Support KtLint 0.34+

CHANGES.md

@@ -7,6 +7,8 @@ You might be looking for:
 
 ### Version 1.25.0-SNAPSHOT - TBD (javadoc [lib](https://diffplug.github.io/spotless/javadoc/spotless-lib/snapshot/) [lib-extra](https://diffplug.github.io/spotless/javadoc/spotless-lib-extra/snapshot/), [snapshot repo](https://oss.sonatype.org/content/repositories/snapshots/com/diffplug/spotless/))
 
+* Add support for ktlint `0.34+`, and bump default version from `0.32.0` to `0.34.2`. ([#469](https://github.com/diffplug/spotless/pull/469))
+
 ### Version 1.24.3 - September 23rd 2019 (javadoc [lib](https://diffplug.github.io/spotless/javadoc/spotless-lib/1.24.3/) [lib-extra](https://diffplug.github.io/spotless/javadoc/spotless-lib-extra/1.24.3/), artifact [lib]([jcenter](https://bintray.com/diffplug/opensource/spotless-lib), [lib-extra]([jcenter](https://bintray.com/diffplug/opensource/spotless-lib-extra)))
 
 * Update jgit from `5.3.2.201906051522-r` to `5.5.0.201909110433-r`. ([#445](https://github.com/diffplug/spotless/pull/445))
@@ -200,7 +202,7 @@ You might be looking for:
 ### Version 1.1.0 - February 27th 2017 (javadoc [lib](https://diffplug.github.io/spotless/javadoc/spotless-lib/1.1.0/) [lib-extra](https://diffplug.github.io/spotless/javadoc/spotless-lib-extra/1.1.0/), artifact [lib]([jcenter](https://bintray.com/diffplug/opensource/spotless-lib), [lib-extra]([jcenter](https://bintray.com/diffplug/opensource/spotless-lib-extra)))
 
 * Added support for Scala via [scalafmt](https://github.com/olafurpg/scalafmt).
-* Added support for Kotlin via [ktlint](https://github.com/shyiko/ktlint).
+* Added support for Kotlin via [ktlint](https://github.com/pinterest/ktlint).
 * Better error messages for JarState.
 * Improved test harnessing.
 * Formatter now has pluggable exception policies,

README.md

@@ -108,7 +108,7 @@ Once someone has filled in one square of the formatter/build system matrix, it's
 - Thanks to [Oliver Horn](https://github.com/ohorn) for adding AOSP support for Spotless' google-java-format integration.
 - Formatting by Eclipse
   - Special thanks to [Mateusz Matela](https://waynebeaton.wordpress.com/2015/03/15/great-fixes-for-mars-winners-part-i/) for huge improvements to the eclipse code formatter!
-- Thanks to [Zac Sweers](https://github.com/ZacSweers) for multiple build updates and fixing a gradle deprecation warning ([#434](https://github.com/diffplug/spotless/pull/434) and others).
+- Thanks to [Zac Sweers](https://github.com/ZacSweers) for fixing the highly requested ktlint 0.34+ support ([#469](https://github.com/diffplug/spotless/pull/469)), multiple build updates and fixing a gradle deprecation warning ([#434](https://github.com/diffplug/spotless/pull/434) and others).
 - Thanks to [Nelson Osacky](https://github.com/runningcode) for android doc improvements, versions bump, and a build improvement.
 - Thanks to [Stanley Shyiko](https://github.com/shyiko) for his help integrating [ktlint](https://github.com/shyiko/ktlint).
 - Thanks to [Jonathan Leitschuh](https://github.com/JLLeitschuh) for adding [ktlint](https://github.com/shyiko/ktlint) support for [Gradle Kotlin DSL](https://github.com/gradle/kotlin-dsl) files.

lib/src/main/java/com/diffplug/spotless/kotlin/KtLintStep.java

@@ -17,6 +17,7 @@
 
 import java.io.IOException;
 import java.io.Serializable;
+import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
@@ -33,13 +34,13 @@
 import com.diffplug.spotless.Provisioner;
 import com.diffplug.spotless.ThrowingEx;
 
