chore(release): 1.0.0-dev.12 [skip ci]

# [1.0.0-dev.12](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.11...v1.0.0-dev.12) (2022-05-22)

### Bug Fixes

* using old instance of `Androlib` when saving ([5630e49](5630e49663))

.github/ISSUE_TEMPLATE/bug-issue.yml

@@ -1,60 +0,0 @@
-name: 🐞 Bug report
-description: Report a very clearly broken issue.
-title: 'bug: <title>'
-labels: [bug]
-body:
-  - type: markdown
-    attributes:
-      value: |
-        # ReVanced bug report
-
-        Important to note that your issue may have already been reported before. Please check for existing issues [here](https://github.com/revanced/revanced-patcher/labels/bug).
-
-  - type: dropdown
-    attributes:
-      label: Type
-      options:
-        - Crash
-        - Cosmetic
-        - Other
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Bug description
-      description: How did you find the bug? Any additional details that might help?
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Steps to reproduce
-      description: Add the steps to reproduce this bug including your environment.
-      placeholder: Step 1. Download some files. Step 2. ...
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Relevant log output
-      description: Please copy and paste any relevant log output. This will be automatically formatted into code, so no need for backticks.
-      render: shell
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Screenshots or videos
-      description: Add screenshots or videos that show the bug here.
-      placeholder: Drag and drop the screenshots/videos into this box.
-    validations:
-      required: false
-  - type: textarea
-    attributes:
-      label: Solution
-      description: If applicable, add a possible solution.
-    validations:
-      required: false
-  - type: textarea
-    attributes:
-      label: Additional context
-      description: Add additional context here.
-    validations:
-      required: false

.github/ISSUE_TEMPLATE/config.yml

@@ -1,8 +0,0 @@
-blank_issues_enabled: false
-contact_links:
-  - name: 📃 Documentation
-    url: https://github.com/revanced/revanced-documentation/
-    about: Don't know how or where to start? Check out our documentation!
-  - name: 🗨 Discussions
-    url: https://github.com/revanced/revanced-suggestions/discussions
-    about: Got something you think should change or be added? Search for or start a new discussion!

.github/ISSUE_TEMPLATE/feature-issue.yml

@@ -1,46 +0,0 @@
-name: ⭐ Feature request
-description: Create a detailed feature request.
-title: 'feat: <title>'
-labels: [feature-request]
-body:
-  - type: markdown
-    attributes:
-      value: |
-        # ReVanced feature request
-        
-        Do not submit requests for patches here. Please submit them [here](https://github.com/orgs/revanced/discussions/categories/patches) instead.
-        Important to note that your feature request may have already been made before. Please check for existing feature requests [here](https://github.com/revanced/revanced-patcher/labels/feature-request).
-
-  - type: dropdown
-    attributes:
-      label: Type
-      options:
-        - Functionality
-        - Cosmetic
-        - Other
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Issue
-      description: What is the current problem. Why does it require a feature request?
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Feature
-      description: Describe your feature in detail. How does it solve the issue?
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Motivation
-      description: Why should your feature should be considered?
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: Additional context
-      description: Add additional context here.
-    validations:
-      required: false

.github/workflows/release.yml

@@ -1,6 +1,5 @@
 name: Release
 on:
-  workflow_dispatch:
   push:
     branches:
       - main
@@ -28,6 +27,8 @@ jobs:
         uses: actions/setup-node@v2
         with:
           node-version: "lts/*"
+      - name: Make gradlew executable
+        run: chmod +x gradlew
       - name: Build with Gradle
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.idea/.gitignore

@@ -6,4 +6,3 @@
 # Datasource local storage ignored files
 /dataSources/
 /dataSources.local.xml
-/kotlinc.xml

.releaserc

@@ -7,11 +7,7 @@
     }
   ],
   "plugins": [
-    ["@semantic-release/commit-analyzer", {
+    "@semantic-release/commit-analyzer",
-      "releaseRules": [
-        {"type": "build", "release": "patch"}
-      ]
-    }],
     "@semantic-release/release-notes-generator",
     "@semantic-release/changelog",
     "gradle-semantic-release-plugin",

README.md

@@ -1,2 +1 @@
 # Patcher
-Patcher framework used in the ReVanced project.

build.gradle.kts

@@ -1,33 +1,35 @@
 plugins {
-    kotlin("jvm") version "1.7.0"
+    kotlin("jvm") version "1.6.20"
     java
     `maven-publish`
 }
 
 group = "app.revanced"
 
