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