AbsolutePathResolver.java

/**
 * Copyright (c) Codice Foundation
 * <p>
 * This is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
 * General Public License as published by the Free Software Foundation, either version 3 of the
 * License, or any later version.
 * <p>
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details. A copy of the GNU Lesser General Public License
 * is distributed along with this program and can be found at
 * <http://www.gnu.org/licenses/lgpl.html>.
 */
package org.codice.ddf.configuration;

import java.io.File;
import java.nio.file.Path;
import java.nio.file.Paths;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class AbsolutePathResolver {

    private static final Logger LOGGER = LoggerFactory.getLogger(AbsolutePathResolver.class);

    private final String path;

    public AbsolutePathResolver(String path) {
        this.path = path;
    }

    public String getPath() {

        if (path == null) {
            return null;
        }

        boolean trailingSeparator = path.endsWith(File.separator);

        Path absolutePath = Paths.get(path);

        if (!absolutePath.isAbsolute()) {
            if (System.getProperty("ddf.home") != null) {
                absolutePath = Paths.get(System.getProperty("ddf.home"), path);
            } else {
                LOGGER.warn(
                        "Path {} is relative. System property ddf.home is not set, resolving path to: {} ",
                        path,
                        absolutePath.toAbsolutePath()
                                .toString());
            }
        }

        String absolutePathStr = absolutePath.toAbsolutePath()
                .toString();
        return trailingSeparator ? absolutePathStr + File.separator : absolutePathStr;
    }
}