src/main/java/net/pterodactylus/xdcc/ui/stdin/CommandReader.java

   1 /*
   2  * XdccDownloader - CommandReader.java - Copyright © 2013 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.xdcc.ui.stdin;
  19
  20 import java.io.BufferedReader;
  21 import java.io.IOException;
  22 import java.io.Reader;
  23 import java.io.Writer;
  24 import java.util.Collection;
  25 import java.util.Collections;
  26 import java.util.List;
  27 import java.util.Set;
  28
  29 import net.pterodactylus.irc.Connection;
  30 import net.pterodactylus.irc.DccReceiver;
  31 import net.pterodactylus.irc.util.MessageCleaner;
  32 import net.pterodactylus.xdcc.core.Core;
  33 import net.pterodactylus.xdcc.core.event.DownloadFailed;
  34 import net.pterodactylus.xdcc.core.event.DownloadFinished;
  35 import net.pterodactylus.xdcc.core.event.DownloadStarted;
  36 import net.pterodactylus.xdcc.core.event.GenericMessage;
  37 import net.pterodactylus.xdcc.core.event.MessageReceived;
  38 import net.pterodactylus.xdcc.data.Bot;
  39 import net.pterodactylus.xdcc.data.Download;
  40 import net.pterodactylus.xdcc.data.Pack;
  41
  42 import com.google.common.collect.Lists;
  43 import com.google.common.collect.Sets;
  44 import com.google.common.eventbus.Subscribe;
  45 import com.google.common.primitives.Ints;
  46 import com.google.common.util.concurrent.AbstractExecutionThreadService;
  47
  48 /**
  49  * Command interface for arbitrary {@link Reader}s.
  50  *
  51  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  52  */
  53 public class CommandReader extends AbstractExecutionThreadService {
  54
  55         /** The core being controlled. */
  56         private final Core core;
  57
  58         /** The reader to read commands from. */
  59         private final BufferedReader reader;
  60
  61         /** The writer to write the results to. */
  62         private final Writer writer;
  63
  64         /**
  65          * Creates a new command reader.
  66          *
  67          * @param core
  68          *              The core being controlled
  69          * @param reader
  70          *              The reader to read commands from
  71          * @param writer
  72          *              The write to write results to
  73          */
  74         public CommandReader(Core core, Reader reader, Writer writer) {
  75                 this.core = core;
  76                 this.reader = new BufferedReader(reader);
  77                 this.writer = writer;
  78         }
  79
  80         //
  81         // ABSTRACTEXECUTIONTHREADSERVICE METHODS
  82         //
  83
  84         @Override
  85         protected void run() throws Exception {
  86                 String lastLine = "";
  87                 String line;
  88                 final List<Result> lastResult = Lists.newArrayList();
  89                 final List<Connection> lastConnections = Lists.newArrayList();
  90                 while ((line = reader.readLine()) != null) {
  91                         if (line.equals("")) {
  92                                 line = lastLine;
  93                         }
  94                         String[] words = line.split(" +");
  95                         if (words[0].equalsIgnoreCase("search")) {
  96                                 lastResult.clear();
  97                                 for (Bot bot : Lists.newArrayList(core.bots())) {
  98                                         for (Pack pack : Lists.newArrayList(bot)) {
  99                                                 boolean found = true;
 100                                                 for (int wordIndex = 1; wordIndex < words.length; ++wordIndex) {
 101                                                         if (words[wordIndex].startsWith("-") && pack.name().toLowerCase().contains(words[wordIndex].toLowerCase().substring(1))) {
 102                                                                 found = false;
 103                                                                 break;
 104                                                         }
 105                                                         if (!words[wordIndex].startsWith("-") && !pack.name().toLowerCase().contains(words[wordIndex].toLowerCase())) {
 106                                                                 found = false;
 107                                                                 break;
 108                                                         }
 109                                                 }
 110                                                 if (found) {
 111                                                         lastResult.add(new Result(bot, pack));
 112                                                 }
 113                                         }
 114                                 }
 115                                 Collections.sort(lastResult);
 116                                 int counter = 0;
 117                                 for (Result result : lastResult) {
 118                                         writeLine(String.format("[%d] %s (%s) from %s (#%s) on %s", counter++, result.pack().name(), result.pack().size(), result.bot().name(), result.pack().id(), result.bot().network().name()));
 119                                 }
 120                                 writeLine("End of Search.");
 121                         } else if (words[0].equalsIgnoreCase("dcc")) {
 122                                 int counter = 0;
