ratpack.http.internal.DefaultHttpUriBuilder.java Source code

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Here is the source code for ratpack.http.internal.DefaultHttpUriBuilder.java

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/*
 * Copyright 2014 the original author or authors.
 *
 * 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 ratpack.http.internal;

import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Multimap;
import com.google.common.escape.Escaper;
import com.google.common.net.UrlEscapers;
import ratpack.func.Action;
import ratpack.http.HttpUriBuilder;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.Set;

public class DefaultHttpUriBuilder implements HttpUriBuilder {

    private String host;
    private String path;
    private String pathComponent;
    private String protocol;
    private String queryParams;

    private int port;

    private Multimap<String, String> params;

    private Escaper escaper;

    public DefaultHttpUriBuilder() {
        this.protocol = "http://";
        this.path = "";
        this.pathComponent = "";
        this.port = -1;
        this.params = ArrayListMultimap.create();
        this.queryParams = "";
    }

    @Override
    public HttpUriBuilder secure() {
        this.protocol = "https://";
        return this;
    }

    @Override
    public HttpUriBuilder host(String host) {
        escaper = UrlEscapers.urlFragmentEscaper();
        this.host = escaper.escape(host);
        return this;
    }

    @Override
    public HttpUriBuilder port(int port) {
        this.port = port;
        return this;
    }

    @Override
    public HttpUriBuilder path(String path) {
        escaper = UrlEscapers.urlFragmentEscaper();
        this.path += "/" + escaper.escape(path);
        return this;
    }

    @Override
    public HttpUriBuilder pathComponent(String pathComponent) {
        escaper = UrlEscapers.urlPathSegmentEscaper();

        if (!this.pathComponent.isEmpty()) {
            this.pathComponent += escaper.escape("/" + pathComponent);
        } else {
            this.pathComponent += String.format("/%s", escaper.escape(pathComponent));
        }
        return this;
    }

    @Override
    public HttpUriBuilder params(Action<? super Multimap<String, String>> params) throws Exception {
        params.execute(this.params);
        buildParameterString();
        return this;
    }

    private void buildParameterString() {
        Set<String> keySet = this.params.keySet();

        for (String key : keySet) {

            Object[] paramValues = this.params.get(key).toArray();
            for (Object param : paramValues) {
                if (queryParams.equals("")) {
                    queryParams = String.format("?%s=%s", key, param);
                } else {
                    queryParams += String.format("&%s=%s", key, param);
                }
            }
        }
        escaper = UrlEscapers.urlFormParameterEscaper();
        queryParams = escaper.escape(queryParams);
    }

    @Override
    public URI build() throws URISyntaxException {
        URI uri = new URI(this.toString());
        return uri;
    }

    @Override
    public String toString() {

        String uri = protocol + host;
        uri += port != -1 ? String.format("%s%d", ":", port) : "";
        uri += path + pathComponent + queryParams;

        return uri;
    }
}