FolderNameValidator.java

package com.ctriposs.bigmap.utils;

import java.util.regex.Pattern;

public class FolderNameValidator {

    private static final String illegalChars = "/" + '\u0000' + '\u0001' + "-" + '\u001F' + '\u007F' + "-" + '\u009F' + '\uD800' + "-" + '\uF8FF' + '\uFFF0'
            + "-" + '\uFFFF';
    private static final Pattern p = Pattern.compile("(^\\.{1,2}$)|[" + illegalChars + "]");

    public static void validate(String name) {
        if (name == null || name.length() == 0) {
            throw new IllegalArgumentException("folder name is emtpy");
        }
        if(name.length() > 255) {
            throw new IllegalArgumentException("folder name is too long");
        }
        if (p.matcher(name).find()) {
            throw new IllegalArgumentException("folder name [" + name + "] is illegal");
        }
    }


}