Autoclose FileOutputStreams (#5753)

forge-core/src/main/java/forge/util/FileUtil.java

@@ -17,26 +17,18 @@
  */
 package forge.util;
 
-import java.io.BufferedReader;
+import org.apache.commons.lang3.StringUtils;
-import java.io.File;
+import org.apache.commons.lang3.tuple.Pair;
-import java.io.FileInputStream;
+
-import java.io.FileOutputStream;
+import java.io.*;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.OutputStream;
-import java.io.PrintWriter;
-import java.io.Reader;
 import java.net.URL;
+import java.nio.file.Files;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.concurrent.Callable;
 import java.util.regex.Pattern;
 
-import org.apache.commons.lang3.StringUtils;
-import org.apache.commons.lang3.tuple.Pair;
-
 /**
  * <p>
  * FileUtil class.
@@ -117,8 +109,8 @@ public final class FileUtil {
         File source = new File(sourceFilename);
         if (!source.exists()) { return; } //if source doesn't exist, nothing to copy
 
-        try (InputStream is = new FileInputStream(source);
+        try (InputStream is = Files.newInputStream(source.toPath());
-             OutputStream os = new FileOutputStream(new File(destFilename))){
+             OutputStream os = Files.newOutputStream(new File(destFilename).toPath())){
             byte[] buffer = new byte[1024];
             int length;
             while ((length = is.read(buffer)) > 0) {

forge-gui-desktop/src/main/java/forge/gui/framework/SLayoutIO.java

@@ -1,31 +1,5 @@
 package forge.gui.framework;
 
-import java.awt.BorderLayout;
-import java.awt.Dimension;
-import java.awt.Point;
-import java.awt.Rectangle;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.util.Collection;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map.Entry;
-import java.util.concurrent.atomic.AtomicBoolean;
-
-import javax.swing.border.EmptyBorder;
-import javax.xml.stream.XMLEventFactory;
-import javax.xml.stream.XMLEventReader;
-import javax.xml.stream.XMLEventWriter;
-import javax.xml.stream.XMLInputFactory;
-import javax.xml.stream.XMLOutputFactory;
-import javax.xml.stream.XMLStreamException;
-import javax.xml.stream.events.Attribute;
-import javax.xml.stream.events.StartElement;
-import javax.xml.stream.events.XMLEvent;
-
 import forge.Singletons;
 import forge.gui.FThreads;
 import forge.gui.SOverlayUtils;
@@ -42,6 +16,19 @@ import forge.util.maps.MapOfLists;
 import forge.view.FFrame;
 import forge.view.FView;
 
+import javax.swing.border.EmptyBorder;
+import javax.xml.stream.*;
+import javax.xml.stream.events.Attribute;
+import javax.xml.stream.events.StartElement;
+import javax.xml.stream.events.XMLEvent;
+import java.awt.*;
+import java.io.*;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map.Entry;
+import java.util.concurrent.atomic.AtomicBoolean;
+
 /**
  * Handles layout saving and loading.
  * 
@@ -297,12 +284,9 @@ public final class SLayoutIO {
         }
 
         final XMLOutputFactory out = XMLOutputFactory.newInstance();
-        FileOutputStream fos = null;
         XMLEventWriter writer = null;
-        try {
+        try(FileOutputStream fos = new FileOutputStream(fWriteTo);) {
             String layoutSerial = getLayoutSerial(file.defaultLoc);
-
-            fos = new FileOutputStream(fWriteTo);
             writer = out.createXMLEventWriter(fos);
             final List<DragCell> cells = FView.SINGLETON_INSTANCE.getDragCells();
 
@@ -337,15 +321,12 @@ public final class SLayoutIO {
             }
             writer.flush(); 
             writer.add(EF.createEndDocument());
-        } catch (FileNotFoundException | XMLStreamException e) {
+        } catch (XMLStreamException | IOException e) {
             // TODO Auto-generated catch block ignores the exception, but sends it to System.err and probably forge.log.
             e.printStackTrace();
         } finally {
             if ( writer != null )
                 try { writer.close(); } catch (XMLStreamException e) {}
-
-            if ( fos != null )
-                try { fos.close(); } catch (IOException e) {}
         }
     }
 

forge-gui-mobile/src/forge/util/LibGDXImageFetcher.java

@@ -5,12 +5,12 @@ import forge.Forge;
 import forge.gui.GuiBase;
 import forge.localinstance.properties.ForgeConstants;
 
