/*
* Copyright 2007 ZXing authors
*
* 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.
*/
package com.google.zxing.client.result;
import com.google.zxing.Result;
import java.util.regex.Pattern;
/**
* Implements the "MATMSG" email message entry format.
*
* Supported keys: TO, SUB, BODY
*
* @author Sean Owen
*/
public final class EmailDoCoMoResultParser extends AbstractDoCoMoResultParser {
private static final Pattern ATEXT_ALPHANUMERIC = Pattern.compile("[a-zA-Z0-9@.!#$%&'*+\\-/=?^_`{|}~]+");
@Override
public EmailAddressParsedResult parse(Result result) {
String rawText = getMassagedText(result);
if (!rawText.startsWith("MATMSG:")) {
return null;
}
String[] rawTo = matchDoCoMoPrefixedField("TO:", rawText, true);
if (rawTo == null) {
return null;
}
String to = rawTo[0];
if (!isBasicallyValidEmailAddress(to)) {
return null;
}
String subject = matchSingleDoCoMoPrefixedField("SUB:", rawText, false);
String body = matchSingleDoCoMoPrefixedField("BODY:", rawText, false);
return new EmailAddressParsedResult(to, subject, body, "mailto:" + to);
}
/**
* This implements only the most basic checking for an email address's validity -- that it contains
* an '@' and contains no characters disallowed by RFC 2822. This is an overly lenient definition of
* validity. We want to generally be lenient here since this class is only intended to encapsulate what's
* in a barcode, not "judge" it.
*/
static boolean isBasicallyValidEmailAddress(String email) {
return email != null && ATEXT_ALPHANUMERIC.matcher(email).matches() && email.indexOf('@') >= 0;
}
}