org.prx.playerhater.util.PlaylistParser.java Source code

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Here is the source code for org.prx.playerhater.util.PlaylistParser.java

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/*******************************************************************************
 * Copyright 2013 Chris Rhoden, Rebecca Nesson, Public Radio Exchange
 * 
 * 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 };
    }

}