-val githubUsername: String = project.findProperty("gpr.user") as? String ?: System.getenv("GITHUB_ACTOR")
-val githubPassword: String = project.findProperty("gpr.key") as? String ?: System.getenv("GITHUB_TOKEN")
-
 repositories {
     mavenCentral()
     maven {
         url = uri("https://maven.pkg.github.com/revanced/multidexlib2")
         credentials {
-            username = githubUsername
+            // DO NOT set these variables in the project's gradle.properties.
-            password = githubPassword
+            // Instead, you should set them in:
+            // Windows: %homepath%\.gradle\gradle.properties
+            // Linux: ~/.gradle/gradle.properties
+            username = project.findProperty("gpr.user") as String? ?: System.getenv("GITHUB_ACTOR") // DO NOT CHANGE!
+            password = project.findProperty("gpr.key") as String? ?: System.getenv("GITHUB_TOKEN") // DO NOT CHANGE!
         }
     }
 }
 
 dependencies {
-    implementation("xpp3:xpp3:1.1.4c")
+    implementation(kotlin("stdlib"))
-    implementation("org.smali:smali:2.5.2")
+
-    implementation("app.revanced:multidexlib2:2.5.2.r2")
+    api("org.apktool:apktool-lib:2.6.1")
-    implementation("org.apktool:apktool-lib:2.7.0-SNAPSHOT")
+    api("app.revanced:multidexlib2:2.5.2.r2")
+    api("org.smali:smali:2.5.2")
 
-    implementation(kotlin("reflect"))
     testImplementation(kotlin("test"))
+    implementation(kotlin("reflect"))
 }
 
 tasks {
@@ -37,18 +39,18 @@ tasks {
             events("PASSED", "SKIPPED", "FAILED")
         }
     }
-    processResources {
-        expand("projectVersion" to project.version)
-    }
 }
 
 java {
     withSourcesJar()
+    withJavadocJar()
 }
 
+val isGitHubCI = System.getenv("GITHUB_ACTOR") != null
+
 publishing {
     repositories {
-        if (System.getenv("GITHUB_ACTOR") != null)
+        if (isGitHubCI) {
             maven {
                 name = "GitHubPackages"
                 url = uri("https://maven.pkg.github.com/revanced/revanced-patcher")
@@ -57,12 +59,13 @@ publishing {
                     password = System.getenv("GITHUB_TOKEN")
                 }
             }
-        else
+        } else {
             mavenLocal()
+        }
     }
     publications {
         register<MavenPublication>("gpr") {
             from(components["java"])
         }
     }
-}
+}

gradle.properties

@@ -1,2 +1,2 @@
 kotlin.code.style = official
-version = 4.4.0
+version = 1.0.0-dev.12

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

src/main/kotlin/app/revanced/patcher/PatcherData.kt

@@ -1,19 +0,0 @@
-package app.revanced.patcher
-
-import app.revanced.patcher.data.Data
-import app.revanced.patcher.data.PackageMetadata
-import app.revanced.patcher.data.impl.BytecodeData
-import app.revanced.patcher.data.impl.ResourceData
-import app.revanced.patcher.patch.Patch
-import org.jf.dexlib2.iface.ClassDef
-import java.io.File
-
-data class PatcherData(
-    internal val internalClasses: MutableList<ClassDef>,
-    internal val resourceCacheDirectory: String,
-    val packageMetadata: PackageMetadata
-) {
-    internal val patches = mutableListOf<Class<out Patch<Data>>>()
-    internal val bytecodeData = BytecodeData(internalClasses)
-    internal val resourceData = ResourceData(File(resourceCacheDirectory))
-}

src/main/kotlin/app/revanced/patcher/PatcherOptions.kt

@@ -1,23 +0,0 @@
-package app.revanced.patcher
-
-import app.revanced.patcher.logging.Logger
-import app.revanced.patcher.logging.impl.NopLogger
-import java.io.File
-
-/**
- * Options for the [Patcher].
- * @param inputFile The input file (usually an apk file).
- * @param resourceCacheDirectory Directory to cache resources.
- * @param patchResources Weather to use the resource patcher. Resources will still need to be decoded.
- * @param aaptPath Optional path to a custom aapt binary.
- * @param frameworkFolderLocation Optional path to a custom framework folder.
- * @param logger Custom logger implementation for the [Patcher].
- */
-data class PatcherOptions(
-    internal val inputFile: File,
-    internal val resourceCacheDirectory: String,
-    internal val patchResources: Boolean = false,
-    internal val aaptPath: String = "",
-    internal val frameworkFolderLocation: String? = null,
-    internal val logger: Logger = NopLogger
-)

