feat: ktlint editorConfigOverrides for plugin-maven (#1335 implements #1334)

Author: nedtwigg

plugin-maven/CHANGES.md

@@ -3,6 +3,8 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+### Added
+* Support for `editorConfigOverride` in `ktlint`, `plugin-maven`. ([#1335](https://github.com/diffplug/spotless/pull/1335) fixes [#1334](https://github.com/diffplug/spotless/issues/1334))
 
 ## [2.26.0] - 2022-09-14
 ### Added

plugin-maven/README.md

@@ -359,6 +359,10 @@ Groovy-Eclipse formatting errors/warnings lead per default to a build failure. T
 ```xml
 <ktlint>
   <version>0.43.2</version> <!-- optional -->
+  <editorConfigOverride> <!-- optional -->
+    <ij_kotlin_allow_trailing_comma>true</ij_kotlin_allow_trailing_comma>
+    <ij_kotlin_allow_trailing_comma_on_call_site>true</ij_kotlin_allow_trailing_comma_on_call_site>
+  </editorConfigOverride>
 </ktlint>
 ```
 

plugin-maven/src/main/java/com/diffplug/spotless/maven/kotlin/Ktlint.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 DiffPlug
+ * Copyright 2016-2022 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,6 +15,10 @@
  */
 package com.diffplug.spotless.maven.kotlin;
 
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
 import org.apache.maven.plugins.annotations.Parameter;
 
 import com.diffplug.spotless.FormatterStep;
@@ -27,9 +31,17 @@ public class Ktlint implements FormatterStepFactory {
 	@Parameter
 	private String version;
 
+	@Parameter
+	private Map<String, Object> editorConfigOverride;
+
 	@Override
 	public FormatterStep newFormatterStep(FormatterStepConfig config) {
 		String ktlintVersion = version != null ? version : KtLintStep.defaultVersion();
-		return KtLintStep.create(ktlintVersion, config.getProvisioner());
+
+		if (editorConfigOverride == null) {
+			editorConfigOverride = new HashMap<>();
+		}
+
+		return KtLintStep.create(ktlintVersion, config.getProvisioner(), false, Collections.emptyMap(), editorConfigOverride);
 	}
 }

plugin-maven/src/test/java/com/diffplug/spotless/maven/kotlin/KtlintTest.java

@@ -29,4 +29,14 @@ void testKtlint() throws Exception {
 		mavenRunner().withArguments("spotless:apply").runNoError();
 		assertFile(path).sameAsResource("kotlin/ktlint/basic.clean");
 	}
+
+	@Test
+	void testKtlintEditorConfigOverride() throws Exception {
+		writePomWithKotlinSteps("<ktlint><editorConfigOverride><ij_kotlin_allow_trailing_comma>true</ij_kotlin_allow_trailing_comma><ij_kotlin_allow_trailing_comma_on_call_site>true</ij_kotlin_allow_trailing_comma_on_call_site></editorConfigOverride></ktlint>");
+
+		String path = "src/main/kotlin/Main.kt";
+		setFile(path).toResource("kotlin/ktlint/experimentalEditorConfigOverride.dirty");
+		mavenRunner().withArguments("spotless:apply").runNoError();
+		assertFile(path).sameAsResource("kotlin/ktlint/experimentalEditorConfigOverride.clean");
+	}
 }