dk.dr.radio.net.Diverse.java Source code

Introduction

Here is the source code for dk.dr.radio.net.Diverse.java

Source

  /**
   DR Radio 2 is developed by Jacob Nordfalk, Hanafi Mughrabi and Frederik Aagaard.
   Some parts of the code are loosely based on Sveriges Radio Play for Android.
    
   DR Radio 2 for Android is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 as published by
   the Free Software Foundation.
    
   DR Radio 2 for Android 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 General Public License for more details.
    
   You should have received a copy of the GNU General Public License along with
   DR Radio 2 for Android.  If not, see <http://www.gnu.org/licenses/>.
    
   */

  package dk.dr.radio.net;

  import org.json.JSONArray;
  import org.json.JSONException;
  import org.json.JSONObject;

  import java.io.BufferedInputStream;
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.OutputStream;
  import java.io.Reader;
  import java.io.UnsupportedEncodingException;
  import java.net.HttpURLConnection;
  import java.net.URL;
  import java.net.UnknownHostException;
  import java.util.ArrayList;

  import dk.dr.radio.diverse.Log;

  public class Diverse {

      /**
       * Tjek for om vi er p et netvrk der krver login eller lignende.
       * Se 'Handling Network Sign-On' i http://developer.android.com/reference/java/net/HttpHttpURLConnection.html
       */
      private static void tjekOmdirigering(URL u, HttpURLConnection urlConnection) throws IOException {
          URL u2 = urlConnection.getURL();
          if (!u.getHost().equals(u2.getHost())) {
              // Vi blev omdirigeret
              Log.d("tjekOmdirigering " + u);
              Log.d("tjekOmdirigering " + u2);
              //Log.rapporterFejl(omdirigeringsfejl);
              throw new UnknownHostException("Der blev omdirigeret fra " + u.getHost() + " til " + u2.getHost());
          }
      }

public static String lsStreng(InputStream is) throws IOException, UnsupportedEncodingException {

  // Det kan vre ndvendigt at hoppe over BOM mark - se http://android.forums.wordpress.org/topic/xml-pull-error?replies=2
  //is.read(); is.read(); is.read(); // - dette virker kun hvis der ALTID er en BOM
  // Hop over BOM - hvis den er der!
  is = new BufferedInputStream(is);  // bl.a. FileInputStream understtter ikke mark, s brug BufferedInputStream
  is.mark(1); // vi har faktisk kun brug for at sge n byte tilbage
  if (is.read() == 0xef) {
    is.read();
    is.read();
  } // Der var en BOM! Ls de sidste 2 byte
  else is.reset(); // Der var ingen BOM - hop tilbage til start


  final char[] buffer = new char[0x3000];
  StringBuilder out = new StringBuilder();
  Reader in = new InputStreamReader(is, "UTF-8");
  int read;
  do {
    read = in.read(buffer, 0, buffer.length);
    if (read > 0) {
      out.append(buffer, 0, read);
    }
  } while (read >= 0);
  in.close();
  return out.toString();
}

      public static ArrayList<String> jsonArrayTilArrayListString(JSONArray j) throws JSONException {
          int n = j.length();
          ArrayList<String> res = new ArrayList<String>(n);
          for (int i = 0; i < n; i++) {
              res.add(j.getString(i));
          }
          return res;
      }

public static String hentUrlSomStreng(String url) throws IOException {
  Log.d("hentUrlSomStreng lgd=" + url.length() + "  " + url);

  URL u = new URL(url);
  HttpURLConnection urlConnection = (HttpURLConnection) u.openConnection();
  urlConnection.setConnectTimeout(15000);
  urlConnection.setReadTimeout(90 * 1000);   // 1 1/2 minut
  urlConnection.connect(); // http://stackoverflow.com/questions/8179658/urlconnection-getcontent-return-null
  InputStream is = urlConnection.getInputStream();
  Log.d("bnGETURLConnection url.length()=" + url.length() + "  is=" + is + "  is.available()=" + is.available());
  if (urlConnection.getResponseCode() != 200)
    throw new IOException("HTTP-svar var " + urlConnection.getResponseCode() + " " + urlConnection.getResponseMessage() + " for " + u);

  tjekOmdirigering(u, urlConnection);

  return lsStreng(is);
}

public static JSONObject postJson(String url, String data) throws IOException, JSONException {
  //Log.d("postJson " + url+" med data="+data);
  URL u = new URL(url);
  HttpURLConnection urlConnection = (HttpURLConnection) u.openConnection();
  urlConnection.setConnectTimeout(15000);
  urlConnection.setReadTimeout(90 * 1000);   // 1 1/2 minut
  urlConnection.setRequestProperty("Content-Type", "application/json");
  urlConnection.setDoOutput(true);
  urlConnection.connect(); // http://stackoverflow.com/questions/8179658/urlconnection-getcontent-return-null
  OutputStream os = urlConnection.getOutputStream();
  os.write(data.getBytes());
  os.close();
  InputStream is = urlConnection.getInputStream();
  if (urlConnection.getResponseCode() != 200)
    throw new IOException("HTTP-svar var " + urlConnection.getResponseCode() + " " + urlConnection.getResponseMessage() + " for " + u);

  tjekOmdirigering(u, urlConnection);

  return new JSONObject(lsStreng(is));
}

public static int sletFilerldreEnd(File mappe, long tidsstempel) {
  int antalByteDerBlevSlettet = 0;
  int antalFilerDerBlevSlettet = 0;
  File[] files = mappe.listFiles();
  if (files != null) {
    for (File file : files) {
      if (file.lastModified() < tidsstempel) {
        antalByteDerBlevSlettet += file.length();
        antalFilerDerBlevSlettet++;
        file.delete();
      }
    }
  }
  Log.d("sletFilerldreEnd: " + mappe.getName() + ": " + antalFilerDerBlevSlettet + " filer blev slettet, og " + antalByteDerBlevSlettet / 1000 + " kb frigivet");
  return antalByteDerBlevSlettet;
}
  }