Skip libraries

Major speedup

Author: makamys

Diff for: src/main/java/makamys/coretweaks/asm/ModDiscovererTransformer.java

@@ -15,6 +15,7 @@
 import org.objectweb.asm.tree.MethodInsnNode;
 import org.objectweb.asm.tree.MethodNode;
 
+import makamys.coretweaks.util.DefaultLibraries;
 import net.minecraft.launchwrapper.IClassTransformer;
 
 public class ModDiscovererTransformer implements IClassTransformer {
@@ -81,66 +82,7 @@ private static byte[] doTransform(byte[] bytes) {
 
     public static boolean redirectKnownLibrariesContains(List<String> list, String obj, File file) {
         assert file.getName().equals(obj);
-        return list.contains(obj) || isDefaultLibrary(file);
-    }
-    
-    /* From Forge 1.12.2-14.23.5.2847 */
-    private static boolean isDefaultLibrary(File file)
-    {
-        String home = System.getProperty("java.home"); // Nullcheck just in case some JVM decides to be stupid
-        if (home != null && file.getAbsolutePath().startsWith(home)) return true;
-        // Should really pull this from the json somehow, but we dont have that at runtime.
-        String name = file.getName();
-        if (!name.endsWith(".jar")) return false;
-        String[] prefixes =
-        {
-            "launchwrapper-",
-            "asm-all-",
-            "akka-actor_2.11-",
-            "config-",
-            "scala-",
-            "jopt-simple-",
-            "lzma-",
-            "realms-",
-            "httpclient-",
-            "httpcore-",
-            "vecmath-",
-            "trove4j-",
-            "icu4j-core-mojang-",
-            "codecjorbis-",
-            "codecwav-",
-            "libraryjavawound-",
-            "librarylwjglopenal-",
-            "soundsystem-",
-            "netty-all-",
-            "guava-",
-            "commons-lang3-",
-            "commons-compress-",
-            "commons-logging-",
-            "commons-io-",
-            "commons-codec-",
-            "jinput-",
-            "jutils-",
-            "gson-",
-            "authlib-",
-            "log4j-api-",
-            "log4j-core-",
-            "lwjgl-",
-            "lwjgl_util-",
-            "twitch-",
-            "jline-",
-            "jna-",
-            "platform-",
-            "oshi-core-",
-            "netty-",
-            "libraryjavasound-",
-            "fastutil-",
-            "lombok-"
-        };
-        for (String s : prefixes)
-        {
-            if (name.startsWith(s)) return true;
-        }
-        return false;
+        return list.contains(obj) || DefaultLibraries.isDefaultLibrary(file);
     }
+
 }

Diff for: src/main/java/makamys/coretweaks/optimization/PrefixedClasspathResourceAccelerator.java

@@ -20,6 +20,7 @@
 import java.util.zip.ZipFile;
 
 import lombok.SneakyThrows;
+import makamys.coretweaks.util.DefaultLibraries;
 import net.minecraft.client.resources.DefaultResourcePack;
 import net.minecraft.launchwrapper.Launch;
 
@@ -33,6 +34,8 @@ public class PrefixedClasspathResourceAccelerator {
 
     private static final boolean DEBUG = Boolean.parseBoolean(System.getProperty("coretweaks.debugPrefixedClasspathResourceAccelerator", "false"));
 
+    private boolean skipLibraries = true;
+    
     private List<Index> classSources;
 
     private Map<String, List<Index>> directoryOwners = new HashMap<>();
@@ -41,10 +44,12 @@ private void init() {
         long t0 = System.nanoTime();
         classSources = new ArrayList<>();
         for(URL url : Launch.classLoader.getSources().stream().distinct().collect(Collectors.toList())) {
-            try {
-                classSources.add(Index.fromURL(url));
-            } catch(Exception e) {
-                LOGGER.warn("Failed to index file " + url, e);
+            if(!skipLibraries || !DefaultLibraries.isDefaultLibrary(url)) {
+                try {
+                    classSources.add(Index.fromURL(url));
+                } catch(Exception e) {
+                    LOGGER.warn("Failed to index file " + url, e);
+                }
             }
         }
         long t1 = System.nanoTime();

Diff for: src/main/java/makamys/coretweaks/util/DefaultLibraries.java

@@ -0,0 +1,75 @@
+package makamys.coretweaks.util;
+
+import java.io.File;
+import java.net.URISyntaxException;
+import java.net.URL;
+
+public class DefaultLibraries {
+    /* From Forge 1.12.2-14.23.5.2847 */
+    public static boolean isDefaultLibrary(File file)
+    {
+        String home = System.getProperty("java.home"); // Nullcheck just in case some JVM decides to be stupid
+        if (home != null && file.getAbsolutePath().startsWith(home)) return true;
+        // Should really pull this from the json somehow, but we dont have that at runtime.
+        String name = file.getName();
+        if (!name.endsWith(".jar")) return false;
+        String[] prefixes =
+        {
+            "launchwrapper-",
+            "asm-all-",
+            "akka-actor_2.11-",
+            "config-",
+            "scala-",
+            "jopt-simple-",
+            "lzma-",
+            "realms-",
+            "httpclient-",
+            "httpcore-",
+            "vecmath-",
+            "trove4j-",
+            "icu4j-core-mojang-",
+            "codecjorbis-",
+            "codecwav-",
+            "libraryjavawound-",
+            "librarylwjglopenal-",
+            "soundsystem-",
+            "netty-all-",
+            "guava-",
+            "commons-lang3-",
+            "commons-compress-",
+            "commons-logging-",
+            "commons-io-",
+            "commons-codec-",
+            "jinput-",
+            "jutils-",
+            "gson-",
+            "authlib-",
+            "log4j-api-",
+            "log4j-core-",
+            "lwjgl-",
+            "lwjgl_util-",
+            "twitch-",
+            "jline-",
+            "jna-",
+            "platform-",
+            "oshi-core-",
+            "netty-",
+            "libraryjavasound-",
+            "fastutil-",
+            "lombok-"
+        };
+        for (String s : prefixes)
+        {
+            if (name.startsWith(s)) return true;
+        }
+        return false;
+    }
+
+    public static boolean isDefaultLibrary(URL url) {
+        try {
+            return isDefaultLibrary(new File(url.toURI()));
+        } catch(URISyntaxException e) {
+            return false;
+        }
+    }
+}