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/*
* This file is available under and governed by the GNU General Public
* License version 2 only, as published by the Free Software Foundation.
* However, the following notice accompanied the original version of this
* file:
*
* The MIT License
*
* Copyright (c) 2004-2014 Paul R. Holser, Jr.
*
* Permission is hereby granted, free of charge, to any person obtaining
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package jdk.internal.joptsimple.util;
import java.text.MessageFormat;
import java.util.EnumSet;
import java.util.Iterator;
import java.util.ResourceBundle;
import jdk.internal.joptsimple.ValueConversionException;
import jdk.internal.joptsimple.ValueConverter;
/**
* Converts values to {@link java.lang.Enum}s.
*
* @author <a href="mailto:christian.ohr@gmail.com">Christian Ohr</a>
*/
public abstract class EnumConverter<E extends Enum<E>> implements ValueConverter<E> {
private final Class<E> clazz;
private String delimiters = "[,]";
/**
* This constructor must be called by subclasses, providing the enum class as the parameter.
*
* @param clazz enum class
*/
protected EnumConverter( Class<E> clazz ) {
this.clazz = clazz;
}
@Override
public E convert( String value ) {
for ( E each : valueType().getEnumConstants() ) {
if ( each.name().equalsIgnoreCase( value ) ) {
return each;
}
}
throw new ValueConversionException( message( value ) );
}
@Override
public Class<E> valueType() {
return clazz;
}
/**
* Sets the delimiters for the message string. Must be a 3-letter string,
* where the first character is the prefix, the second character is the
* delimiter between the values, and the 3rd character is the suffix.
*
* @param delimiters delimiters for message string. Default is [,]
*/
public void setDelimiters( String delimiters ) {
this.delimiters = delimiters;
}
@Override
public String valuePattern() {
EnumSet<E> values = EnumSet.allOf( valueType() );
StringBuilder builder = new StringBuilder();
builder.append( delimiters.charAt(0) );
for ( Iterator<E> i = values.iterator(); i.hasNext(); ) {
builder.append( i.next().toString() );
if ( i.hasNext() )
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