Major Update:

- Updated all Logged messages, standardised DebugLevel:
  - dlNone   - Show startup and stop
  - dlLow    - Show creation/destruction of Function Blocks and Local IO
  - dlMedium - Show connection events, eg. open/close
  - dlHigh   - Show data flow events
-LogCore:
  - LogMessage and ShowOutput uses va_list
    only run printf if DebugLevel correct
  - Remove global LogStr[] variable
- SelectableCore:
  - Implemented Auto-management of handles
    auto open on startup/fail/close
  - Changed simple Open/Close/Read/Write methods to inline
  - Do not set Select Write trigger for server socket
  - Memory leak, setting address twice on RemoteClient
  - Bug fix, only send handle out data if DebugLevel = dlHigh
  - Bug fix, do not Read/ProcessBuffer if no InputBuffer

LogCore.cpp

@@ -13,6 +13,7 @@
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
+#include <stdarg.h>
 
 //---------------------------------------------------------------------------
 
@@ -22,10 +23,12 @@ char            LogStr[1000];           // Temporary var to create log messages,
 
 //---------------------------------------------------------------------------
 
-bool LogMessage( const char * Heading, EDebugLevel Level, const char *Message )
+bool LogMessage( EDebugLevel Level, const char * Format, ... )
 {
+    va_list     ArgPtr;
+
     // Validate values
-    if (!Message)
+    if (!Format || !*Format)
         return false;
 
     // Check debug level
@@ -34,20 +37,20 @@ bool LogMessage( const char * Heading, EDebugLevel Level, const char *Message )
     }
 
     // Show normal output
-    if (!Heading) {
-        printf( "%s\n", Message );
-    }
-    else {
-        printf( "%s: %s\n", Heading, Message );
-    }
+    va_start( ArgPtr, Format );
+    vprintf( Format, ArgPtr );
+    printf( "\r\n" );
+    va_end( ArgPtr );
     return true;
 }
 //---------------------------------------------------------------------------
 
-bool ShowOutput( const char * Heading, EDebugLevel Level, const short Show, const char * Buffer, int Len )
+bool ShowOutput( EDebugLevel Level, const short Show, const char * Buffer, int Len, const char * Format, ... )
 {
+    va_list     ArgPtr;
+
     // Validate values
-    if (!Buffer)
+    if (!Buffer || !(Show & (OUT_HEX | OUT_NORMAL)))
         return false;
     if (Len == -1)
         Len = strlen( Buffer );
@@ -57,9 +60,16 @@ bool ShowOutput( const char * Heading, EDebugLevel Level, const short Show, cons
         return true;
     }
 
+    // Show Lead
+    if (Format && *Format) {
+        va_start( ArgPtr, Format );
+        vprintf( Format, ArgPtr );
+        va_end( ArgPtr );
+    }
+    printf( "[%d] ", Len );
+
     // Show Hex output
     if (Show & OUT_HEX) {
-        printf( "%s [%d]: ", Heading, Len );
         for (int i=0; i<Len; i++) {
             printf( "%02X ", Buffer[i] );
         }
@@ -68,7 +78,6 @@ bool ShowOutput( const char * Heading, EDebugLevel Level, const short Show, cons
 
     // Show normal output
     if (Show & OUT_NORMAL) {
-        printf( "%s [%d]: ", Heading, Len );
         if (Show & OUT_ASIS) {
             printf( "%s", Buffer );
         }