SVGGeneratorFormatUtils.java

/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed 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.kie.workbench.common.stunner.svg.gen.codegen.impl;

import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;

/**
 * As the generated values will end up in a source file, this utils class provides different methods
 * as for using concrete formatting behaviors common along all generated code.
 */
public class SVGGeneratorFormatUtils {

    private static final DecimalFormat DF = new DecimalFormat("#0.00") {{
        setDecimalFormatSymbols(new DecimalFormatSymbols() {{
            setDecimalSeparator('.');
            setGroupingUsed(false);
        }});
    }};

    public static String format(final double value) {
        return DF.format(value);
    }

    /**
     * As the generated values will end up in a source file, let's use a concrete formatting
     * for double values along all code generation.
     */
    public static String format(final String pattern,
                                final double... values) {
        final String[] raw = new String[values.length];
        for (int i = 0; i < values.length; i++) {
            raw[i] = DF.format(values[i]);
        }
        return String.format(pattern,
                             raw);
    }
}