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SBT Compiler for SBT 0.12.x
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/*
 * Copyright 2013-2017 Grzegorz Slowikowski (gslowikowski at gmail dot com)
 *
 * Licensed 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.
 */

package com.google.code.sbt.compiler.sbt012;

import com.google.code.sbt.compiler.api.CompilerLogger;

import xsbti.F0;
import xsbti.Logger;

/**
 * SBT xsbti.Logger
 * wrapper around {@link CompilerLogger} delegate.
 * 
 * @author Grzegorz Slowikowski
 */
public class SBT012Logger
    implements Logger
{

    private CompilerLogger compilerLogger;

    private StringBuilder errors = new StringBuilder();

    /**
     * Creates SBT xsbti.Logger
     * wrapper around {@link CompilerLogger} delegate.
     * 
     * @param compilerLogger {@link CompilerLogger} delegate
     */
    public SBT012Logger( CompilerLogger compilerLogger )
    {
        this.compilerLogger = compilerLogger;
    }

    /**
     * Send a message to the user in the error error level
     * if the error error level is enabled.
     *
     * @param msg message
     */
    @Override
    public void error( F0 msg )
    {
        if ( compilerLogger.isErrorEnabled() )
        {
            String msgString = msg.apply();
            errors.append( msgString ).append( '\n' );
            compilerLogger.error( msgString );
        }
    }

    /**
     * Send a message to the user in the warn error level
     * if the warn error level is enabled.
     *
     * @param msg message
     */
    @Override
    public void warn( F0 msg )
    {
        if ( compilerLogger.isWarnEnabled() )
        {
            compilerLogger.warn( msg.apply() );
        }
    }

    /**
     * Send a message to the user in the info error level
     * if the info error level is enabled.
     *
     * @param msg message
     */
    @Override
    public void info( F0 msg )
    {
        if ( compilerLogger.isInfoEnabled() )
        {
            compilerLogger.info( msg.apply() );
        }
    }

    /**
     * Send a message to the user in the debug error level
     * if the debug error level is enabled.
     *
     * @param msg message
     */
    @Override
    public void debug( F0 msg )
    {
        if ( compilerLogger.isDebugEnabled() )
        {
            compilerLogger.debug( msg.apply() );
        }
    }

    /**
     * Send a message to the user in the trace error level
     * if the trace error level is enabled.
     *
     * @param exception exception thrown
     */
    @Override
    public void trace( F0 exception )
    {
        if ( compilerLogger.isDebugEnabled() )
        {
            compilerLogger.debug( exception.apply() );
        }
    }

    String[] getConsoleErrorLines()
    {
        return errors.toString().split( "\n" );
    }

}