chore(release): 3.3.1 [skip ci]

## [3.3.1](https://github.com/revanced/revanced-patcher/compare/v3.3.0...v3.3.1) (2022-08-03)

### Bug Fixes

* revert soft dependencies ([7b2d058](7b2d058144))

.github/ISSUE_TEMPLATE/bug-issue.yml

@@ -51,10 +51,10 @@ body:
       label: Solution
       description: If applicable, add a possible solution.
     validations:
-      required: true
+      required: false
   - type: textarea
     attributes:
       label: Additional context
       description: Add additional context here.
     validations:
-      required: false
+      required: false

CHANGELOG.md

@@ -1,3 +1,74 @@
+## [3.3.1](https://github.com/revanced/revanced-patcher/compare/v3.3.0...v3.3.1) (2022-08-03)
+
+
+### Bug Fixes
+
+* revert soft dependencies ([7b2d058](https://github.com/revanced/revanced-patcher/commit/7b2d058144b0718992d329731e2af7cc704e4370))
+
+# [3.3.0](https://github.com/revanced/revanced-patcher/compare/v3.2.1...v3.3.0) (2022-08-02)
+
+
+### Features
+
+* add getValue & setValue for PatchOption ([2572cd0](https://github.com/revanced/revanced-patcher/commit/2572cd04b5da4eeae738c8dde31493177edf0bf8))
+
+## [3.2.1](https://github.com/revanced/revanced-patcher/compare/v3.2.0...v3.2.1) (2022-08-02)
+
+
+### Bug Fixes
+
+* check if patch option requirement is met ([14a73bf](https://github.com/revanced/revanced-patcher/commit/14a73bfcafac36bce2b8466788d460edde7a14fd))
+
+# [3.2.0](https://github.com/revanced/revanced-patcher/compare/v3.1.0...v3.2.0) (2022-08-02)
+
+
+### Features
+
+* PatchOptions#nullify to nullify an option ([371f0c4](https://github.com/revanced/revanced-patcher/commit/371f0c4d0bf96e7f6db35085efccaed3000a096c))
+
+# [3.1.0](https://github.com/revanced/revanced-patcher/compare/v3.0.0...v3.1.0) (2022-08-02)
+
+
+### Features
+
+* validator for patch options ([4e2e772](https://github.com/revanced/revanced-patcher/commit/4e2e77238957d7732326cfe5e05145bf7dab5bfb))
+
+# [3.0.0](https://github.com/revanced/revanced-patcher/compare/v2.9.0...v3.0.0) (2022-08-02)
+
+
+### Features
+
+* registry for patch options ([2431785](https://github.com/revanced/revanced-patcher/commit/2431785d0e494d6271c6951eec9adfff9db95c17))
+
+
+### BREAKING CHANGES
+
+* Patch options now use the PatchOptions registry class instead of an Iterable. This change requires modifications to existing patches using this API.
+
+# [2.9.0](https://github.com/revanced/revanced-patcher/compare/v2.8.0...v2.9.0) (2022-08-02)
+
+
+### Bug Fixes
+
+* show error message instead of `null` ([8d95b14](https://github.com/revanced/revanced-patcher/commit/8d95b14f350b47ec029f35e776f6e627aaf5f607))
+
+
+### Features
+
+* exclusive mutable access to files ([814ce0b](https://github.com/revanced/revanced-patcher/commit/814ce0b9ae29725417c86b7d11b40d025724a426))
+
+# [2.8.0](https://github.com/revanced/revanced-patcher/compare/v2.7.0...v2.8.0) (2022-08-01)
+
+
+### Bug Fixes
+
+* remove requirement for solution [skip ci] ([#80](https://github.com/revanced/revanced-patcher/issues/80)) ([9a4d30e](https://github.com/revanced/revanced-patcher/commit/9a4d30e15234ef62844f035c58a1143674d4c12e))
+
+
+### Features
+
+* patch options ([#81](https://github.com/revanced/revanced-patcher/issues/81)) ([fbb09f3](https://github.com/revanced/revanced-patcher/commit/fbb09f38dce49adc7f63b71bdf2df2ef0b84db04))
+
 # [2.7.0](https://github.com/revanced/revanced-patcher/compare/v2.6.0...v2.7.0) (2022-08-01)
 
