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/*******************************************************************************
* Copyright (c) 2014 Jeff Martin.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Public License v3.0
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/gpl.html
*
* Contributors:
* Jeff Martin - initial API and implementation
******************************************************************************/
package cuchaz.enigma;
import java.awt.Desktop;
import java.io.Closeable;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Arrays;
import java.util.jar.JarFile;
import javassist.CannotCompileException;
import javassist.CtClass;
import javassist.bytecode.Descriptor;
import com.google.common.io.CharStreams;
public class Util
{
public static int combineHashesOrdered( Object ... objs )
{
return combineHashesOrdered( Arrays.asList( objs ) );
}
public static int combineHashesOrdered( Iterable<Object> objs )
{
final int prime = 67;
int result = 1;
for( Object obj : objs )
{
result *= prime;
if( obj != null )
{
result += obj.hashCode();
}
}
return result;
}
public static void closeQuietly( Closeable closeable )
{
if( closeable != null )
{
try
{
closeable.close();
}
catch( IOException ex )
{
// just ignore any further exceptions
}
}
}
public static void closeQuietly( JarFile jarFile )
{
// silly library should implement Closeable...
if( jarFile != null )
{
try
{
jarFile.close();
}
catch( IOException ex )
{
// just ignore any further exceptions
}
}
}
public static String readStreamToString( InputStream in )
throws IOException
{
return CharStreams.toString( new InputStreamReader( in, "UTF-8" ) );
}
public static String readResourceToString( String path )
throws IOException
{
InputStream in = Util.class.getResourceAsStream( path );
if( in == null )
{
throw new IllegalArgumentException( "Resource not found! " + path );
}
return readStreamToString( in );
}
public static void openUrl( String url )
{
if( Desktop.isDesktopSupported() )
{
Desktop desktop = Desktop.getDesktop();
try
{
desktop.browse( new URI( url ) );
}
catch( IOException ex )
{
throw new Error( ex );
}
catch( URISyntaxException ex )
{
throw new IllegalArgumentException( ex );
}
}
}
public static void writeClass( CtClass c )
{
String name = Descriptor.toJavaName( c.getName() );
File file = new File( name + ".class" );
try( FileOutputStream out = new FileOutputStream( file ) )
{
out.write( c.toBytecode() );
}
catch( IOException | CannotCompileException ex )
{
throw new Error( ex );
}
}
}
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