com.javafxpert.wikibrowser.WikiPageController.java Source code

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Here is the source code for com.javafxpert.wikibrowser.WikiPageController.java

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/*
 * Copyright 2015 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 com.javafxpert.wikibrowser;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.stream.Collectors;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Created by jamesweaver on 11/29/15.
 */
@RestController
@EnableAutoConfiguration
public class WikiPageController {
    private Log log = LogFactory.getLog(getClass());

    private final WikiBrowserProperties wikiBrowserProperties;

    @Autowired
    public WikiPageController(WikiBrowserProperties wikiBrowserProperties) {
        this.wikiBrowserProperties = wikiBrowserProperties;
    }

    /**
     *
     */
    @RequestMapping("/wikipage")
    String generateWikiBrowserPage(
            @RequestParam(value = "name", defaultValue = "Ada_Lovelace") String wikipediaPageName,
            @RequestParam(value = "lang") String lang) throws Exception {

        String language = wikiBrowserProperties.computeLang(lang);

        String mWikipediaBase = String.format(WikiClaimsController.WIKIPEDIA_MOBILE_BASE_TEMPLATE, language);
        String mWikipedia = String.format(WikiClaimsController.WIKIPEDIA_MOBILE_TEMPLATE, language);
        String mWikipediaPage = mWikipedia + wikipediaPageName;

        URL url = new URL(mWikipediaPage);
        InputStream inputStream = url.openStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));

        String pageText = reader.lines().collect(Collectors.joining("\n"));
        pageText = pageText.replaceAll("\\\"/w/", "\"" + mWikipediaBase + "w/");
        pageText = pageText.replaceAll("\\\"/images/", "\"" + mWikipediaBase + "images/");
        pageText = pageText.replaceAll("\\\"/static/", "\"" + mWikipediaBase + "static/");

        pageText = pageText.replaceAll("\\\"href\\\":\\\"/w/", "\"href\":\"" + mWikipediaBase + "w/");
        pageText = pageText.replaceAll("\\\"href\\\":\\\"/wiki/", "\"href\":\"" + mWikipedia);

        pageText = pageText.replaceAll("href=\\\"/wiki/", "href=\"" + "/wikipage?lang=" + language + "&name=");

        pageText = pageText.replaceAll("href=\\\"//", "target=\"_blank\" href=\"//");

        pageText = pageText.replaceAll("href=\\\"http", "target=\"_blank\" href=\"http");

        // Remove the search menu at the top of the page
        int searchAnchorStartPos = pageText.indexOf("<a title");
        if (searchAnchorStartPos > 0) {
            int searchAnchorEndPos = pageText.indexOf("</a>", searchAnchorStartPos);
            if (searchAnchorEndPos > 0) {
                pageText = pageText.substring(0, searchAnchorStartPos)
                        + pageText.substring(searchAnchorEndPos + "</a>".length());
            }
        }

        // Remove the search form at the top of the page
        int searchFormStartPos = pageText.indexOf("<form");
        if (searchFormStartPos > 0) {
            int searchFormEndPos = pageText.indexOf("</form>", searchFormStartPos);
            if (searchFormEndPos > 0) {
                pageText = pageText.substring(0, searchFormStartPos)
                        + pageText.substring(searchFormEndPos + "</form>".length());
            }
        }

        return pageText;
    }
}