core: add automatic reset of color pairs, new option weechat.look.color_pairs_auto_reset

src/core/wee-command.c

@@ -4754,8 +4754,9 @@ command_init ()
                      "  color: color number (>= 0, max depends on terminal, "
                      "commonly 63 or 255)\n"
                      "   name: alias name for color (for example: \"orange\")\n"
-                     "  reset: reset all color pairs (useful when no more "
-                     "pairs are available)\n\n"
+                     "  reset: reset all color pairs (required when no more "
+                     "color pairs are available if automatic reset is disabled, "
+                     "see option weechat.look.color_pairs_auto_reset)\n\n"
                      "Without argument, this command displays colors in a new "
                      "buffer.\n\n"
                      "Examples:\n"

src/core/wee-config.c

@@ -79,6 +79,7 @@ struct t_config_option *config_startup_display_version;
 struct t_config_option *config_look_align_end_of_lines;
 struct t_config_option *config_look_buffer_notify_default;
 struct t_config_option *config_look_buffer_time_format;
+struct t_config_option *config_look_color_pairs_auto_reset;
 struct t_config_option *config_look_color_real_white;
 struct t_config_option *config_look_command_chars;
 struct t_config_option *config_look_confirm_quit;
@@ -1556,6 +1557,14 @@ config_weechat_init_options ()
            "\"${color}\", for example french time: "
            "\"${lightblue}%H${white}%M${lightred}%S\""),
         NULL, 0, 0, "%H:%M:%S", NULL, 0, NULL, NULL, &config_change_buffer_time_format, NULL, NULL, NULL);
+    config_look_color_pairs_auto_reset = config_file_new_option (
+        weechat_config_file, ptr_section,
+        "color_pairs_auto_reset", "integer",
+        N_("automatically reset table of color pairs when number of available "
+           "pairs is lower or equal to this number (-1 = disable automatic "
+           "reset, and then a manual \"/color reset\" is needed when table "
+            "is full)"),
+        NULL, -1, 256, "5", NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL);
     config_look_color_real_white = config_file_new_option (
         weechat_config_file, ptr_section,
         "color_real_white", "boolean",

src/core/wee-config.h

@@ -108,6 +108,7 @@ extern struct t_config_option *config_look_buffer_notify_default;
 extern struct t_config_option *config_look_buffer_time_format;
 extern struct t_config_option *config_look_command_chars;
 extern struct t_config_option *config_look_confirm_quit;
+extern struct t_config_option *config_look_color_pairs_auto_reset;
 extern struct t_config_option *config_look_color_real_white;
 extern struct t_config_option *config_look_day_change;
 extern struct t_config_option *config_look_day_change_time_format;

src/gui/curses/gui-curses-color.c

@@ -28,6 +28,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
+#include <time.h>
 
 #include "../../core/weechat.h"
 #include "../../core/wee-config.h"
@@ -80,6 +81,9 @@ int gui_color_num_pairs = 63;            /* number of pairs used by WeeChat */
 short *gui_color_pairs = NULL;           /* table with pair for each fg+bg  */
 int gui_color_pairs_used = 0;            /* number of pairs currently used  */
 int gui_color_warning_pairs_full = 0;    /* warning displayed?              */
+int gui_color_pairs_auto_reset = 0;         /* auto reset of pairs needed   */
+int gui_color_pairs_auto_reset_pending = 0; /* auto reset is pending        */
+time_t gui_color_pairs_auto_reset_last = 0; /* time of last auto reset      */
 
