Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;

public class Main {
    /**
     * Returns a more practical audio resource name. E.g. if
     * http://stream.com/stream.pls is given, the PLS-file is parsed and the
     * first audio file is returned. It supports PLS, M3U, AXS and XSPF"
     * 
     * @param inputResource
     *            The input resource, a file, URL, PLS-file or M3U-file.
     * 
     * @return A more practical audio resource name.
     */
    public static String sanitizeResource(String inputResource) {
        if (inputResource.toLowerCase().endsWith("pls")) {
            inputResource = parsePLS(inputResource);
        } else if (inputResource.toLowerCase().endsWith("m3u")) {
            inputResource = parseM3U(inputResource);
        } else if (inputResource.toLowerCase().endsWith("asx")) {
            inputResource = parseASX(inputResource);
        } else if (inputResource.toLowerCase().endsWith("xspf")) {
            inputResource = parseXSPF(inputResource);
        }
        return inputResource;
    }

    /**
     * Parses the PLS file and returns the first file name.
     * 
     * @param inputUrl
     *            The input PLS file.
     * @return The first file name in the PLS playlist.
     */
    public static String parsePLS(String inputUrl) {
        String inputFile = "";
        try {
            String plsContents = readTextFromUrl(new URL(inputUrl));
            for (String line : plsContents.split("\n")) {
                if (line.startsWith("File1=")) {
                    inputFile = line.replace("File1=", "").trim();
                    break;
                }
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }

        return inputFile;
    }

    /**
     * Parses the M3U file and returns the first file name.
     * 
     * @param inputUrl
     *            The input M3U file.
     * @return The first file name in the M3U play list.
     */
    public static String parseM3U(String inputUrl) {
        String inputFile = "";
        try {
            String plsContents = readTextFromUrl(new URL(inputUrl));
            for (String line : plsContents.split("\n")) {
                if (!line.trim().isEmpty() && !line.trim().startsWith("#")) {
                    inputFile = line.trim();
                    break;
                }
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        return inputFile;
    }

    private static String parseASX(String inputResource) {
        String inputFile = "";
        try {
            String contents = readTextFromUrl(new URL(inputResource));
            for (String line : contents.split("\n")) {
                if (line.toLowerCase().contains("href")) {
                    String pattern = "(?i).*href=\"(.*)\".*";
                    inputFile = line.replaceAll(pattern, "$1");
                    break;
                }
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        return inputFile;
    }

    private static String parseXSPF(String inputResource) {
        String inputFile = "";
        try {
            String contents = readTextFromUrl(new URL(inputResource));
            for (String line : contents.split("\n")) {
                if (line.toLowerCase().contains("href")) {
                    String pattern = "(?i)<location>(.*)</location>.*";
                    inputFile = line.replaceAll(pattern, "$1");
                    break;
                }
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        return inputFile;
    }

    /**
     * Return the text of the file with the given URL. E.g. if
     * http://test.be/text.txt is given the contents of text.txt is returned.
     * 
     * @param url
     *            The URL.
     * @return The contents of the file.
     */
    public static String readTextFromUrl(URL url) {
        StringBuffer fubber = new StringBuffer();
        try {
            BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
            String inputLine;
            while ((inputLine = in.readLine()) != null) {
                fubber.append(inputLine).append("\n");
            }
            in.close();
        } catch (IOException exception) {
            exception.printStackTrace();
        }
        return fubber.toString();
    }
}