *new = para_malloc(sizeof(struct rb_entry));
445 new->len = strlen(msg);
447 old = ringbuffer_add(bot_win_rb, new);
448 // fprintf(stderr, "added: %s\n", new->msg);
453 if (scroll_position) {
454 /* discard current scrolling, like xterm does */
459 wattron(bot.win, COLOR_PAIR(color));
460 getyx(bot.win, y, x);
462 waddstr(bot.win, "\n");
463 waddstr(bot.win, msg);
467 * print formated output to bot win and refresh
469 __printf_2_3 static void outputf(int color, const char* fmt,...)
475 PARA_VSPRINTF(fmt, msg);
476 rb_add_entry(color, msg);
480 static int add_output_line(char *line, __a_unused void *data)
484 rb_add_entry(COLOR_OUTPUT, para_strdup(line));
490 __printf_2_3 void para_log(int ll, const char *fmt,...)
495 if (ll < loglevel || !curses_active)
504 color = COLOR_ERRMSG;
506 PARA_VSPRINTF(fmt, msg);
508 rb_add_entry(color, msg);
512 static void setup_signal_handling(void)
514 signal_pipe = para_signal_init();
515 para_install_sighandler(SIGINT);
516 para_install_sighandler(SIGTERM);
517 para_install_sighandler(SIGCHLD);
518 para_install_sighandler(SIGWINCH);
519 para_install_sighandler(SIGUSR1);
520 para_sigaction(SIGHUP, SIG_IGN);
523 __noreturn static void do_exit(int ret)
525 para_sigaction(SIGTERM, SIG_IGN);
530 static void shutdown_curses(void)
539 __noreturn static void finish(int ret)
546 * exit curses and print given message to stdout/stderr
548 __noreturn __printf_2_3 static void msg_n_exit(int ret, const char* fmt, ...)
551 FILE *outfd = ret? stderr: stdout;
555 vfprintf(outfd, fmt, argp);
560 static void print_welcome(void)
562 if (loglevel > LL_NOTICE)
564 outputf(COLOR_WELCOME, "Welcome to para_gui " PACKAGE_VERSION
565 " \"" CODENAME "\". Theme: %s", theme.name);
572 static void init_wins(int top_lines)
576 top.lines = top_lines;
581 bot.lines = LINES - top.lines - 3;
583 bot.begy = top.lines + 1;
598 sep.begy = top.lines;
601 assume_default_colors(theme.default_fg, theme.default_bg);
603 mvwin(top.win, top.begy, top.begx);
604 wresize(top.win, top.lines, top.cols);
606 mvwin(sb.win, sb.begy, sb.begx);
607 wresize(sb.win, sb.lines, sb.cols);
609 mvwin(sep.win, sep.begy, sep.begx);
610 wresize(sep.win, sep.lines, sep.cols);
612 mvwin(bot.win, bot.begy, bot.begx);
613 wresize(bot.win, bot.lines, bot.cols);
615 mvwin(in.win, in.begy, in.begx);
616 wresize(in.win, in.lines, in.cols);
618 sep.win = newwin(sep.lines, sep.cols, sep.begy, sep.begx);
619 top.win = newwin(top.lines, top.cols, top.begy, top.begx);
620 bot.win = newwin(bot.lines, bot.cols, bot.begy, bot.begx);
621 sb.win = newwin(sb.lines, sb.cols, sb.begy, sb.begx);
622 in.win = newwin(in.lines, in.cols, in.begy, in.begx);
623 if (!top.win || !bot.win || !sb.win || !in.win || !sep.win)
624 msg_n_exit(1, "Error: Cannot create curses windows\n");
628 scrollok(bot.win, 1);
629 wattron(sb.win, COLOR_PAIR(COLOR_STATUSBAR));
630 wattron(sep.win, COLOR_PAIR(COLOR_SEPARATOR));
631 wattron(bot.win, COLOR_PAIR(COLOR_BOT));
632 wattron(top.win, COLOR_PAIR(COLOR_TOP));
644 wmove(sep.win, 0, 0);
645 for (i = 1; i <= COLS; i++)
646 waddstr(sep.win, theme.sep_str);
649 wnoutrefresh(top.win);
650 wnoutrefresh(bot.win);
651 //wnoutrefresh(sb.win);
653 wnoutrefresh(in.win);
654 wnoutrefresh(sep.win);
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 char **c = stat_content + item_num;
687 *c = para_strdup("(artist tag not set)");
690 *c = para_strdup("(title tag not set)");