 123                                 for (Download download : core.downloads()) {
 124                                         DccReceiver dccReceiver = download.dccReceiver();
 125                                         if (dccReceiver == null) {
 126                                                 /* download has not even started. */
 127                                                 writer.write(String.format("[%d] %s requested from %s (not started yet)\n", counter++, download.pack().name(), download.bot().name()));
 128                                                 continue;
 129                                         }
 130                                         writer.write(String.format("[%d] %s from %s (%s, ", counter++, dccReceiver.filename(), download.bot().name(), f(dccReceiver.size())));
 131                                         if (dccReceiver.isRunning()) {
 132                                                 writer.write(String.format("%.1f%%, %s", dccReceiver.progress() * 100.0 / dccReceiver.size(), f(dccReceiver.currentRate())));
 133                                         } else {
 134                                                 if (dccReceiver.progress() >= dccReceiver.size()) {
 135                                                         writer.write(String.format("complete, %s", f(dccReceiver.overallRate())));
 136                                                 } else {
 137                                                         writer.write(String.format("aborted at %.1f%%, %s", dccReceiver.progress() * 100.0 / dccReceiver.size(), f(dccReceiver.currentRate())));
 138                                                 }
 139                                         }
 140                                         writer.write("/s)\n");
 141                                 }
 142                                 writeLine("End of DCCs.");
 143                         } else if (words[0].equalsIgnoreCase("get")) {
 144                                 Integer index = Ints.tryParse(words[1]);
 145                                 if ((index != null) && (index < lastResult.size())) {
 146                                         core.fetch(lastResult.get(index).bot(), lastResult.get(index).pack());
 147                                 }
 148                         } else if (words[0].equalsIgnoreCase("stats")) {
 149                                 int configuredChannelsCount = core.channels().size();
 150                                 int joinedChannelsCount = core.joinedChannels().size();
 151                                 int extraChannelsCount = core.extraChannels().size();
 152                                 Collection<Bot> bots = core.bots();
 153                                 Set<String> packNames = Sets.newHashSet();
 154                                 int packsCount = 0;
 155                                 for (Bot bot : bots) {
 156                                         packsCount += bot.packs().size();
 157                                         for (Pack pack : bot) {
 158                                                 packNames.add(pack.name());
 159                                         }
 160                                 }
 161
 162                                 writeLine(String.format("%d channels (%d joined, %d extra), %d bots offering %d packs (%d unique).", configuredChannelsCount, joinedChannelsCount, extraChannelsCount, bots.size(), packsCount, packNames.size()));
 163                         } else if (words[0].equalsIgnoreCase("connections")) {
 164                                 lastConnections.clear();
 165                                 int counter = 0;
 166                                 for (Connection connection : core.connections()) {
 167                                         lastConnections.add(connection);
 168                                         writer.write(String.format("[%d] %s:%d, %s/s\n", counter++, connection.hostname(), connection.port(), f(connection.getInputRate())));
 169                                 }
 170                                 writeLine("End of connections.");
 171                         } else if (words[0].equalsIgnoreCase("disconnect")) {
 172                                 Integer index = Ints.tryParse(words[1]);
 173                                 if ((index != null) && (index < lastConnections.size())) {
 174                                         core.closeConnection(lastConnections.get(index));
 175                                 }
 176                         }
 177
 178                         lastLine = line;
 179                 }
 180         }
 181
 182         //
 183         // EVENT HANDLERS
 184         //
 185
 186         /**
 187          * Called when a download was started.
 188          *
 189          * @param downloadStarted
 190          *              The download started event
 191          */
 192         @Subscribe
 193         public void downloadStarted(DownloadStarted downloadStarted) {
 194                 Download download = downloadStarted.download();
 195                 try {
 196                         writeLine(String.format("Download of %s (from %s, %s) has started.", download.pack().name(), download.bot().name(), download.bot().network().name()));
 197                 } catch (IOException ioe1) {
 198                         /* ignore. */
 199                 }
 200         }
 201
 202         /**
 203          * Called when a download is finished.
