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package org.jruby.util.log;

import java.io.PrintStream;

/**
 * Default JRuby logger implementation, using {@link System.err}.
 */
public class StandardErrorLogger extends OutputStreamLogger {

    public StandardErrorLogger(String loggerName) {
        super(loggerName);
    }

    public StandardErrorLogger(Class loggerClass) {
        super(loggerClass.getSimpleName());
    }

    public StandardErrorLogger(String loggerName, PrintStream stream) {
        super(loggerName, stream);
    }

    @Override
    protected void write(String message, String level, Object[] args) {
        // NOTE: stream is intentionally not set to System.err
        // thus when its programatically redirected it works !
        PrintStream stream = this.stream;
        if ( stream == null ) stream = System.err;

        CharSequence suble = substitute(message, args);
        stream.println(formatMessage(suble, level));
    }

    @Override
    protected void write(String message, String level, Throwable throwable) {
        // NOTE: stream is intentionally not set to System.err
        // thus when its programatically redirected it works !
        PrintStream stream = this.stream;
        if ( stream == null ) stream = System.err;

        synchronized (stream) {
            stream.println(formatMessage(message, level));
            writeStackTrace(stream, throwable);
        }
    }

}