Java - parse log file, extract filelist and append to each file something

AppendToFile.java

package io.klib.tools.files;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class AppendToFile {

    private static final String APPENDIX        = " ";

    private static final Logger log             = Logger.getLogger(AppendToFile.class.getName());

    static String               filenamePattern =
            "([a-zA-Z0-9.-_]+[_64|_32]?)_([0-9]*\\.[0-9]*\\.[0-9]*[\\.a-zA-Z0-9-_]+)";

    public static void main(String[] args) {
        String workspace = "";
        String logFile = "";
        if (args.length == 2) {
            workspace = args[0];
            logFile = args[1];
        }
        else {
            System.out.println("usage: <appendToFile> <pathToBuildLogFile> <pathToWorkspace>");
            System.exit(0);
        }

        String content;
        Path path;
        try {
            content = new String(Files.readAllBytes(Paths.get(logFile)));
            Pattern p =
                    Pattern.compile(".*?\\[java\\] ### files with lower versions \\[TROUBLE\\]\\s*(.*?)\\[java\\] done\\..*?",
                                    Pattern.DOTALL);
            Matcher matcher = p.matcher(content);
            if (matcher.find()) {
                String troubleSection = matcher.group(1);
                String linePatternString = ".*?\\[java\\] file " + filenamePattern + "\\.jar.*";
                Pattern filePattern = Pattern.compile(linePatternString);
                Matcher fnm = filePattern.matcher(troubleSection);
                while (fnm.find()) {
                    String bundleName = fnm.group(1);
                    path = Paths.get(workspace, bundleName, ".project");
                    if (path.toFile().exists()) {
                        Files.write(path, APPENDIX.getBytes("utf-8"), StandardOpenOption.APPEND);
                        log.info("project file with path " + path + " -> patched");
                    }
                    else {
                        log.fine("case bnd project, so trying to patch only the bnd bundle descriptor file first");
                        String bndBundleName = bundleName.substring(0, bundleName.lastIndexOf("."));
                        String bndFile = bundleName.substring(bundleName.lastIndexOf(".") + 1);
                        path = Paths.get(workspace, bndBundleName, bndFile + ".bnd");
                        if (path.toFile().exists()) {
                            Files.write(path, APPENDIX.getBytes("utf-8"), StandardOpenOption.APPEND);
                            log.info("bnd file with path " + path + " -> patched");
                        }
                        else {
                            log.fine("case bnd bundles descriptor file not found, hence patching the project file");
                            path = Paths.get(workspace, bndBundleName, ".project");
                            if (path.toFile().exists()) {
                                Files.write(path, APPENDIX.getBytes("utf-8"), StandardOpenOption.APPEND);
                                log.info("project file with path " + path + " -> patched");
                            }
                            else {
                                log.severe("project " + bundleName + " and parent not found - fix me manually");
                            }

                        }
                    }
                }
            }
        }
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        System.out.println("done.");
    }

}