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https://github.com/bernaferrari/GradleKotlinConverter

Convert from Groovy to Kotlin DSL for Gradle, focused on Android.
https://github.com/bernaferrari/GradleKotlinConverter

gradle gradle-kotlin-dsl groovy kotlin-script

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Convert from Groovy to Kotlin DSL for Gradle, focused on Android.

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README 

        
![Image of GradleKotlinConverter](logo.png)



# Gradle Kotlin DSL Converter



A powerful tool to simplify the migration from Gradle's Groovy DSL to Kotlin DSL for Android projects.



[![Image of website](web-screenshot.png)](https://gradle-kotlin-converter.vercel.app/)



Visit https://gradle-kotlin-converter.vercel.app/ to use the converter.



## Overview



The Gradle Kotlin DSL Converter is designed to streamline the process of transitioning from Gradle's Groovy DSL to Kotlin DSL in Android Studio. This tool automates many of the repetitive tasks involved in the migration, significantly reducing the time and effort required to update your build scripts.



While it may not produce a perfect conversion in all cases, it serves as an invaluable first step in the migration process, similar to Android Studio's Java to Kotlin converter.



## Features



- Converts Groovy-style Gradle scripts to Kotlin DSL format

- Handles common syntax differences and idiomatic changes

- Supports both file-based and clipboard-based conversion

- Addresses numerous edge cases and common migration challenges



## Getting Started



### Web Interface



Visit our [web-based converter](https://gradle-kotlin-converter.vercel.app/) for an easy-to-use interface that doesn't require any local setup.



## Conversion Capabilities



The converter handles a wide range of Gradle script elements, including:



- String delimiter conversion (apostrophes to quotation marks)

- Variable declaration updates (`def` to `val`)

- Plugin application syntax

- Dependency declaration format

- Repository and Maven configurations

- SDK version and build type declarations

- ProGuard file configurations

- Kotlin-specific dependency declarations

- And more:



---



    Description

    Before

    After

    

        Replace all ' with "

        'kotlin-android'

        "kotlin-android"

    

    

        Replace "def " with "val "

        def appcompat = "1.0.0"

        val appcompat = "1.0.0"

    

    

        Convert plugins

        apply plugin: "kotlin-kapt"

        apply(plugin = "kotlin-kapt")

    

    

        Add ( ) to dependencies

        implementation ":epoxy"

        implementation(":epoxy")

    

    

        Convert Maven

        maven { url "https://jitpack.io" }

        maven("https://jitpack.io")

    

    

        Convert Sdk Version

        compileSdkVersion 28

        compileSdkVersion(28)

    

    

        Convert Version Code

        versionCode 4

        versionCode = 4

    

    

        Convert Build Types

        debuggable true

        isDebuggable = true

    

    

        Convert proguardFiles

        proguardFiles getDef..., "..."

        setProguardFiles(listOf(getDef..., "...")

    

    

        Convert sourceCompatibility

        sourceCompatibility = "1.8"

        sourceCompatibility = JavaVersion.VERSION_1_8

    

    

        Convert androidExtensions

        androidExtensions { experimental = true }

        androidExtensions { isExperimental = true }

    

    

        Convert include

        include ":app", ":diffutils"

        include(":app", ":diffutils")

    

    

        Convert signingConfigs

        signingConfigs { debug { ... } }

        signingConfigs { register("debug") { ... } }

    

    

        Convert buildTypes

        buildTypes { debug { ... } }

        buildTypes { named("debug") { ... } })

    

    

        Convert classpath.exclude

        configurations.classpath.exclude group: '...lombok'

        configurations.classpath { exclude(group = "...lombok") }

    

    

        Kt dependencies (1/3)

        "org.jetbrains.kotlin:kotlin-gradle-plugin:$kt_v"

        kotlin("gradle-plugin", version = "$kt_v")

    

    

        Kt dependencies (2/3)

        "org.jetbrains.kotlin:kotlin-stdlib:$kt_v"

        kotlin("stdlib")

    

    

        Kt dependencies (3/3)

        "org.jetbrains.kotlin:kotlin-reflect"

        kotlin("reflect")

    

    

        Convert signingConfig

        signingConfig signingConfigs.release

        signingConfig = signingConfigs.getByName("release")

    

    

        Convert extras

        ext.enableCrashlytics = false

        extra.set("enableCrashlytics", false)

    

    

        Convert plugins

        apply(...) apply(...)

        plugins { id(...) id(...) }

    

    

        Convert plugin ids

        id "io.gitlab.arturbosch.detekt" version "1.0"

        id("io.gitlab.arturbosch.detekt") version "1.0"

    

    

        Convert ":" to " ="

        testImpl(name: "junit", version: "4.12")

        testImpl(name = "junit", version = "4.12")

    



You can find all the details on the source code.



The script was made to convert `build.gradle` in `build.gradle.kts`, but it can also help in the migration if you paste something that is not in Kotlin DSL format

and you want it converted. If you paste something like a `implementation '...'` and want it converted to `implementation("...")`, you are free to call the script on `build.gradle.kts` file and see it working as expected.



When applying on `build.gradle`, the script will create, for example, `build.gradle.kts`.

When applying on a file that already ends in `.kts`, the script will overrite the file.

In that case, please make sure you are using git or have a backup, in case things turn out wrong.



## Things it still can't do



- If you find anything, just tell me.



## Issue Tracking



Found a bug? Have an idea for an improvement? Feel free to [add an issue](../../issues).



## License



Copyright 2018 Bernardo Ferrari.



Licensed to the Apache Software Foundation (ASF) under one or more contributor

license agreements. See the NOTICE file distributed with this work for

additional information regarding copyright ownership. The ASF licenses this

file to you under the Apache License, Version 2.0 (the "License"); you may not

use this file except in compliance with the License. You may obtain a copy of

the License at



http://www.apache.org/licenses/LICENSE-2.0



Unless required by applicable law or agreed to in writing, software

distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

License for the specific language governing permissions and limitations under

the License.