693 *c = para_strdup("????");
696 *c = para_strdup("(album tag not set)");
699 *c = para_strdup("(comment tag not set)");
703 *c = para_strdup(buf);
705 print_stat_item(item_num);
709 static int read_stat_pipe(fd_set *rfds)
712 static int bufsize, loaded;
718 if (loaded >= bufsize) {
719 if (bufsize > 1000 * 1000) {
723 bufsize += bufsize + 1000;
724 buf = para_realloc(buf, bufsize);
726 assert(loaded < bufsize);
727 ret = read_nonblock(stat_pipe, buf + loaded, bufsize - loaded,
730 ret2 = for_each_stat_item(buf, loaded, update_item);
731 if (ret < 0 || ret2 < 0) {
733 return ret2 < 0? ret2 : ret;
735 sz = ret2; /* what is left */
736 if (sz > 0 && sz < loaded)
737 memmove(buf, buf + loaded - sz, sz);
742 static void print_all_items(void)
748 FOR_EACH_STATUS_ITEM(i)
752 static void clear_all_items(void)
756 FOR_EACH_STATUS_ITEM(i) {
757 free(stat_content[i]);
758 stat_content[i] = para_strdup("");
762 static void init_colors(void)
767 msg_n_exit(EXIT_FAILURE, "Error: No color term\n");
769 FOR_EACH_STATUS_ITEM(i)
770 if (theme.data[i].len)
771 init_pair(i + 1, theme.data[i].fg, theme.data[i].bg);
772 init_pair(COLOR_STATUSBAR, theme.sb_fg, theme.sb_bg);
773 init_pair(COLOR_COMMAND, theme.cmd_fg, theme.cmd_bg);
774 init_pair(COLOR_OUTPUT, theme.output_fg, theme.output_bg);
775 init_pair(COLOR_MSG, theme.msg_fg, theme.msg_bg);
776 init_pair(COLOR_ERRMSG, theme.err_msg_fg, theme.err_msg_bg);
777 init_pair(COLOR_WELCOME, theme.welcome_fg, theme.welcome_bg);
778 init_pair(COLOR_SEPARATOR, theme.sep_fg, theme.sep_bg);
779 init_pair(COLOR_TOP, theme.default_fg, theme.default_bg);
780 init_pair(COLOR_BOT, theme.default_fg, theme.default_bg);
783 /* (Re-)initialize the curses library. FIXME: Error checking. */
784 static void init_curses(void)
787 if (top.win && refresh() == ERR) /* refesh is really needed */
788 msg_n_exit(EXIT_FAILURE, "refresh() failed\n");
789 if (LINES < theme.lines_min || COLS < theme.cols_min)
790 msg_n_exit(EXIT_FAILURE, "Error: Terminal (%dx%d) too small"
791 " (need at least %dx%d)\n", COLS, LINES,
792 theme.cols_min, theme.lines_min);
793 curs_set(0); /* make cursor invisible, ignore errors */
794 nonl(); /* tell curses not to do NL->CR/NL on output */
795 noecho(); /* don't echo input */
796 cbreak(); /* take input chars one at a time, no wait for \n */
799 init_wins(theme.top_lines_default);
801 noecho(); /* don't echo input */
804 static void check_sigchld(void)
809 ret = para_reap_child(&pid);
812 if (pid == cmd_pid) {
816 goto reap_next_child;
820 * This sucker modifies its first argument. *handler and *arg are
821 * pointers to 0-terminated strings (inside line). Crap.
823 static int split_key_map(char *line, char **handler, char **arg)
825 if (!(*handler = strchr(line + 1, ':')))
829 if (!(*arg = strchr(*handler, ':')))
838 static int check_key_map_args(void)
842 char *tmp = NULL, *handler, *arg;
844 for (i = 0; i < conf.key_map_given; ++i) {
845 s = conf.key_map_arg[i];
849 tmp = para_strdup(s);
850 if (!split_key_map(tmp, &handler, &arg))
852 if (strlen(handler) != 1)
861 if (find_cmd_byname(arg) < 0)
871 * React to various signal-related events
873 static void handle_signal(int sig)
877 msg_n_exit(EXIT_FAILURE,
878 "only the good die young (caught SIGTERM))\n");
888 PARA_WARNING_LOG("caught SIGINT, reset");
889 /* Nothing to do. SIGINT killed our child which gets noticed
890 * by do_select and resets everything.