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.net.HttpURLConnection;
 import java.net.URL;
+import java.nio.file.Files;
 
 public class LibGDXImageFetcher extends ImageFetcher {
     @Override
@@ -45,11 +45,11 @@ public class LibGDXImageFetcher extends ImageFetcher {
             FileHandle destFile = new FileHandle(newdespath + ".tmp");
             System.out.println(newdespath);
             destFile.parent().mkdirs();
-            OutputStream out = new FileOutputStream(destFile.file());
+            try(OutputStream out = Files.newOutputStream(destFile.file().toPath())) {
                 // Conversion to JPEG will be handled differently depending on the platform
                 Forge.getDeviceAdapter().convertToJPEG(is, out);
                 is.close();
-            out.close(); //close outputstream before destfile.moveto so it can delete the tmp file internally
+            }
             destFile.moveTo(new FileHandle(newdespath));
 
             System.out.println("Saved image to " + newdespath);

forge-gui/src/main/java/forge/deck/io/CardThemedLDAIO.java

@@ -1,18 +1,12 @@
 package forge.deck.io;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-import java.util.List;
-import java.util.Map;
-
-import org.apache.commons.lang3.tuple.Pair;
-
 import forge.game.GameFormat;
 import forge.localinstance.properties.ForgeConstants;
+import org.apache.commons.lang3.tuple.Pair;
+
+import java.io.*;
+import java.util.List;
+import java.util.Map;
 
 /**
  * Created by maustin on 11/05/2017.
@@ -28,7 +22,6 @@ public class CardThemedLDAIO {
         try (FileOutputStream f = new FileOutputStream(file);
              ObjectOutputStream s = new ObjectOutputStream(f)){
             s.writeObject(lda);
-            s.close();
         } catch (IOException e) {
             System.out.println("Error writing matrix data: " + e);
         }

forge-gui/src/main/java/forge/gamemodes/gauntlet/GauntletIO.java

@@ -1,23 +1,5 @@
 package forge.gamemodes.gauntlet;
 
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.FilenameFilter;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.util.ArrayList;
-import java.util.EnumMap;
-import java.util.List;
-import java.util.Map.Entry;
-import java.util.SortedSet;
-import java.util.TreeMap;
-import java.util.zip.GZIPInputStream;
-import java.util.zip.GZIPOutputStream;
-
-import org.apache.commons.lang3.StringUtils;
-
 import com.thoughtworks.xstream.XStream;
 import com.thoughtworks.xstream.converters.ConversionException;
 import com.thoughtworks.xstream.converters.Converter;
@@ -28,7 +10,6 @@ import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
 import com.thoughtworks.xstream.security.NoTypePermission;
 import com.thoughtworks.xstream.security.NullPermission;
 import com.thoughtworks.xstream.security.PrimitiveTypePermission;
-
 import forge.deck.CardPool;
 import forge.deck.Deck;
 import forge.deck.DeckSection;
@@ -37,6 +18,14 @@ import forge.item.PaperCard;
 import forge.localinstance.properties.ForgeConstants;
 import forge.model.FModel;
 import forge.util.IgnoringXStream;
+import org.apache.commons.lang3.StringUtils;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.util.*;
+import java.util.Map.Entry;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
 
 public class GauntletIO {
     /** Prompt in text field for new (unsaved) built gauntlets. */
@@ -155,11 +144,11 @@ public class GauntletIO {
     }
 
     private static void savePacked(final XStream xStream0, final GauntletData gd0) throws IOException {
-        final BufferedOutputStream bout = new BufferedOutputStream(new FileOutputStream(getGauntletFile(gd0)));
+        try(final BufferedOutputStream bout = new BufferedOutputStream(Files.newOutputStream(getGauntletFile(gd0).toPath()));
-        final GZIPOutputStream zout = new GZIPOutputStream(bout);
+            final GZIPOutputStream zout = new GZIPOutputStream(bout)) {
             xStream0.toXML(gd0, zout);
             zout.flush();
-        zout.close();
+        }
     }
 
     private static class DeckSectionToXml implements Converter {

forge-gui/src/main/java/forge/gamemodes/quest/io/QuestDataIO.java

@@ -17,36 +17,6 @@
  */
 package forge.gamemodes.quest.io;
 
