+/*
+ * Copyright (c) 2019-2020. 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.chess.scanner;
+
+import java.net.URL;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.hedgecode.chess.scanner.format.PGNConstants;
+
+/**
+ * StringUtils
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public final class StringUtils {
+
+ private static final String EMPTY = "";
+ private static final char BACKSLASH = '\\';
+
+ private static final String CRLF_REGEX = "(\\\\r)?\\\\n";
+ private static final String SHIELD_REGEX = "\\\\";
+
+ private static final String DOMAIN_REGEX_FORMAT = "(\\w+\\.)*\\b%s";
+
+ public static String match(String source, String regex) {
+ Matcher matcher = Pattern.compile(
+ regex,
+ Pattern.MULTILINE
+ ).matcher(source);
+ if (matcher.find()) {
+ return matcher.groupCount() > 0
+ ? matcher.group(1)
+ : matcher.group();
+ }
+ return null;
+ }
+
+ public static boolean isPgn(String source) {
+ return match(
+ source,
+ PGNConstants.PGN_DETECT_REGEX
+ ) != null;
+ }
+
+ public static String shield(String source, char[] shields) {
+ for (char shield : shields) {
+ if (source.indexOf(shield) >= 0) {
+ String regexShield =
+ shield == BACKSLASH
+ ? SHIELD_REGEX
+ : String.valueOf(shield);
+ source = source.replaceAll(
+ String.format("([%s])", regexShield),
+ SHIELD_REGEX.concat("$1")
+ );
+ }
+ }
+ return source;
+ }
+
+ public static String unshield(String source) {
+ return source.replaceAll(SHIELD_REGEX, EMPTY);
+ }
+
+ public static String formatCrlf(String source) {
+ return unshield(
+ source.replaceAll(
+ CRLF_REGEX, PGNConstants.PGN_CRLF
+ )
+ );
+ }
+
+ public static boolean belongDomain(String domain, URL url) {
+ return belongDomain(
+ domain, url.getHost()
+ );
+ }
+
+ public static boolean belongDomain(String domain, String host) {
+ return host.matches(
+ String.format(DOMAIN_REGEX_FORMAT, domain)
+ );
+ }
+
+ private StringUtils() {
+ throw new AssertionError(
+ String.format("No %s instances!", getClass().getName())
+ );
+ }
+
+}
git.hedgecode.org / chesshog-scanner.git / commitdiff