InputStream

package buffer;

public final class InputStream extends Stream {

    public InputStream(final byte[] buffer) {
        super(buffer);
    }

    private byte get(final int index) {
        return buffer[index];
    }

    public byte get() {
        return get(index++);
    }

    public short getShort(final boolean bigEndian) {
        if (bigEndian) {
            return (short) ((get(index) << 8) + (get(++index) & 0xff));
        }
        return (short) ((get(index) & 0xff) + (get(++index) << 8));
    }

    public short getShort() {
        return getShort(true);
    }

    public int getInt(final boolean bigEndian) {
        if (bigEndian) {
            return (get() << 24) + ((get() & 0xff) << 16) + ((get() & 0xff) << 8) + (get() & 0xff);
        }
        return (get() & 0xff) + ((get() & 0xff) << 8) + ((get() & 0xff) << 16) + (get() << 24);
    }

    public int getInt() {
        return getInt(true);
    }

    public long getLong(final boolean bigEndian) {
        if (bigEndian) {
            return ((long) get() << 56) + ((get() & 0xffL) << 48) + ((get() & 0xffL) << 40) + ((get() & 0xffL) << 32) + ((get() & 0xffL) << 24) + ((get() & 0xff) << 16)
                    + ((get() & 0xff) << 8) + (get() & 0xff);
        }
        return (get() & 0xff) + ((get() & 0xff) << 8) + ((get() & 0xff) << 16) + ((get() & 0xffL) << 24) + ((get() & 0xffL) << 32) + ((get() & 0xffL) << 40)
                + ((get() & 0xffL) << 48) + ((long) get() << 56);
    }

    public long getLong() {
        return getLong(true);
    }
}