From: David ‘Bombe’ Roden <bombe@pterodactylus.net>
Date: Thu, 10 Jan 2013 21:24:55 +0000 (+0100)
Subject: Merge branch 'master' into rewrite
X-Git-Tag: 0.1~38
X-Git-Url: https://git.pterodactylus.net/?p=rhynodge.git;a=commitdiff_plain;h=6ec36ef950c23c135bf0e112d932c5b7068189b8

Merge branch 'master' into rewrite

Conflicts:
	src/main/java/net/pterodactylus/rhynodge/filters/KickAssTorrentsFilter.java
---

6ec36ef950c23c135bf0e112d932c5b7068189b8
diff --cc src/main/java/net/pterodactylus/rhynodge/filters/KickAssTorrentsFilter.java
index 11865e7,0000000..c368bf3
mode 100644,000000..100644
--- a/src/main/java/net/pterodactylus/rhynodge/filters/KickAssTorrentsFilter.java
+++ b/src/main/java/net/pterodactylus/rhynodge/filters/KickAssTorrentsFilter.java
@@@ -1,168 -1,0 +1,106 @@@
 +/*
 + * Rhynodge - KickAssTorrentsFilter.java - Copyright © 2013 David Roden
 + *
 + * This program is free software: you can redistribute it and/or modify
 + * it under the terms of the GNU General Public License as published by
 + * the Free Software Foundation, either version 3 of the License, or
 + * (at your option) any later version.
 + *
 + * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 + */
 +
 +package net.pterodactylus.rhynodge.filters;
 +
- import static com.google.common.base.Preconditions.checkState;
- 
- import java.net.URI;
- import java.net.URISyntaxException;
- 
 +import net.pterodactylus.rhynodge.Filter;
- import net.pterodactylus.rhynodge.State;
 +import net.pterodactylus.rhynodge.queries.HttpQuery;
- import net.pterodactylus.rhynodge.states.FailedState;
 +import net.pterodactylus.rhynodge.states.HtmlState;
 +import net.pterodactylus.rhynodge.states.TorrentState;
- import net.pterodactylus.rhynodge.states.TorrentState.TorrentFile;
 +
 +import org.jsoup.nodes.Document;
 +import org.jsoup.nodes.Element;
 +import org.jsoup.select.Elements;
 +
 +/**
 + * {@link Filter} implementation that parses a {@link TorrentState} from an
 + * {@link HtmlState} which was generated by a {@link HttpQuery} to
 + * {@code kickasstorrents.ph}.
 + *
 + * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 + */
- public class KickAssTorrentsFilter implements Filter {
++public class KickAssTorrentsFilter extends TorrentSiteFilter {
++
++	//
++	// TORRENTSITEFILTER METHODS
++	//
 +
 +	/**
 +	 * {@inheritDoc}
 +	 */
 +	@Override
- 	public State filter(State state) {
- 		if (!state.success()) {
- 			return FailedState.from(state);
- 		}
- 		checkState(state instanceof HtmlState, "state is not an HtmlState but a %s", state.getClass().getName());
- 
- 		/* get result table. */
- 		Document document = ((HtmlState) state).document();
- 		Elements mainTable = document.select("table.data");
- 		if (mainTable.isEmpty()) {
- 			/* no main table? */
- 			return new FailedState();
- 		}
- 
- 		/* iterate over all rows. */
- 		TorrentState torrentState = new TorrentState();
- 		Elements dataRows = mainTable.select("tr:gt(0)");
- 		for (Element dataRow : dataRows) {
- 			String name = extractName(dataRow);
- 			String size = extractSize(dataRow);
- 			String magnetUri = extractMagnetUri(dataRow);
- 			String downloadUri;
- 			int fileCount = extractFileCount(dataRow);
- 			int seedCount = extractSeedCount(dataRow);
- 			int leechCount = extractLeechCount(dataRow);
- 			try {
- 				downloadUri = new URI(((HtmlState) state).uri()).resolve(extractDownloadUri(dataRow)).toString();
- 				TorrentFile torrentFile = new TorrentFile(name, size, magnetUri, downloadUri, fileCount, seedCount, leechCount);
- 				torrentState.addTorrentFile(torrentFile);
- 			} catch (URISyntaxException use1) {
- 				/* ignore; if uri was wrong, we wouldn’t be here. */
- 			}
- 		}
- 
- 		return torrentState;
++	protected Elements getDataRows(Document document) {
++		return document.select("table.data").select("tr:gt(0)");
 +	}
 +
- 	//
- 	// STATIC METHODS
- 	//
- 
 +	/**
- 	 * Extracts the name from the given row.
- 	 *
- 	 * @param dataRow
- 	 *            The row to extract the name from
- 	 * @return The extracted name
++	 * {@inheritDoc}
 +	 */
- 	private static String extractName(Element dataRow) {
++	@Override
++	protected String extractName(Element dataRow) {
 +		return dataRow.select("div.torrentname a.normalgrey").text();
 +	}
 +
 +	/**
- 	 * Extracts the size from the given row.
- 	 *
- 	 * @param dataRow
- 	 *            The row to extract the size from
- 	 * @return The extracted size
++	 * {@inheritDoc}
 +	 */
- 	private static String extractSize(Element dataRow) {
++	@Override
++	protected String extractSize(Element dataRow) {
 +		return dataRow.select("td:eq(1)").text();
 +	}
 +
 +	/**
- 	 * Extracts the magnet URI from the given row.
- 	 *
- 	 * @param dataRow
- 	 *            The row to extract the magnet URI from
- 	 * @return The extracted magnet URI
++	 * {@inheritDoc}
 +	 */
- 	private static String extractMagnetUri(Element dataRow) {
++	@Override
++	protected String extractMagnetUri(Element dataRow) {
 +		return dataRow.select("a.imagnet").attr("href");
 +	}
 +
 +	/**
- 	 * Extracts the download URI from the given row.
