/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.mahout.utils.vectors.arff;
public enum ARFFType {
NUMERIC("numeric"),
INTEGER("integer"),
REAL("real"),
NOMINAL("{"),
DATE("date"),
STRING("string");
private final String indicator;
ARFFType(String indicator) {
this.indicator = indicator;
}
public String getIndicator() {
return indicator;
}
public String getLabel(String line) {
int idx = line.lastIndexOf(indicator);
return removeQuotes(line.substring(ARFFModel.ATTRIBUTE.length(), idx));
}
/**
* Remove quotes and leading/trailing whitespace from a single or double quoted string
* @param str quotes from
* @return A string without quotes
*/
public static String removeQuotes(String str) {
String cleaned = str;
if (cleaned != null) {
cleaned = cleaned.trim();
boolean isQuoted = cleaned.length() > 1
&& (cleaned.startsWith("\"") && cleaned.endsWith("\"")
|| cleaned.startsWith("'") && cleaned.endsWith("'"));
if (isQuoted) {
cleaned = cleaned.substring(1, cleaned.length() - 1);
}
}
return cleaned;
}
}