src/main/java/net/pterodactylus/xdcc/ui/stdin/ListDownloadsCommand.java

   1 /*
   2  * XdccDownloader - ListDownloadsCommand.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 static com.google.common.collect.FluentIterable.from;
  21 import static com.google.common.collect.Lists.newArrayList;
  22 import static java.util.Arrays.asList;
  23 import static net.pterodactylus.xdcc.data.Download.BY_NAME;
  24 import static net.pterodactylus.xdcc.data.Download.BY_RUNNING;
  25 import static net.pterodactylus.xdcc.ui.stdin.CommandReader.f;
  26
  27 import java.io.IOException;
  28 import java.io.Writer;
  29 import java.util.Collection;
  30 import java.util.List;
  31
  32 import net.pterodactylus.irc.DccReceiver;
  33 import net.pterodactylus.xdcc.core.Core;
  34 import net.pterodactylus.xdcc.data.Download;
  35
  36 import com.google.common.collect.Ordering;
  37
  38 /**
  39  * Command that will list all current downloads.
  40  *
  41  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  42  */
  43 public class ListDownloadsCommand implements Command {
  44
  45         /** The core to operate on. */
  46         private final Core core;
  47
  48         /**
  49          * Creates a new list downloads command.
  50          *
  51          * @param core
  52          *              The core to operate on
  53          */
  54         public ListDownloadsCommand(Core core) {
  55                 this.core = core;
  56         }
  57
  58         //
  59         // COMMAND METHODS
  60         //
  61
  62         @Override
  63         public String getName() {
  64                 return "list";
  65         }
  66
  67         @Override
  68         public Collection<String> getAliases() {
  69                 return asList("dcc");
  70         }
  71
  72         @Override
  73         public State execute(State state, List<String> parameters, Writer outputWriter) throws IOException {
  74                 int counter = 0;
  75                 List<Download> downloads = newArrayList(from(core.downloads()).toSortedList(Ordering.from(BY_NAME).compound(BY_RUNNING)));
  76                 for (Download download : downloads) {
  77                         DccReceiver dccReceiver = download.dccReceiver();
  78                         if (dccReceiver == null) {
  79                                                 /* download has not even started. */
  80                                 outputWriter.write(String.format("[%d] %s requested from %s (not started yet)\n", counter++, download.pack().name(), download.bot().name()));
  81                                 continue;
  82                         }
  83                         outputWriter.write(String.format("[%d] %s from %s (%s, ", counter++, dccReceiver.filename(), download.bot().name(), f(dccReceiver.size())));
  84                         if (dccReceiver.isRunning()) {
  85                                 outputWriter.write(String.format("%.1f%%, %s/s, %s", dccReceiver.progress() * 100.0 / dccReceiver.size(), f(dccReceiver.currentRate()), getTimeLeft(dccReceiver)));
  86                         } else {
  87                                 if (dccReceiver.progress() >= dccReceiver.size()) {
  88                                         outputWriter.write(String.format("complete, %s/s", f(dccReceiver.overallRate())));
  89                                 } else {
  90                                         outputWriter.write(String.format("aborted at %.1f%%, %s/s", dccReceiver.progress() * 100.0 / dccReceiver.size(), f(dccReceiver.currentRate())));
  91                                 }
  92                         }
  93                         outputWriter.write(")\n");
  94                 }
  95                 outputWriter.write("End of DCCs.\n");
  96                 outputWriter.flush();
  97                 return state.setLastDownloads(downloads);
  98         }
  99
 100         //
 101         // PRIVATE METHODS
 102         //
 103
 104         /**
 105          * Returns the estimated time left for the given transfer.
 106          *
 107          * @param dccReceiver
 108          *              The DCC receiver to get the time left for
 109          * @return The time left for the transfer, or “unknown” if the time can not be
 110          *         estimated
 111          */
 112         private static String getTimeLeft(DccReceiver dccReceiver) {
 113                 if ((dccReceiver.size() == -1) || (dccReceiver.currentRate() == 0)) {
 114                         return "unknown";
 115                 }
 116                 long secondsLeft = (dccReceiver.size() - dccReceiver.progress()) / dccReceiver.currentRate();
 117                 if (secondsLeft > 3600) {
 118                         return String.format("%02d:%02d:%02d", secondsLeft / 3600, (secondsLeft / 60) % 60, secondsLeft % 60);
 119                 }
 120                 return String.format("%02d:%02d", (secondsLeft / 60) % 60, secondsLeft % 60);
 121         }
 122
 123 }