/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 *   
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/* $Rev$ $Date$ */

#include "commonj/sdo/Logger.h"
#include <iostream>
#include <stdarg.h>
#include "commonj/sdo/DefaultLogWriter.h"
#include <stdio.h>
#include <stdlib.h>
using namespace std;

namespace commonj
{
    namespace sdo
    {
        LogWriter* Logger::logWriter = getLogWriter();

        LogWriter* Logger::getLogWriter()
        {
            if (logWriter == 0)
            {
                setLogWriter(0);
            }
            return logWriter;
        }

        void Logger::setLogWriter(LogWriter* writer)
        {
            if (logWriter != writer)
            {
                delete logWriter;
            }

            if (writer == 0)
            {
                logWriter = new DefaultLogWriter;
            }
            else
            {
                logWriter = writer;
            }
        }

        int Logger::loggingLevel = setLogging();
        
        int Logger::setLogging()
        {
            char*  loggingVar = 0;
            loggingVar = getenv("TUSCANY_SDOCPP_LOGGING");
            if (loggingVar == 0)
                return 0;
            else
                return atoi(loggingVar);
        }
        
        void Logger::setLogging(int level)
        {
            loggingLevel = level;
        }
            
        void Logger::log(int indent, int level, const char* msg)
        {
            if (level <= loggingLevel)
            {
                logWriter->log(indent, level, msg);
            }
        }

        void Logger::logArgs(int indent, int level, const char* msg, ...)
        {
            if (level <= loggingLevel)
            {
                va_list variableArguments;
                va_start(variableArguments, msg);
                char messageBuffer[1024];
                vsprintf(messageBuffer, msg, variableArguments);
                logWriter->log(indent, level, messageBuffer);
                va_end(variableArguments);
            }
        }
        
    } // End namespace sdo
} // End namespace commonj