Java Path File Name nio getUniqueFileInDirectory(Path dir, String name)

Description

get Unique File In Directory

License

Apache License

Declaration

public static Path getUniqueFileInDirectory(Path dir, String name) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.nio.file.Files;
import java.nio.file.Path;

public class Main {
    public static Path getUniqueFileInDirectory(Path dir, String name) {
        int extension = name.lastIndexOf('.');
        return extension <= 0 || extension >= name.length() - 1 ? getUniqueFileInDirectory(dir, name, "")
                : getUniqueFileInDirectory(dir, name.substring(0, extension), name.substring(extension));
    }/*from www  . j a va  2  s .  c  o m*/

    public static Path getUniqueFileInDirectory(Path dir, String name, String extension) {
        Path file = dir.resolve(name + extension);
        if (Files.exists(file)) {
            file = dir.resolve(name + " copy" + extension);
            for (int i = 2; Files.exists(file); i++) {
                file = dir.resolve(String.format("%s copy %d%s", name, i, extension));
            }
        }
        return file;
    }
}

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