894 PARA_NOTICE_LOG("got SIGUSR1, rereading configuration");
903 static int open_stat_pipe(void)
906 int ret, fds[3] = {0, 1, 0};
913 * Sleep a bit to avoid a busy loop. As the call to sleep() may
914 * be interrupted by SIGCHLD, we simply wait until the call
919 ret = para_exec_cmdline_pid(&pid, conf.stat_cmd_arg, fds);
922 ret = mark_fd_nonblocking(fds[1]);
930 * This is the core select loop. Besides the (internal) signal
931 * pipe, the following other fds are checked according to the mode:
933 * GETCH_MODE: check stdin, return when key is pressed
935 * COMMAND_MODE: check command_pipe and stdin. Return when a screen full
936 * of output has been read or when other end has closed command pipe or
937 * when any key is pressed.
939 * EXTERNAL_MODE: Check only signal pipe. Used when an external command
940 * is running. During that time curses is disabled. Returns when
943 static int do_select(int mode)
948 char command_buf[4096] = "";
949 int cbo = 0; /* command buf offset */
952 tv.tv_sec = conf.timeout_arg / 1000;
953 tv.tv_usec = (conf.timeout_arg % 1000) * 1000;
954 // ret = refresh_status();
958 stat_pipe = open_stat_pipe();
960 para_fd_set(stat_pipe, &rfds, &max_fileno);
962 para_fd_set(signal_pipe, &rfds, &max_fileno);
963 /* command pipe only for COMMAND_MODE */
964 if (command_pipe >= 0 && mode == COMMAND_MODE)
965 para_fd_set(command_pipe, &rfds, &max_fileno);
966 ret = para_select(max_fileno + 1, &rfds, NULL, &tv);
968 goto check_return; /* skip fd checks */
970 ret = para_next_signal(&rfds);
973 /* read command pipe if ready */
974 if (command_pipe >= 0 && mode == COMMAND_MODE) {
976 ret = read_nonblock(command_pipe, command_buf + cbo,
977 sizeof(command_buf) - 1 - cbo, &rfds, &sz);
980 cbo = for_each_line(command_buf, cbo, &add_output_line, NULL);
984 PARA_NOTICE_LOG("closing command pipe: %s",
985 para_strerror(-ret));
991 ret = read_stat_pipe(&rfds);
993 PARA_NOTICE_LOG("closing stat pipe: %s\n", para_strerror(-ret));
997 free(stat_content[SI_BASENAME]);
998 stat_content[SI_BASENAME] =
999 para_strdup("stat command terminated!?");
1005 ret = wgetch(top.win);
1006 if (ret != ERR && ret != KEY_RESIZE) {
1008 close(command_pipe);
1012 kill(cmd_pid, SIGTERM);
1017 ret = wgetch(top.win);
1018 if (ret != ERR && ret != KEY_RESIZE)
1031 * read from command pipe and print data to bot window
1033 static int send_output(void)
1037 if (command_pipe < 0)
1039 ret = mark_fd_nonblocking(command_pipe);
1041 close(command_pipe);
1044 if (do_select(COMMAND_MODE) >= 0)
1045 PARA_INFO_LOG("command complete");
1047 PARA_NOTICE_LOG("command aborted");
1048 print_in_bar(COLOR_MSG, " ");
1052 static int client_cmd_cmdline(char *cmd)
1054 int ret, fds[3] = {0, 1, 0};
1055 char *c = make_message(BINDIR "/para_client -- %s", cmd);
1057 outputf(COLOR_COMMAND, "%s", c);
1058 print_in_bar(COLOR_MSG, "executing client command, hit any key to abort\n");
1059 ret = para_exec_cmdline_pid(&cmd_pid, c, fds);
1063 command_pipe = fds[1];
1064 return send_output();
1068 * exec command and print output to bot win
1070 static int display_cmd(char *cmd)
1072 int fds[3] = {0, 1, 0};
1074 print_in_bar(COLOR_MSG, "executing display command, hit any key to abort");
1075 outputf(COLOR_COMMAND, "%s", cmd);
1076 if (para_exec_cmdline_pid(&cmd_pid, cmd, fds) < 0)
1078 command_pipe = fds[1];
1079 return send_output();
1083 * shutdown curses and stat pipe before executing external commands
1085 static int external_cmd(char *cmd)
1087 int fds[3] = {-1, -1, -1};
1092 para_exec_cmdline_pid(&cmd_pid, cmd, fds);
1094 do_select(EXTERNAL_MODE);
1099 static void print_scroll_msg(void)