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.io.StringReader;
-import java.lang.reflect.Field;
-import java.util.ArrayList;
-import java.util.EnumMap;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map.Entry;
-import java.util.zip.GZIPInputStream;
-import java.util.zip.GZIPOutputStream;
-
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
-
-import org.apache.commons.lang3.StringUtils;
-import org.w3c.dom.Attr;
-import org.w3c.dom.Document;
-import org.w3c.dom.Element;
-import org.w3c.dom.Node;
-import org.w3c.dom.NodeList;
-import org.xml.sax.InputSource;
-import org.xml.sax.SAXException;
-
 import com.thoughtworks.xstream.XStream;
 import com.thoughtworks.xstream.converters.Converter;
 import com.thoughtworks.xstream.converters.MarshallingContext;
@@ -56,7 +26,6 @@ import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
 import com.thoughtworks.xstream.security.NoTypePermission;
 import com.thoughtworks.xstream.security.NullPermission;
 import com.thoughtworks.xstream.security.PrimitiveTypePermission;
-
 import forge.card.CardEdition;
 import forge.deck.CardPool;
 import forge.deck.Deck;
@@ -66,29 +35,31 @@ import forge.gamemodes.quest.QuestController;
 import forge.gamemodes.quest.QuestEventDraft;
 import forge.gamemodes.quest.QuestMode;
 import forge.gamemodes.quest.bazaar.QuestItemType;
-import forge.gamemodes.quest.data.DeckConstructionRules;
+import forge.gamemodes.quest.data.*;
-import forge.gamemodes.quest.data.GameFormatQuest;
-import forge.gamemodes.quest.data.QuestAchievements;
-import forge.gamemodes.quest.data.QuestAssets;
-import forge.gamemodes.quest.data.QuestData;
-import forge.gamemodes.quest.data.QuestEventDraftContainer;
-import forge.gamemodes.quest.data.QuestItemCondition;
 import forge.gamemodes.quest.data.QuestPreferences.QPref;
-import forge.gamemodes.quest.data.StarRating;
+import forge.item.*;
-import forge.item.BoosterBox;
-import forge.item.BoosterPack;
-import forge.item.FatPack;
-import forge.item.InventoryItem;
-import forge.item.PaperCard;
-import forge.item.PreconDeck;
-import forge.item.SealedProduct;
-import forge.item.TournamentPack;
 import forge.localinstance.properties.ForgeConstants;
 import forge.model.FModel;
 import forge.util.FileUtil;
 import forge.util.IgnoringXStream;
 import forge.util.ItemPool;
 import forge.util.XmlUtil;
+import org.apache.commons.lang3.StringUtils;
+import org.w3c.dom.*;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import java.io.*;
+import java.lang.reflect.Field;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.*;
+import java.util.Map.Entry;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
 
 /**
  * <p>
@@ -452,19 +423,20 @@ public class QuestDataIO {
     }
 
     private static void savePacked(final String f, final XStream xStream, final QuestData qd) throws IOException {
-        final BufferedOutputStream bout = new BufferedOutputStream(new FileOutputStream(f));
+        try(
-        final GZIPOutputStream zout = new GZIPOutputStream(bout);
+            final BufferedOutputStream bout = new BufferedOutputStream(Files.newOutputStream(Paths.get(f)));
+            final GZIPOutputStream zout = new GZIPOutputStream(bout)) {
             xStream.toXML(qd, zout);
             zout.flush();
-        zout.close();
+        }
     }
 
     @SuppressWarnings("unused") // used only for debug purposes
     private static void saveUnpacked(final String f, final XStream xStream, final QuestData qd) throws IOException {
-        final BufferedOutputStream boutUnp = new BufferedOutputStream(new FileOutputStream(f));
+        try(final BufferedOutputStream boutUnp = new BufferedOutputStream(Files.newOutputStream(Paths.get(f)))) {
             xStream.toXML(qd, boutUnp);
             boutUnp.flush();
-        boutUnp.close();
+        }
     }
 
     private static class GameFormatQuestToXml implements Converter {

forge-gui/src/main/java/forge/gamemodes/tournament/TournamentIO.java

@@ -1,18 +1,5 @@
 package forge.gamemodes.tournament;
 
