/*
 *
 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    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.nd4j.linalg.util;

import org.apache.commons.io.FileUtils;

import java.io.File;
import java.util.Iterator;

/**
 * Path Utilities
 *
 * @author Adam Gibson
 */
public class Paths {

    public final static String PATH_ENV_VARIABLE  = "PATH";

    /**
     * Check if a file exists in the path
     * @param name the name of the file
     * @return true if the name exists
     * false otherwise
     */
    public static boolean nameExistsInPath(String name) {
        String path = System.getenv(PATH_ENV_VARIABLE);
        String[] dirs = path.split(File.pathSeparator);
        for(String dir : dirs) {
            File dirFile = new File(dir);
            if(!dirFile.exists())
                continue;

            if(dirFile.isFile() && dirFile.getName().equals(name))
                return true;
            else {
               Iterator<File> files = FileUtils.iterateFiles(dirFile,null,false);
                while(files.hasNext()) {
                    File curr = files.next();
                    if(curr.getName().equals(name))
                        return true;
                }
                
            }
        }

        return false;
    }


}