-/** Wraps up [ktlint](https://github.com/shyiko/ktlint) as a FormatterStep. */
+/** Wraps up [ktlint](https://github.com/pinterest/ktlint) as a FormatterStep. */
 public class KtLintStep {
 	// prevent direct instantiation
 	private KtLintStep() {}
 
-	private static final Pattern VERSION_PRE_0_32 = Pattern.compile("0\\.(\\d+)\\.\\d+");
-	private static final String DEFAULT_VERSION = "0.32.0";
+	private static final Pattern VERSION_MATCHER = Pattern.compile("0\\.(\\d+)\\.\\d+");
+	private static final String DEFAULT_VERSION = "0.34.2";
 	static final String NAME = "ktlint";
 	static final String PACKAGE_PRE_0_32 = "com.github.shyiko";
 	static final String PACKAGE = "com.pinterest";
@@ -87,18 +88,21 @@ static final class State implements Serializable {
 		/** The jar that contains the eclipse formatter. */
 		final JarState jarState;
 		private final TreeMap<String, String> userData;
+		private final boolean useParams;
 
 		State(String version, Provisioner provisioner, boolean isScript, Map<String, String> userData) throws IOException {
 			this.userData = new TreeMap<>(userData);
 			String coordinate;
-			Matcher matcher = VERSION_PRE_0_32.matcher(version);
-			if (matcher.matches() && Integer.parseInt(matcher.group(1)) < 32) {
+			Matcher matcher = VERSION_MATCHER.matcher(version);
+			boolean matches = matcher.matches();
+			if (matches && Integer.parseInt(matcher.group(1)) < 32) {
 				coordinate = MAVEN_COORDINATE_PRE_0_32;
 				this.pkg = PACKAGE_PRE_0_32;
 			} else {
 				coordinate = MAVEN_COORDINATE;
 				this.pkg = PACKAGE;
 			}
+			this.useParams = matches && Integer.parseInt(matcher.group(1)) >= 34;
 			this.jarState = JarState.from(coordinate + version, provisioner);
 			this.isScript = isScript;
 		}
@@ -135,18 +139,56 @@ FormatterFunc createFormat() throws Exception {
 			// grab the KtLint singleton
 			Class<?> ktlintClass = classLoader.loadClass(pkg + ".ktlint.core.KtLint");
 			Object ktlint = ktlintClass.getDeclaredField("INSTANCE").get(null);
-			// and its format method
-			String formatterMethodName = isScript ? "formatScript" : "format";
-			Method formatterMethod = ktlintClass.getMethod(formatterMethodName, String.class, Iterable.class, Map.class, function2Interface);
-
-			return input -> {
-				try {
-					String formatted = (String) formatterMethod.invoke(ktlint, input, ruleSets, userData, formatterCallback);
-					return formatted;
-				} catch (InvocationTargetException e) {
-					throw ThrowingEx.unwrapCause(e);
-				}
-			};
+			FormatterFunc formatterFunc;
+			if (useParams) {
+				//
+				// In KtLint 0.34+ there is a new "format(params: Params)" function. We create an
+				// instance of the Params class with our configuration and invoke it here.
+				//
+
+				// grab the Params class
+				Class<?> paramsClass = classLoader.loadClass(pkg + ".ktlint.core.KtLint$Params");
+				// and its constructor
+				Constructor<?> constructor = paramsClass.getConstructor(
+						/* fileName, nullable */ String.class,
+						/* text */ String.class,
+						/* ruleSets */ Iterable.class,
+						/* userData */ Map.class,
+						/* callback */ function2Interface,
+						/* script */ boolean.class,
+						/* editorConfigPath, nullable */ String.class,
+						/* debug */ boolean.class);
+				Method formatterMethod = ktlintClass.getMethod("format", paramsClass);
+				formatterFunc = input -> {
+					try {
+						Object params = constructor.newInstance(
+								/* fileName, nullable */ null,
+								/* text */ input,
+								/* ruleSets */ ruleSets,
+								/* userData */ userData,
+								/* callback */ formatterCallback,
+								/* script */ isScript,
+								/* editorConfigPath, nullable */ null,
+								/* debug */ false);
+						return (String) formatterMethod.invoke(ktlint, params);
+					} catch (InvocationTargetException e) {
+						throw ThrowingEx.unwrapCause(e);
+					}
+				};
+			} else {
+				// and its format method
+				String formatterMethodName = isScript ? "formatScript" : "format";
+				Method formatterMethod = ktlintClass.getMethod(formatterMethodName, String.class, Iterable.class, Map.class, function2Interface);
+				formatterFunc = input -> {
+					try {
+						return (String) formatterMethod.invoke(ktlint, input, ruleSets, userData, formatterCallback);
+					} catch (InvocationTargetException e) {
+						throw ThrowingEx.unwrapCause(e);
+					}
+				};
+			}
+
+			return formatterFunc;
 		}
 	}
 }

