bundleplugin/src/main/java/aQute/lib/osgi/ZipResource.java

/* Copyright 2006 aQute SARL 
 * Licensed under the Apache License, Version 2.0, see http://www.apache.org/licenses/LICENSE-2.0 */
package aQute.lib.osgi;

import java.io.*;
import java.util.*;
import java.util.regex.*;
import java.util.zip.*;

public class ZipResource implements Resource {
	ZipFile		zip;
	ZipEntry	entry;
	long		lastModified;
	String		extra;
	
	ZipResource(ZipFile zip, ZipEntry entry, long lastModified) {
		this.zip = zip;
		this.entry = entry;
		this.lastModified = lastModified;
	}

	public InputStream openInputStream() throws IOException {
		return zip.getInputStream(entry);
	}

	public String toString() {
		return ":" + entry.getName() + ":";
	}

	public static ZipFile build(Jar jar, File file) throws ZipException,
			IOException {
		return build(jar, file, null);
	}

	public static ZipFile build(Jar jar, File file, Pattern pattern)
			throws ZipException, IOException {

		try {
			ZipFile zip = new ZipFile(file);
			nextEntry: for (Enumeration<? extends ZipEntry> e = zip.entries(); e.hasMoreElements();) {
				ZipEntry entry = e.nextElement();
				if (pattern != null) {
					Matcher m = pattern.matcher(entry.getName());
					if (!m.matches())
						continue nextEntry;
				}
				if (!entry.isDirectory()) {
					long time = entry.getTime();
					if ( time <= 0 )
						time = file.lastModified();
					jar.putResource(entry.getName(), new ZipResource(zip,
							entry, time), true);
				}
			}
			return zip;
		} catch (FileNotFoundException e) {
			throw new IllegalArgumentException("Problem opening JAR: "
					+ file.getAbsolutePath());
		}
	}

	public void write(OutputStream out) throws IOException {
		FileResource.copy(this, out);
	}

	public long lastModified() {
		return lastModified;
	}

	public String getExtra() {
		return extra;
	}

	public void setExtra(String extra) {
		this.extra = extra;
	}

}