Allow to print booleans with %b

src/printf.c

@@ -296,6 +296,7 @@ rspamd_vsnprintf (gchar *buf, glong max, const gchar *fmt, va_list args)
 	guint               width, sign, hex, humanize, bytes, frac_width, i;
 	f_str_t			   *v;
 	GString            *gs;
+	gboolean            bv;
 
 	if (max <= 0) {
 		return buf;
@@ -594,6 +595,20 @@ rspamd_vsnprintf (gchar *buf, glong max, const gchar *fmt, va_list args)
 
 				continue;
 
+			case 'b':
+				bv = (gboolean) va_arg (args, double);
+				if (bv) {
+					len = MIN (last - buf, 4);
+					memcpy (buf, "true", len);
+				}
+				else {
+					len = MIN (last - buf, 5);
+					memcpy (buf, "false", len);
+				}
+				fmt++;
+
+				continue;
+
 			case 'G':
 				f = (long double) va_arg (args, long double);
 

src/printf.h

@@ -40,6 +40,7 @@
  *	%[0][width][.width]F	    long double
  *	%[0][width][.width]g	    double
  *	%[0][width][.width]G	    long double
+ *	%b                          boolean (true or false)
  *	%P						    pid_t
  *	%r				            rlim_t
  *	%p						    void *