1101 unsigned lines_total, filled = ringbuffer_filled(bot_win_rb);
1102 int first_rbe = first_visible_rbe(&lines_total);
1103 print_in_bar(COLOR_MSG, "scrolled view: %d-%d/%d\n", filled - first_rbe,
1104 filled - scroll_position, ringbuffer_filled(bot_win_rb));
1107 static void com_scroll_top(void)
1109 int i = RINGBUFFER_SIZE - 1;
1112 while (i > 0 && !ringbuffer_get(bot_win_rb, i))
1114 /* i is oldest entry */
1115 for (; lines < bot.lines && i >= 0; i--) {
1116 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, i);
1119 lines += NUM_LINES(strlen(rbe->msg));
1122 if (lines > 0 && scroll_position != i) {
1123 scroll_position = i;
1128 print_in_bar(COLOR_ERRMSG, "top of buffer is shown\n");
1131 static void com_cancel_scrolling(void)
1134 if (scroll_position == 0) {
1135 print_in_bar(COLOR_ERRMSG, "bottom of buffer is shown\n");
1138 scroll_position = 0;
1142 static void com_page_down(void)
1145 int i = scroll_position;
1146 while (lines < bot.lines && --i > 0) {
1147 struct rb_entry *rbe = ringbuffer_get(bot_win_rb, i);
1150 lines += NUM_LINES(strlen(rbe->msg));
1153 scroll_position = i;
1158 print_in_bar(COLOR_ERRMSG, "bottom of buffer is shown\n");
1161 static void com_page_up(void)
1164 int fvr = first_visible_rbe(&lines);
1166 if (fvr < 0 || fvr + 1 >= ringbuffer_filled(bot_win_rb)) {
1167 print_in_bar(COLOR_ERRMSG, "top of buffer is shown\n");
1170 scroll_position = fvr + 1;
1171 for (; scroll_position > 0; scroll_position--) {
1172 first_visible_rbe(&lines);
1173 if (lines == bot.lines)
1180 static void com_scroll_down(void)
1182 struct rb_entry *rbe;
1185 if (!scroll_position) {
1186 print_in_bar(COLOR_ERRMSG, "bottom of buffer is shown\n");
1190 rbe = ringbuffer_get(bot_win_rb, scroll_position);
1191 rbe_lines = NUM_LINES(rbe->len);
1192 wscrl(bot.win, rbe_lines);
1193 wmove(bot.win, bot.lines - rbe_lines, 0);
1194 wattron(bot.win, COLOR_PAIR(rbe->color));
1195 waddstr(bot.win, rbe->msg);
1200 static void com_scroll_up(void)
1202 struct rb_entry *rbe = NULL;
1204 int i, first_rbe, num_scroll;
1206 /* the entry that is going to vanish */
1207 rbe = ringbuffer_get(bot_win_rb, scroll_position);
1210 num_scroll = NUM_LINES(rbe->len);
1211 first_rbe = first_visible_rbe(&lines);
1212 if (first_rbe < 0 || (first_rbe == ringbuffer_filled(bot_win_rb) - 1))
1215 wscrl(bot.win, -num_scroll);
1216 i = draw_top_rbe(&lines);
1219 while (i > 0 && lines < num_scroll) {
1221 rbe = ringbuffer_get(bot_win_rb, --i);
1224 rbe_lines = NUM_LINES(rbe->len);
1226 // fprintf(stderr, "msg: %s\n", rbe->msg);
1227 wattron(bot.win, COLOR_PAIR(rbe->color));
1228 waddstr(bot.win, "\n");
1229 waddstr(bot.win, rbe->msg);
1238 print_in_bar(COLOR_ERRMSG, "top of buffer is shown\n");
1241 static void com_ll_decr(void)
1243 if (loglevel <= LL_DEBUG) {
1244 print_in_bar(COLOR_ERRMSG,
1245 "loglevel already at maximal verbosity\n");
1249 print_in_bar(COLOR_MSG, "loglevel set to %d\n", loglevel);
1252 static void com_ll_incr(void)
1254 if (loglevel >= LL_EMERG) {
1255 print_in_bar(COLOR_ERRMSG,
1256 "loglevel already at minimal verbosity\n");
1260 print_in_bar(COLOR_MSG, "loglevel set to %d\n", loglevel);
1264 * reread configuration, terminate on errors
1266 static void com_reread_conf(void)
1268 char *cf =configfile_exists();
1269 struct gui_cmdline_parser_params params = {
1272 .check_required = 0,
1273 .check_ambiguity = 0,
1278 PARA_WARNING_LOG("there is no configuration to read");
1281 PARA_INFO_LOG("rereading command line options and config file");
1282 gui_cmdline_parser_ext(_argc, _argv, &conf, ¶ms);