- 	 *
- 	 * @param dataRow
- 	 *            The row to extract the download URI from
- 	 * @return The extracted download URI
++	 * {@inheritDoc}
 +	 */
- 	private static String extractDownloadUri(Element dataRow) {
++	@Override
++	protected String extractDownloadUri(Element dataRow) {
 +		return dataRow.select("a.idownload:not(.partner1Button)").attr("href");
 +	}
 +
 +	/**
- 	 * Extracts the file count from the given row.
- 	 *
- 	 * @param dataRow
- 	 *            The row to extract the file count from
- 	 * @return The extracted file count
++	 * {@inheritDoc}
 +	 */
- 	private static int extractFileCount(Element dataRow) {
++	@Override
++	protected int extractFileCount(Element dataRow) {
 +		return Integer.valueOf(dataRow.select("td:eq(2)").text());
 +	}
 +
 +	/**
- 	 * Extracts the seed count from the given row.
- 	 *
- 	 * @param dataRow
- 	 *            The row to extract the seed count from
- 	 * @return The extracted seed count
++	 * {@inheritDoc}
 +	 */
- 	private static int extractSeedCount(Element dataRow) {
++	@Override
++	protected int extractSeedCount(Element dataRow) {
 +		return Integer.valueOf(dataRow.select("td:eq(4)").text());
 +	}
 +
 +	/**
- 	 * Extracts the leech count from the given row.
- 	 *
- 	 * @param dataRow
- 	 *            The row to extract the leech count from
- 	 * @return The extracted leech count
++	 * {@inheritDoc}
 +	 */
- 	private static int extractLeechCount(Element dataRow) {
++	@Override
++	protected int extractLeechCount(Element dataRow) {
 +		return Integer.valueOf(dataRow.select("td:eq(5)").text());
 +	}
 +
 +}
diff --cc src/main/java/net/pterodactylus/rhynodge/filters/PirateBayFilter.java
index 0000000,0000000..45c33c1
new file mode 100644
--- /dev/null
+++ b/src/main/java/net/pterodactylus/rhynodge/filters/PirateBayFilter.java
@@@ -1,0 -1,0 +1,98 @@@
++/*
++ * Rhynodge - PirateBayFilter.java - Copyright © 2013 David Roden
++ *
++ * This program is free software: you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation, either version 3 of the License, or
++ * (at your option) any later version.
++ *
++ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
++ */
++
++package net.pterodactylus.rhynodge.filters;
++
++import java.util.regex.Pattern;
++
++import org.jsoup.nodes.Document;
++import org.jsoup.nodes.Element;
++import org.jsoup.select.Elements;
++
++/**
++ * {@link TorrentSiteFilter} implementation that can parse
++ * {@code thepiratebay.se} result pages.
++ *
++ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
++ */
++public class PirateBayFilter extends TorrentSiteFilter {
++
++	/**
++	 * {@inheritDoc}
++	 */
++	@Override
++	protected Elements getDataRows(Document document) {
++		return document.select("table#searchResult tbody tr:has(.vertTh)");
++	}
++
++	/**
++	 * {@inheritDoc}
++	 */
++	@Override
++	protected String extractName(Element dataRow) {
++		return dataRow.select(".detName a").text();
++	}
++
++	/**
++	 * {@inheritDoc}
++	 */
++	@Override
++	protected String extractSize(Element dataRow) {
++		return dataRow.select(".detDesc").text().split(Pattern.quote(","))[1].trim();
++	}
++
++	/**
++	 * {@inheritDoc}
++	 */
++	@Override
++	protected String extractMagnetUri(Element dataRow) {
++		return dataRow.select("a[href^=magnet:]").attr("href");
++	}
++
++	/**
++	 * {@inheritDoc}
++	 */
++	@Override
++	protected String extractDownloadUri(Element dataRow) {
++		return dataRow.select("a[href^=//torrents.]").attr("href");
++	}
++
++	/**
++	 * {@inheritDoc}
++	 */
++	@Override
++	protected int extractFileCount(Element dataRow) {
++		return 0;
++	}
++
++	/**
++	 * {@inheritDoc}
++	 */
++	@Override
++	protected int extractSeedCount(Element dataRow) {
++		return Integer.valueOf(dataRow.select("td:eq(2)").text());
++	}
++
++	/**
++	 * {@inheritDoc}
++	 */
++	@Override
++	protected int extractLeechCount(Element dataRow) {
++		return Integer.valueOf(dataRow.select("td:eq(3)").text());
++	}
++
++}
diff --cc src/main/java/net/pterodactylus/rhynodge/filters/TorrentSiteFilter.java
index 0000000,0000000..b3b5691
new file mode 100644
--- /dev/null
+++ b/src/main/java/net/pterodactylus/rhynodge/filters/TorrentSiteFilter.java
@@@ -1,0 -1,0 +1,167 @@@
++/*
++ * Rhynodge - KickAssTorrentsFilter.java - Copyright © 2013 David Roden
++ *
++ * This program is free software: you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation, either version 3 of the License, or
++ * (at your option) any later version.
++ *
++ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
++ */
++
++package net.pterodactylus.rhynodge.filters;
++
++import static com.google.common.base.Preconditions.checkState;
++
++import java.io.UnsupportedEncodingException;
++import java.net.URI;
++import java.net.URISyntaxException;
++import java.net.URLEncoder;
++
++import net.pterodactylus.rhynodge.Filter;
++import net.pterodactylus.rhynodge.State;
++import net.pterodactylus.rhynodge.queries.HttpQuery;
++import net.pterodactylus.rhynodge.states.FailedState;
++import net.pterodactylus.rhynodge.states.HtmlState;
++import net.pterodactylus.rhynodge.states.TorrentState;
++import net.pterodactylus.rhynodge.states.TorrentState.TorrentFile;
++
++import org.jsoup.nodes.Document;
++import org.jsoup.nodes.Element;
++import org.jsoup.select.Elements;
++
++/**
++ * {@link Filter} implementation that parses a {@link TorrentState} from an
++ * {@link HtmlState} which was generated by a {@link HttpQuery} to
++ * {@code kickasstorrents.ph}.
