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#ifndef Pegasus_TraceHandler_h
#define Pegasus_TraceHandler_h

#include <cstdarg>
#include <cstdio>
#include <Pegasus/Common/String.h>
#include <Pegasus/Common/Linkage.h>

PEGASUS_NAMESPACE_BEGIN

/** TraceHandler is an abstract base class for all kinds of trace handlers.
 */

class PEGASUS_COMMON_LINKAGE TraceHandler
{
public:

    /** Writes message with format string to the tracing facility
        @param    message  message to be written
        @param    fmt      printf style format string
        @param    argList  variable argument list
     */
    virtual void handleMessage(const char* message,
                               const char* fmt,
                               va_list argList) = 0;

    /** Writes simple message to the tracing facility.
        @param    message  message to be written
     */
    virtual void handleMessage(const char* message) = 0;


    /** Sets and prepares the destination (e.g. traceFileName) for the
        trace handler.
        @param    destination tracer destination, e.g. file
        @return   0           if the function is successful
                  1           if an error occurs
     */
    virtual Uint32 setMessageDestination(const char* destination) {return 0;};

    /** Validates the File Path for the trace File
        @param    filePath full path of the file
        @return   1        if the file path is valid
                  0        if the file path is invalid
     */
    virtual Boolean isValidMessageDestination(const char* destination) 
        {return true;};
    
    TraceHandler() {};

    virtual ~TraceHandler() {};

    
};

PEGASUS_NAMESPACE_END

#endif /* Pegasus_TraceHandler_h */