Add command line option "-c" (or "--colors") to display default colors in terminal

4 files changed, 90 insertions, 1 deletions

diff --git a/src/core/weechat.c b/src/core/weechat.c
index 75dac6b3c..8d60ba4a0 100644
--- a/src/core/weechat.c
+++ b/src/core/weechat.c
@@ -110,6 +110,7 @@ weechat_display_usage (char *exec_name)
     string_iconv_fprintf (stdout, "\n\n");
     string_iconv_fprintf (stdout,
                           _("  -a, --no-connect  disable auto-connect to servers at startup\n"
+                            "  -c, --colors      display default colors in terminal\n"
                             "  -d, --dir <path>  set WeeChat home directory (default: ~/.weechat)\n"
                             "  -h, --help        this help\n"
                             "  -k, --keys        display WeeChat default keys\n"
@@ -173,7 +174,13 @@ weechat_parse_args (int argc, char *argv[])
     
     for (i = 1; i < argc; i++)
     {
-        if ((strcmp (argv[i], "-d") == 0)
+        if ((strcmp (argv[i], "-c") == 0)
+            || (strcmp (argv[i], "--colors") == 0))
+        {
+            gui_color_display_terminal_colors ();
+            weechat_shutdown (EXIT_SUCCESS, 0);
+        }
+        else if ((strcmp (argv[i], "-d") == 0)
             || (strcmp (argv[i], "--dir") == 0))
         {
             if (i + 1 < argc)
diff --git a/src/gui/curses/gui-curses-color.c b/src/gui/curses/gui-curses-color.c
index 9d8a484a6..5508ac832 100644
--- a/src/gui/curses/gui-curses-color.c
+++ b/src/gui/curses/gui-curses-color.c
@@ -327,6 +327,75 @@ gui_color_init ()
 }
 
 /*
+ * gui_color_display_terminal_colors: display terminal colors
+ *                                    This is called by command line option
+ *                                    "-c" / "--colors"
+ */
+
+void
+gui_color_display_terminal_colors ()
+{
+    int lines, line, col, color;
+    int color_support, colors, color_pairs, change_color;
+    char str_line[1024], str_color[64];
+
+    color_support = 0;
+    colors = 0;
+    color_pairs = 0;
+    change_color = 0;
+    
+    initscr ();
+    if (has_colors ())
+    {
+        color_support = 1;
+        start_color ();
+        use_default_colors ();
+        colors = COLORS;
+        color_pairs = COLOR_PAIRS;
+        change_color = can_change_color () ? 1 : 0;
+        refresh ();
+        endwin ();
+    }
+    printf ("\n");
+    printf ("%s $TERM=%s   COLORS: %d, COLOR_PAIRS: %d, "
+            "can_change_color: %s\n",
+            _("Terminal infos:"),
+            getenv ("TERM"), colors, color_pairs,
+            (change_color) ? "yes" : "no");
+    if (colors == 0)
+    {
+        printf ("%s\n", _("No color support in terminal."));
+    }
+    else
+    {
+        printf ("\n");
+        printf ("%s\n", _("Default colors:"));
+        printf ("------------------------------------------------------------"
+                "--------------------\n");
+        lines = (colors < 16) ? colors : 16;
+        for (line = 0; line < lines; line++)
+        {
+            str_line[0] = '\0';
+            for (col = 0; col < 16; col++)
+            {
+                color = (col * 16) + line;
+                if (color < colors)
+                {
+                    snprintf (str_color, sizeof (str_color),
+                              "\33[0;38;5;%dm %03d ", color, color);
+                    strcat (str_line, str_color);
+                }
+            }
+            printf ("%s\n", str_line);
+        }
+        printf ("\33[0m");
+        printf ("------------------------------------------------------------"
+                "--------------------\n");
+    }
+    printf ("\n");
+}
+
+/*
  * gui_color_end: end GUI colors
  */
 
diff --git a/src/gui/gtk/gui-gtk-color.c b/src/gui/gtk/gui-gtk-color.c
index a4d7d0978..9cbd111d2 100644
--- a/src/gui/gtk/gui-gtk-color.c
+++ b/src/gui/gtk/gui-gtk-color.c
@@ -216,6 +216,18 @@ gui_color_init ()
 }
 
 /*
+ * gui_color_display_terminal_colors: display terminal colors
+ *                                    This is called by command line option
+ *                                    "-c" / "--colors"
+ */
+
+void
+gui_color_display_terminal_colors ()
+{
+    /* This function does nothing in Gtk GUI */
+}
+
+/*
  * gui_color_end: end GUI colors
  */
 
diff --git a/src/gui/gui-color.h b/src/gui/gui-color.h
index 0bbbda209..a78cefa87 100644
--- a/src/gui/gui-color.h
+++ b/src/gui/gui-color.h
@@ -144,5 +144,6 @@ extern int gui_color_get_number ();
 extern const char *gui_color_get_name (int num_color);
 extern void gui_color_init_pairs ();
 extern void gui_color_init_weechat ();
+extern void gui_color_display_terminal_colors ();
 
 #endif /* __WEECHAT_GUI_COLOR_H */