替换对 JDK 内置 Pack200 的依赖，允许在 JDK14 及更高版本上构建项目 (#904)

* fix: Pack200 has been removed

* Automatically add pack200 to class path

* add license header to Pack200Utils.java

HMCL/build.gradle

@@ -1,9 +1,11 @@
 buildscript {
     repositories {
         gradlePluginPortal()
+        maven { url 'https://jitpack.io' }
     }
     dependencies {
         classpath 'org.tukaani:xz:1.8'
+        classpath 'org.glavo:pack200:0.3.0'
     }
 }
 
@@ -19,13 +21,13 @@ import java.security.Signature
 import java.security.spec.PKCS8EncodedKeySpec
 import java.util.jar.JarFile
 import java.util.jar.JarOutputStream
-import java.util.jar.Pack200
 import java.util.zip.GZIPOutputStream
 import java.util.zip.ZipFile
 import java.nio.file.Files
 
 import org.tukaani.xz.LZMA2Options
 import org.tukaani.xz.XZOutputStream
+import org.glavo.pack200.Pack200
 
 def dev = null
 def shortcommit = System.getenv("GITHUB_SHA")?.toLowerCase()?.substring(0, 7) ?: null
@@ -99,8 +101,10 @@ sourceSets {
 }
 
 compileJava11Java {
-    javaCompiler = javaToolchains.compilerFor {
+    if(JavaVersion.current() < JavaVersion.VERSION_11) {
-        languageVersion = JavaLanguageVersion.of(11)
+        javaCompiler = javaToolchains.compilerFor {
+            languageVersion = JavaLanguageVersion.of(11)
+        }
     }
     options.compilerArgs.add('--add-exports=java.base/jdk.internal.loader=ALL-UNNAMED')
     sourceCompatibility = 11
@@ -120,6 +124,7 @@ shadowJar {
                 'Main-Class': mainClassName,
                 'Multi-Release': 'true',
                 'Implementation-Version': version,
+                'Class-Path': 'pack200.jar',
                 'Add-Opens': [
                         'java.base/java.lang',
                         'java.base/java.lang.reflect',
@@ -164,8 +169,9 @@ processResources {
             def cssFile = new File(this.projectDir, "src/main/resources/" + resource)
             def bssFile = new File(this.projectDir, "build/compiled-resources/" + resource[0..-4] + "bss")
             bssFile.parentFile.mkdirs()
-            exec {
+            javaexec {
-                commandLine 'javapackager', '-createbss', '-outdir', bssFile.parent, '-srcfiles', cssFile.path
+                main = "com.sun.javafx.css.parser.Css2Bin"
+                args = [cssFile, bssFile]
             }
         }
     }

HMCL/src/main/java/org/jackhuang/hmcl/upgrade/HMCLDownloadTask.java

@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.upgrade;
 
 import org.jackhuang.hmcl.task.FileDownloadTask;
+import org.jackhuang.hmcl.util.Pack200Utils;
 import org.jackhuang.hmcl.util.io.NetworkUtils;
 import org.tukaani.xz.XZInputStream;
 
@@ -26,7 +27,6 @@ import java.io.InputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.jar.JarOutputStream;
-import java.util.jar.Pack200;
 
 class HMCLDownloadTask extends FileDownloadTask {
 
@@ -52,7 +52,7 @@ class HMCLDownloadTask extends FileDownloadTask {
                     byte[] raw = Files.readAllBytes(target);
                     try (InputStream in = new XZInputStream(new ByteArrayInputStream(raw));
                             JarOutputStream out = new JarOutputStream(Files.newOutputStream(target))) {
-                        Pack200.newUnpacker().unpack(in, out);
+                        Pack200Utils.unpack(in, out);
                     }
                     break;
 

