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