 

gradle.properties

@@ -1,2 +1,2 @@
 kotlin.code.style = official
-version = 2.7.0
+version = 3.3.1

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

@@ -11,7 +11,6 @@ import app.revanced.patcher.patch.Patch
 import app.revanced.patcher.patch.PatchResult
 import app.revanced.patcher.patch.PatchResultError
 import app.revanced.patcher.patch.PatchResultSuccess
-import app.revanced.patcher.patch.annotations.DependencyType
 import app.revanced.patcher.patch.impl.BytecodePatch
 import app.revanced.patcher.patch.impl.ResourcePatch
 import app.revanced.patcher.util.ListBackedSet
@@ -263,19 +262,15 @@ class Patcher(private val options: PatcherOptions) {
         }
 
         // recursively apply all dependency patches
-        patch.dependencies.forEach {
-            val dependency = it.patch.java
-            if ( // soft dependencies must be included manually.
-                it.type == DependencyType.SOFT && !data.patches.any { p ->
-                    p.patchName == dependency.patchName
-                }
-            ) return@forEach
+        patch.dependencies?.forEach {
+            val patchDependency = it.java
+
+            val result = applyPatch(patchDependency, appliedPatches)
 
-            val result = applyPatch(dependency, appliedPatches)
             if (result.isSuccess()) return@forEach
 
             val errorMessage = result.error()!!.cause
-            return PatchResultError("'$patchName' depends on '${dependency.patchName}' but the following error was raised: $errorMessage")
+            return PatchResultError("'$patchName' depends on '${patchDependency.patchName}' but the following error was raised: $errorMessage")
         }
 
         val patchInstance = patch.getDeclaredConstructor().newInstance()

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

@@ -19,31 +19,66 @@ class ResourceData(private val resourceCacheDirectory: File) : Data, Iterable<Fi
     override fun iterator() = resourceCacheDirectory.walkTopDown().iterator()
 
     inner class XmlFileHolder {
-        operator fun get(inputStream: InputStream, outputStream: OutputStream) =
-            DomFileEditor(inputStream, lazyOf(outputStream))
+        operator fun get(inputStream: InputStream) =
+            DomFileEditor(inputStream)
+
+        operator fun get(path: String): DomFileEditor {
+            return DomFileEditor(this@ResourceData[path])
+        }
 
-        operator fun get(path: String) = 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>,
+    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() })
+    constructor(file: File) : this(file.inputStream(), lazy { file.outputStream() }) {
+        filePath = file.path
 
-    override fun close() {
-        val result = StreamResult(outputStream.value)
-        TransformerFactory.newInstance().newTransformer().transform(DOMSource(file), result)
-
-        inputStream.close()
-        outputStream.value.close()
+        // 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/extensions/AnnotationExtensions.kt

@@ -7,9 +7,6 @@ import app.revanced.patcher.annotation.Version
 import app.revanced.patcher.data.Data
 import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
 import app.revanced.patcher.patch.Patch
-import app.revanced.patcher.patch.annotations.Dependencies
-import app.revanced.patcher.patch.annotations.DependencyType
-import app.revanced.patcher.patch.annotations.DependsOn
 import kotlin.reflect.KClass
 
 /**
@@ -38,26 +35,20 @@ private fun <T : Annotation> Class<*>.findAnnotationRecursively(
     return null
 }
 
-private typealias PatchClass = Class<out Patch<Data>>
-
 object PatchExtensions {
-    val PatchClass.patchName: String get() = recursiveAnnotation(Name::class)?.name ?: this.javaClass.simpleName
-    val PatchClass.version get() = recursiveAnnotation(Version::class)?.version
-    val PatchClass.include get() = recursiveAnnotation(app.revanced.patcher.patch.annotations.Patch::class)!!.include
-    val PatchClass.description get() = recursiveAnnotation(Description::class)?.description
-    val PatchClass.dependencies get() = buildList {
-        recursiveAnnotation(DependsOn::class)?.let { add(PatchDependency(it.value, it.type)) }
-        recursiveAnnotation(Dependencies::class)?.dependencies?.forEach { add(PatchDependency(it, DependencyType.HARD)) }
-    }.toTypedArray()
-    val PatchClass.compatiblePackages get() = recursiveAnnotation(Compatibility::class)?.compatiblePackages
+    val Class<out Patch<Data>>.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
 
