net.oneandone.stool.util.Macros Maven / Gradle / Ivy

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/**
 * Copyright 1&1 Internet AG, https://github.com/1and1/
 *
 * 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 net.oneandone.stool.util;

import java.util.HashMap;
import java.util.Map;

public class Macros {

    private final Map macros;


    public Macros() {
        this.macros = new HashMap<>();
    }

    public void add(String key, String value) {
        macros.put(key, value);
    }

    public void addAll(Map all) {
        macros.putAll(all);
    }

    public String replace(String string) {
        return replace(string, '@', '@');
    }

    private String replace(String string, Character prefix, Character suffix) {
        String result;
        String key;

        if (string.indexOf(prefix) == -1) {
            return string;
        }
        result = string;
        for (Map.Entry macro : macros.entrySet()) {
            key = prefix + macro.getKey() + suffix;
            result = result.replace(key, macro.getValue());
        }

        return result;
    }
}