++ *
++ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
++ */
++public abstract class TorrentSiteFilter implements Filter {
++
++	/**
++	 * {@inheritDoc}
++	 */
++	@Override
++	public State filter(State state) {
++		if (!state.success()) {
++			return FailedState.from(state);
++		}
++		checkState(state instanceof HtmlState, "state is not an HtmlState but a %s", state.getClass().getName());
++
++		/* get result table. */
++		Document document = ((HtmlState) state).document();
++
++		/* iterate over all rows. */
++		Elements dataRows = getDataRows(document);
++		TorrentState torrentState = new TorrentState();
++		for (Element dataRow : dataRows) {
++			String name = extractName(dataRow);
++			String size = extractSize(dataRow);
++			String magnetUri = extractMagnetUri(dataRow);
++			String downloadUri = extractDownloadUri(dataRow);
++			int fileCount = extractFileCount(dataRow);
++			int seedCount = extractSeedCount(dataRow);
++			int leechCount = extractLeechCount(dataRow);
++			try {
++				if ((downloadUri != null) && (downloadUri.length() > 0)) {
++					downloadUri = new URI(((HtmlState) state).uri()).resolve(URLEncoder.encode(downloadUri, "UTF-8").replace("%2F", "/")).toString();
++				} else {
++					downloadUri = null;
++				}
++				TorrentFile torrentFile = new TorrentFile(name, size, magnetUri, downloadUri, fileCount, seedCount, leechCount);
++				torrentState.addTorrentFile(torrentFile);
++			} catch (URISyntaxException use1) {
++				/* ignore; if uri was wrong, we wouldn’t be here. */
++			} catch (UnsupportedEncodingException uee1) {
++				/* ignore, all JVMs can do UTF-8. */
++			}
++		}
++
++		return torrentState;
++	}
++
++	//
++	// ABSTRACT METHODS
++	//
++
++	/**
++	 * Returns the data rows from the given document.
++	 *
++	 * @param document
++	 *            The document to get the data rows from
++	 * @return The data rows
++	 */
++	protected abstract Elements getDataRows(Document document);
++
++	/**
++	 * Extracts the name from the given row.
++	 *
++	 * @param dataRow
++	 *            The row to extract the name from
++	 * @return The extracted name
++	 */
++	protected abstract String extractName(Element dataRow);
++
++	/**
++	 * Extracts the size from the given row.
++	 *
++	 * @param dataRow
++	 *            The row to extract the size from
++	 * @return The extracted size
++	 */
++	protected abstract String extractSize(Element dataRow);
++
++	/**
++	 * Extracts the magnet URI from the given row.
++	 *
++	 * @param dataRow
++	 *            The row to extract the magnet URI from
++	 * @return The extracted magnet URI
++	 */
++	protected abstract String extractMagnetUri(Element dataRow);
++
++	/**
++	 * Extracts the download URI from the given row.
++	 *
++	 * @param dataRow
++	 *            The row to extract the download URI from
++	 * @return The extracted download URI
++	 */
++	protected abstract String extractDownloadUri(Element dataRow);
++
++	/**
++	 * Extracts the file count from the given row.
++	 *
++	 * @param dataRow
++	 *            The row to extract the file count from
++	 * @return The extracted file count, or {@code 0} if the file count can not
++	 *         be extracted
++	 */
++	protected abstract int extractFileCount(Element dataRow);
++
++	/**
++	 * Extracts the seed count from the given row.
++	 *
++	 * @param dataRow
++	 *            The row to extract the seed count from
++	 * @return The extracted seed count
++	 */
++	protected abstract int extractSeedCount(Element dataRow);
++
++	/**
++	 * Extracts the leech count from the given row.
++	 *
++	 * @param dataRow
++	 *            The row to extract the leech count from
++	 * @return The extracted leech count
++	 */
++	protected abstract int extractLeechCount(Element dataRow);
++
++}
diff --cc src/main/java/net/pterodactylus/rhynodge/states/TorrentState.java
index ce5b06f,0000000..c4c3e0b
mode 100644,000000..100644
--- a/src/main/java/net/pterodactylus/rhynodge/states/TorrentState.java
+++ b/src/main/java/net/pterodactylus/rhynodge/states/TorrentState.java
@@@ -1,305 -1,0 +1,307 @@@
 +/*
 + * Rhynodge - TorrentState.java - Copyright © 2013 David Roden
 + *
 + * This program is free software: you can redistribute it and/or modify
 + * it under the terms of the GNU General Public License as published by
 + * the Free Software Foundation, either version 3 of the License, or
 + * (at your option) any later version.
 + *
 + * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 + */
 +
 +package net.pterodactylus.rhynodge.states;
 +
 +import java.nio.charset.Charset;
 +import java.util.Iterator;
 +import java.util.List;
 +
 +import net.pterodactylus.rhynodge.State;
 +import net.pterodactylus.rhynodge.states.TorrentState.TorrentFile;
 +
 +import org.apache.http.NameValuePair;
 +import org.apache.http.client.utils.URLEncodedUtils;
 +
 +import com.fasterxml.jackson.annotation.JsonProperty;
 +import com.google.common.collect.Lists;
 +
 +/**
 + * {@link State} that contains information about an arbitrary number of torrent
 + * files.