     @JvmStatic
-    fun PatchClass.dependsOn(patch: PatchClass): Boolean {
+    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.patch.java.patchName == this@dependsOn.patchName }
+        return this.dependencies?.any { it.java.patchName == this@dependsOn.patchName } == true
     }
-
-    class PatchDependency internal constructor(val patch: KClass<out Patch<Data>>, val type: DependencyType = DependencyType.HARD)
 }
 
 object MethodFingerprintExtensions {

src/main/kotlin/app/revanced/patcher/patch/Patch.kt

@@ -17,4 +17,9 @@ abstract class Patch<out T : Data> {
      * The main function of the [Patch] which the patcher will call.
      */
     abstract fun execute(data: @UnsafeVariance T): PatchResult
+
+    /**
+     * A list of [PatchOption]s.
+     */
+    open val options = PatchOptions()
 }

src/main/kotlin/app/revanced/patcher/patch/PatchOption.kt

@@ -0,0 +1,192 @@
+@file:Suppress("CanBeParameter", "MemberVisibilityCanBePrivate", "UNCHECKED_CAST")
+
+package app.revanced.patcher.patch
+
+import kotlin.reflect.KProperty
+
+class NoSuchOptionException(val option: String) : Exception("No such option: $option")
+class IllegalValueException(val value: Any?) : Exception("Illegal value: $value")
+class InvalidTypeException(val got: String, val expected: String) :
+    Exception("Invalid option value type: $got, expected $expected")
+
+class RequirementNotMetException : Exception("null was passed into an option that requires a value")
+
+/**
+ * A registry for an array of [PatchOption]s.
+ * @param options An array of [PatchOption]s.
+ */
+class PatchOptions(vararg val options: PatchOption<*>) : Iterable<PatchOption<*>> {
+    private val register = buildMap {
+        for (option in options) {
+            if (containsKey(option.key)) {
+                throw IllegalStateException("Multiple options found with the same key")
+            }
+            put(option.key, option)
+        }
+    }
+
+    /**
+     * Get a [PatchOption] by its key.
+     * @param key The key of the [PatchOption].
+     */
+    operator fun get(key: String) = register[key] ?: throw NoSuchOptionException(key)
+
+    /**
+     * Set the value of a [PatchOption].
+     * @param key The key of the [PatchOption].
+     * @param value The value you want it to be.
+     * Please note that using the wrong value type results in a runtime error.
+     */
+    inline operator fun <reified T> set(key: String, value: T) {
+        @Suppress("UNCHECKED_CAST") val opt = get(key) as PatchOption<T>
+        if (opt.value !is T) throw InvalidTypeException(
+            T::class.java.canonicalName,
+            opt.value?.let { it::class.java.canonicalName } ?: "null"
+        )
+        opt.value = value
+    }
+
+    /**
+     * Sets the value of a [PatchOption] to `null`.
+     * @param key The key of the [PatchOption].
+     */
+    fun nullify(key: String) {
+        get(key).value = null
+    }
+
+    override fun iterator() = options.iterator()
+}
+
+/**
+ * A [Patch] option.
+ * @param key Unique identifier of the option. Example: _`settings.microg.enabled`_
+ * @param default The default value of the option.
+ * @param title A human-readable title of the option. Example: _MicroG Settings_
+ * @param description A human-readable description of the option. Example: _Settings integration for MicroG._
+ * @param required Whether the option is required.
+ */
+@Suppress("MemberVisibilityCanBePrivate")
+sealed class PatchOption<T>(
+    val key: String,
+    default: T?,
+    val title: String,
+    val description: String,
+    val required: Boolean,
+    val validator: (T?) -> Boolean
+) {
+    var value: T? = default
+        set(value) {
+            if (value == null && required) {
+                throw RequirementNotMetException()
+            }
+            if (!validator(value)) {
+                throw IllegalValueException(value)
+            }
+            field = value
+        }
+
+    /**
+     * Gets the value of the option.
+     * Please note that using the wrong value type results in a runtime error.
+     */
+    operator fun <T> getValue(thisRef: Nothing?, property: KProperty<*>) = value as T
+
+    /**
+     * Gets the value of the option.
+     * Please note that using the wrong value type results in a runtime error.
+     */
+    inline operator fun <reified V> setValue(thisRef: Any?, property: KProperty<*>, new: V) {
+        if (value !is V) throw InvalidTypeException(
+            V::class.java.canonicalName,
+            value?.let { it::class.java.canonicalName } ?: "null"
+        )
+        value = new as T
+    }
+
+    /**
+     * A [PatchOption] representing a [String].
+     * @see PatchOption
+     */
+    class StringOption(
+        key: String,
+        default: String?,
+        title: String,
+        description: String,
+        required: Boolean = false,
+        validator: (String?) -> Boolean = { true }
+    ) : PatchOption<String>(
+        key, default, title, description, required, validator
+    )
+
+    /**
+     * A [PatchOption] representing a [Boolean].
+     * @see PatchOption
+     */
+    class BooleanOption(
+        key: String,
+        default: Boolean?,
+        title: String,
+        description: String,
+        required: Boolean = false,
+        validator: (Boolean?) -> Boolean = { true }
+    ) : PatchOption<Boolean>(
+        key, default, title, description, required, validator
+    )
+
+    /**
+     * A [PatchOption] with a list of allowed options.
+     * @param options A list of allowed options for the [ListOption].
+     * @see PatchOption
+     */
+    sealed class ListOption<E>(
+        key: String,
+        default: E?,
+        val options: Iterable<E>,
+        title: String,
+        description: String,
+        required: Boolean = false,
+        validator: (E?) -> Boolean = { true }
+    ) : PatchOption<E>(
+        key, default, title, description, required, {
+            (it?.let { it in options } ?: true) && validator(it)
+        }
+    ) {
+        init {
+            if (default !in options) {
+                throw IllegalStateException("Default option must be an allowed options")
+            }
+        }
+    }
+
+    /**
+     * A [ListOption] of type [String].
+     * @see ListOption
+     */
+    class StringListOption(
+        key: String,
+        default: String?,
+        options: Iterable<String>,
+        title: String,
+        description: String,
+        required: Boolean = false,
+        validator: (String?) -> Boolean = { true }
+    ) : ListOption<String>(
+        key, default, options, title, description, required, validator
+    )
+
+    /**
+     * A [ListOption] of type [Int].
+     * @see ListOption
+     */
+    class IntListOption(
+        key: String,
+        default: Int?,
+        options: Iterable<Int>,
+        title: String,
+        description: String,
+        required: Boolean = false,
+        validator: (Int?) -> Boolean = { true }
+    ) : ListOption<Int>(
+        key, default, options, title, description, required, validator
+    )
+}