src/main/kotlin/app/revanced/patcher/PatcherResult.kt

@@ -1,16 +0,0 @@
-package app.revanced.patcher
-
-import app.revanced.patcher.util.dex.DexFile
-import java.io.File
-
-/**
- * The result of a patcher.
- * @param dexFiles The patched dex files.
- * @param doNotCompress List of relative paths to files to exclude from compressing.
- * @param resourceFile File containing resources that need to be extracted into the APK.
- */
-data class PatcherResult(
-    val dexFiles: List<DexFile>,
-    val doNotCompress: List<String>? = null,
-    val resourceFile: File?
-)

src/main/kotlin/app/revanced/patcher/annotation/CompatibilityAnnotation.kt

@@ -1,11 +1,11 @@
 package app.revanced.patcher.annotation
 
-import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patcher.patch.base.Patch
-import app.revanced.patcher.patch.Patch
+import app.revanced.patcher.signature.implementation.method.MethodSignature
 
 /**
- * Annotation to constrain a [Patch] or [MethodFingerprint] to compatible packages.
+ * Annotation to constrain a [Patch] or [MethodSignature] to compatible packages.
- * @param compatiblePackages A list of packages a [Patch] or [MethodFingerprint] is compatible with.
+ * @param compatiblePackages A list of packages a [Patch] or [MethodSignature] is compatible with.
  */
 @Target(AnnotationTarget.CLASS)
 @Retention(AnnotationRetention.RUNTIME)
@@ -17,12 +17,12 @@ annotation class Compatibility(
 /**
  * Annotation to represent packages a patch can be compatible with.
  * @param name The package identifier name.
- * @param versions The versions of the package the [Patch] or [MethodFingerprint]is compatible with.
+ * @param versions The versions of the package the [Patch] or [MethodSignature]is compatible with.
  */
 @Target()
 @Retention(AnnotationRetention.RUNTIME)
 @MustBeDocumented
 annotation class Package(
     val name: String,
-    val versions: Array<String> = [],
+    val versions: Array<String>
-)
+)

src/main/kotlin/app/revanced/patcher/annotation/Deprecated.kt

@@ -1,19 +0,0 @@
-package app.revanced.patcher.annotation
-
-import app.revanced.patcher.data.Data
-import app.revanced.patcher.patch.Patch
-import kotlin.reflect.KClass
-
-/**
- * Declares a [Patch] deprecated for removal.
- * @param reason The reason why the patch is deprecated.
- * @param replacement The replacement for the deprecated patch, if any.
- */
-@Target(AnnotationTarget.CLASS)
-@Retention(AnnotationRetention.RUNTIME)
-@MustBeDocumented
-annotation class PatchDeprecated(
-    val reason: String,
-    val replacement: KClass<out Patch<Data>> = Patch::class
-    // Values cannot be nullable in annotations, so this will have to do.
-)

src/main/kotlin/app/revanced/patcher/annotation/MetadataAnnotation.kt

@@ -1,11 +1,11 @@
 package app.revanced.patcher.annotation
 
-import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patcher.patch.base.Patch
-import app.revanced.patcher.patch.Patch
+import app.revanced.patcher.signature.implementation.method.MethodSignature
 
 /**
- * Annotation to name a [Patch] or [MethodFingerprint].
+ * Annotation to name a [Patch] or [MethodSignature].
- * @param name A suggestive name for the [Patch] or [MethodFingerprint].
+ * @param name A suggestive name for the [Patch] or [MethodSignature].
  */
 @Target(AnnotationTarget.CLASS)
 @Retention(AnnotationRetention.RUNTIME)
@@ -15,8 +15,8 @@ annotation class Name(
 )
 
 /**
- * Annotation to describe a [Patch] or [MethodFingerprint].
+ * Annotation to describe a [Patch] or [MethodSignature].
- * @param description A description for the [Patch] or [MethodFingerprint].
+ * @param description A description for the [Patch] or [MethodSignature].
  */
 @Target(AnnotationTarget.CLASS)
 @Retention(AnnotationRetention.RUNTIME)
@@ -27,8 +27,8 @@ annotation class Description(
 