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.FilenameFilter;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.util.Map;
-import java.util.zip.GZIPInputStream;
-import java.util.zip.GZIPOutputStream;
-
-import org.apache.commons.lang3.StringUtils;
-
 import com.thoughtworks.xstream.XStream;
 import com.thoughtworks.xstream.converters.Converter;
 import com.thoughtworks.xstream.converters.MarshallingContext;
@@ -22,12 +9,18 @@ import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
 import com.thoughtworks.xstream.security.NoTypePermission;
 import com.thoughtworks.xstream.security.NullPermission;
 import com.thoughtworks.xstream.security.PrimitiveTypePermission;
-
 import forge.deck.CardPool;
 import forge.item.PaperCard;
 import forge.localinstance.properties.ForgeConstants;
 import forge.model.FModel;
 import forge.util.IgnoringXStream;
+import org.apache.commons.lang3.StringUtils;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.util.Map;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
 
 public class TournamentIO {
     /** Prompt in text field for new (unsaved) built gauntlets. */
@@ -130,11 +123,12 @@ public class TournamentIO {
     }
 
     private static void savePacked(final XStream xStream0, final TournamentData gd0) throws IOException {
-        final BufferedOutputStream bout = new BufferedOutputStream(new FileOutputStream(getTournamentFile(gd0)));
+        try(final BufferedOutputStream bout = new BufferedOutputStream(Files.newOutputStream(getTournamentFile(gd0).toPath()));
             final GZIPOutputStream zout = new GZIPOutputStream(bout);
+        ) {
             xStream0.toXML(gd0, zout);
             zout.flush();
-        zout.close();
+        }
     }
 
     private static class DeckSectionToXml implements Converter {

forge-gui/src/main/java/forge/gui/download/GuiDownloadZipService.java

@@ -11,6 +11,7 @@ import java.io.*;
 import java.net.HttpURLConnection;
 import java.net.URL;
 import java.nio.charset.Charset;
+import java.nio.file.Paths;
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.Map;
@@ -107,31 +108,31 @@ public class GuiDownloadZipService extends GuiDownloadService {
 
             progressBar.setMaximum(100);
 
-            // input stream to read file - with 8k buffer
-            final InputStream input = new BufferedInputStream(conn.getInputStream(), 8192);
-
             FileUtil.ensureDirectoryExists(destFolder);
-
-            // output stream to write file
             final String destFile = destFolder + filename;
-            final OutputStream output = new FileOutputStream(destFile);
+
+            // input stream to read file - with 8k buffer
+            // output stream to write file
+            try(InputStream input = new BufferedInputStream(conn.getInputStream(), 8192);
+                OutputStream output = java.nio.file.Files.newOutputStream(Paths.get(destFile))) {
 
                 int count;
                 long total = 0;
                 final byte[] data = new byte[1024];
 
                 while ((count = input.read(data)) != -1) {
-                if (cancel) { break; }
+                    if (cancel) {
+                        break;
+                    }
 
                     total += count;
                     if (progressBar != null)
-                    progressBar.setValue((int)(100 * total / contentLength));
+                        progressBar.setValue((int) (100 * total / contentLength));
                     output.write(data, 0, count);
                 }
 
                 output.flush();
-            output.close();
+            }
-            input.close();
 
             if (cancel) {
                 new File(destFile).delete();

forge-gui/src/main/java/forge/util/ZipUtil.java

@@ -1,6 +1,9 @@
 package forge.util;
 
-import java.io.*;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
 import java.util.zip.ZipOutputStream;
@@ -11,11 +14,11 @@ import java.util.zip.ZipOutputStream;
 public class ZipUtil {
     public static String backupAdvFile = "forge.adv";
     public static void zip(File source, File dest, String name) throws IOException {
+        try(
         FileOutputStream fos = new FileOutputStream(dest.getAbsolutePath() + File.separator + name);
-        ZipOutputStream zipOut = new ZipOutputStream(fos);
+        ZipOutputStream zipOut = new ZipOutputStream(fos)) {
             zipFile(source, source.getName(), zipOut);
-        zipOut.close();
+        }
-        fos.close();
     }
 
     private static void zipFile(File fileToZip, String fileName, ZipOutputStream zipOut) throws IOException {
@@ -69,12 +72,12 @@ public class ZipUtil {
 
                 // write file content
                 val.append(" * "). append(newFile.getName()).append("\n");
-                FileOutputStream fos = new FileOutputStream(newFile);
+                try(FileOutputStream fos = new FileOutputStream(newFile)) {
                     int len;
                     while ((len = zis.read(buffer)) > 0) {
                         fos.write(buffer, 0, len);
                     }
-                fos.close();
+                }
             }
             zipEntry = zis.getNextEntry();
         }