 + *
 + * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 + */
 +public class TorrentState extends AbstractState implements Iterable<TorrentFile> {
 +
 +	/** The torrent files. */
 +	@JsonProperty
 +	private List<TorrentFile> files = Lists.newArrayList();
 +
 +	//
 +	// ACCESSORS
 +	//
 +
 +	/**
 +	 * Adds a torrent file to this state.
 +	 *
 +	 * @param torrentFile
 +	 *            The torrent file to add
 +	 * @return This state
 +	 */
 +	public TorrentState addTorrentFile(TorrentFile torrentFile) {
 +		files.add(torrentFile);
 +		return this;
 +	}
 +
 +	//
 +	// ITERABLE METHODS
 +	//
 +
 +	/**
 +	 * {@inheritDoc}
 +	 */
 +	@Override
 +	public Iterator<TorrentFile> iterator() {
 +		return files.iterator();
 +	}
 +
 +	//
 +	// OBJECT METHODS
 +	//
 +
 +	/**
 +	 * {@inheritDoc}
 +	 */
 +	@Override
 +	public String toString() {
 +		return String.format("%s[files=%s]", getClass().getSimpleName(), files);
 +	}
 +
 +	/**
 +	 * Container for torrent file data.
 +	 *
 +	 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 +	 */
 +	public static class TorrentFile {
 +
 +		/** The name of the file. */
 +		@JsonProperty
 +		private final String name;
 +
 +		/** The size of the file. */
 +		@JsonProperty
 +		private final String size;
 +
 +		/** The magnet URI of the file. */
 +		@JsonProperty
 +		private final String magnetUri;
 +
 +		/** The download URI of the file. */
 +		@JsonProperty
 +		private final String downloadUri;
 +
 +		/** The number of files in this torrent. */
 +		@JsonProperty
 +		private final int fileCount;
 +
 +		/** The number of seeds connected to this torrent. */
 +		@JsonProperty
 +		private final int seedCount;
 +
 +		/** The number of leechers connected to this torrent. */
 +		@JsonProperty
 +		private final int leechCount;
 +
 +		/**
 +		 * No-arg constructor for deserialization.
 +		 */
 +		@SuppressWarnings("unused")
 +		private TorrentFile() {
 +			this(null, null, null, null, 0, 0, 0);
 +		}
 +
 +		/**
 +		 * Creates a new torrent file.
 +		 *
 +		 * @param name
 +		 *            The name of the file
 +		 * @param size
 +		 *            The size of the file
 +		 * @param magnetUri
 +		 *            The magnet URI of the file
 +		 * @param downloadUri
 +		 *            The download URI of the file
 +		 * @param fileCount
 +		 *            The number of files
 +		 * @param seedCount
 +		 *            The number of connected seeds
 +		 * @param leechCount
 +		 *            The number of connected leechers
 +		 */
 +		public TorrentFile(String name, String size, String magnetUri, String downloadUri, int fileCount, int seedCount, int leechCount) {
 +			this.name = name;
 +			this.size = size;
 +			this.magnetUri = magnetUri;
 +			this.downloadUri = downloadUri;
 +			this.fileCount = fileCount;
 +			this.seedCount = seedCount;
 +			this.leechCount = leechCount;
 +		}
 +
 +		//
 +		// ACCESSORS
 +		//
 +
 +		/**
 +		 * Returns the name of the file.
 +		 *
 +		 * @return The name of the file
 +		 */
 +		public String name() {
 +			return name;
 +		}
 +
 +		/**
 +		 * Returns the size of the file. The returned size may included
 +		 * non-numeric information, such as units (e. g. “860.46 MB”).
 +		 *
 +		 * @return The size of the file
 +		 */
 +		public String size() {
 +			return size;
 +		}
 +
 +		/**
 +		 * Returns the magnet URI of the file.
 +		 *
- 		 * @return The magnet URI of the file
++		 * @return The magnet URI of the file, or {@code null} if there is no
++		 *         magnet URI for this torrent file
 +		 */
 +		public String magnetUri() {
 +			return magnetUri;
 +		}
 +
 +		/**
 +		 * Returns the download URI of the file.
 +		 *
- 		 * @return The download URI of the file
++		 * @return The download URI of the file, or {@code null} if there is no
++		 *         download URI for this torrent file
 +		 */
 +		public String downloadUri() {
 +			return downloadUri;
 +		}
 +
 +		/**
 +		 * Returns the number of files in this torrent.
 +		 *
 +		 * @return The number of files in this torrent
 +		 */
 +		public int fileCount() {
 +			return fileCount;
 +		}
 +
 +		/**
 +		 * Returns the number of seeds connected to this torrent.
 +		 *
 +		 * @return The number of connected seeds
 +		 */
 +		public int seedCount() {
 +			return seedCount;
 +		}
 +
 +		/**
 +		 * Returns the number of leechers connected to this torrent.
 +		 *
 +		 * @return The number of connected leechers
 +		 */
 +		public int leechCount() {
 +			return leechCount;
 +		}
 +
 +		//
 +		// PRIVATE METHODS
 +		//
 +
 +		/**
 +		 * Generates an ID for this file. If a {@link #magnetUri} is set, an ID
 +		 * is {@link #extractId(String) extracted} from it. Otherwise the magnet
 +		 * URI is used. If the {@link #magnetUri} is not set, the
 +		 * {@link #downloadUri} is used. If that is not set either, the name of
 +		 * the file is returned.
 +		 *
 +		 * @return The generated ID
 +		 */
 +		private String generateId() {
 +			if (magnetUri != null) {
 +				String id = extractId(magnetUri);
 +				if (id != null) {
 +					return id;
 +				}
 +				return magnetUri;
 +			}
 +			return (downloadUri != null) ? downloadUri : name;
 +		}
 +
 +		//
 +		// STATIC METHODS
 +		//
 +
 +		/**
 +		 * Tries to extract the “exact target” of a magnet URI.
