Android InputStream Zip compress(InputStream is, OutputStream os)

Description

compress

License

Open Source License

Declaration

private static void compress(InputStream is, OutputStream os) 

Method Source Code

import java.io.*;

import java.util.zip.GZIPOutputStream;

public class Main {
    private static final int BUFFER = 1024;
    private static final String EXT = ".gz";

    @SuppressWarnings("UnusedDeclaration")
    public static byte[] compress(byte[] data) {
        ByteArrayInputStream bais = new ByteArrayInputStream(data);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        /* www  .java 2s .c om*/
        compress(bais, baos);

        byte[] output = baos.toByteArray();

        try {
            baos.flush();
        } catch (IOException e) {
            System.out.println(e.getMessage());
        } finally {
            try {
                baos.close();
            } catch (IOException e) {
                
            }

            try {
                bais.close();
            } catch (IOException e) {
                
            }

        }

        return output;
    }

    @SuppressWarnings("UnusedDeclaration")
    public static void compress(File file) throws Exception {
        compress(file, true);
    }

    private static void compress(File file, boolean delete)
            throws Exception {
        FileInputStream fis = new FileInputStream(file);
        FileOutputStream fos = new FileOutputStream(file.getPath() + EXT);

        compress(fis, fos);

        fis.close();
        fos.flush();
        fos.close();

        if (delete) {
            
            file.delete();
        }
    }

    private static void compress(InputStream is, OutputStream os) {

        GZIPOutputStream gos = null;
        try {
            gos = new GZIPOutputStream(os);
            int count;
            byte data[] = new byte[BUFFER];
            while ((count = is.read(data, 0, BUFFER)) != -1) {
                gos.write(data, 0, count);
            }

            gos.finish();

            gos.flush();
        } catch (IOException e) {
            System.out.println(e.getMessage());
        } finally {
            try {
                if (gos != null) {
                    gos.close();
                }
            } catch (IOException e) {
                
            }
        }

    }

    @SuppressWarnings("UnusedDeclaration")
    public static void compress(String path) throws Exception {
        compress(path, true);
    }

    @SuppressWarnings("SameParameterValue")
    private static void compress(String path, boolean delete)
            throws Exception {
        File file = new File(path);
        compress(file, delete);
    }
}

Related

1. unZipTo(InputStream paramInputStream, String paramString)
2. compress(InputStream is, OutputStream os)
3. compress(InputStream is, OutputStream os)