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ZipWriter.javaAPI DocGlassfish v2 API9296Fri May 04 22:32:42 BST 2007com.sun.enterprise.util.zip

ZipWriter

public class ZipWriter extends Object

Fields Summary
private String
dirName
private ZipOutputStream
zipStream
private byte[]
buffer
private ZipItem[]
items
Constructors Summary
public ZipWriter(String zipFilename, String dirName)

		init(zipFilename, dirName);
		createItemList(null);
public ZipWriter(String zipFilename, String dirName, ZipItem[] theItems)

		items = theItems;
		init(zipFilename, dirName);
public ZipWriter(String zipFilename, String dirName, String[] fileList)

		init(zipFilename, dirName);
		createItemList(fileList);
public ZipWriter(OutputStream outStream, String dirName, String[] fileList)

		init(outStream, dirName);
		createItemList(fileList);
Methods Summary
private voidaddEntry(ZipItem item)

		int					totalBytes	= 0;
		FileInputStream		in			= new FileInputStream(item.file);
		ZipEntry			ze			= new ZipEntry(item.name);
		
		zipStream.putNextEntry(ze);

		for(int numBytes = in.read(buffer); numBytes > 0; numBytes = in.read(buffer))
		{
			zipStream.write(buffer, 0, numBytes);
			totalBytes += numBytes;
		}
		
		/* Bug 4753245
		 * WBN 11/22/02
		 * The in.close() method was missing -- causing problems when trying to delete this file in
		 * other code -- at least until the garbage collector gets around to closing it.
		 * Normally I wouldn't put this inside a try/catch -- an error ought to be returned,
		 * but this is a special low-risk-toleration time.  Adding the try/catch is safer.  The
		 * code will behave exactly like before if an Exception is thrown.  It can't possibly hurt anything
		 * to add the close()
		 */
		try	// note: feel free to remove this try sometime in the future!
		{
			in.close();
		}
		catch(Exception e)
		{
			// ignore it
			Reporter.warn("Couldn't close the FileInputStream for the file: " + item.file);
		}
		
		zipStream.closeEntry();
		Reporter.verbose("Wrote " + item.name + " to Zip File.  Wrote " + totalBytes + " bytes.");
private voidcreateItemList(java.lang.String[] files)

		try
		{
			if(files == null)
			{
				FileListerRelative lister = new FileListerRelative(new File(dirName));
				files = lister.getFiles();
			}

			if(files.length <= 0)
				throw new ZipFileException("No files to add!");

			items = new ZipItem[files.length];

			for(int i = 0; i < files.length; i++)
			{
				File f = new File(dirName + files[i]);
				items[i] = new ZipItem(f, files[i].replace('\\", '/"));	// just in case...
			}
		}
		catch(Throwable t)
		{
			throw new ZipFileException(t);
		}
java.lang.StringgetDirName()

		return dirName;
private voidinit(java.lang.String outFileName, java.lang.String dirName)

		try
		{
			init(new FileOutputStream(outFileName), dirName);
		}
		catch(Exception e)
		{
			throw new ZipFileException(e);
		}
private voidinit(java.io.OutputStream outStream, java.lang.String dirName)

		try
		{
			// note -- these asserts will be caught & repackaged as a ZipFileException
			Reporter.insist(dirName);
			
			//make sure it's really a directory
			File f = new File(dirName);
			Reporter.insist(f.exists(),		"directory (" + dirName + ") doesn't exist");
			Reporter.insist(f.isDirectory());
			
			// change the filename to be full-path & UNIX style
			try
			{
				dirName = f.getCanonicalPath();
			}
			catch(IOException e)
			{
				Reporter.warn("Couldn't getCanonicalPath() for " + dirName);
			}
			
			dirName = dirName.replace('\\", '/");	// all UNIX-style filenames...
			
			
			// we need the dirname to end in a '/'
			if(!dirName.endsWith("/"))
				dirName += "/";

			
			this.dirName		= dirName;
			zipStream			= new ZipOutputStream(outStream);
		}
		catch(Throwable t)
		{
			throw new ZipFileException(t);
		}
public static voidmain(java.lang.String[] args)

		Reporter.setSeverityLevel(0);
		
		if(args == null || args.length != 2)
			usage();
		
		try
		{
			ZipWriter zw = new ZipWriter(args[0], args[1]);
			zw.write();
			Reporter.verbose("" + zw);
		}
		catch(ZipFileException e)
		{
			Reporter.verbose("ZipFileException: " + e);
			System.exit(0);
		}
public voidsafeWrite()
Does not throw an exception when there is a duplicate zip entry.

throws
ZipFileException if an error while creating the archive

		try
		{
			for(int i = 0; i < items.length; i++)
			{
                try 
                {
                    addEntry(items[i]);
                } 
                catch (ZipException e) 
                {
                    // ignore - duplicate zip entry
                }
			}
			
			zipStream.close();
		}
		catch(ZipFileException z)
		{
			Reporter.critical(new StackTrace(z));
			throw z;
		}
		catch(Exception e)
		{
			Reporter.critical(new StackTrace(e));
			throw new ZipFileException(e);
		}
private static voidusage()

		System.out.println("usage: java com.elf.util.zip.ZipWriter zip-filename directory-name");
		System.exit(1);
public voidwrite()

		try
		{
			for(int i = 0; i < items.length; i++)
			{
				addEntry(items[i]);
			}
			
			zipStream.close();
		}
		catch(ZipFileException z)
		{
			Reporter.critical(new StackTrace(z));
			throw z;
		}
		catch(Exception e)
		{
			Reporter.critical(new StackTrace(e));
			throw new ZipFileException(e);
		}