 204          *
 205          * @param downloadFinished
 206          *              The download finished event
 207          */
 208         @Subscribe
 209         public void downloadFinished(DownloadFinished downloadFinished) {
 210                 Download download = downloadFinished.download();
 211                 try {
 212                         writeLine(String.format("Download of %s (from %s, %s) has finished, at %s/s.", download.pack().name(), download.bot().name(), download.bot().network().name(), f(download.dccReceiver().overallRate())));
 213                 } catch (IOException ioe1) {
 214                         /* ignore. */
 215                 }
 216         }
 217
 218         /**
 219          * Called when a download fails.
 220          *
 221          * @param downloadFailed
 222          *              The download failed event
 223          */
 224         @Subscribe
 225         public void downloadFailed(DownloadFailed downloadFailed) {
 226                 Download download = downloadFailed.download();
 227                 try {
 228                         writeLine(String.format("Download of %s (from %s, %s) has failed at %.1f%% and %s/s.", download.filename(), download.bot().name(), download.bot().network().name(), download.dccReceiver().progress() * 100.0 / download.dccReceiver().size(), f(download.dccReceiver().overallRate())));
 229                 } catch (IOException ioe1) {
 230                         /* ignore. */
 231                 }
 232         }
 233
 234         /**
 235          * Displays the received message on the console.
 236          *
 237          * @param messageReceived
 238          *              The message received event
 239          */
 240         @Subscribe
 241         public void messageReceived(MessageReceived messageReceived) {
 242                 try {
 243                         writeLine(String.format("Message from %s: %s", messageReceived.source(), MessageCleaner.getDefaultInstance().clean(messageReceived.message())));
 244                 } catch (IOException e) {
 245                         /* ignore. */
 246                 }
 247         }
 248
 249         /**
 250          * Writes a generic message to the console.
 251          *
 252          * @param genericMessage
 253          *              The generic message event
 254          */
 255         @Subscribe
 256         public void genericMessage(GenericMessage genericMessage) {
 257                 try {
 258                         writeLine(genericMessage.message());
 259                 } catch (IOException ioe1) {
 260                         /* ignore. */
 261                 }
 262         }
 263
 264         //
 265         // PRIVATE METHODS
 266         //
 267
 268         /**
 269          * Writes the given line followed by an LF to the {@link #writer}.
 270          *
 271          * @param line
 272          *              The line to write
 273          * @throws IOException
 274          *              if an I/O error occurs
 275          */
 276         private void writeLine(String line) throws IOException {
 277                 writer.write(line + "\n");
 278                 writer.flush();
 279         }
 280
 281         /**
 282          * Converts large numbers into a human-friendly format, by showing SI prefixes
 283          * for ×1024 (K), ×1048576 (M), and ×1073741824 (G).
 284          *
 285          * @param number
 286          *              The number to convert
 287          * @return The converted number
 288          */
 289         private static String f(long number) {
 290                 if (number >= (1 << 30)) {
 291                         return String.format("%.1fG", number / (double) (1 << 30));
 292                 }
 293                 if (number >= (1 << 20)) {
 294                         return String.format("%.1fM", number / (double) (1 << 20));
 295                 }
 296                 if (number >= (1 << 10)) {
 297                         return String.format("%.1fK", number / (double) (1 << 10));
 298                 }
 299                 return String.format("%dB", number);
 300         }
 301
 302         /** Container for result information. */
 303         private static class Result implements Comparable<Result> {
 304
 305                 /** The bot carrying the pack. */
 306                 private final Bot bot;
 307
 308                 /** The pack. */
 309                 private final Pack pack;
 310
 311                 /**
 312                  * Creates a new result.
 313                  *
 314                  * @param bot
 315                  *              The bot carrying the pack
 316                  * @param pack
 317                  *              The pack
 318                  */
 319                 private Result(Bot bot, Pack pack) {
 320                         this.bot = bot;
 321                         this.pack = pack;
 322                 }
 323
 324                 //
 325                 // ACCESSORS
 326                 //
 327
 328                 /**
 329                  * Returns the bot carrying the pack.
 330                  *
 331                  * @return The bot carrying the pack
 332                  */
 333                 public Bot bot() {
 334                         return bot;
 335                 }
 336
 337                 /**
 338                  * Returns the pack.
 339                  *
 340                  * @return The pack
 341                  */
 342                 public Pack pack() {
 343                         return pack;
 344                 }
 345
 346                 //
 347                 // COMPARABLE METHODS
 348                 //
 349
 350                 @Override
 351                 public int compareTo(Result result) {
 352                         return pack().name().compareToIgnoreCase(result.pack().name());
 353                 }
 354
 355         }
 356
 357 }