 
 /**
- * Annotation to version a [Patch] or [MethodFingerprint].
+ * Annotation to version a [Patch] or [MethodSignature].
- * @param version The version of a [Patch] or [MethodFingerprint].
+ * @param version The version of a [Patch] or [MethodSignature].
  */
 @Target(AnnotationTarget.CLASS)
 @Retention(AnnotationRetention.RUNTIME)

src/main/kotlin/app/revanced/patcher/annotation/SincePatcher.kt

@@ -1,13 +0,0 @@
-package app.revanced.patcher.annotation
-
-import app.revanced.patcher.patch.Patch
-import app.revanced.patcher.Patcher
-
-/**
- * Declares a [Patch] deprecated for removal.
- * @param version The minimum version of the [Patcher] this [Patch] supports.
- */
-@Target(AnnotationTarget.CLASS)
-@Retention(AnnotationRetention.RUNTIME)
-@MustBeDocumented
-annotation class SincePatcher(val version: String)

src/main/kotlin/app/revanced/patcher/data/Data.kt

@@ -1,9 +0,0 @@
-package app.revanced.patcher.data
-
-import app.revanced.patcher.data.impl.BytecodeData
-import app.revanced.patcher.data.impl.ResourceData
-
-/**
- * Constraint interface for [BytecodeData] and [ResourceData]
- */
-interface Data

src/main/kotlin/app/revanced/patcher/data/PackageMetadata.kt

@@ -1,13 +0,0 @@
-package app.revanced.patcher.data
-
-import brut.androlib.meta.MetaInfo
-
-/**
- * Metadata about a package.
- */
-class PackageMetadata {
-    lateinit var packageName: String
-    lateinit var packageVersion: String
-
-    internal val metaInfo: MetaInfo = MetaInfo()
-}

src/main/kotlin/app/revanced/patcher/data/PatcherData.kt

@@ -0,0 +1,18 @@
+package app.revanced.patcher.data
+
+import app.revanced.patcher.data.base.Data
+import app.revanced.patcher.data.implementation.BytecodeData
+import app.revanced.patcher.data.implementation.ResourceData
+import app.revanced.patcher.patch.base.Patch
+import org.jf.dexlib2.iface.ClassDef
+import java.io.File
+
+internal data class PatcherData(
+    val internalClasses: MutableList<ClassDef>,
+    val resourceCacheDirectory: String
+) {
+    internal val patches = mutableListOf<Patch<Data>>()
+
+    internal val bytecodeData = BytecodeData(patches, internalClasses)
+    internal val resourceData = ResourceData(File(resourceCacheDirectory))
+}

src/main/kotlin/app/revanced/patcher/data/base/Data.kt

@@ -0,0 +1,9 @@
+package app.revanced.patcher.data.base
+
+import app.revanced.patcher.data.implementation.BytecodeData
+import app.revanced.patcher.data.implementation.ResourceData
+
+/**
+ * Constraint interface for [BytecodeData] and [ResourceData]
+ */
+interface Data

src/main/kotlin/app/revanced/patcher/data/impl/BytecodeData.kt

@@ -1,69 +0,0 @@
-package app.revanced.patcher.data.impl
-
-import app.revanced.patcher.data.Data
-import app.revanced.patcher.util.ProxyBackedClassList
-import app.revanced.patcher.util.method.MethodWalker
-import org.jf.dexlib2.iface.ClassDef
-import org.jf.dexlib2.iface.Method
-
-class BytecodeData(
-    internalClasses: MutableList<ClassDef>
-) : Data {
-    val classes = ProxyBackedClassList(internalClasses)
-
-    /**
-     * Find a class by a given class name.
-     * @param className The name of the class.
-     * @return A proxy for the first class that matches the class name.
-     */
-    fun findClass(className: String) = findClass { it.type.contains(className) }
-
-    /**
-     * Find a class by a given predicate.
-     * @param predicate A predicate to match the class.
-     * @return A proxy for the first class that matches the predicate.
-     */
-    fun findClass(predicate: (ClassDef) -> Boolean) =
-        // if we already proxied the class matching the predicate...
-        classes.proxies.firstOrNull { predicate(it.immutableClass) } ?:
-        // else resolve the class to a proxy and return it, if the predicate is matching a class
-        classes.find(predicate)?.let { proxy(it) }
-
-    fun proxy(classDef: ClassDef): app.revanced.patcher.util.proxy.ClassProxy {
-        var proxy = this.classes.proxies.find { it.immutableClass.type == classDef.type }
-        if (proxy == null) {
-            proxy = app.revanced.patcher.util.proxy.ClassProxy(classDef)
-            this.classes.add(proxy)
-        }
-        return proxy
-    }
-}
-
-internal class MethodNotFoundException(s: String) : Exception(s)
-
-internal inline fun <reified T> Iterable<T>.find(predicate: (T) -> Boolean): T? {
-    for (element in this) {
-        if (predicate(element)) {
-            return element
-        }
-    }
-    return null
-}
-
-/**
- * Create a [MethodWalker] instance for the current [BytecodeData].
- * @param startMethod The method to start at.
- * @return A [MethodWalker] instance.
- */
-fun BytecodeData.toMethodWalker(startMethod: Method): MethodWalker {
-    return MethodWalker(this, startMethod)
-}
-
-internal inline fun <T> Iterable<T>.findIndexed(predicate: (T) -> Boolean): Pair<T, Int>? {
-    for ((index, element) in this.withIndex()) {
-        if (predicate(element)) {
-            return element to index
-        }
-    }
-    return null
-}