1283 if (gui_cmdline_parser_config_file(cf, &conf, ¶ms) != 0) {
1284 PARA_EMERG_LOG("errors in config file");
1285 finish(EXIT_FAILURE);
1287 PARA_NOTICE_LOG("config file reloaded");
1288 if (check_key_map_args() < 0)
1289 finish(EXIT_FAILURE);
1292 static void com_help(void)
1296 for (i = 0; i < conf.key_map_given; ++i) {
1297 char *handler, *arg, *tmp = para_strdup(conf.key_map_arg[i]);
1298 const char *handler_text = "???", *desc = NULL;
1300 if (!split_key_map(tmp, &handler, &arg)) {
1306 handler_text = "internal";
1307 desc = command_list[find_cmd_byname(arg)].description;
1309 case 'x': handler_text = "external"; break;
1310 case 'd': handler_text = "display "; break;
1311 case 'p': handler_text = "para "; break;
1313 outputf(COLOR_MSG, "%s\t%s\t%s%s\t%s", tmp, handler_text, arg,
1314 strlen(arg) < 8? "\t" : "",
1318 for (i = 0; command_list[i].handler; i++) {
1319 struct gui_command gc = command_list[i];
1321 outputf(COLOR_MSG, "%s\tinternal\t%s\t%s%s", gc.key, gc.name,
1322 strlen(gc.name) < 8? "\t" : "",
1325 print_in_bar(COLOR_MSG, "try \"para_gui -h\" or \"para_client help\" "
1329 static void com_shrink_top_win(void)
1331 if (top.lines <= theme.top_lines_min) {
1332 PARA_WARNING_LOG("can not decrease top window");
1335 init_wins(top.lines - 1);
1338 print_in_bar(COLOR_MSG, "%s", "decreased top window");
1341 static void com_enlarge_top_win(void)
1343 if (bot.lines < 3) {
1344 PARA_WARNING_LOG("can not increase top window");
1347 init_wins(top.lines + 1);
1350 print_in_bar(COLOR_MSG, "increased top window");
1353 static void com_version(void)
1355 print_in_bar(COLOR_MSG, "para_gui " PACKAGE_VERSION " \""
1359 __noreturn static void com_quit(void)
1364 static void com_refresh(void)
1370 static void change_theme(int next)
1376 /* This seems to be needed twice, why? */
1379 PARA_NOTICE_LOG("new theme: %s", theme.name);
1382 static void com_next_theme(void)
1387 static void com_prev_theme(void)
1393 static void handle_command(int c)
1397 /* first check user's key bindings */
1398 for (i = 0; i < conf.key_map_given; ++i) {
1399 char *tmp, *handler, *arg;
1401 tmp = para_strdup(conf.key_map_arg[i]);
1402 if (!split_key_map(tmp, &handler, &arg)) {
1406 if (strcmp(tmp, km_keyname(c))) {
1410 if (*handler == 'd')
1412 else if (*handler == 'x')
1414 else if (*handler == 'p')
1415 client_cmd_cmdline(arg);
1416 else if (*handler == 'i') {
1417 int num = find_cmd_byname(arg);
1419 command_list[num].handler();
1424 /* not found, check internal key bindings */
1425 for (i = 0; command_list[i].handler; i++) {
1426 if (!strcmp(km_keyname(c), command_list[i].key)) {
1427 command_list[i].handler();
1431 print_in_bar(COLOR_ERRMSG, "key '%s' is not bound, press ? for help",
1435 int main(int argc, char *argv[])
1443 if (gui_cmdline_parser(argc, argv, &conf) != 0)
1445 HANDLE_VERSION_FLAG("gui", conf);
1446 cf = configfile_exists();
1447 if (!cf && conf.config_file_given) {
1448 fprintf(stderr, "can not read config file %s\n",
1449 conf.config_file_arg);
1453 struct gui_cmdline_parser_params params = {
1456 .check_required = 0,
1457 .check_ambiguity = 0,
1460 if (gui_cmdline_parser_config_file(cf, &conf, ¶ms) != 0)
1463 loglevel = get_loglevel_by_name(conf.loglevel_arg);
1464 if (check_key_map_args() < 0) {
1465 fprintf(stderr, "invalid key map\n");
1468 init_theme_or_die(conf.theme_arg, &theme);
1469 top.lines = theme.top_lines_default;
1470 setup_signal_handling();
1471 bot_win_rb = ringbuffer_new(RINGBUFFER_SIZE);
1472 initscr(); /* needed only once, always successful */
1477 ret = do_select(GETCH_MODE);
1480 print_in_bar(COLOR_MSG, " ");
1481 handle_command(ret);