Android Open Source - PlayerHater Playlist Parser

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License

The source code is released under:

Apache License

Java Source Code

/*******************************************************************************
 * Copyright 2013 Chris Rhoden, Rebecca Nesson, Public Radio Exchange
 * //from w ww  . ja v  a2 s.  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 org.prx.playerhater.util;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpHead;

import android.net.Uri;

public final class PlaylistParser {

  private static String[] PLS_MIME_TYPES = new String[] { "audio/scpls",
      "audio/x-scpls" };
  private static String[] M3U_MIME_TYPES = new String[] { "audio/x-mpegurl" };

  public static Uri[] parsePlaylist(Uri uri) {
    try {
      HttpClient httpclient = new DefaultHttpClient();
      HttpResponse response = httpclient.execute(new HttpHead(uri
          .toString()));
      Header contentType = response.getEntity().getContentType();
      if (contentType != null) {
        String mimeType = contentType.getValue().split(";")[0].trim();

        for (String plsMimeType : PLS_MIME_TYPES) {
          if (plsMimeType.equalsIgnoreCase(mimeType)) {
            return parsePls(uri);
          }
        }

        for (String m3uMimeType : M3U_MIME_TYPES) {
          if (m3uMimeType.equalsIgnoreCase(mimeType)) {
            return parseM3u(uri);
          }
        }
      }
    } catch (Exception e) {}
    return new Uri[] { uri };
  }

  private static Uri[] parsePls(Uri uri) {
    try {
      HttpClient httpclient = new DefaultHttpClient();
      HttpResponse response = httpclient.execute(new HttpGet(uri.toString()));
      HttpEntity entity = response.getEntity();
      InputStream inputStream = entity.getContent();
      BufferedReader reader = new BufferedReader(new InputStreamReader(
          inputStream));
      String header = reader.readLine();
      if (header.trim().equalsIgnoreCase("[playlist]")) {
        String line;
        ArrayList<Uri> uriList = new ArrayList<Uri>();
        do {
          line = reader.readLine();
          if (line != null) {
            if (line.startsWith("File")) {
              String fileName = line.substring(
                  line.indexOf("=") + 1).trim();
              uriList.add(Uri.parse(fileName));
            }
          }
        } while (line != null);
        if (uriList.size() > 0) {
          Uri[] res = new Uri[uriList.size()];
          return uriList.toArray(res);
        }
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
    return new Uri[] { uri };
  }

  private static Uri[] parseM3u(Uri uri) {

    try {
      HttpClient httpclient = new DefaultHttpClient();
      HttpResponse response = httpclient.execute(new HttpGet(uri
          .toString()));
      HttpEntity entity = response.getEntity();
      InputStream inputStream = entity.getContent();
      BufferedReader reader = new BufferedReader(new InputStreamReader(
          inputStream));
      String line;
      ArrayList<Uri> uriList = new ArrayList<Uri>();
      do {
        line = reader.readLine();
        if (line != null) {
          if (!line.startsWith("#")) {
            uriList.add(Uri.parse(line.trim()));
          }
        }
      } while (line != null);
      if (uriList.size() > 0) {
        Uri[] res = new Uri[uriList.size()];
        return uriList.toArray(res);
      }
    } catch (Exception e) {

    }
    return new Uri[] { uri };
  }

}

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