HMCL/src/main/java/org/jackhuang/hmcl/upgrade/RemoteVersion.java

@@ -21,9 +21,9 @@ import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParseException;
 import org.jackhuang.hmcl.task.FileDownloadTask.IntegrityCheck;
+import org.jackhuang.hmcl.util.Pack200Utils;
 import org.jackhuang.hmcl.util.gson.JsonUtils;
 import org.jackhuang.hmcl.util.io.NetworkUtils;
-import org.jackhuang.hmcl.util.platform.SystemUtils;
 
 import java.io.IOException;
 import java.util.Optional;
@@ -38,7 +38,7 @@ public class RemoteVersion {
             String jarHash = Optional.ofNullable(response.get("jarsha1")).map(JsonElement::getAsString).orElse(null);
             String packXZUrl = Optional.ofNullable(response.get("packxz")).map(JsonElement::getAsString).orElse(null);
             String packXZHash = Optional.ofNullable(response.get("packxzsha1")).map(JsonElement::getAsString).orElse(null);
-            if (SystemUtils.JRE_CAPABILITY_PACK200 && packXZUrl != null && packXZHash != null) {
+            if (Pack200Utils.isSupported() && packXZUrl != null && packXZHash != null) {
                 return new RemoteVersion(version, packXZUrl, Type.PACK_XZ, new IntegrityCheck("SHA-1", packXZHash));
             } else if (jarUrl != null && jarHash != null) {
                 return new RemoteVersion(version, jarUrl, Type.JAR, new IntegrityCheck("SHA-1", jarHash));

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibraryDownloadTask.java

@@ -25,10 +25,10 @@ import org.jackhuang.hmcl.task.DownloadException;
 import org.jackhuang.hmcl.task.FileDownloadTask;
 import org.jackhuang.hmcl.task.FileDownloadTask.IntegrityCheck;
 import org.jackhuang.hmcl.task.Task;
+import org.jackhuang.hmcl.util.Pack200Utils;
 import org.jackhuang.hmcl.util.io.FileUtils;
 import org.jackhuang.hmcl.util.io.IOUtils;
 import org.jackhuang.hmcl.util.io.NetworkUtils;
-import org.jackhuang.hmcl.util.platform.SystemUtils;
 import org.tukaani.xz.XZInputStream;
 
 import java.io.*;
@@ -38,7 +38,9 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.*;
 import java.util.concurrent.CancellationException;
-import java.util.jar.*;
+import java.util.jar.JarEntry;
+import java.util.jar.JarInputStream;
+import java.util.jar.JarOutputStream;
 import java.util.logging.Level;
 
 import static org.jackhuang.hmcl.util.DigestUtils.digest;
@@ -129,7 +131,7 @@ public class LibraryDownloadTask extends Task<Void> {
             }
         }
 
-        if (SystemUtils.JRE_CAPABILITY_PACK200 && testURLExistence(url)) {
+        if (Pack200Utils.isSupported() && testURLExistence(url)) {
             List<URL> urls = dependencyManager.getDownloadProvider().injectURLWithCandidates(url + ".pack.xz");
             task = new FileDownloadTask(urls, xzFile, null);
             task.setCacheRepository(cacheRepository);
@@ -264,7 +266,7 @@ public class LibraryDownloadTask extends Task<Void> {
         }
 
         try (FileOutputStream jarBytes = new FileOutputStream(dest); JarOutputStream jos = new JarOutputStream(jarBytes)) {
-            Pack200.newUnpacker().unpack(temp.toFile(), jos);
+            Pack200Utils.unpack(temp.toFile(), jos);
 
             JarEntry checksumsFile = new JarEntry("checksums.sha1");
             checksumsFile.setTime(0L);