 +		 *
 +		 * @param magnetUri
 +		 *            The magnet URI to extract the “xt” from
 +		 * @return The extracted ID, or {@code null} if no ID could be found
 +		 */
 +		private static String extractId(String magnetUri) {
 +			List<NameValuePair> parameters = URLEncodedUtils.parse(magnetUri.substring("magnet:?".length()), Charset.forName("UTF-8"));
 +			for (NameValuePair parameter : parameters) {
 +				if (parameter.getName().equals("xt")) {
 +					return parameter.getValue();
 +				}
 +			}
 +			return null;
 +		}
 +
 +		//
 +		// OBJECT METHODS
 +		//
 +
 +		/**
 +		 * {@inheritDoc}
 +		 */
 +		@Override
 +		public int hashCode() {
 +			return (generateId() != null) ? generateId().hashCode() : 0;
 +		}
 +
 +		/**
 +		 * {@inheritDoc}
 +		 */
 +		@Override
 +		public boolean equals(Object object) {
 +			if (!(object instanceof TorrentFile)) {
 +				return false;
 +			}
 +			if (generateId() != null) {
 +				return generateId().equals(((TorrentFile) object).generateId());
 +			}
 +			return false;
 +		}
 +
 +		/**
 +		 * {@inheritDoc}
 +		 */
 +		@Override
 +		public String toString() {
 +			return String.format("%s(%s,%s,%s)", name(), size(), magnetUri(), downloadUri());
 +		}
 +
 +	}
 +
 +}
diff --cc src/main/java/net/pterodactylus/rhynodge/triggers/NewEpisodeTrigger.java
index f23869d,0000000..a8e321c
mode 100644,000000..100644
--- a/src/main/java/net/pterodactylus/rhynodge/triggers/NewEpisodeTrigger.java
+++ b/src/main/java/net/pterodactylus/rhynodge/triggers/NewEpisodeTrigger.java
@@@ -1,233 -1,0 +1,253 @@@
 +/*
 + * Rhynodge - NewEpisodeTrigger.java - Copyright © 2013 David Roden
 + *
 + * This program is free software: you can redistribute it and/or modify
 + * it under the terms of the GNU General Public License as published by
 + * the Free Software Foundation, either version 3 of the License, or
 + * (at your option) any later version.
 + *
 + * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 + */
 +
 +package net.pterodactylus.rhynodge.triggers;
 +
 +import static com.google.common.base.Preconditions.checkState;
 +
 +import java.util.Collection;
 +
 +import net.pterodactylus.rhynodge.Reaction;
 +import net.pterodactylus.rhynodge.State;
 +import net.pterodactylus.rhynodge.Trigger;
 +import net.pterodactylus.rhynodge.output.DefaultOutput;
 +import net.pterodactylus.rhynodge.output.Output;
 +import net.pterodactylus.rhynodge.states.EpisodeState;
 +import net.pterodactylus.rhynodge.states.EpisodeState.Episode;
 +import net.pterodactylus.rhynodge.states.TorrentState.TorrentFile;
 +
 +import org.apache.commons.lang3.StringEscapeUtils;
 +
 +import com.google.common.base.Predicate;
 +import com.google.common.collect.Collections2;
 +
 +/**
 + * {@link Trigger} implementation that compares two {@link EpisodeState}s for
 + * new and changed {@link Episode}s.
 + *
 + * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 + */
 +public class NewEpisodeTrigger implements Trigger {
 +
 +	/** All new episodes. */
 +	private Collection<Episode> newEpisodes;
 +
 +	/** All changed episodes. */
 +	private Collection<Episode> changedEpisodes;
 +
 +	//
 +	// TRIGGER METHODS
 +	//
 +
 +	/**
 +	 * {@inheritDoc}
 +	 */
 +	@Override
 +	public boolean triggers(State currentState, State previousState) {
 +		checkState(currentState instanceof EpisodeState, "currentState is not a EpisodeState but a %s", currentState.getClass().getName());
 +		checkState(previousState instanceof EpisodeState, "previousState is not a EpisodeState but a %s", currentState.getClass().getName());
 +		final EpisodeState currentEpisodeState = (EpisodeState) currentState;
 +		final EpisodeState previousEpisodeState = (EpisodeState) previousState;
 +
 +		newEpisodes = Collections2.filter(currentEpisodeState.episodes(), new Predicate<Episode>() {
 +
 +			@Override
 +			public boolean apply(Episode episode) {
 +				return !previousEpisodeState.episodes().contains(episode);
 +			}
 +		});
 +
 +		changedEpisodes = Collections2.filter(currentEpisodeState.episodes(), new Predicate<Episode>() {
 +
 +			@Override
 +			public boolean apply(Episode episode) {
 +				if (!previousEpisodeState.episodes().contains(episode)) {
 +					return false;
 +				}
 +
 +				/* find previous episode. */
 +				final Episode previousEpisode = findPreviousEpisode(episode);
 +
 +				/* compare the list of torrent files. */
 +				Collection<TorrentFile> newTorrentFiles = Collections2.filter(episode.torrentFiles(), new Predicate<TorrentFile>() {
 +
 +					@Override
 +					public boolean apply(TorrentFile torrentFile) {
 +						return !previousEpisode.torrentFiles().contains(torrentFile);
 +					}
 +				});
 +
 +				return !newTorrentFiles.isEmpty();
 +			}
 +
 +			private Episode findPreviousEpisode(Episode episode) {
 +				for (Episode previousStateEpisode : previousEpisodeState) {
 +					if (previousStateEpisode.equals(episode)) {
 +						return previousStateEpisode;
 +					}
 +				}
 +				return null;
 +			}
 +
 +		});
 +
 +		return !newEpisodes.isEmpty() || !changedEpisodes.isEmpty();
 +	}
 +
 +	/**
 +	 * {@inheritDoc}
 +	 */
 +	@Override
 +	public Output output(Reaction reaction) {
 +		String summary;
 +		if (!newEpisodes.isEmpty()) {
 +			if (!changedEpisodes.isEmpty()) {
 +				summary = String.format("%d new and %d changed Torrent(s) for “%s!”", newEpisodes.size(), changedEpisodes.size(), reaction.name());
 +			} else {
 +				summary = String.format("%d new Torrent(s) for “%s!”", newEpisodes.size(), reaction.name());
 +			}
 +		} else {
 +			summary = String.format("%d changed Torrent(s) for “%s!”", changedEpisodes.size(), reaction.name());
 +		}
 +		DefaultOutput output = new DefaultOutput(summary);
 +		output.addText("text/plain", generatePlainText(reaction, newEpisodes, changedEpisodes));
 +		output.addText("text/html", generateHtmlText(reaction, newEpisodes, changedEpisodes));
 +		return output;
 +	}
 +
 +	//
 +	// STATIC METHODS
 +	//
 +
 +	/**
 +	 * Generates the plain text trigger output.