src/main/kotlin/app/revanced/patcher/data/impl/ResourceData.kt

@@ -1,84 +0,0 @@
-package app.revanced.patcher.data.impl
-
-import app.revanced.patcher.data.Data
-import org.w3c.dom.Document
-import java.io.Closeable
-import java.io.File
-import java.io.InputStream
-import java.io.OutputStream
-import javax.xml.parsers.DocumentBuilderFactory
-import javax.xml.transform.TransformerFactory
-import javax.xml.transform.dom.DOMSource
-import javax.xml.transform.stream.StreamResult
-
-class ResourceData(private val resourceCacheDirectory: File) : Data, Iterable<File> {
-    val xmlEditor = XmlFileHolder()
-
-    operator fun get(path: String) = resourceCacheDirectory.resolve(path)
-
-    override fun iterator() = resourceCacheDirectory.walkTopDown().iterator()
-
-    inner class XmlFileHolder {
-        operator fun get(inputStream: InputStream) =
-            DomFileEditor(inputStream)
-
-        operator fun get(path: String): DomFileEditor {
-            return DomFileEditor(this@ResourceData[path])
-        }
-
-    }
-}
-
-/**
- * DomFileEditor is a wrapper for a file that can be edited as a dom document.
- *
- * @param inputStream the input stream to read the xml file from.
- * @param outputStream the output stream to write the xml file to. If null, the file will not be written.
- */
-class DomFileEditor internal constructor(
-    private val inputStream: InputStream,
-    private val outputStream: Lazy<OutputStream>? = null,
-) : Closeable {
-    // path to the xml file to unlock the resource when closing the editor
-    private var filePath: String? = null
-
-    /**
-     * The document of the xml file
-     */
-    val file: Document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(inputStream)
-        .also(Document::normalize)
-
-    // lazily open an output stream
-    // this is required because when constructing a DomFileEditor the output stream is created along with the input stream, which is not allowed
-    // the workaround is to lazily create the output stream. This way it would be used after the input stream is closed, which happens in the constructor
-    constructor(file: File) : this(file.inputStream(), lazy { file.outputStream() }) {
-        filePath = file.path
-
-        // prevent sharing mutability of the same file between multiple instances of DomFileEditor
-        if (locks.contains(filePath))
-            throw IllegalStateException("Can not create a DomFileEditor for that file because it is already locked by another instance of DomFileEditor.")
-        locks.add(filePath!!)
-    }
-
-    override fun close() {
-        inputStream.close()
-
-        // if the output stream is not null, do not close it
-        outputStream?.let {
-            val result = StreamResult(it.value)
-            TransformerFactory.newInstance().newTransformer().transform(DOMSource(file), result)
-
-            it.value.close()
-        }
-
-        // remove the lock, if it exists
-        filePath?.let {
-            locks.remove(it)
-        }
-    }
-
-    private companion object {
-        // list of locked file paths
-        val locks = mutableListOf<String>()
-    }
-}