 /* color buffer */
 struct t_gui_buffer *gui_color_buffer = NULL; /* buffer with colors         */
@@ -343,8 +347,10 @@ gui_color_get_pair (int fg, int bg)
         if (gui_color_pairs_used >= gui_color_num_pairs)
         {
             /* oh no, no more pair available! */
-            if (!gui_color_warning_pairs_full)
+            if (!gui_color_warning_pairs_full
+                && (CONFIG_INTEGER(config_look_color_pairs_auto_reset) < 0))
             {
+                /* display warning if auto reset of pairs is disabled */
                 hook_timer (NULL, 1, 0, 1,
                             &gui_color_timer_warning_pairs_full, NULL);
                 gui_color_warning_pairs_full = 1;
@@ -356,6 +362,12 @@ gui_color_get_pair (int fg, int bg)
         gui_color_pairs_used++;
         gui_color_pairs[index] = gui_color_pairs_used;
         init_pair (gui_color_pairs_used, fg, bg);
+        if ((gui_color_num_pairs > 1) && !gui_color_pairs_auto_reset_pending
+            && (CONFIG_INTEGER(config_look_color_pairs_auto_reset) >= 0)
+            && (gui_color_num_pairs - gui_color_pairs_used <= CONFIG_INTEGER(config_look_color_pairs_auto_reset)))
+        {
+            gui_color_pairs_auto_reset = 1;
+        }
         gui_color_buffer_refresh_needed = 1;
     }
     
@@ -812,6 +824,13 @@ gui_color_buffer_display ()
 
     if (gui_color_buffer_extra_info)
     {
+        /* display time of last auto reset of color pairs */
+        y++;
+        gui_chat_printf_y (gui_color_buffer, y++,
+                           _("Last auto reset of pairs: %s"),
+                           (gui_color_pairs_auto_reset_last == 0) ?
+                           "-" : ctime (&gui_color_pairs_auto_reset_last));
+        
         /* display WeeChat basic colors */
         y++;
         gui_chat_printf_y (gui_color_buffer, y++,
@@ -1074,7 +1093,7 @@ gui_color_buffer_input_cb (void *data, struct t_gui_buffer *buffer,
     }
     else if (string_strcasecmp (input_data, "z") == 0)
     {
-        gui_color_reset_pairs (buffer);
+        gui_color_reset_pairs ();
     }
     
     return WEECHAT_RC_OK;

src/gui/curses/gui-curses-main.c

@@ -30,6 +30,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <signal.h>
+#include <time.h>
 
 #include "../../core/weechat.h"
 #include "../../core/wee-command.h"
@@ -224,7 +225,7 @@ gui_main_refreshs ()
     struct t_gui_window *ptr_win;
     struct t_gui_buffer *ptr_buffer;
     struct t_gui_bar *ptr_bar;
-
+    
     /* refresh color buffer if needed */
     if (gui_color_buffer_refresh_needed)
     {
@@ -325,11 +326,22 @@ gui_main_loop ()
         
         /* execute hook timers */
         hook_timer_exec ();
+
+        /* auto reset of color pairs */
+        if (gui_color_pairs_auto_reset)
+        {
+            gui_color_reset_pairs ();
+            gui_color_pairs_auto_reset_last = time (NULL);
+            gui_color_pairs_auto_reset = 0;
+            gui_color_pairs_auto_reset_pending = 1;
+        }
         
         gui_main_refreshs ();
         if (gui_window_refresh_needed)
             gui_main_refreshs ();
         
+        gui_color_pairs_auto_reset_pending = 0;
+        
         /* wait for keyboard or network activity */
         FD_ZERO (&read_fds);
         FD_ZERO (&write_fds);

src/gui/curses/gui-curses.h

@@ -20,6 +20,8 @@
 #ifndef __WEECHAT_GUI_CURSES_H
 #define __WEECHAT_GUI_CURSES_H 1
 
+#include <time.h>
+
 #ifdef HAVE_NCURSESW_CURSES_H
 #include <ncursesw/ncurses.h>
 #elif HAVE_NCURSES_H
@@ -59,6 +61,9 @@ extern int gui_term_cols, gui_term_lines;
 extern struct t_gui_color gui_weechat_colors[];
 extern int gui_color_term_colors;
 extern int gui_color_num_pairs;
+extern int gui_color_pairs_auto_reset;
+extern int gui_color_pairs_auto_reset_pending;
+extern time_t gui_color_pairs_auto_reset_last;
 extern int gui_color_buffer_refresh_needed;
 
 /* color functions */