 +	 *
 +	 * @param reaction
 +	 *            The reaction that was triggered
 +	 * @param newEpisodes
 +	 *            The new episodes
 +	 * @param changedEpisodes
 +	 *            The changed episodes
 +	 * @return The plain text output
 +	 */
 +	private static String generatePlainText(Reaction reaction, Collection<Episode> newEpisodes, Collection<Episode> changedEpisodes) {
 +		StringBuilder stringBuilder = new StringBuilder();
 +		if (!newEpisodes.isEmpty()) {
 +			stringBuilder.append(reaction.name()).append(" - New Episodes\n\n");
 +			for (Episode episode : newEpisodes) {
 +				stringBuilder.append("- ").append(episode.identifier()).append("\n");
 +				for (TorrentFile torrentFile : episode) {
 +					stringBuilder.append("  - ").append(torrentFile.name()).append(", ").append(torrentFile.size()).append("\n");
- 					stringBuilder.append("    Magnet: ").append(torrentFile.magnetUri()).append("\n");
- 					stringBuilder.append("    Download: ").append(torrentFile.downloadUri()).append("\n");
++					if ((torrentFile.magnetUri() != null) && (torrentFile.magnetUri().length() > 0)) {
++						stringBuilder.append("    Magnet: ").append(torrentFile.magnetUri()).append("\n");
++					}
++					if ((torrentFile.downloadUri() != null) && (torrentFile.downloadUri().length() > 0)) {
++						stringBuilder.append("    Download: ").append(torrentFile.downloadUri()).append("\n");
++					}
 +				}
 +			}
 +		}
 +		if (!changedEpisodes.isEmpty()) {
 +			stringBuilder.append(reaction.name()).append(" - Changed Episodes\n\n");
 +			for (Episode episode : changedEpisodes) {
 +				stringBuilder.append("- ").append(episode.identifier()).append("\n");
 +				for (TorrentFile torrentFile : episode) {
 +					stringBuilder.append("  - ").append(torrentFile.name()).append(", ").append(torrentFile.size()).append("\n");
- 					stringBuilder.append("    Magnet: ").append(torrentFile.magnetUri()).append("\n");
- 					stringBuilder.append("    Download: ").append(torrentFile.downloadUri()).append("\n");
++					if ((torrentFile.magnetUri() != null) && (torrentFile.magnetUri().length() > 0)) {
++						stringBuilder.append("    Magnet: ").append(torrentFile.magnetUri()).append("\n");
++					}
++					if ((torrentFile.downloadUri() != null) && (torrentFile.downloadUri().length() > 0)) {
++						stringBuilder.append("    Download: ").append(torrentFile.downloadUri()).append("\n");
++					}
 +				}
 +			}
 +		}
 +		return stringBuilder.toString();
 +	}
 +
 +	/**
 +	 * Generates the HTML trigger output.
 +	 *
 +	 * @param reaction
 +	 *            The reaction that was triggered
 +	 * @param newEpisodes
 +	 *            The new episodes
 +	 * @param changedEpisodes
 +	 *            The changed episodes
 +	 * @return The HTML output
 +	 */
 +	private static String generateHtmlText(Reaction reaction, Collection<Episode> newEpisodes, Collection<Episode> changedEpisodes) {
 +		StringBuilder htmlBuilder = new StringBuilder();
 +		htmlBuilder.append("<html><body>\n");
 +		htmlBuilder.append("<h1>").append(StringEscapeUtils.escapeHtml4(reaction.name())).append("</h1>\n");
 +		if (!newEpisodes.isEmpty()) {
 +			htmlBuilder.append("<h2>New Episodes</h2>\n");
 +			htmlBuilder.append("<ul>\n");
 +			for (Episode episode : newEpisodes) {
 +				htmlBuilder.append("<li>Season ").append(episode.season()).append(", Episode ").append(episode.episode()).append("</li>\n");
 +				htmlBuilder.append("<ul>\n");
 +				for (TorrentFile torrentFile : episode) {
 +					htmlBuilder.append("<li>").append(StringEscapeUtils.escapeHtml4(torrentFile.name())).append("</li>\n");
 +					htmlBuilder.append("<div>");
 +					htmlBuilder.append("<strong>").append(StringEscapeUtils.escapeHtml4(torrentFile.size())).append("</strong>, ");
 +					htmlBuilder.append("<strong>").append(torrentFile.fileCount()).append("</strong> file(s), ");
 +					htmlBuilder.append("<strong>").append(torrentFile.seedCount()).append("</strong> seed(s), ");
 +					htmlBuilder.append("<strong>").append(torrentFile.leechCount()).append("</strong> leecher(s)</div>\n");
- 					htmlBuilder.append("<div><a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.magnetUri())).append("\">Magnet</a> ");
- 					htmlBuilder.append("<a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.downloadUri())).append("\">Download</a></div>\n");
++					htmlBuilder.append("<div>");
++					if ((torrentFile.magnetUri() != null) && (torrentFile.magnetUri().length() > 0)) {
++						htmlBuilder.append("<a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.magnetUri())).append("\">Magnet</a> ");
++					}
++					if ((torrentFile.downloadUri() != null) && (torrentFile.downloadUri().length() > 0)) {
++						htmlBuilder.append("<a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.downloadUri())).append("\">Download</a>");
++					}
++					htmlBuilder.append("</div>\n");
 +				}
 +				htmlBuilder.append("</ul>\n");
 +			}
 +			htmlBuilder.append("</ul>\n");
 +		}
 +		if (!changedEpisodes.isEmpty()) {
