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/*
 * Copyright 2010 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;

/**
 * Parses an "smtp:" URI result, whose format is not standardized but appears to be like:
 * {@code smtp(:subject(:body))}.
 *
 * See http://code.google.com/p/zxing/issues/detail?id=536
 *
 * @author Sean Owen
 */
public final class SMTPResultParser extends ResultParser {

  @Override
  public EmailAddressParsedResult parse(Result result) {
    String rawText = getMassagedText(result);
    if (!(rawText.startsWith("smtp:") || rawText.startsWith("SMTP:"))) {
      return null;
    }
    String emailAddress = rawText.substring(5);
    String subject = null;
    String body = null;
    int colon = emailAddress.indexOf(':');
    if (colon >= 0) {
      subject = emailAddress.substring(colon + 1);
      emailAddress = emailAddress.substring(0, colon);
      colon = subject.indexOf(':');
      if (colon >= 0) {
        body = subject.substring(colon + 1);
        subject = subject.substring(0, colon);
      }
    }
    String mailtoURI = "mailto:" + emailAddress;
    return new EmailAddressParsedResult(emailAddress, subject, body, mailtoURI);
  }
}