src/main/kotlin/app/revanced/patcher/data/implementation/BytecodeData.kt

@@ -0,0 +1,86 @@
+package app.revanced.patcher.data.implementation
+
+import app.revanced.patcher.data.base.Data
+import app.revanced.patcher.patch.base.Patch
+import app.revanced.patcher.patch.implementation.BytecodePatch
+import app.revanced.patcher.signature.implementation.method.resolver.SignatureResolverResult
+import app.revanced.patcher.util.ProxyBackedClassList
+import app.revanced.patcher.util.method.MethodWalker
+import org.jf.dexlib2.iface.ClassDef
+import org.jf.dexlib2.iface.Method
+
+class BytecodeData(
+    // FIXME: ugly solution due to design.
+    //  It does not make sense for a BytecodeData instance to have access to the patches
+    private val patches: List<Patch<Data>>,
+    internalClasses: MutableList<ClassDef>
+) : Data {
+    val classes = ProxyBackedClassList(internalClasses)
+
+    /**
+     * Find a class by a given class name
+     * @return A proxy for the first class that matches the class name
+     */
+    fun findClass(className: String) = findClass { it.type.contains(className) }
+
+    /**
+     * Find a class by a given predicate
+     * @return A proxy for the first class that matches the predicate
+     */
+    fun findClass(predicate: (ClassDef) -> Boolean): app.revanced.patcher.util.proxy.ClassProxy? {
+        // if we already proxied the class matching the predicate...
+        for (patch in patches) {
+            if (patch !is BytecodePatch) continue
+            for (signature in patch.signatures) {
+                val result = signature.result
+                result ?: continue
+
+                if (predicate(result.definingClassProxy.immutableClass)) return result.definingClassProxy  // ...then return that proxy
+            }
+        }
+        // else resolve the class to a proxy and return it, if the predicate is matching a class
+        return classes.find(predicate)?.let {
+            proxy(it)
+        }
+    }
+}
+
+
+class MethodMap : LinkedHashMap<String, SignatureResolverResult>() {
+    override fun get(key: String): SignatureResolverResult {
+        return super.get(key) ?: throw MethodNotFoundException("Method $key was not found in the method cache")
+    }
+}
+
+internal class MethodNotFoundException(s: String) : Exception(s)
+
+internal inline fun <reified T> Iterable<T>.find(predicate: (T) -> Boolean): T? {
+    for (element in this) {
+        if (predicate(element)) {
+            return element
+        }
+    }
+    return null
+}
+
+fun BytecodeData.toMethodWalker(startMethod: Method): MethodWalker {
+    return MethodWalker(this, startMethod)
+}
+
+internal inline fun <T> Iterable<T>.findIndexed(predicate: (T) -> Boolean): Pair<T, Int>? {
+    for ((index, element) in this.withIndex()) {
+        if (predicate(element)) {
+            return element to index
+        }
+    }
+    return null
+}
+
+fun BytecodeData.proxy(classDef: ClassDef): app.revanced.patcher.util.proxy.ClassProxy {
+    var proxy = this.classes.proxies.find { it.immutableClass.type == classDef.type }
+    if (proxy == null) {
+        proxy = app.revanced.patcher.util.proxy.ClassProxy(classDef)
+        this.classes.proxies.add(proxy)
+    }
+    return proxy
+}

src/main/kotlin/app/revanced/patcher/data/implementation/ResourceData.kt

@@ -0,0 +1,49 @@
+package app.revanced.patcher.data.implementation
+
+import app.revanced.patcher.data.base.Data
+import org.w3c.dom.Document
+import java.io.Closeable
+import java.io.File
+import javax.xml.XMLConstants
+import javax.xml.parsers.DocumentBuilderFactory
+import javax.xml.transform.TransformerFactory
+import javax.xml.transform.dom.DOMSource
+import javax.xml.transform.stream.StreamResult
+
+class ResourceData(private val resourceCacheDirectory: File) : Data {
+    private fun resolve(path: String) = resourceCacheDirectory.resolve(path)
+
+    fun forEach(action: (File) -> Unit) = resourceCacheDirectory.walkTopDown().forEach(action)
+    fun reader(path: String) = resolve(path).reader()
+    fun writer(path: String) = resolve(path).writer()
+
+    fun replace(path: String, oldValue: String, newValue: String, oldValueIsRegex: Boolean = false) {
+        // TODO: buffer this somehow
+        val content = resolve(path).readText()
+
+        if (oldValueIsRegex) {
+            content.replace(Regex(oldValue), newValue)
+            return
+        }
+    }
+
+    fun getXmlEditor(path: String) = DomFileEditor(resolve(path))
+}
+
+class DomFileEditor internal constructor(private val domFile: File) : Closeable {
+    val file: Document
+
+    init {
+        val factory = DocumentBuilderFactory.newInstance()
+        factory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true)
+
+        val builder = factory.newDocumentBuilder()
+
+        // this will expectedly throw
+        file = builder.parse(domFile)
+        file.normalize()
+    }
+
+    override fun close() = TransformerFactory.newInstance().newTransformer()
+        .transform(DOMSource(file), StreamResult(domFile.outputStream()))
+}