 +			htmlBuilder.append("<h2>Changed Episodes</h2>\n");
 +			htmlBuilder.append("<ul>\n");
 +			for (Episode episode : changedEpisodes) {
 +				htmlBuilder.append("<li>Season ").append(episode.season()).append(", Episode ").append(episode.episode()).append("</li>\n");
 +				htmlBuilder.append("<ul>\n");
 +				for (TorrentFile torrentFile : episode) {
 +					htmlBuilder.append("<li>").append(StringEscapeUtils.escapeHtml4(torrentFile.name())).append("</li>\n");
 +					htmlBuilder.append("<div>");
 +					htmlBuilder.append("<strong>").append(StringEscapeUtils.escapeHtml4(torrentFile.size())).append("</strong>, ");
 +					htmlBuilder.append("<strong>").append(torrentFile.fileCount()).append("</strong> file(s), ");
 +					htmlBuilder.append("<strong>").append(torrentFile.seedCount()).append("</strong> seed(s), ");
 +					htmlBuilder.append("<strong>").append(torrentFile.leechCount()).append("</strong> leecher(s)</div>\n");
- 					htmlBuilder.append("<div><a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.magnetUri())).append("\">Magnet</a> ");
- 					htmlBuilder.append("<a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.downloadUri())).append("\">Download</a></div>\n");
++					htmlBuilder.append("<div>");
++					if ((torrentFile.magnetUri() != null) && (torrentFile.magnetUri().length() > 0)) {
++						htmlBuilder.append("<a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.magnetUri())).append("\">Magnet</a> ");
++					}
++					if ((torrentFile.downloadUri() != null) && (torrentFile.downloadUri().length() > 0)) {
++						htmlBuilder.append("<a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.downloadUri())).append("\">Download</a>");
++					}
++					htmlBuilder.append("</div>\n");
 +				}
 +				htmlBuilder.append("</ul>\n");
 +			}
 +			htmlBuilder.append("</ul>\n");
 +		}
 +		htmlBuilder.append("</body></html>\n");
 +		return htmlBuilder.toString();
 +	}
 +
 +}
diff --cc src/main/java/net/pterodactylus/rhynodge/triggers/NewTorrentTrigger.java
index a21a8d6,0000000..2803bb5
mode 100644,000000..100644
--- a/src/main/java/net/pterodactylus/rhynodge/triggers/NewTorrentTrigger.java
+++ b/src/main/java/net/pterodactylus/rhynodge/triggers/NewTorrentTrigger.java
@@@ -1,130 -1,0 +1,138 @@@
 +/*
 + * Rhynodge - NewTorrentTrigger.java - Copyright © 2013 David Roden
 + *
 + * This program is free software: you can redistribute it and/or modify
 + * it under the terms of the GNU General Public License as published by
 + * the Free Software Foundation, either version 3 of the License, or
 + * (at your option) any later version.
 + *
 + * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 + */
 +
 +package net.pterodactylus.rhynodge.triggers;
 +
 +import static com.google.common.base.Preconditions.checkState;
 +
 +import java.util.List;
 +
 +import net.pterodactylus.rhynodge.Reaction;
 +import net.pterodactylus.rhynodge.State;
 +import net.pterodactylus.rhynodge.Trigger;
 +import net.pterodactylus.rhynodge.output.DefaultOutput;
 +import net.pterodactylus.rhynodge.output.Output;
 +import net.pterodactylus.rhynodge.states.TorrentState;
 +import net.pterodactylus.rhynodge.states.TorrentState.TorrentFile;
 +
 +import org.apache.commons.lang3.StringEscapeUtils;
 +
 +import com.google.common.collect.Lists;
 +
 +/**
 + * {@link Trigger} implementation that is triggered by {@link TorrentFile}s that
 + * appear in the current {@link TorrentState} but not in the previous one.
 + *
 + * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 + */
 +public class NewTorrentTrigger implements Trigger {
 +
 +	/** The newly detected torrent files. */
 +	private List<TorrentFile> torrentFiles = Lists.newArrayList();
 +
 +	//
 +	// TRIGGER METHODS
 +	//
 +
 +	/**
 +	 * {@inheritDoc}
 +	 */
 +	@Override
 +	public boolean triggers(State currentState, State previousState) {
 +		checkState(currentState instanceof TorrentState, "currentState is not a TorrentState but a %s", currentState.getClass().getName());
 +		checkState(previousState instanceof TorrentState, "previousState is not a TorrentState but a %s", currentState.getClass().getName());
 +		TorrentState currentTorrentState = (TorrentState) currentState;
 +		TorrentState previousTorrentState = (TorrentState) previousState;
 +		torrentFiles.clear();
 +		for (TorrentFile torrentFile : currentTorrentState) {
 +			torrentFiles.add(torrentFile);
 +		}
 +		for (TorrentFile torrentFile : previousTorrentState) {
 +			torrentFiles.remove(torrentFile);
 +		}
 +		return !torrentFiles.isEmpty();
 +	}
 +
 +	/**
 +	 * {@inheritDoc}
 +	 */
 +	@Override
 +	public Output output(Reaction reaction) {
 +		DefaultOutput output = new DefaultOutput(String.format("Found %d new Torrent(s) for “%s!”", torrentFiles.size(), reaction.name()));
 +		output.addText("text/plain", getPlainTextList(torrentFiles));
 +		output.addText("text/html", getHtmlTextList(torrentFiles));
 +		return output;
 +	}
 +
 +	//
 +	// STATIC METHODS
 +	//
 +
 +	/**
 +	 * Generates a plain text list of torrent files.
