Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.io.IOException;

import java.io.PushbackInputStream;

import java.util.zip.GZIPInputStream;

public class Main {
    /**
     * Checks the InputStream if it contains  GZIP compressed data
     *
     * @param inputStream InputStream to be checked
     * @return true or false if the stream contains GZIP compressed data
     * @throws java.io.IOException
     */
    public static boolean isInputStreamGZIPCompressed(final PushbackInputStream inputStream) throws IOException {
        if (inputStream == null)
            return false;

        byte[] signature = new byte[2];
        int readStatus = inputStream.read(signature);
        inputStream.unread(signature);
        int streamHeader = ((int) signature[0] & 0xff) | ((signature[1] << 8) & 0xff00);
        return readStatus == 2 && GZIPInputStream.GZIP_MAGIC == streamHeader;
    }
}