src/main/kotlin/app/revanced/patcher/patch/annotations/PatchAnnotation.kt

@@ -19,35 +19,6 @@ annotation class Patch(val include: Boolean = true)
 @Target(AnnotationTarget.CLASS)
 @Retention(AnnotationRetention.RUNTIME)
 @MustBeDocumented
-@Deprecated(
-    "Does not support new parameter 'type'",
-    ReplaceWith("DependsOn")
-)
-annotation class Dependencies(
-    val dependencies: Array<KClass<out Patch<Data>>> = []
-)
-
-/**
- * Annotation for dependencies of [Patch]es .
- */
-@Target(AnnotationTarget.CLASS)
-@Retention(AnnotationRetention.RUNTIME)
-@MustBeDocumented
-@Repeatable
 annotation class DependsOn(
-    val value: KClass<out Patch<Data>>,
-    val type: DependencyType = DependencyType.HARD
-)
-
-enum class DependencyType {
-    /**
-     * Enforces that the dependency is applied, even if it was not selected.
-     */
-    HARD,
-
-    /**
-     * Applies the dependency only if it was selected.
-     */
-    @Deprecated("Will be removed when Patch Options is implemented.")
-    SOFT
-}
+    val dependencies: Array<KClass<out Patch<Data>>> = []
+)

