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 (Download download : core.downloads()) {
 122                                         DccReceiver dccReceiver = download.dccReceiver();
 123                                         if (dccReceiver == null) {
 124                                                 /* download has not even started. */
 125                                                 writer.write(String.format("[%d] %s requested from %s (not started yet)\n", counter++, download.pack().name(), download.bot().name()));
 126                                                 continue;
 127                                         }
 128                                         writer.write(String.format("[%d] %s from %s (%s, ", counter++, dccReceiver.filename(), download.bot().name(), f(dccReceiver.size())));
 129                                         if (dccReceiver.isRunning()) {
 130                                                 writer.write(String.format("%.1f%%, %s", dccReceiver.progress() * 100.0 / dccReceiver.size(), f(dccReceiver.currentRate())));
 131                                         } else {
 132                                                 if (dccReceiver.progress() >= dccReceiver.size()) {
 133                                                         writer.write(String.format("complete, %s", f(dccReceiver.overallRate())));
 134                                                 } else {
 135                                                         writer.write(String.format("aborted at %.1f%%, %s", dccReceiver.progress() * 100.0 / dccReceiver.size(), f(dccReceiver.currentRate())));
 136                                                 }
 137                                         }
 138                                         writer.write("/s)\n");
 139                                 }
 140                                 writeLine("End of DCCs.");
 141                         } else if (words[0].equalsIgnoreCase("get")) {
 142                                 Integer index = Ints.tryParse(words[1]);
 143                                 if ((index != null) && (index < lastResult.size())) {
 144                                         core.fetch(lastResult.get(index).bot(), lastResult.get(index).pack());
 145                                 }
 146                         } else if (words[0].equalsIgnoreCase("stats")) {
 147                                 int configuredChannelsCount = core.channels().size();
 148                                 int joinedChannelsCount = core.joinedChannels().size();
 149                                 int extraChannelsCount = core.extraChannels().size();
 150                                 Collection<Bot> bots = core.bots();
 151                                 Set<String> packNames = Sets.newHashSet();
 152                                 int packsCount = 0;
 153                                 for (Bot bot : bots) {
 154                                         packsCount += bot.packs().size();
 155                                         for (Pack pack : bot) {
 156                                                 packNames.add(pack.name());
 157                                         }
 158                                 }
 159
 160                                 writeLine(String.format("%d channels (%d joined, %d extra), %d bots offering %d packs (%d unique).", configuredChannelsCount, joinedChannelsCount, extraChannelsCount, bots.size(), packsCount, packNames.size()));
 161                         }
 162
 163                         lastLine = line;
 164                 }
 165         }
 166
 167         //
 168         // EVENT HANDLERS
 169         //
 170
 171         /**
 172          * Called when a download was started.
 173          *
 174          * @param downloadStarted
 175          *              The download started event
 176          */
 177         @Subscribe
 178         public void downloadStarted(DownloadStarted downloadStarted) {
 179                 Download download = downloadStarted.download();
 180                 try {
 181                         writeLine(String.format("Download of %s (from %s, %s) has started.", download.pack().name(), download.bot().name(), download.bot().network().name()));
 182                 } catch (IOException ioe1) {
 183                         /* ignore. */
 184                 }
 185         }
 186
 187         /**
 188          * Called when a download is finished.
 189          *
 190          * @param downloadFinished
 191          *              The download finished event
 192          */
 193         @Subscribe
 194         public void downloadFinished(DownloadFinished downloadFinished) {
 195                 Download download = downloadFinished.download();
 196                 try {
 197                         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())));
 198                 } catch (IOException ioe1) {
 199                         /* ignore. */
 200                 }
 201         }
 202
 203         /**
 204          * Called when a download fails.
 205          *
 206          * @param downloadFailed
 207          *              The download failed event
 208          */
 209         @Subscribe
 210         public void downloadFailed(DownloadFailed downloadFailed) {
 211                 Download download = downloadFailed.download();
 212                 try {
 213                         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())));
 214                 } catch (IOException ioe1) {
 215                         /* ignore. */
 216                 }
 217         }
 218
 219         /**
 220          * Displays the received message on the console.
 221          *
 222          * @param messageReceived
 223          *              The message received event
 224          */
 225         @Subscribe
 226         public void messageReceived(MessageReceived messageReceived) {
 227                 try {
 228                         writeLine(String.format("Message from %s: %s", messageReceived.source(), MessageCleaner.getDefaultInstance().clean(messageReceived.message())));
 229                 } catch (IOException e) {
 230                         /* ignore. */
 231                 }
 232         }
 233
 234         /**
 235          * Writes a generic message to the console.
 236          *
 237          * @param genericMessage
 238          *              The generic message event
 239          */
 240         @Subscribe
 241         public void genericMessage(GenericMessage genericMessage) {
 242                 try {
 243                         writeLine(genericMessage.message());
 244                 } catch (IOException ioe1) {
 245                         /* ignore. */
 246                 }
 247         }
 248
 249         //
 250         // PRIVATE METHODS
 251         //
 252
 253         /**
 254          * Writes the given line followed by an LF to the {@link #writer}.
 255          *
 256          * @param line
 257          *              The line to write
 258          * @throws IOException
 259          *              if an I/O error occurs
 260          */
 261         private void writeLine(String line) throws IOException {
 262                 writer.write(line + "\n");
 263                 writer.flush();
 264         }
 265
 266         /**
 267          * Converts large numbers into a human-friendly format, by showing SI prefixes
 268          * for ×1024 (K), ×1048576 (M), and ×1073741824 (G).
 269          *
 270          * @param number
 271          *              The number to convert
 272          * @return The converted number
 273          */
 274         private static String f(long number) {
 275                 if (number >= (1 << 30)) {
 276                         return String.format("%.1fG", number / (double) (1 << 30));
 277                 }
 278                 if (number >= (1 << 20)) {
 279                         return String.format("%.1fM", number / (double) (1 << 20));
 280                 }
 281                 if (number >= (1 << 10)) {
 282                         return String.format("%.1fK", number / (double) (1 << 10));
 283                 }
 284                 return String.format("%dB", number);
 285         }
 286
 287         /** Container for result information. */
 288         private static class Result implements Comparable<Result> {
 289
 290                 /** The bot carrying the pack. */
 291                 private final Bot bot;
 292
 293                 /** The pack. */
 294                 private final Pack pack;
 295
 296                 /**
 297                  * Creates a new result.
 298                  *
 299                  * @param bot
 300                  *              The bot carrying the pack
 301                  * @param pack
 302                  *              The pack
 303                  */
 304                 private Result(Bot bot, Pack pack) {
 305                         this.bot = bot;
 306                         this.pack = pack;
 307                 }
 308
 309                 //
 310                 // ACCESSORS
 311                 //
 312
 313                 /**
 314                  * Returns the bot carrying the pack.
 315                  *
 316                  * @return The bot carrying the pack
 317                  */
 318                 public Bot bot() {
 319                         return bot;
 320                 }
 321
 322                 /**
 323                  * Returns the pack.
 324                  *
 325                  * @return The pack
 326                  */
 327                 public Pack pack() {
 328                         return pack;
 329                 }
 330
 331                 //
 332                 // COMPARABLE METHODS
 333                 //
 334
 335                 @Override
 336                 public int compareTo(Result result) {
 337                         return pack().name().compareToIgnoreCase(result.pack().name());
 338                 }
 339
 340         }
 341
 342 }