Example usage for org.apache.commons.compress.bzip2 CBZip2InputStream read

Introduction

In this page you can find the example usage for org.apache.commons.compress.bzip2 CBZip2InputStream read.

Prototype

public int read(byte b[], int off, int len) throws IOException 

Source Link

Document

Reads up to len bytes of data from the input stream into an array of bytes.

Usage

From source file:ch.rgw.compress.CompEx.java

public static byte[] expand(InputStream in) {
    ByteArrayOutputStream baos;/*from w ww  .j  a  v  a2 s . c o  m*/
    byte[] siz = new byte[4];
    try {
        in.read(siz);
        long size = BinConverter.byteArrayToInt(siz, 0);
        long typ = size & ~0x1fffffff;
        size &= 0x1fffffff;
        byte[] ret = new byte[(int) size];

        switch ((int) typ) {
        case BZIP2:
            CBZip2InputStream bzi = new CBZip2InputStream(in);
            int off = 0;
            int l = 0;
            while ((l = bzi.read(ret, off, ret.length - off)) > 0) {
                off += l;
            }

            bzi.close();
            in.close();
            return ret;
        case GLZ:
            GLZ glz = new GLZ();
            baos = new ByteArrayOutputStream();
            glz.expand(in, baos);
            return baos.toByteArray();
        case HUFF:
            HuffmanInputStream hin = new HuffmanInputStream(in);
            off = 0;
            l = 0;
            while ((l = hin.read(ret, off, ret.length - off)) > 0) {
                off += l;
            }
            hin.close();
            return ret;
        case ZIP:
            ZipInputStream zi = new ZipInputStream(in);
            zi.getNextEntry();
            off = 0;
            l = 0;
            while ((l = zi.read(ret, off, ret.length - off)) > 0) {
                off += l;
            }

            zi.close();
            return ret;
        default:
            throw new Exception("Invalid compress format");
        }
    } catch (Exception ex) {
        ExHandler.handle(ex);
        return null;
    }

}

---