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                                 if ((words.length == 1) || ("all".equals(words[1]))) {
 173                                         for (Connection connection : lastConnections) {
 174                                                 core.closeConnection(connection);
 175                                         }
 176                                 } else {
 177                                         Integer index = Ints.tryParse(words[1]);
 178                                         if ((index != null) && (index < lastConnections.size())) {
 179                                                 core.closeConnection(lastConnections.get(index));
 180                                         }
 181                                 }
 182                         }
 183
 184                         lastLine = line;
 185                 }
 186         }
 187
 188         //
 189         // EVENT HANDLERS
 190         //
 191
 192         /**
 193          * Called when a download was started.
 194          *
 195          * @param downloadStarted
 196          *              The download started event
 197          */
 198         @Subscribe
 199         public void downloadStarted(DownloadStarted downloadStarted) {
 200                 Download download = downloadStarted.download();
 201                 try {
 202                         writeLine(String.format("Download of %s (from %s, %s) has started.", download.pack().name(), download.bot().name(), download.bot().network().name()));
 203                 } catch (IOException ioe1) {
 204                         /* ignore. */
 205                 }
 206         }
 207
 208         /**
 209          * Called when a download is finished.
 210          *
 211          * @param downloadFinished
 212          *              The download finished event
 213          */
 214         @Subscribe
 215         public void downloadFinished(DownloadFinished downloadFinished) {
 216                 Download download = downloadFinished.download();
 217                 try {
 218                         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())));
 219                 } catch (IOException ioe1) {
 220                         /* ignore. */
 221                 }
 222         }
 223
 224         /**
 225          * Called when a download fails.
 226          *
 227          * @param downloadFailed
 228          *              The download failed event
 229          */
 230         @Subscribe
 231         public void downloadFailed(DownloadFailed downloadFailed) {
 232                 Download download = downloadFailed.download();
 233                 try {
 234                         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())));
 235                 } catch (IOException ioe1) {
 236                         /* ignore. */
 237                 }
 238         }
 239
 240         /**
 241          * Displays the received message on the console.
 242          *
 243          * @param messageReceived
 244          *              The message received event
 245          */
 246         @Subscribe
 247         public void messageReceived(MessageReceived messageReceived) {
 248                 try {
 249                         writeLine(String.format("Message from %s: %s", messageReceived.source(), MessageCleaner.getDefaultInstance().clean(messageReceived.message())));
 250                 } catch (IOException e) {
 251                         /* ignore. */
 252                 }
 253         }
 254
 255         /**
 256          * Writes a generic message to the console.
 257          *
 258          * @param genericMessage
 259          *              The generic message event
 260          */
 261         @Subscribe
 262         public void genericMessage(GenericMessage genericMessage) {
 263                 try {
 264                         writeLine(genericMessage.message());
 265                 } catch (IOException ioe1) {
 266                         /* ignore. */
 267                 }
 268         }
 269
 270         //
 271         // PRIVATE METHODS
 272         //
 273
 274         /**
 275          * Writes the given line followed by an LF to the {@link #writer}.
 276          *
 277          * @param line
 278          *              The line to write
 279          * @throws IOException
 280          *              if an I/O error occurs
 281          */
 282         private void writeLine(String line) throws IOException {
 283                 writer.write(line + "\n");
 284                 writer.flush();
 285         }
 286
 287         /**
 288          * Converts large numbers into a human-friendly format, by showing SI prefixes
 289          * for ×1024 (K), ×1048576 (M), and ×1073741824 (G).
 290          *
 291          * @param number
 292          *              The number to convert
 293          * @return The converted number
 294          */
 295         private static String f(long number) {
 296                 if (number >= (1 << 30)) {
 297                         return String.format("%.1fG", number / (double) (1 << 30));
 298                 }
 299                 if (number >= (1 << 20)) {
 300                         return String.format("%.1fM", number / (double) (1 << 20));
 301                 }
 302                 if (number >= (1 << 10)) {
 303                         return String.format("%.1fK", number / (double) (1 << 10));
 304                 }
 305                 return String.format("%dB", number);
 306         }
 307
 308         /** Container for result information. */
 309         private static class Result implements Comparable<Result> {
 310
 311                 /** The bot carrying the pack. */
 312                 private final Bot bot;
 313
 314                 /** The pack. */
 315                 private final Pack pack;
 316
 317                 /**
 318                  * Creates a new result.
 319                  *
 320                  * @param bot
 321                  *              The bot carrying the pack
 322                  * @param pack
 323                  *              The pack
 324                  */
 325                 private Result(Bot bot, Pack pack) {
 326                         this.bot = bot;
 327                         this.pack = pack;
 328                 }
 329
 330                 //
 331                 // ACCESSORS
 332                 //
 333
 334                 /**
 335                  * Returns the bot carrying the pack.
 336                  *
 337                  * @return The bot carrying the pack
 338                  */
 339                 public Bot bot() {
 340                         return bot;
 341                 }
 342
 343                 /**
 344                  * Returns the pack.
 345                  *
 346                  * @return The pack
 347                  */
 348                 public Pack pack() {
 349                         return pack;
 350                 }
 351
 352                 //
 353                 // COMPARABLE METHODS
 354                 //
 355
 356                 @Override
 357                 public int compareTo(Result result) {
 358                         return pack().name().compareToIgnoreCase(result.pack().name());
 359                 }
 360
 361         }
 362
 363 }