ch.qos.logback.decoder.cli.Main.java Source code

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Here is the source code for ch.qos.logback.decoder.cli.Main.java

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/**
 * Copyright (C) 2012, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.decoder.cli;

import ch.qos.logback.classic.Level;
import ch.qos.logback.decoder.BufferDecoder;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.InputStreamReader;

/**
 * Provides application entry point
 */
public final class Main {

    /**
     * Constructor not called
     */
    private Main() {
    }

    /**
     * Entry point for command-line interface
     *
     * @param args the command-line parameters
     */
    static public void main(String[] args) {
        MainArgs mainArgs = null;
        try {
            mainArgs = new MainArgs(args);

            // handle help and version queries
            if (mainArgs.queriedHelp()) {
                mainArgs.printUsage();
            } else if (mainArgs.queriedVersion()) {
                mainArgs.printVersion();

                // normal processing
            } else {
                if (mainArgs.isDebugMode()) {
                    enableVerboseLogging();
                }

                BufferDecoder decoder = new BufferDecoder();
                decoder.setLayoutPattern(mainArgs.getLayoutPattern());

                BufferedReader reader = null;
                if (StringUtils.defaultString(mainArgs.getInputFile()).isEmpty()) {
                    reader = new BufferedReader(new InputStreamReader(System.in));
                } else {
                    reader = new BufferedReader(new FileReader(mainArgs.getInputFile()));
                }

                decoder.decode(reader);
            }
        } catch (Exception e) {
            System.err.println("error: " + e.getMessage());
        }
    }

    static private void enableVerboseLogging() {
        ch.qos.logback.classic.Logger root = (ch.qos.logback.classic.Logger) LoggerFactory
                .getLogger(Logger.ROOT_LOGGER_NAME);
        root.setLevel(Level.TRACE);
    }
}