 +	 *
 +	 * @param torrentFiles
 +	 *            The torrent files to list
 +	 * @return The generated plain text
 +	 */
 +	private static String getPlainTextList(List<TorrentFile> torrentFiles) {
 +		StringBuilder plainText = new StringBuilder();
 +		plainText.append("New Torrents:\n\n");
 +		for (TorrentFile torrentFile : torrentFiles) {
 +			plainText.append(torrentFile.name()).append('\n');
 +			plainText.append('\t').append(torrentFile.size()).append(" in ").append(torrentFile.fileCount()).append(" file(s)\n");
 +			plainText.append('\t').append(torrentFile.seedCount()).append(" seed(s), ").append(torrentFile.leechCount()).append(" leecher(s)\n");
- 			plainText.append('\t').append(torrentFile.magnetUri()).append('\n');
- 			plainText.append('\t').append(torrentFile.downloadUri()).append('\n');
++			if ((torrentFile.magnetUri() != null) && (torrentFile.magnetUri().length() > 0)) {
++				plainText.append('\t').append(torrentFile.magnetUri()).append('\n');
++			}
++			if ((torrentFile.downloadUri() != null) && (torrentFile.downloadUri().length() > 0)) {
++				plainText.append('\t').append(torrentFile.downloadUri()).append('\n');
++			}
 +			plainText.append('\n');
 +		}
 +		return plainText.toString();
 +	}
 +
 +	/**
 +	 * Generates an HTML list of the given torrent files.
 +	 *
 +	 * @param torrentFiles
 +	 *            The torrent files to list
 +	 * @return The generated HTML
 +	 */
 +	private static String getHtmlTextList(List<TorrentFile> torrentFiles) {
 +		StringBuilder htmlText = new StringBuilder();
 +		htmlText.append("<html><body>\n");
 +		htmlText.append("<h1>New Torrents</h1>\n");
 +		htmlText.append("<ul>\n");
 +		for (TorrentFile torrentFile : torrentFiles) {
 +			htmlText.append("<li><strong>").append(StringEscapeUtils.escapeHtml4(torrentFile.name())).append("</strong></li>");
 +			htmlText.append("<div>Size: <strong>").append(StringEscapeUtils.escapeHtml4(torrentFile.size())).append("</strong> in <strong>").append(torrentFile.fileCount()).append("</strong> file(s)</div>");
 +			htmlText.append("<div><strong>").append(torrentFile.seedCount()).append("</strong> seed(s), <strong>").append(torrentFile.leechCount()).append("</strong> leecher(s)</div>");
- 			htmlText.append(String.format("<div><a href=\"%s\">Magnet URI</a></div>", StringEscapeUtils.escapeHtml4(torrentFile.magnetUri())));
- 			htmlText.append(String.format("<div><a href=\"%s\">Download URI</a></div>", StringEscapeUtils.escapeHtml4(torrentFile.downloadUri())));
++			if ((torrentFile.magnetUri() != null) && (torrentFile.magnetUri().length() > 0)) {
++				htmlText.append(String.format("<div><a href=\"%s\">Magnet URI</a></div>", StringEscapeUtils.escapeHtml4(torrentFile.magnetUri())));
++			}
++			if ((torrentFile.downloadUri() != null) && (torrentFile.downloadUri().length() > 0)) {
++				htmlText.append(String.format("<div><a href=\"%s\">Download URI</a></div>", StringEscapeUtils.escapeHtml4(torrentFile.downloadUri())));
++			}
 +		}
 +		htmlText.append("</ul>\n");
 +		htmlText.append("</body></html>\n");
 +		return htmlText.toString();
 +	}
 +
 +}
diff --cc src/main/resources/chains/thepiratebay-example.json
index 0000000,f2eed53..ad79213
mode 000000,100644..100644
--- a/src/main/resources/chains/thepiratebay-example.json
+++ b/src/main/resources/chains/thepiratebay-example.json
@@@ -1,0 -1,50 +1,50 @@@
+ {
+ 	"enabled": false,
+ 	"name": "Example Reaction",
+ 
+ 	"query":
+ 		{
+ 			"class": "HttpQuery",
+ 			"parameters": [
+ 				{
+ 					"name": "url",
+ 					"value": "http://thepiratebay.se/search/Example%20Words/0/3/0"
+ 				}
+ 			]
+ 		},
+ 
+ 	"filters": [
+ 		{
+ 			"class": "HtmlFilter"
+ 		},
+ 		{
+ 			"class": "PirateBayFilter"
+ 		}
+ 	],
+ 
+ 	"trigger":
+ 		{
+ 			"class": "NewTorrentTrigger"
+ 		},
+ 
+ 	"action":
+ 		{
+ 			"class": "EmailAction",
+ 			"parameters": [
+ 				{
+ 					"name": "smtpHostname",
+ 					"value": "smtp"
+ 				},
+ 				{
+ 					"name": "sender",
 -					"value": "reactor@reactor.de"
++					"value": "rhynodge@rhynodge.net"
+ 				},
+ 				{
+ 					"name": "recipient",
+ 					"value": "recipient@recipient.de"
+ 				}
+ 			]
+ 		},
+ 
+ 	"updateInterval": 3600
+ }