SimpleZipFileCompressor

SimpleZipCompressor.java

package sandbox;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import org.apache.commons.io.IOUtils;

/**
 * SimpleZipCompressor
 * 
 * @author monzou
 */
class SimpleZipCompressor {

    private SimpleZipCompressor() {
    }

    static void zip(File source, File dest) throws IOException {

        BufferedOutputStream os = new BufferedOutputStream(new FileOutputStream(dest));
        ZipOutputStream zos = new ZipOutputStream(os);
        ZipEntry ze = new ZipEntry(source.getName());

        InputStream is = null;
        try {
            zos.putNextEntry(ze);
            is = new BufferedInputStream(new FileInputStream(source));
            byte[] buf = new byte[1024];
            int len;
            while ((len = is.read(buf)) > 0) {
                zos.write(buf, 0, len);
            }
        } finally {
            if (is != null) {
                IOUtils.closeQuietly(is);
            }
            try {
                zos.closeEntry();
            } finally {
                IOUtils.closeQuietly(zos);
            }
        }

        source.delete();

    }

    static void unzip(File source) throws IOException {

        ZipInputStream zis = new ZipInputStream(new FileInputStream(source));
        ZipEntry entry;
        try {
            while ((entry = zis.getNextEntry()) != null) {
                File dest = new File(source.getParent(), entry.getName());
                BufferedOutputStream os = new BufferedOutputStream(new FileOutputStream(dest));
                try {
                    int size;
                    byte[] buf = new byte[1024];
                    while ((size = zis.read(buf, 0, buf.length)) != -1) {
                        os.write(buf, 0, size);
                    }
                    os.flush();
                } finally {
                    IOUtils.closeQuietly(os);
                }
            }
        } finally {
            try {
                zis.closeEntry();
            } finally {
                IOUtils.closeQuietly(zis);
            }
        }

        source.delete();

    }
}