jpexs-decompiler/libsrc/ffdec_lib/src/com/jpexs/helpers/Path.java

/*
 *  Copyright (C) 2010-2016 JPEXS, All rights reserved.
 *
 * This library 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 3.0 of the License, or (at your option) any later version.
 *
 * This library 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.
 */
package com.jpexs.helpers;

import java.io.File;
import java.io.IOException;

/**
 *
 * @author JPEXS
 */
public class Path {

    public static String combine(String... paths) {
        String result = "";
        String separator = File.separator;
        for (int i = 0; i < paths.length; i++) {
            String path = paths[i];
            if (i > 0) {
                if (path.startsWith(separator)) {
                    path = path.substring(separator.length());
                }

                if (!result.endsWith(separator)) {
                    result += separator;
                }
            }

            result += path;
        }

        return result;
    }

    /*
     * Get the extension of a file.
     */
    public static String getExtension(String fileName) {
        return getExtension(new File(fileName));
    }

    /*
     * Get the extension of a file.
     */
    public static String getExtension(File f) {
        String ext = null;
        String s = f.getName();
        int i = s.lastIndexOf('.');

        if (i > 0 && i < s.length() - 1) {
            ext = s.substring(i).toLowerCase();
        }

        return ext;
    }

    public static String getFileNameWithoutExtension(File f) {
        String fileName = f.getName();
        int i = fileName.lastIndexOf('.');

        if (i > 0 && i < fileName.length() - 1) {
            fileName = fileName.substring(0, i);
        }

        return fileName;
    }

    public static void createDirectorySafe(File directory) throws IOException {
        if (!directory.exists()) {
            if (!directory.mkdirs()) {
                if (!directory.exists()) {
                    throw new IOException("Cannot create directory " + directory);
                }
            }
        }
    }
}