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


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/*
 * Copyright (C) 2008-2019, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.juick.server.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);
    }


}