src/main/kotlin/app/revanced/patcher/extensions/AnnotationExtensions.kt

@@ -1,79 +0,0 @@
-package app.revanced.patcher.extensions
-
-import app.revanced.patcher.annotation.*
-import app.revanced.patcher.data.Data
-import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
-import app.revanced.patcher.patch.OptionsContainer
-import app.revanced.patcher.patch.Patch
-import app.revanced.patcher.patch.PatchOptions
-import kotlin.reflect.KClass
-import kotlin.reflect.KVisibility
-import kotlin.reflect.full.companionObject
-import kotlin.reflect.full.companionObjectInstance
-
-/**
- * Recursively find a given annotation on a class.
- * @param targetAnnotation The annotation to find.
- * @return The annotation.
- */
-private fun <T : Annotation> Class<*>.recursiveAnnotation(targetAnnotation: KClass<T>) =
-    this.findAnnotationRecursively(targetAnnotation.java, mutableSetOf())
-
-
-private fun <T : Annotation> Class<*>.findAnnotationRecursively(
-    targetAnnotation: Class<T>, traversed: MutableSet<Annotation>
-): T? {
-    val found = this.annotations.firstOrNull { it.annotationClass.java.name == targetAnnotation.name }
-
-    @Suppress("UNCHECKED_CAST") if (found != null) return found as T
-
-    for (annotation in this.annotations) {
-        if (traversed.contains(annotation)) continue
-        traversed.add(annotation)
-
-        return (annotation.annotationClass.java.findAnnotationRecursively(targetAnnotation, traversed)) ?: continue
-    }
-
-    return null
-}
-
-object PatchExtensions {
-    val Class<*>.patchName: String
-        get() = recursiveAnnotation(Name::class)?.name ?: this.javaClass.simpleName
-    val Class<out Patch<Data>>.version get() = recursiveAnnotation(Version::class)?.version
-    val Class<out Patch<Data>>.include get() = recursiveAnnotation(app.revanced.patcher.patch.annotations.Patch::class)!!.include
-    val Class<out Patch<Data>>.description get() = recursiveAnnotation(Description::class)?.description
-    val Class<out Patch<Data>>.dependencies get() = recursiveAnnotation(app.revanced.patcher.patch.annotations.DependsOn::class)?.dependencies
-    val Class<out Patch<Data>>.compatiblePackages get() = recursiveAnnotation(Compatibility::class)?.compatiblePackages
-    val Class<out Patch<Data>>.options: PatchOptions?
-        get() = kotlin.companionObject?.let { cl ->
-            if (cl.visibility != KVisibility.PUBLIC) return null
-            kotlin.companionObjectInstance?.let {
-                (it as? OptionsContainer)?.options
-            }
-        }
-    val Class<out Patch<Data>>.deprecated: Pair<String, KClass<out Patch<Data>>?>?
-        get() = recursiveAnnotation(PatchDeprecated::class)?.let {
-            it.reason to it.replacement.let { cl ->
-                if (cl == Patch::class) null else cl
-            }
-        }
-    val Class<out Patch<Data>>.sincePatcherVersion get() = recursiveAnnotation(SincePatcher::class)?.version
-
-    @JvmStatic
-    fun Class<out Patch<Data>>.dependsOn(patch: Class<out Patch<Data>>): Boolean {
-        if (this.patchName == patch.patchName) throw IllegalArgumentException("thisval and patch may not be the same")
-        return this.dependencies?.any { it.java.patchName == this@dependsOn.patchName } == true
-    }
-}
-
-object MethodFingerprintExtensions {
-    val MethodFingerprint.name: String
-        get() = javaClass.recursiveAnnotation(Name::class)?.name ?: this.javaClass.simpleName
-    val MethodFingerprint.version get() = javaClass.recursiveAnnotation(Version::class)?.version ?: "0.0.1"
-    val MethodFingerprint.description get() = javaClass.recursiveAnnotation(Description::class)?.description
-    val MethodFingerprint.compatiblePackages get() = javaClass.recursiveAnnotation(Compatibility::class)?.compatiblePackages
-    val MethodFingerprint.matchingMethod get() = javaClass.recursiveAnnotation(app.revanced.patcher.fingerprint.method.annotation.MatchingMethod::class)
-    val MethodFingerprint.fuzzyPatternScanMethod get() = javaClass.recursiveAnnotation(app.revanced.patcher.fingerprint.method.annotation.FuzzyPatternScanMethod::class)
-    val MethodFingerprint.fuzzyScanThreshold get() = fuzzyPatternScanMethod?.threshold ?: 0
-}

src/main/kotlin/app/revanced/patcher/fingerprint/Fingerprint.kt

@@ -1,9 +0,0 @@
-package app.revanced.patcher.fingerprint
-
-import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
-
-/**
- * A ReVanced fingerprint.
- * Can be a [MethodFingerprint].
- */
-interface Fingerprint

src/main/kotlin/app/revanced/patcher/fingerprint/method/impl/MethodFingerprint.kt

