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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.mapping;
import java.util.regex.Pattern;
public class NameValidator
{
private static final String IdentifierPattern;
private static final Pattern ClassPattern;
static
{
// java allows all kinds of weird characters...
StringBuilder startChars = new StringBuilder();
StringBuilder partChars = new StringBuilder();
for( int i = Character.MIN_CODE_POINT; i <= Character.MAX_CODE_POINT; i++ )
{
if( Character.isJavaIdentifierStart( i ) )
{
startChars.appendCodePoint( i );
}
if( Character.isJavaIdentifierPart( i ) )
{
partChars.appendCodePoint( i );
}
}
IdentifierPattern = String.format( "[\\Q%s\\E][\\Q%s\\E]*", startChars.toString(), partChars.toString() );
ClassPattern = Pattern.compile( String.format( "^(%s(\\.|/))*(%s)$", IdentifierPattern, IdentifierPattern ) );
}
public String validateClassName( String name )
{
if( !ClassPattern.matcher( name ).matches() )
{
throw new IllegalArgumentException( "Illegal name: " + name );
}
return classNameToJavaName( name );
}
public static String fileNameToClassName( String fileName )
{
final String suffix = ".class";
if( !fileName.endsWith( suffix ) )
{
return null;
}
return fileName.substring( 0, fileName.length() - suffix.length() ).replace( "/", "." );
}
public static String classNameToJavaName( String className )
{
return className.replace( ".", "/" );
}
}
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