com.yahoo.vespa.model.builder.xml.dom.BinaryScaledAmountParser Maven / Gradle / Ivy
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.builder.xml.dom;
import com.yahoo.binaryprefix.BinaryPrefix;
import com.yahoo.binaryprefix.BinaryScaledAmount;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @author Tony Vaagenes
*/
public class BinaryScaledAmountParser {
// The pattern must match the one given in the schema
private static final Pattern pattern = Pattern.compile("(\\d+(\\.\\d*)?)\\s*([kmgKMG])?");
public static BinaryScaledAmount parse(String valueString) {
Matcher matcher = pattern.matcher(valueString);
if (!matcher.matches()) {
throw new RuntimeException("Pattern and schema is out of sync.");
}
double amount = Double.valueOf(matcher.group(1));
String binaryPrefixString = matcher.group(3);
return new BinaryScaledAmount(amount, asBinaryPrefix(binaryPrefixString));
}
private static BinaryPrefix asBinaryPrefix(String binaryPrefixString) {
if (binaryPrefixString == null) {
return BinaryPrefix.unit;
} else {
return BinaryPrefix.fromSymbol(binaryPrefixString.toUpperCase().charAt(0));
}
}
}