Buggfix

src/zutil/FileFinder.java

@@ -1,6 +1,9 @@
 package zutil;
 
+import java.io.BufferedReader;
 import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.util.ArrayList;
@@ -52,6 +55,28 @@ public class FileFinder {
 		return null;
 	}
 	
+	
+	/**
+	 * Reads and returns the content of a file as a String.
+	 * Or use FileUtils.readFileToString(file);
+	 * 
+	 * @param file The file to read
+	 * @return The file content
+	 * @throws IOException
+	 */
+	public static String getFileContent(File file) throws IOException{
+		BufferedReader in = new BufferedReader(new FileReader(file));
+		StringBuffer ret = new StringBuffer();
+		int tmp;
+
+		while((tmp=in.read()) != -1){
+			ret.append((char)tmp);
+		}
+		
+		in.close();
+		return ret.toString();
+	}
+	
 	/**
 	 * Returns the URL to the given file
 	 * 

src/zutil/network/torrent/Torrent.java

@@ -0,0 +1,68 @@
+package zutil.network.torrent;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+
+import zutil.FileFinder;
+
+public class Torrent {
+	// Name of the torrent
+	private String name;
+	// Comment
+	private String comment;
+	// Creation date as unix timestamp
+	private long date;
+	// Files in the torrent
+	private ArrayList<String> file_list;
+	// Size of of the full torrent (after download)
+	private long size;
+	// Signature of the software which created the torrent
+	private String created_by;
+	// tracker (the tracker the torrent has been received from)
+	private String main_tracker;
+	// List of known trackers for the torrent
+	private ArrayList<String> tracker_list;
+	private HashMap<String,Object> info_hash;
+	// Torrent is marked as 'private'.
+	private boolean is_private;
+	
+	public Torrent(File torrent) throws IOException{
+		this(FileFinder.getFileContent(FileFinder.find("C:\\Users\\Ziver\\Desktop\\test.torrent")));
+	}
+
+	public Torrent(String data){
+		reset();
+		decode(data);
+	}
+
+	private void reset(){
+		// Reset
+		name = "";
+		comment = "";
+		date = 0;
+		file_list = new ArrayList<String>();
+		size = 0;
+		created_by = "";
+		main_tracker = "";
+		tracker_list = new ArrayList<String>();
+		info_hash = new HashMap<String,Object>();
+		is_private = false;
+	}
+	
+	private void decode(String data){
+		HashMap dataMap = (HashMap)TorrentParser.decode(data);
+		
+		name = (String)dataMap.get("name");
+		comment = (String)dataMap.get("comment");
+		date = (Long)dataMap.get("creation date"); 
+		file_list = new ArrayList<String>();
+		size = (Long)dataMap.get("length");
+		created_by = (String)dataMap.get("created by");
+		main_tracker = (String)dataMap.get("announce");
+		tracker_list = (ArrayList<String>)dataMap.get("announce-list");
+		info_hash = (HashMap)dataMap.get("info");
+		is_private = (((Integer)dataMap.get("private")) != 0);
+	}
+}

src/zutil/network/torrent/TorrentParser.java

@@ -0,0 +1,123 @@
+package zutil.network.torrent;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.LinkedList;
+
+import zutil.FileFinder;
+import zutil.MultiPrintStream;
+
+/**
+ * http://wiki.theory.org/BitTorrentSpecification
+ * @author Ziver
+ *
+ */
+public class TorrentParser {
+	/**
+	 * Example use
+	 */
+	public static void main(String[] args){
+		try {
+			String tmp = FileFinder.getFileContent(FileFinder.find("C:\\Users\\Ziver\\Desktop\\test.torrent"));
+			MultiPrintStream.out.dump(TorrentParser.decode(tmp));
+			
+		} catch (FileNotFoundException e) {
+			e.printStackTrace();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+
+
+	/**
+	 * Returns the representation of the data in the BEncoded string
+	 * 
+	 * @param data The data to be decoded
+	 * @return
+	 */
+	public static Object decode(String data){
+		return decode_BEncoded(new StringBuffer(data));
+	}
+
+	/**
+	 * Returns the representation of the data in the BEncoded string
+	 * 
+	 * @param data The data to be decoded
+	 * @param index The index in data to start from
+	 * @return
+	 */
+	@SuppressWarnings("unchecked")
+	private static Object decode_BEncoded(StringBuffer data){
+		String tmp;
+		char c = ' ';
+
+		switch (data.charAt(0)) {
+		/**
+		 * Integers are prefixed with an i and terminated by an e. For
+		 * example, 123 would bEcode to i123e, -3272002 would bEncode to
+		 * i-3272002e.
+		 */
+		case 'i':
+			//System.out.println("Found Integer at "+index);
+			data.deleteCharAt(0);
+			tmp = data.substring(0, data.indexOf("e"));
+			data.delete(0, tmp.length() + 1);
+			//System.out.println(tmp);
+			return new Long(tmp);
+		/**
+		 * Lists are prefixed with a l and terminated by an e. The list
+		 * should contain a series of bEncoded elements. For example, the
+		 * list of strings ["Monduna", "Bit", "Torrents"] would bEncode to
+		 * l7:Monduna3:Bit8:Torrentse. The list [1, "Monduna", 3, ["Sub", "List"]]
+		 * would bEncode to li1e7:Mondunai3el3:Sub4:Listee
+		 */
+		case 'l':
+			//System.out.println("Found List at "+index);
+			data.deleteCharAt(0);
+			LinkedList list = new LinkedList();
+			c = data.charAt(0);
+			while(c != 'e'){
+				list.add(decode_BEncoded(data));
+				c = data.charAt(0);
+			}
+			data.deleteCharAt(0);
+			//MultiPrintStream.out.dump(list);
+			if(list.size() == 1) return list.poll();
+			else return list;
+		/**
+		 * Dictionaries are prefixed with a d and terminated by an e. They
+		 * are similar to list, except that items are in key value pairs. The
+		 * dictionary {"key":"value", "Monduna":"com", "bit":"Torrents", "number":7}
+		 * would bEncode to d3:key5:value7:Monduna3:com3:bit:8:Torrents6:numberi7ee
+		 */
+		case 'd':
+			//System.out.println("Found Dictionary at "+index);
+			data.deleteCharAt(0);
+			HashMap map = new HashMap();
+			c = data.charAt(0);
+			while(c != 'e'){
+				Object tmp2 = decode_BEncoded(data);
+				map.put(tmp2, decode_BEncoded(data));
+				c = data.charAt(0);
+			}
+			data.deleteCharAt(0);
+			//MultiPrintStream.out.dump(map);
+			return map;
+		/**
+		 * Strings are prefixed with their length followed by a colon.
+		 * For example, "Monduna" would bEncode to 7:Monduna and "BitTorrents"
+		 * would bEncode to 11:BitTorrents.
+		 */
+		default:
+			//System.out.println("Found String at "+index);
+			tmp = data.substring(0, data.indexOf(":"));
+			int length = Integer.parseInt(tmp);
+			data.delete(0, tmp.length()+1);
+			String ret = data.substring(0, length);
+			data.delete(0, length);
+			//System.out.println(data.substring(i, i+length));
+			return ret;
+		}
+	}
+}