plugin-gradle/CHANGES.md

@@ -4,6 +4,7 @@
 
 * Spotless no longer breaks configuration avoidance for other tasks (specifically the `check` task and all of its dependees) ([#463](https://github.com/diffplug/spotless/pull/463)).
   * Important change: **Formerly, Spotless did not create its tasks until the `afterEvaluate` phase.  Spotless now creates them as soon as the plugin is applied**, and it creates the format-specific tasks as soon as the formats are defined.  There is no performance degradation associated with this change, and it makes configuring Spotless easier.
+* Add support for ktlint `0.34+`, and bump default version from `0.32.0` to `0.34.2`. ([#469](https://github.com/diffplug/spotless/pull/469))
 
 ### Version 3.24.3 - September 23rd 2019 ([javadoc](https://diffplug.github.io/spotless/javadoc/spotless-plugin-gradle/3.24.3/), [jcenter](https://bintray.com/diffplug/opensource/spotless-plugin-gradle/3.24.3))
 
@@ -218,7 +219,7 @@
 ### Version 3.1.0 - February 27th 2017 ([javadoc](https://diffplug.github.io/spotless/javadoc/spotless-plugin-gradle/3.1.0/), [jcenter](https://bintray.com/diffplug/opensource/spotless-plugin-gradle/3.1.0))
 
 * Added support for Scala via [scalafmt](https://github.com/olafurpg/scalafmt).
-* Added support for Kotlin via [ktlint](https://github.com/shyiko/ktlint).
+* Added support for Kotlin via [ktlint](https://github.com/pinterest/ktlint).
 * Added `FormatExtension::replaceStep`.
 * `paddedCell()` is no longer required if a misbehaving rule converges.
 * Any errors in a step will now fail the build - previously they were only warned.

plugin-gradle/README.md

@@ -83,7 +83,7 @@ Spotless can check and apply formatting to any plain-text file, using simple rul
 * Google's [google-java-format](https://github.com/google/google-java-format)
 * [Groovy Eclipse](#groovy-eclipse)'s groovy code formatter
 * [FreshMark](https://github.com/diffplug/freshmark) (markdown with variables)
-* [ktlint](https://github.com/shyiko/ktlint)
+* [ktlint](https://github.com/pinterest/ktlint)
 * [scalafmt](https://github.com/olafurpg/scalafmt)
 * [DBeaver sql format](https://dbeaver.jkiss.org/)
 * [Prettier: An opinionated code formatter](https://prettier.io)
@@ -252,7 +252,7 @@ spotless {
 
