The rename: Optional is now Integrated (#70)

src/main/java/org/geysermc/integratedpack/JavaResources.java

@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2025 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/GeyserIntegratedPack
+ */
+
+package org.geysermc.integratedpack;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.util.zip.ZipFile;
+
+public class JavaResources {
+    private static ZipFile CLIENT_JAR;
+
+    /**
+     * This function copies the files from the jar to the pack and initializes the class for getting resources when needed in renderers.
+     *
+     * @param clientJar The java client jar
+     */
+    public static void extract(ZipFile clientJar) {
+        CLIENT_JAR = clientJar;
+
+        try {
+            // Get the files we need to copy from the jar to the pack.
+            String str = Resources.getAsText("required_files.txt");
+            for (String line : str.lines().toList()) {
+                String[] paths = line.split(" ");
+                String jarAssetPath = paths[0];
+                String destinationPath = paths[1];
+                InputStream asset = getAsStream(jarAssetPath);
+
+                IntegratedPack.log("Copying " + jarAssetPath + " to " + destinationPath + "...");
+
+                String assetFileName = Path.of(jarAssetPath).toFile().getName();
+                Path destination = IntegratedPack.WORKING_PATH.resolve(destinationPath).resolve(assetFileName);
+
+                File destinationFolder = IntegratedPack.WORKING_PATH.resolve(destinationPath).toFile();
+                if (!destinationFolder.exists()) {
+                    if (!destinationFolder.mkdirs()) {
+                        IntegratedPack.log("Could not make directories for copying " + jarAssetPath + " to " + destinationPath + "!");
+                        continue;
+                    }
+                }
+
+                Files.copy(asset, destination, StandardCopyOption.REPLACE_EXISTING);
+            }
+
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * Returns a resource as an InputStream.
+     *
+     * @param resourcePath The path to the resource in the Minecraft JAR file.
+     * @return The resource as a BufferedImage.
+     */
+    public static InputStream getAsStream(String resourcePath) {
+        try {
+            return CLIENT_JAR.getInputStream(CLIENT_JAR.getEntry(resourcePath));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * Returns a resource as a String using the default charset (UTF-8).
+     *
+     * @param resourcePath The path to the resource in the Minecraft JAR file.
+     * @return The resource as a String.
+     */
+    public static String getAsText(String resourcePath) throws IOException {
+        return getAsText(resourcePath, Charset.defaultCharset());
+    }
+
+    /**
+     * Returns a resource as a String.
+     *
+     * @param resourcePath The path to the resource in the Minecraft JAR file.
+     * @param charset The charset to use for decoding the resource.
+     * @return The resource as a String.
+     */
+    public static String getAsText(String resourcePath, Charset charset) throws IOException {
+        InputStream is = getAsStream(resourcePath);
+        String text = new String(is.readAllBytes(), charset);
+        is.close();
+        return text;
+    }
+
+    /**
+     * Returns a resource as a BufferedImage.
+     *
+     * @param resourcePath The path to the resource in the Minecraft JAR file.
+     * @return The resource as a BufferedImage.
+     */
+    public static BufferedImage getAsImage(String resourcePath) throws IOException {
+        InputStream is = getAsStream(resourcePath);
+        BufferedImage image = ImageIO.read(is);
+        is.close();
+        return image;
+    }
+}