FileArchive.java

package org.objectweb.jonas_lib.genbase.archive;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Vector;
import java.util.jar.Manifest;

import org.objectweb.jonas_lib.genbase.GenBaseException;


public class FileArchive extends AbsArchive {

    public FileArchive(File archive) throws GenBaseException {
        super(archive);

        try {
            File mf = new File(archive, "META-INF" + File.separator + "MANIFEST.MF");

            if (mf.exists()) {
                setManifest(new Manifest(new FileInputStream(mf)));
            } else {
                setManifest(new Manifest());
            }
        } catch (Exception e) {
            String err = getI18n().getMessage("FileArchive.constr.manifest", getRootFile());
            throw new GenBaseException(err, e);
        }
    }

    public InputStream getInputStream(String filename) throws IOException {
        File file = (File) getFiles().get(filename);

        if (file == null) {
            // filename not found in added files
            // try root search
            file = new File(getRootFile(), filename);

            if (!file.exists()) {
                return null;
            }
        }

        // file exists (in added files or in original archive)
        return new FileInputStream(file);
    }

    public List getContainedFiles() {
        List list = new Vector(getFiles().keySet());

        // add files of the original archive
        traverse("", getRootFile(), list);

        return list;
    }

    private static void traverse(String dirName, File base, List map) {
        File[] childs = base.listFiles();

        // directory exists ?
        if (childs != null) {
            for (int i = 0; i < childs.length; i++) {
                if (childs[i].isFile()) {
                    // File
                    map.add(dirName + childs[i].getName());
                } else {
                    // Directory
                    traverse(dirName + childs[i].getName() + File.separator, childs[i], map);
                }
            }
        }
    }

    public boolean isPacked() {
        return false;
    }
}

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