oracle.toplink.essentials.internal.weaving.StaticWeaveJAROutputHandler Maven / Gradle / Ivy

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package oracle.toplink.essentials.internal.weaving;

import java.io.IOException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.util.jar.JarEntry;
import java.util.jar.JarOutputStream;
import java.util.zip.ZipException;

/**
 * The class provides a set of methods to pack passing in entries into the sepcified archive file.
 * the class JAR output.
 */
public class StaticWeaveJAROutputHandler extends AbstractStaticWeaveOutputHandler{

    /**
     * Construct an instance of StaticWeaveJAROutputHandler
     * @param outputStreamHolder
     */
    public StaticWeaveJAROutputHandler(JarOutputStream outputStreamHolder){
        super.outputStreamHolder=outputStreamHolder;
    }
    
    /**
     * Add directory entry into outputstream.
     * @param dirPath
     * @throws IOException
     */
    public void addDirEntry(String dirPath)throws IOException {
        try{
            JarEntry newEntry = new JarEntry(dirPath);
            newEntry.setSize(0);
            addEntry(newEntry, null);
        }catch(ZipException e){
            //ignore duplicate directory entry exceptions.
        }
    }
    
    /**
     * Write entry bytes into target, this method is usually called if class has been tranformed
     * @param targetEntry
     * @param entryBytes
     * @throws IOException
     */
    public void addEntry(JarEntry targetEntry,byte[] entryBytes)throws IOException{
        outputStreamHolder.putNextEntry(targetEntry);
        if(entryBytes!=null){
            outputStreamHolder.write(entryBytes);
        }
        outputStreamHolder.closeEntry();
    }
    
    /**
     * Write entry into target, this method usually copy original class into target.
     * @param jis
     * @param entry
     * @throws IOException
     */
    public void addEntry(InputStream jis,JarEntry entry) throws IOException,URISyntaxException {    
        outputStreamHolder.putNextEntry(entry);
        if(!entry.isDirectory()){
           readwriteStreams(jis,outputStreamHolder);
        }
        outputStreamHolder.closeEntry();
    }
}