content: /*
  * Copyright (C) 2012 by Xavier GOUCHET (http://xgouchet.fr, android@xgouchet.fr) MIT Licence / Expat
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
  * associated documentation files (the "Software"), to deal in the Software without restriction,
  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in all copies or
  * substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
  * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS ( XAVIER GOUCHET ) BE LIABLE FOR ANY CLAIM, DAMAGES
  * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
  * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
  
  package fr.xgouchet.axml;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.InputStream;
  
  public final class CompressedXmlUtils {
  
  	public static boolean isCompressedXml(final InputStream input) {
  		boolean result;
  
  		try {
  			final byte[] header = new byte[4];
  			input.read(header, 0, 4);
  
  			result = true;
  			result &= (header[0] == 0x03);
  			result &= (header[1] == 0x00);
  			result &= (header[2] == 0x08);
  			result &= (header[3] == 0x00);
  
  		} catch (Exception e) {
  			result = false;
  		} finally {
  			try {
  				input.close();
  			} catch (Exception e) {
  				// ignore this exception
  			}
  		}
  
  		return result;
  	}
  
  	public static boolean isCompressedXml(final File source) {
  		boolean result;
  
  		try {
  			final InputStream input = new FileInputStream(source.getPath());
  			result = isCompressedXml(input);
  		} catch (Exception e) {
  			result = false;
  		}
  
  		return result;
  	}
  
  	private CompressedXmlUtils() {
  	}
  }
  