src/test/kotlin/app/revanced/patcher/patch/PatchOptionsTest.kt

@@ -0,0 +1,85 @@
+package app.revanced.patcher.patch
+
+import app.revanced.patcher.usage.bytecode.ExampleBytecodePatch
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
+import kotlin.test.assertNotEquals
+
+internal class PatchOptionsTest {
+    private val options = ExampleBytecodePatch().options
+
+    @Test
+    fun `should not throw an exception`() {
+        for (option in options) {
+            when (option) {
+                is PatchOption.StringOption -> {
+                    option.value = "Hello World"
+                }
+                is PatchOption.BooleanOption -> {
+                    option.value = false
+                }
+                is PatchOption.StringListOption -> {
+                    option.value = option.options.first()
+                    for (choice in option.options) {
+                        println(choice)
+                    }
+                }
+                is PatchOption.IntListOption -> {
+                    option.value = option.options.first()
+                    for (choice in option.options) {
+                        println(choice)
+                    }
+                }
+            }
+        }
+        val option = options["key1"]
+        println(option.value)
+        options["key1"] = "Hello, world!"
+        println(option.value)
+    }
+
+    @Test
+    fun `should return a different value when changed`() {
+        var value: String by options["key1"]
+        val current = value + "" // force a copy
+        value = "Hello, world!"
+        assertNotEquals(current, value)
+    }
+
+    @Test
+    fun `should be able to set value to null`() {
+        // Sadly, doing:
+        // > options["key2"] = null
+        // is not possible because Kotlin
+        // cannot reify the type "Nothing?".
+        options.nullify("key2")
+    }
+
+    @Test
+    fun `should fail because the option does not exist`() {
+        assertThrows<NoSuchOptionException> {
+            options["this option does not exist"] = 123
+        }
+    }
+
+    @Test
+    fun `should fail because of invalid value type`() {
+        assertThrows<InvalidTypeException> {
+            options["key1"] = 123
+        }
+    }
+
+    @Test
+    fun `should fail because of an illegal value`() {
+        assertThrows<IllegalValueException> {
+            options["key3"] = "this value is not an allowed option"
+        }
+    }
+
+    @Test
+    fun `should fail because of the requirement is not met`() {
+        assertThrows<RequirementNotMetException> {
+            options.nullify("key1")
+        }
+    }
+}

src/test/kotlin/app/revanced/patcher/usage/bytecode/ExampleBytecodePatch.kt

@@ -7,9 +7,10 @@ import app.revanced.patcher.data.impl.BytecodeData
 import app.revanced.patcher.extensions.addInstructions
 import app.revanced.patcher.extensions.or
 import app.revanced.patcher.extensions.replaceInstruction
+import app.revanced.patcher.patch.PatchOption
+import app.revanced.patcher.patch.PatchOptions
 import app.revanced.patcher.patch.PatchResult
 import app.revanced.patcher.patch.PatchResultSuccess
-import app.revanced.patcher.patch.annotations.DependencyType
 import app.revanced.patcher.patch.annotations.DependsOn
 import app.revanced.patcher.patch.annotations.Patch
 import app.revanced.patcher.patch.impl.BytecodePatch
@@ -37,7 +38,7 @@ import org.jf.dexlib2.util.Preconditions
 @Description("Example demonstration of a bytecode patch.")
 @ExampleResourceCompatibility
 @Version("0.0.1")
-@DependsOn(ExampleBytecodePatch::class, DependencyType.SOFT)
+@DependsOn([ExampleBytecodePatch::class])
 class ExampleBytecodePatch : BytecodePatch(listOf(ExampleFingerprint)) {
     // This function will be executed by the patcher.
     // You can treat it as a constructor
@@ -162,4 +163,19 @@ class ExampleBytecodePatch : BytecodePatch(listOf(ExampleFingerprint)) {
             )
         )
     }
+
+    override val options = PatchOptions(
+        PatchOption.StringOption(
+            "key1", "default", "title", "description", true
+        ),
+        PatchOption.BooleanOption(
+            "key2", true, "title", "description" // required defaults to false
+        ),
+        PatchOption.StringListOption(
+            "key3", "TEST", listOf("TEST", "TEST1", "TEST2"), "title", "description"
+        ),
+        PatchOption.IntListOption(
+            "key4", 1, listOf(1, 2, 3), "title", "description"
+        ),
+    )
 }