feat: migrate to DexPatchBundle and JarPatchBundle

Signed-off-by: oSumAtrIX <johan.melkonyan1@web.de>

src/main/kotlin/app/revanced/patcher/util/ProxyBackedClassList.kt

@@ -16,7 +16,7 @@ class ProxyBackedClassList(internal val internalClasses: MutableList<ClassDef>)
     /**
      * Apply all resolved classes into [internalClasses] and clean the [proxies] list.
      */
-    fun applyProxies() {
+    internal fun applyProxies() {
         // FIXME: check if this could cause issues when multiple patches use the same proxy
         proxies.removeIf { proxy ->
             // if the proxy is unused, keep it in the list

src/main/kotlin/app/revanced/patcher/util/patch/PatchLoader.kt

@@ -19,11 +19,7 @@ object PatchLoader {
             val entry = entries.nextElement()
             if (!entry.name.endsWith(".class") || entry.name.contains("$")) continue
 
-            val clazz = classLoader.loadClass(
+            val clazz = classLoader.loadClass(entry.realName.replace('/', '.').replace(".class", ""))
-                entry.name
-                    .replace('/', '.')
-                    .replace(".class", "")
-            )
 
             if (!clazz.isAnnotationPresent(app.revanced.patcher.patch.annotations.Patch::class.java)) continue
 

src/main/kotlin/app/revanced/patcher/util/patch/base/PatchBundle.kt

@@ -0,0 +1,17 @@
+package app.revanced.patcher.util.patch.base
+
+import app.revanced.patcher.patch.base.Patch
+import java.io.File
+
+/**
+ * @param patchBundlePath The path to the patch bundle.
+ */
+abstract class PatchBundle(patchBundlePath: String) : File(patchBundlePath) {
+    internal fun loadPatches(classLoader: ClassLoader, classNames: Iterator<String>) = buildList {
+        classNames.forEach { className ->
+            val clazz = classLoader.loadClass(className)
+            if (!clazz.isAnnotationPresent(app.revanced.patcher.patch.annotations.Patch::class.java)) return@forEach
+            @Suppress("UNCHECKED_CAST") this.add(clazz as Class<Patch<*>>)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/patch/implementation/DexPatchBundle.kt

@@ -0,0 +1,17 @@
+package app.revanced.patcher.util.patch.implementation
+
+import app.revanced.patcher.util.patch.base.PatchBundle
+import app.revanced.patcher.util.patch.util.StringIterator
+import org.jf.dexlib2.DexFileFactory
+
+/**
+ * A patch bundle of the ReVanced [DexPatchBundle] format.
+ * @param patchBundlePath The path to a patch bundle of dex format.
+ * @param dexClassLoader The dex class loader.
+ */
+class DexPatchBundle(patchBundlePath: String, private val dexClassLoader: ClassLoader) : PatchBundle(patchBundlePath) {
+    fun loadPatches() = loadPatches(dexClassLoader,
+        StringIterator(DexFileFactory.loadDexFile(path, null).classes.iterator()) { classDef ->
+            classDef.type.substring(1, classDef.length - 1).replace('/', '.')
+        })
+}

src/main/kotlin/app/revanced/patcher/util/patch/implementation/JarPatchBundle.kt

@@ -0,0 +1,18 @@
+package app.revanced.patcher.util.patch.implementation
+
+import app.revanced.patcher.util.patch.base.PatchBundle
+import app.revanced.patcher.util.patch.util.StringIterator
+import java.net.URLClassLoader
+import java.util.jar.JarFile
+
+/**
+ * A patch bundle of the ReVanced [JarPatchBundle] format.
+ * @param patchBundlePath The path to the patch bundle.
+ */
+class JarPatchBundle(patchBundlePath: String) : PatchBundle(patchBundlePath) {
+    fun loadPatches() = loadPatches(URLClassLoader(arrayOf(this.toURI().toURL()), null), StringIterator(
+        JarFile(this).entries().iterator()
+    ) {
+        it.realName.replace('/', '.').replace(".class", "")
+    })
+}

src/main/kotlin/app/revanced/patcher/util/patch/util/StringIterator.kt

@@ -0,0 +1,10 @@
+package app.revanced.patcher.util.patch.util
+
+internal class StringIterator<T, I : Iterator<T>>(
+    private val iterator: I,
+    private val _next: (T) -> String
+) : Iterator<String> {
+    override fun hasNext() = iterator.hasNext()
+
+    override fun next() = _next(iterator.next())
+}