--- /dev/null
+/*
+ * Copyright (c) 2017-2019. Developed by Hedgecode.
+ *
+ * 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 org.hedgecode.snooker;
+
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import javax.imageio.ImageIO;
+
+import org.hedgecode.snooker.api.APIException;
+import org.hedgecode.snooker.api.SnookerURL;
+
+/**
+ * Utils for working with URLs.
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public final class SnookerURLUtils {
+
+ private static final String CRLF = System.lineSeparator();
+
+ private static final String HTTP_REGEX = "(http[s]?://.+)";
+ private static final String ANCHOR_REGEX = "<a href=\"([^\"]+)\"[^>]*>([^<]+)</a>";
+
+ private static final Pattern HTTP_PATTERN = Pattern.compile(HTTP_REGEX);
+ private static final Pattern ANCHOR_PATTERN = Pattern.compile(ANCHOR_REGEX);
+
+ private static final String BR_REGEX = "<[Bb][Rr][ /]*>";
+ private static final String TAG_REGEX = "<[^>]+>";
+
+ private static final String TWITTER_URL = "https://twitter.com/";
+ private static final String TWITTER_HASHTAG = "hashtag/";
+
+ public static List<SnookerURL> parseUrls(Map<String, String> htmlStrings) throws APIException {
+ List<SnookerURL> result = new ArrayList<>();
+ htmlStrings.forEach( (name, htmlString) -> {
+ Matcher matcher = ANCHOR_PATTERN.matcher(htmlString);
+ while (matcher.find()) {
+ try {
+ URL url = new URL(matcher.group(1));
+ String text = matcher.group(2);
+ result.add(
+ new SnookerURL(text, url)
+ );
+ } catch (IOException ignored) {
+ }
+ }
+ });
+ return result;
+ }
+
+ public static List<SnookerURL> assignUrls(Map<String, String> urlStrings) throws APIException {
+ List<SnookerURL> result = new ArrayList<>();
+ urlStrings.forEach( (name, urlString) -> {
+ Matcher matcher = HTTP_PATTERN.matcher(urlString);
+ if (matcher.find()) {
+ try {
+ URL url = new URL(matcher.group(1));
+ result.add(
+ new SnookerURL(name, url)
+ );
+ } catch (IOException ignored) {
+ }
+ }
+ });
+ return result;
+ }
+
+ public static SnookerURL assignUrl(String name, String urlString) throws APIException {
+ SnookerURL result = null;
+ URL url = assignUrl(urlString);
+ if (url != null) {
+ result = new SnookerURL(name, url);
+ }
+ return result;
+ }
+
+ public static URL assignUrl(String urlString) throws APIException {
+ URL result = null;
+ if (urlString != null && !urlString.isEmpty()) {
+ Matcher matcher = HTTP_PATTERN.matcher(urlString);
+ if (matcher.find()) {
+ try {
+ result = new URL(matcher.group(1));
+ } catch (IOException e) {
+ throw new APIException(
+ APIException.Type.INFO, "Failed to recognize URL: " + e.getMessage()
+ );
+ }
+ }
+ }
+ return result;
+ }
+
+ public static String cutTags(String htmlString) {
+ if (htmlString != null && !htmlString.isEmpty()) {
+ return htmlString.replaceAll(
+ BR_REGEX, CRLF
+ ).replaceAll(
+ TAG_REGEX, ""
+ );
+ }
+ return htmlString;
+ }
+
+ public static BufferedImage loadImage(URL imageUrl) throws APIException {
+ BufferedImage result;
+ try {
+ result = ImageIO.read(imageUrl);
+ } catch (IOException e) {
+ throw new APIException(
+ APIException.Type.INFO, "Failed to load image at the address: " + imageUrl
+ );
+ }
+ return result;
+ }
+
+ public static String twitterUrl(String twitterName) {
+ return twitterName != null && !twitterName.isEmpty()
+ ? TWITTER_URL.concat(twitterName)
+ : null;
+ }
+
+ public static String hashtagUrl(String twitterHashtag) {
+ return twitterHashtag != null && !twitterHashtag.isEmpty()
+ ? TWITTER_URL.concat(TWITTER_HASHTAG).concat(twitterHashtag)
+ : null;
+ }
+
+}