com.threewks.thundr.route.rewrite.Rewrite.java Source code

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Here is the source code for com.threewks.thundr.route.rewrite.Rewrite.java

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/*
 * This file is a component of thundr, a software library from 3wks.
 * Read more: http://3wks.github.io/thundr/
 * Copyright (C) 2014 3wks, <thundr@3wks.com.au>
 *
 * 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 com.threewks.thundr.route.rewrite;

import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.lang3.StringUtils;

import com.threewks.thundr.route.Route;
import com.threewks.thundr.route.RouteResult;

public class Rewrite implements RouteResult {
    private String rewriteTo;

    public Rewrite(String rewriteTo) {
        this.rewriteTo = rewriteTo;
    }

    public String getRewriteTo(Map<String, String> pathVars) {
        String finalRewrite = rewriteTo;

        Matcher matcher = Route.PathParameterPattern.matcher(rewriteTo);
        while (matcher.find()) {
            String token = matcher.group(1);
            finalRewrite = finalRewrite.replaceAll(Pattern.quote("{" + token + "}"),
                    Matcher.quoteReplacement(StringUtils.trimToEmpty(pathVars.get(token))));
        }
        return finalRewrite;
    }

    @Override
    public String toString() {
        return "Rewrite:" + rewriteTo;
    }

}