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