Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2015-2016 Emanuel Moecklin
 *
 * 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.
 */

import android.net.Uri;

import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URLDecoder;
import java.net.URLEncoder;

import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;

import java.util.Map;

public class Main {

    public static String encodeUrl(String url) {
        Uri uri = Uri.parse(url);

        try {
            Map<String, List<String>> splitQuery = splitQuery(uri);
            StringBuilder encodedQuery = new StringBuilder();
            for (String key : splitQuery.keySet()) {
                for (String value : splitQuery.get(key)) {
                    if (encodedQuery.length() > 0) {
                        encodedQuery.append("&");
                    }
                    encodedQuery.append(key + "=" + URLEncoder.encode(value, "UTF-8"));
                }
            }
            String queryString = encodedQuery != null && encodedQuery.length() > 0 ? "?" + encodedQuery : "";

            URI baseUri = new URI(uri.getScheme(), uri.getAuthority(), uri.getPath(), null, uri.getFragment());
            return baseUri + queryString;
        } catch (UnsupportedEncodingException ignore) {
        } catch (URISyntaxException ignore) {
        }

        return uri.toString();
    }

    /**
     * Splits the query parameters into key value pairs.
     * See: http://stackoverflow.com/a/13592567/534471.
     */
    private static Map<String, List<String>> splitQuery(Uri uri) throws UnsupportedEncodingException {
        final Map<String, List<String>> query_pairs = new LinkedHashMap<>();
        String query = uri.getQuery();
        if (query == null)
            return query_pairs;

        final String[] pairs = query.split("&");
        for (String pair : pairs) {
            final int idx = pair.indexOf("=");
            final String key = idx > 0 ? URLDecoder.decode(pair.substring(0, idx), "UTF-8") : pair;
            if (!query_pairs.containsKey(key)) {
                query_pairs.put(key, new LinkedList<String>());
            }
            final String value = idx > 0 && pair.length() > idx + 1
                    ? URLDecoder.decode(pair.substring(idx + 1), "UTF-8")
                    : "";
            query_pairs.get(key).add(value);
        }
        return query_pairs;
    }
}