improves debug

cppmyth/src/private/debug.cpp

@@ -1,5 +1,5 @@
 /*
- *      Copyright (C) 2014-2015 Jean-Luc Barriere
+ *      Copyright (C) 2014-2024 Jean-Luc Barriere
  *
  *  This library is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU Lesser General Public License as published
@@ -38,7 +38,7 @@ typedef struct
   void (*msg_callback)(int level, char* msg);
 } debug_ctx_t;
 
-static debug_ctx_t debug_ctx = {LIBTAG, DBG_NONE, NULL};
+static debug_ctx_t debug_ctx = {LIBTAG, DBG_NONE, nullptr};
 
 /**
  * Set the debug level to be used for the subsystem
@@ -48,7 +48,7 @@ static debug_ctx_t debug_ctx = {LIBTAG, DBG_NONE, NULL};
  */
 static inline void __dbg_setlevel(debug_ctx_t* ctx, int level)
 {
-  if (ctx != NULL)
+  if (ctx != nullptr)
   {
     ctx->cur_level = level;
   }
@@ -62,7 +62,7 @@ static inline void __dbg_setlevel(debug_ctx_t* ctx, int level)
  */
 static inline void __dbg(debug_ctx_t* ctx, int level, const char* fmt, va_list ap)
 {
-  if (ctx != NULL && level <= ctx->cur_level)
+  if (ctx != nullptr)
   {
     char msg[4096];
     int len = snprintf(msg, sizeof (msg), "(%s)", ctx->name);
@@ -95,8 +95,9 @@ void NSROOT::DBGNone()
 
 void NSROOT::DBG(int level, const char* fmt, ...)
 {
+  if (level > debug_ctx.cur_level)
+    return;
   va_list ap;
-
   va_start(ap, fmt);
   __dbg(&debug_ctx, level, fmt, ap);
   va_end(ap);