+/*
+ * Copyright (c) 2018-2019. 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.chess.img;
+
+/**
+ * Utilities for path, file name and extension manipulation.
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public final class FilenameUtils {
+
+ private static final String EMPTY_STRING = "";
+
+ private static final char EXTENSION_SEPARATOR = '.';
+
+ private static final char UNIX_SEPARATOR = '/';
+ private static final char WINDOWS_SEPARATOR = '\\';
+
+ private static final String PATH_COLON = ":";
+
+ private static final String JAR_SEPARATOR = ".jar!";
+
+ private static final String OS = System.getProperty("os.name").toLowerCase();
+
+ public static String getName(final String fileName) {
+ if (fileName == null) {
+ return null;
+ }
+ final int endPathIndex = Math.max(
+ fileName.lastIndexOf(UNIX_SEPARATOR),
+ fileName.lastIndexOf(WINDOWS_SEPARATOR)
+ );
+ return fileName.substring(endPathIndex + 1);
+ }
+
+ public static String getBaseName(final String fileName) {
+ return removeExtension(
+ getName(fileName)
+ );
+ }
+
+ public static String getExtension(final String fileName) {
+ if (fileName == null) {
+ return null;
+ }
+ final int extensionPos = fileName.lastIndexOf(EXTENSION_SEPARATOR);
+ return extensionPos < 0
+ ? EMPTY_STRING
+ : fileName.substring(extensionPos + 1);
+ }
+
+ public static String getFullPath(final String parentDir, final String... childDirs) {
+ StringBuilder sb = new StringBuilder();
+ sb.append(parentDir);
+ if (childDirs.length > 0) {
+ for (String childDir : childDirs) {
+ sb.append(isWindows() ? WINDOWS_SEPARATOR : UNIX_SEPARATOR).append(childDir);
+ }
+ }
+ return sb.toString();
+ }
+
+ public static String fixPath(final String path) {
+ if (isWindows()) {
+ return path.startsWith(String.valueOf(UNIX_SEPARATOR))
+ && path.contains(PATH_COLON)
+ ? path.substring(1)
+ : path;
+ }
+ return path;
+ }
+
+ public static String getPathFromJar(final String jarPath) {
+ final int jarEndPos = jarPath.lastIndexOf(JAR_SEPARATOR);
+ return jarEndPos < 0
+ ? EMPTY_STRING
+ : jarPath.substring(jarEndPos + JAR_SEPARATOR.length());
+ }
+
+ private static String removeExtension(final String fileName) {
+ if (fileName == null) {
+ return null;
+ }
+ final int extensionPos = fileName.lastIndexOf(EXTENSION_SEPARATOR);
+ return extensionPos < 0
+ ? fileName
+ : fileName.substring(0, extensionPos);
+ }
+
+ private static boolean isWindows() {
+ return (OS.contains("win"));
+ }
+
+ private FilenameUtils() {
+ throw new AssertionError(
+ "No org.hedgecode.chess.img.FilenameUtils instances!"
+ );
+ }
+
+}