Initial commit

src/main/java/eu/mhsl/minenet/minigames/util/ResourceUtils.java

@@ -0,0 +1,61 @@
+package eu.mhsl.minenet.minigames.util;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.nio.file.*;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.Comparator;
+import java.util.Map;
+import java.util.Objects;
+import java.util.stream.Stream;
+
+/**
+ * Class from the Minestom Arena example
+ */
+public final class ResourceUtils {
+    public static void extractResource(String source) throws URISyntaxException, IOException {
+        final URI uri = Objects.requireNonNull(ResourceUtils.class.getResource("/" + source)).toURI();
+        FileSystem fileSystem = null;
+
+        // Only create a new filesystem if it's a jar file
+        // (People can run this from their IDE too)
+        if (uri.toString().startsWith("jar:"))
+            fileSystem = FileSystems.newFileSystem(uri, Map.of("create", "true"));
+
+        try {
+            final Path jarPath = Paths.get(uri);
+            final Path target = Path.of("resources/" + source);
+            if (Files.exists(target)) {
+                try (Stream<Path> pathStream = Files.walk(target)) {
+                    pathStream.sorted(Comparator.reverseOrder())
+                            .forEach(path -> {
+                                try {
+                                    Files.delete(path);
+                                } catch (IOException e) {
+                                    throw new RuntimeException(e);
+                                }
+                            });
+                }
+            }
+            Files.walkFileTree(jarPath, new SimpleFileVisitor<>() {
+                @Override
+                public FileVisitResult preVisitDirectory(final Path dir, final BasicFileAttributes attrs) throws IOException {
+                    Path currentTarget = target.resolve(jarPath.relativize(dir).toString());
+                    Files.createDirectories(currentTarget);
+                    return FileVisitResult.CONTINUE;
+                }
+
+                @Override
+                public FileVisitResult visitFile(final Path file, final BasicFileAttributes attrs) throws IOException {
+                    final Path to = target.resolve(jarPath.relativize(file).toString());
+                    Files.copy(file, to, StandardCopyOption.REPLACE_EXISTING);
+                    return FileVisitResult.CONTINUE;
+                }
+            });
+        } finally {
+            if (fileSystem != null)
+                fileSystem.close();
+        }
+    }
+}