HMCLCore/src/main/java/org/jackhuang/hmcl/util/Pack200Utils.java

@@ -0,0 +1,123 @@
+/*
+ * Hello Minecraft! Launcher
+ * Copyright (C) 2021  huangyuhui <huanghongxun2008@126.com> and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.jackhuang.hmcl.util;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.jar.JarOutputStream;
+import java.util.logging.Level;
+
+import static org.jackhuang.hmcl.util.Logging.LOG;
+
+/**
+ * @author Glavo
+ */
+public final class Pack200Utils {
+    private Pack200Utils() {
+    }
+
+    private static final String[] IMPL_NAMES = {
+            "java.util.jar.Pack200",
+            "org.glavo.pack200.Pack200",
+            "io.pack200.Pack200"
+    };
+
+    private static final MethodHandle newUnpackerHandle;
+    private static final MethodHandle unpackHandle;
+    private static final MethodHandle unpackFileHandle;
+
+    static {
+        Class<?> pack200Class = null;
+        Class<?> unpackerClass = null;
+
+        for (String implName : IMPL_NAMES) {
+            try {
+                pack200Class = Class.forName(implName);
+                unpackerClass = Class.forName(implName + "$Unpacker");
+                break;
+            } catch (ClassNotFoundException ignored) {
+            }
+        }
+
+        if (pack200Class == null) {
+            LOG.warning("Pack200 not found");
+            newUnpackerHandle = null;
+            unpackHandle = null;
+            unpackFileHandle = null;
+        } else {
+            final MethodHandles.Lookup lookup = MethodHandles.publicLookup();
+            MethodHandle newUnpacker = null;
+            MethodHandle unpack = null;
+            MethodHandle unpackFile = null;
+            try {
+                newUnpacker = lookup.findStatic(pack200Class, "newUnpacker", MethodType.methodType(unpackerClass));
+                unpack = lookup.findVirtual(unpackerClass, "unpack", MethodType.methodType(void.class, InputStream.class, JarOutputStream.class));
+                unpackFile = lookup.findVirtual(unpackerClass, "unpack", MethodType.methodType(void.class, File.class, JarOutputStream.class));
+            } catch (Throwable e) {
+                LOG.log(Level.WARNING, "Failed to find pack200 methods", e);
+            }
+
+            if (newUnpacker != null) {
+                newUnpackerHandle = newUnpacker;
+                unpackHandle = unpack;
+                unpackFileHandle = unpackFile;
+            } else {
+                newUnpackerHandle = null;
+                unpackHandle = null;
+                unpackFileHandle = null;
+            }
+        }
+
+    }
+
+    public static boolean isSupported() {
+        return newUnpackerHandle != null;
+    }
+
+    public static void unpack(InputStream in, JarOutputStream out) throws IOException {
+        if (newUnpackerHandle == null) {
+            throw new UnsupportedOperationException("Pack200");
+        }
+
+        try {
+            unpackHandle.invoke(newUnpackerHandle.invoke(), in, out);
+        } catch (IOException | RuntimeException | Error e) {
+            throw e;
+        } catch (Throwable e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static void unpack(File in, JarOutputStream out) throws IOException {
+        if (newUnpackerHandle == null) {
+            throw new UnsupportedOperationException("Pack200");
+        }
+
+        try {
+            unpackFileHandle.invoke(newUnpackerHandle.invoke(), in, out);
+        } catch (IOException | RuntimeException | Error e) {
+            throw e;
+        } catch (Throwable e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

HMCLCore/src/main/java/org/jackhuang/hmcl/util/platform/SystemUtils.java

@@ -17,8 +17,6 @@
  */
 package org.jackhuang.hmcl.util.platform;
 
-import org.jackhuang.hmcl.util.Lang;
-
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
@@ -28,8 +26,6 @@ import java.util.List;
 public final class SystemUtils {
     private SystemUtils() {}
 
-    public static final boolean JRE_CAPABILITY_PACK200 = Lang.test(() -> Class.forName("java.util.jar.Pack200"));
-
     public static int callExternalProcess(String... command) throws IOException, InterruptedException {
         return callExternalProcess(Arrays.asList(command));
     }

README.md

@@ -42,7 +42,7 @@ Simply execute following command:
 ```bash
 ./gradlew clean build
 ```
-Make sure you have Java installed with Pack200 and JavaFX 8 at least. Liberica full JDK 8~11 is recommended.
+Make sure you have Java installed with JavaFX 8 at least. Liberica full JDK 8~16 is recommended.
 
 ## JVM Options (for debugging)
 |Parameter|Description|

build.gradle

@@ -25,6 +25,10 @@ subprojects {
         maven { url 'https://jitpack.io' }
     }
 
+    checkstyle {
+        sourceSets = []
+    }
+
     sourceCompatibility = 1.8
     compileJava.options.encoding = "UTF-8"
     compileTestJava.options.encoding = "UTF-8"