@@ -1,98 +0,0 @@
-package app.revanced.patcher.fingerprint.method.impl
-
-import app.revanced.patcher.data.impl.BytecodeData
-import app.revanced.patcher.data.impl.MethodNotFoundException
-import app.revanced.patcher.extensions.MethodFingerprintExtensions.name
-import app.revanced.patcher.extensions.softCompareTo
-import app.revanced.patcher.fingerprint.Fingerprint
-import app.revanced.patcher.fingerprint.method.utils.MethodFingerprintUtils
-import app.revanced.patcher.util.proxy.ClassProxy
-import org.jf.dexlib2.Opcode
-import org.jf.dexlib2.iface.ClassDef
-import org.jf.dexlib2.iface.Method
-
-/**
- * Represents the [MethodFingerprint] for a method.
- * @param returnType The return type of the method.
- * @param access The access flags of the method.
- * @param parameters The parameters of the method.
- * @param opcodes The list of opcodes of the method.
- * @param strings A list of strings which a method contains.
- * @param customFingerprint A custom condition for this fingerprint.
- * A `null` opcode is equals to an unknown opcode.
- */
-abstract class MethodFingerprint(
-    internal val returnType: String? = null,
-    internal val access: Int? = null,
-    internal val parameters: Iterable<String>? = null,
-    internal val opcodes: Iterable<Opcode?>? = null,
-    internal val strings: Iterable<String>? = null,
-    internal val customFingerprint: ((methodDef: Method) -> Boolean)? = null
-) : Fingerprint {
-    /**
-     * The result of the [MethodFingerprint] the [Method].
-     * @throws MethodNotFoundException If the resolution of the [Method] has not happened.
-     */
-    var result: MethodFingerprintResult? = null
-        get() = field ?: throw Exception("${this.name} has not been resolved yet.")
-}
-
-/**
- * Represents the result of a [MethodFingerprintUtils].
- * @param method The matching method.
- * @param classDef The [ClassDef] that contains the matching [method].
- * @param patternScanResult Opcodes pattern scan result.
- * @param data The [BytecodeData] this [MethodFingerprintResult] is attached to, to create proxies.
- */
-data class MethodFingerprintResult(
-    val method: Method,
-    val classDef: ClassDef,
-    val patternScanResult: PatternScanResult?,
-    internal val data: BytecodeData
-) {
-    /**
-     * Returns a mutable clone of [classDef]
-     *
-     * Please note, this method allocates a [ClassProxy].
-     * Use [classDef] where possible.
-     */
-    val mutableClass by lazy { data.proxy(classDef).resolve() }
-
-    /**
-     * Returns a mutable clone of [method]
-     *
-     * Please note, this method allocates a [ClassProxy].
-     * Use [method] where possible.
-     */
-    val mutableMethod by lazy {
-        mutableClass.methods.first {
-            it.softCompareTo(this.method)
-        }
-    }
-}
-
-/**
- * The result of a pattern scan.
- * @param startIndex The start index of the instructions where to which this pattern matches.
- * @param endIndex The end index of the instructions where to which this pattern matches.
- * @param warnings A list of warnings considering this [PatternScanResult].
- */
-data class PatternScanResult(
-    val startIndex: Int,
-    val endIndex: Int,
-    var warnings: List<Warning>? = null
-) {
-    /**
-     * Represents warnings of the pattern scan.
-     * @param correctOpcode The opcode the instruction list has.
-     * @param wrongOpcode The opcode the pattern list of the signature currently has.
-     * @param instructionIndex The index of the opcode relative to the instruction list.
-     * @param patternIndex The index of the opcode relative to the pattern list from the signature.
-     */
-    data class Warning(
-        val correctOpcode: Opcode,
-        val wrongOpcode: Opcode,
-        val instructionIndex: Int,
-        val patternIndex: Int,
-    )
-}