juick-server/src/main/java/com/juick/util/WebUtils.java


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package com.juick.util;

import java.util.regex.Pattern;

/**
 * Created by aalexeev on 11/28/16.
 */
public class WebUtils {
    private WebUtils() {
        throw new IllegalStateException();
    }

    private static final Pattern USER_NAME_PATTERN = Pattern.compile("[a-zA-Z-_\\d]{2,16}");

    private static final Pattern POST_NUMBER_PATTERN = Pattern.compile("-?\\d+");

    private static final Pattern JID_PATTERN = Pattern.compile("^[a-zA-Z0-9\\\\-\\\\_\\\\@\\\\.]{6,64}$");


    public static boolean isPostNumber(final String aString) {
        return aString != null && POST_NUMBER_PATTERN.matcher(aString).matches();
    }

    public static boolean isNotPostNumber(final String aString) {
        return !isPostNumber(aString);
    }

    public static boolean isUserName(final String aString) {
        return aString != null && USER_NAME_PATTERN.matcher(aString).matches();
    }

    public static boolean isNotUserName(final String aString) {
        return !isUserName(aString);
    }

    public static boolean isJid(final String aString) {
        return aString != null && JID_PATTERN.matcher(aString).matches();
    }

    public static boolean isNotJid(final String aString) {
        return !isJid(aString);
    }


}