Android Open Source - final_app Title Retriever

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The source code is released under:

CC0 1.0 Universal Statement of Purpose The laws of most jurisdictions throughout the world automatically confer exclusive Copyright and Related Rights (defined below) upon the creator and subsequent...

Java Source Code

/*
 * Copyright 2012 ZXing authors//  w  ww .ja v  a2s. c o  m
 *
 * 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.android.result.supplement;

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

import android.widget.TextView;

import com.google.zxing.client.android.HttpHelper;
import com.google.zxing.client.android.history.HistoryManager;
import com.google.zxing.client.result.URIParsedResult;

/**
 * Retrieves the title of a web page as supplemental info.
 * 
 * @author Sean Owen
 */
final class TitleRetriever extends SupplementalInfoRetriever {

  private static final Pattern TITLE_PATTERN = Pattern.compile("<title>([^<]+)");
  private static final int MAX_TITLE_LEN = 100;

  private final String httpUrl;

  TitleRetriever(TextView textView, URIParsedResult result, HistoryManager historyManager) {
    super(textView, historyManager);
    this.httpUrl = result.getURI();
  }

  @Override
  void retrieveSupplementalInfo() {
    CharSequence contents;
    try {
      contents = HttpHelper.downloadViaHttp(httpUrl, HttpHelper.ContentType.HTML, 4096);
    } catch (IOException ioe) {
      // ignore this
      return;
    }
    if (contents != null && contents.length() > 0) {
      Matcher m = TITLE_PATTERN.matcher(contents);
      if (m.find()) {
        String title = m.group(1);
        if (title != null && !title.isEmpty()) {
          if (title.length() > MAX_TITLE_LEN) {
            title = title.substring(0, MAX_TITLE_LEN) + "...";
          }
          append(httpUrl, null, new String[] { title }, httpUrl);
        }
      }
    }
  }

}

Java Source Code List

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