 <a name="ktlint"></a>
 
-## Applying [ktlint](https://github.com/shyiko/ktlint) to Kotlin files
+## Applying [ktlint](https://github.com/pinterest/ktlint) to Kotlin files
 
 ```gradle
 spotless {

plugin-gradle/src/main/java/com/diffplug/gradle/spotless/KotlinExtension.java

@@ -46,7 +46,7 @@ public LicenseHeaderConfig licenseHeaderFile(Object licenseHeaderFile) {
 		return licenseHeaderFile(licenseHeaderFile, LICENSE_HEADER_DELIMITER);
 	}
 
-	/** Adds the specified version of [ktlint](https://github.com/shyiko/ktlint). */
+	/** Adds the specified version of [ktlint](https://github.com/pinterest/ktlint). */
 	public KotlinFormatExtension ktlint(String version) {
 		Objects.requireNonNull(version);
 		return new KotlinFormatExtension(version, Collections.emptyMap());

plugin-gradle/src/main/java/com/diffplug/gradle/spotless/KotlinGradleExtension.java

@@ -32,7 +32,7 @@ public KotlinGradleExtension(SpotlessExtension rootExtension) {
 		super(rootExtension);
 	}
 
-	/** Adds the specified version of [ktlint](https://github.com/shyiko/ktlint). */
+	/** Adds the specified version of [ktlint](https://github.com/pinterest/ktlint). */
 	public KotlinFormatExtension ktlint(String version) {
 		Objects.requireNonNull(version, "version");
 		return new KotlinFormatExtension(version, Collections.emptyMap());

plugin-gradle/src/test/java/com/diffplug/gradle/spotless/KotlinGradleExtensionTest.java

@@ -74,7 +74,7 @@ public void integration_default() throws IOException {
 	}
 
 	@Test
-	public void integration_shyiko() throws IOException {
+	public void integration_pinterest() throws IOException {
 		setFile("build.gradle").toLines(
 				"plugins {",
 				"    id 'nebula.kotlin' version '1.0.6'",

plugin-maven/CHANGES.md

@@ -2,6 +2,8 @@
 
 ### Version 1.25.0-SNAPSHOT - TBD ([javadoc](https://diffplug.github.io/spotless/javadoc/spotless-maven-plugin/snapshot/), [snapshot](https://oss.sonatype.org/content/repositories/snapshots/com/diffplug/spotless/spotless-maven-plugin/))
 
+* Add support for ktlint `0.34+`, and bump default version from `0.32.0` to `0.34.2`. ([#469](https://github.com/diffplug/spotless/pull/469))
+
 ### Version 1.24.3 - September 23rd 2019 ([javadoc](https://diffplug.github.io/spotless/javadoc/spotless-maven-plugin/1.24.3/), [jcenter](https://bintray.com/diffplug/opensource/spotless-maven-plugin/1.24.3))
 
 * Update jgit from `5.3.2.201906051522-r` to `5.5.0.201909110433-r`. ([#445](https://github.com/diffplug/spotless/pull/445))

plugin-maven/README.md

@@ -162,7 +162,7 @@ By default, all files matching `src/main/kotlin/**/*.kt` and `src/test/kotlin/**
      <endWithNewLine/>
      <trimTrailingWhitespace/>
      <ktlint>
-       <!-- Optional, available versions: https://github.com/shyiko/ktlint/releases -->
+       <!-- Optional, available versions: https://github.com/pinterest/ktlint/releases -->
        <version>0.14.0</version>
      </ktlint>
   </kotlin>

testlib/src/test/java/com/diffplug/spotless/kotlin/KtLintStepTest.java

@@ -52,8 +52,11 @@ public void worksShyiko() throws Exception {
 				});
 	}
 
+	// Regression test to ensure it works on the version it switched to Pinterest (version 0.32.0)
+	// but before 0.34.
+	// https://github.com/diffplug/spotless/issues/419
 	@Test
-	public void worksPinterest() throws Exception {
+	public void worksPinterestAndPre034() throws Exception {
 		// Must use jcenter because `com.andreapivetta.kolor:kolor:0.0.2` isn't available on mavenCentral.
 		// It is a dependency of ktlint.
 		FormatterStep step = KtLintStep.create("0.32.0", TestProvisioner.jcenter());