com.strider.datadefender.specialcase.EmailDetector.java Source code

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Here is the source code for com.strider.datadefender.specialcase.EmailDetector.java

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/**
 * Copyright 2014-2018, Armenak Grigoryan, and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 */

package com.strider.datadefender.specialcase;

import java.util.ArrayList;
import java.util.List;

import org.apache.log4j.Logger;

import static org.apache.log4j.Logger.getLogger;

import com.strider.datadefender.file.metadata.FileMatchMetaData;
import com.strider.datadefender.utils.CommonUtils;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.commons.validator.EmailValidator;
import org.apache.commons.validator.EmailValidator;

/**
 * @author Armenak Grigoryan
 */
public class EmailDetector implements SpecialCase {
    private static final Logger LOG = getLogger(EmailDetector.class);
    private static final String EMAIL_REGEX = "^[\\w-\\+]+(\\.[\\w]+)*@[\\w-]+(\\.[\\w]+)*(\\.[a-z]{2,})$";
    private static Pattern pattern;
    private static Matcher matcher;

    public static FileMatchMetaData detectEmail(final FileMatchMetaData metaData, final String text) {
        String emailValue = "";

        if (!CommonUtils.isEmptyString(text)) {
            emailValue = text;
        }

        LOG.info("Trying to find email in file " + metaData.getFileName() + " : " + emailValue);
        if (isValidEmail(emailValue)) {
            LOG.info("Email detected: " + emailValue);
            metaData.setAverageProbability(1.0);
            metaData.setModel("email");
            return metaData;
        } else {
            LOG.info("Email " + emailValue + " is not valid");
        }

        return null;
    }

    /**
     * Algorithm is taken from https://en.wikipedia.org/wiki/Social_Insurance_Number
     * @param sin
     * @return boolean true, if SIN is valid, otherwise false
     */
    private static boolean isValidEmail(final String email) {

        EmailValidator eValidator = EmailValidator.getInstance();
        if (eValidator.isValid(email)) {
            LOG.info("*************** Email " + email + " is valid");
            return true;
        } else {
            return false;
        }
    }
}