com.j2biz.pencil.Starter.java Source code

Introduction

Here is the source code for com.j2biz.pencil.Starter.java

Source

/* 
 * "Pencil - Log message compiler" is (c) 2004 Andreas Siebert (j2biz community)
 *
 * Author: Andreas Siebert.
 *  
 * This file is part of "Pencil - Log message compiler".
 *
 * "Pencil - Log message compiler" is free software; 
 * you can redistribute it and/or modify it under the terms of the GNU 
 * General Public License as published by the Free Software Foundation; 
 * either version 2 of the License, or (at your option) any later version.
 *
 * "Pencil - Log message compiler" is distributed in the hope 
 * that it will be useful, but WITHOUT ANY WARRANTY; without even 
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A 
 * PARTICULAR PURPOSE.  
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with "Pencil - Logger message compiler"; if not, 
 * write to the Free Software Foundation, Inc., 59 Temple Place, 
 * Suite 330, Boston, MA  02111-1307  USA
 * 
 */
package com.j2biz.pencil;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.MissingArgumentException;
import org.apache.commons.cli.MissingOptionException;
import org.apache.commons.cli.ParseException;
import org.grlea.log.SimpleLogger;

import com.j2biz.info.ConsoleErrorStatusLogger;
import com.j2biz.info.ErrorStatusLogger;
import com.j2biz.pencil.config.ConfigManager;

public class Starter {

    public static SimpleLogger LOG = new SimpleLogger(Starter.class);

    private final boolean sourceOptionEntered;

    private final boolean configOptionEntered;

    private final CommandLine line;

    Starter(final CommandLine line) {
        assert line != null;

        final CLIOptionParser cliParser = CLIOptionParser.getInstance();

        if (line.hasOption("h"))
            executeHelp(cliParser);

        this.line = line;

        this.sourceOptionEntered = line.hasOption(cliParser.getSourceOptionString());
        this.configOptionEntered = line.hasOption(cliParser.getConfigOptionString());

        if (configOptionEntered && sourceOptionEntered)
            exitCauseScrAndConfigAreEntered();

        if (configOptionEntered) {
            executeWithConfig(line);
        } else {
            final File srcPathFile;
            if (sourceOptionEntered) {
                final String fileName = line.getOptionValue(cliParser.getSourceOptionString());
                final File file = new File(fileName);
                if (file.exists()) {
                    srcPathFile = file;
                } else {
                    srcPathFile = new File(new File("").getAbsoluteFile(), fileName);
                }
            } else {
                srcPathFile = new File("");
            }

            if (!srcPathFile.exists()) {
                exitCauseSrcPathNotExist(srcPathFile);
            } else {
                final ErrorStatusLogger logger = new ConsoleErrorStatusLogger();
                final Enhancer enhancer;
                if (line.hasOption(cliParser.getPackagesOption())) {
                    final String[] packageNames = line.getOptionValues(cliParser.getPackagesOption());
                    final Source source = new Source(srcPathFile, packageNames);
                    final ClassManager manager = new ClassManager(new File(""), srcPathFile,
                            new Source[] { source }, null, logger);

                    enhancer = new Enhancer(manager, logger);
                } else {
                    enhancer = new Enhancer(srcPathFile, logger);
                }

                enhancer.enhance();
            }
        }
    }

    private void executeHelp(final CLIOptionParser cliParser) {
        cliParser.printHelpMessage(new PrintWriter(System.out));
        System.exit(0);
    }

    public Starter(final File configFile) {
        configOptionEntered = false;
        sourceOptionEntered = false;
        line = null;

        // wegen der initialisierung des Config-Parsers.
        CLIOptionParser.getInstance();
        executeWithConfig(configFile);
    }

    private void executeWithConfig(final CommandLine line) {
        File configFile = getConfigFile();

        final CLIOptionParser cliParser = CLIOptionParser.getInstance();

        if (!configFile.exists())
            exitCauseConfigPathNotExist(cliParser.getConfigOptionString(), line);

        executeWithConfig(configFile);
    }

    private void executeWithConfig(final File configFile) {
        final ClassManager manager = initManagerWithConfig(configFile);

        final Enhancer enhancer = new Enhancer(manager, new ConsoleErrorStatusLogger());

        enhancer.enhance();
    }

    private File getConfigFile() {
        final CLIOptionParser cliParser = CLIOptionParser.getInstance();

        final String configPath = line.getOptionValue(cliParser.getConfigOptionString());

        File configFile = new File(configPath);

        return configFile;
    }

    private ClassManager initManagerWithConfig(final File configFile) {
        final ClassManager manager;
        try {
            return ConfigManager.readConfiguration(configFile);
        } catch (FileNotFoundException x) {
            final CLIOptionParser cliParser = CLIOptionParser.getInstance();
            exitCauseConfigPathNotExist(cliParser.getConfigOptionString(), line, x);

            return null;
        }
    }

    public static void main(String[] args) {
        try {
            final CLIOptionParser cliParser = CLIOptionParser.getInstance();
            final CommandLine line = cliParser.parse(args);
            new Starter(line);
        } catch (MissingArgumentException e) {
            exitCauseMissingArgument(e);
        } catch (MissingOptionException e) {
            exitCauseMissingOption(e);
        } catch (ParseException e) {
            exitCauseParseException(e);
        }
    }

    private static void exitCauseParseException(ParseException e) {
        System.err.println("Parsing failed.  Reason: " + e.getMessage());
        System.exit(-1);
    }

    private static void exitCauseMissingOption(MissingOptionException e) {
        System.err.println("Missing Option: " + e.getMessage());
        System.exit(-1);
    }

    private static void exitCauseMissingArgument(MissingArgumentException e) {
        System.err.println("Missing Argument-Value. " + e.getMessage());
        System.exit(-1);
    }

    private static void exitCauseSrcPathNotExist(final File srcPathFile) {
        System.out.println("WARNING: src-path doesn't exists. please select an existing path.");
        System.out.println("WARNING: the selected src-path is: " + srcPathFile.getAbsolutePath());
        System.exit(-1);
    }

    private static void exitCauseConfigPathNotExist(final String config, CommandLine line,
            FileNotFoundException x) {
        System.out
                .println("WARNING: the entered config-path does not exist. path == " + line.getOptionValue(config));
        x.printStackTrace();
        System.exit(-1);
    }

    private static void exitCauseConfigPathNotExist(final String config, CommandLine line) {

        System.out.println("WARNING: the entered config-path does not exist. path");
        System.out.println("WARNING: entered path: " + line.getOptionValue(config));
        System.exit(-1);
    }

    private static void exitCauseScrAndConfigAreEntered() {
        System.out.println("WARNING: src-path option is allowed only if the config-option is not used.");
        System.exit(-1);
    }

}