001/*
002 * Copyright 2007-2018 The jdeb developers.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.vafer.jdeb.utils;
017
018import java.io.File;
019import java.io.IOException;
020
021/**
022 * Simple utilities to deal with symbolic links
023 */
024public final class SymlinkUtils {
025    private SymlinkUtils() {
026    }
027
028    public static boolean isSymbolicLink(final File file) throws IOException {
029        final File canon;
030        if (file.getParent() == null) {
031            canon = file;
032        } else {
033            final File canonDir = file.getParentFile().getCanonicalFile();
034            canon = new File(canonDir, file.getName());
035        }
036        return !canon.getCanonicalFile().equals(canon.getAbsoluteFile());
037    }
038
039    public static String readSymbolicLink(final File file) throws IOException {
040        return file.getCanonicalFile().getPath();
041    }
042
043}