de.micromata.genome.gdbfs.FileNameUtils.java Source code

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Here is the source code for de.micromata.genome.gdbfs.FileNameUtils.java

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//
// Copyright (C) 2010-2016 Roger Rene Kommer & Micromata GmbH
//
// 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 de.micromata.genome.gdbfs;

import org.apache.commons.lang3.StringUtils;

/**
 * Internal utils to deal with file names.
 * 
 * @author Roger Rene Kommer (r.kommer@micromata.de)
 * 
 */
public class FileNameUtils {
    public static String normalize(String name) {
        if (StringUtils.isEmpty(name) == true) {
            return name;
        }
        name = StringUtils.replace(name, "\\", "/");
        name = StringUtils.replace(name, "//", "/");
        return name;
    }

    /**
     * Gets the name part.
     *
     * @param name the name
     * @return the name part
     */
    public static String getNamePart(String name) {
        if (name == null) {
            return null;
        }
        int idx = name.lastIndexOf('/');
        if (idx == -1) {
            return name;
        }
        return name.substring(idx + 1);

    }

    public static String join(String... components) {
        if (components.length < 2) {
            return components[0];
        }
        String ret = components[0];
        for (int i = 1; i < components.length; ++i) {
            ret = join(ret, components[i]);
        }
        return ret;
    }

    public static String getParentDir(String name) {
        if (name == null) {
            return null;
        }
        int idx = name.lastIndexOf('/');
        if (idx != -1) {
            return name.substring(0, idx);
        } else {
            return "";
        }
    }

    public static String join(String first, String second) {
        if (StringUtils.isEmpty(second) == true || second.equals("/") == true) {
            return first;
        }
        if (StringUtils.isEmpty(first) == true || first.equals("/") == true) {
            return second;
        }
        if (first.endsWith("/") == true || second.startsWith("/") == true) {
            if (first.endsWith("/") == true && second.startsWith("/") == true) {
                return first + second.substring(1);
            }
            return first + second;
        }
        return first + "/" + second;
    }
}