MailAddressConverter.java

/*
 * (C) Copyright 2006-2010 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Contributors:
 *     Nuxeo - initial API and implementation
 *     Vilogia - Mail address formatting
 *
 */

package org.nuxeo.ecm.platform.mail.web.converter;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;

import static java.util.regex.Pattern.*;

/**
 * Simple mail address converter: most of the addresses imported from the POP3 or IMAP mailbox simply return the string
 * "null <mail.address@domain.org>". To avoid a list of nulls this converter removes the "null" aliases and only keep
 * the mail address. Also return a mailto: link to the sender.
 *
 * @author <a href="mailto:christophe.capon@vilogia.fr">Christophe Capon</a>
 */
public class MailAddressConverter implements Converter {

    private static final String EMAIL_REGEXP = "(.*)<([A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,4})>";

    private static final Pattern pattern = compile(EMAIL_REGEXP, CASE_INSENSITIVE);

    public Object getAsObject(FacesContext ctx, UIComponent uiComp, String inStr) {
        return inStr;
    }

    public String getAsString(FacesContext ctx, UIComponent uiComp, Object inObj) {
        if (null == inObj) {
            return null;
        }

        if (inObj instanceof String) {
            String inStr = (String) inObj;
            Matcher m = pattern.matcher(inStr);

            if (m.matches()) {
                String alias = m.group(1);
                String email = m.group(2);

                if (alias.trim().toLowerCase().equals("null")) {
                    alias = email;
                }

                return String.format("<a href=\"mailto:%s\">%s</a>", email, alias);

            } else {
                return inStr;
            }
        } else {
            return inObj.toString();
        }
    }

}