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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.gui;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
public class SourceFormatter
{
public static String format( String in )
{
return collapseNewlines( in );
}
private static String collapseNewlines( String in )
{
StringBuffer buf = new StringBuffer();
int numBlankLines = 0;
BufferedReader reader = new BufferedReader( new StringReader( in ) );
String line = null;
try
{
while( ( line = reader.readLine() ) != null )
{
// how blank lines is this?
boolean isBlank = line.trim().length() == 0;
if( isBlank )
{
numBlankLines++;
// stop printing blank lines after the first one
if( numBlankLines < 2 )
{
buf.append( line );
buf.append( "\n" );
}
}
else
{
numBlankLines = 0;
buf.append( line );
buf.append( "\n" );
}
}
}
catch( IOException ex )
{
// StringReader will never throw an IOExecption here...
}
return buf.toString();
}
}
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