Fix compatibility issue introduced by ktfmt 0.51

CHANGES.md

@@ -12,6 +12,9 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 ## [Unreleased]
 ### Changes
 * Bump default `ktlint` version to latest `1.2.1` -> `1.3.0`. ([#2165](https://github.com/diffplug/spotless/pull/2165))
+* Bump default `ktfmt` version to latest `0.49` -> `0.51`. ([#2172](https://github.com/diffplug/spotless/pull/2172))
+### Fixed
+* Fixed `ktfmt` `0.51` compatiblity issues. ([#2171](https://github.com/diffplug/spotless/issues/2171))
 
 ## [3.0.0.BETA1] - 2024-06-04
 ### Added

lib/build.gradle

@@ -101,7 +101,7 @@ dependencies {
 	jacksonCompileOnly "com.fasterxml.jackson.core:jackson-databind:$VER_JACKSON"
 	jacksonCompileOnly "com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:$VER_JACKSON"
 	// ktfmt
-	ktfmtCompileOnly "com.facebook:ktfmt:0.49"
+	ktfmtCompileOnly "com.facebook:ktfmt:0.51"
 	ktfmtCompileOnly("com.google.googlejavaformat:google-java-format") {
 		version {
 			strictly '1.7' // for JDK 8 compatibility

lib/src/ktfmt/java/com/diffplug/spotless/glue/ktfmt/KtfmtFormatterFunc.java

@@ -15,8 +15,6 @@
  */
 package com.diffplug.spotless.glue.ktfmt;
 
-import java.lang.reflect.Method;
-
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
@@ -34,15 +32,15 @@ public final class KtfmtFormatterFunc implements FormatterFunc {
 	private final KtfmtFormattingOptions ktfmtFormattingOptions;
 
 	public KtfmtFormatterFunc() {
-		this(KtfmtStyle.DEFAULT, null);
+		this(KtfmtStyle.META, null);
 	}
 
 	public KtfmtFormatterFunc(@Nonnull KtfmtStyle style) {
 		this(style, null);
 	}
 
 	public KtfmtFormatterFunc(@Nullable KtfmtFormattingOptions ktfmtFormattingOptions) {
-		this(KtfmtStyle.DEFAULT, ktfmtFormattingOptions);
+		this(KtfmtStyle.META, ktfmtFormattingOptions);
 	}
 
 	public KtfmtFormatterFunc(@Nonnull KtfmtStyle style, @Nullable KtfmtFormattingOptions ktfmtFormattingOptions) {
@@ -59,11 +57,8 @@ public String apply(@Nonnull String input) throws Exception {
 	private FormattingOptions createFormattingOptions() throws Exception {
 		FormattingOptions formattingOptions;
 		switch (style) {
-		case DEFAULT:
-			formattingOptions = new FormattingOptions();
-			break;
-		case DROPBOX:
-			formattingOptions = Formatter.DROPBOX_FORMAT;
+		case META:
+			formattingOptions = Formatter.META_FORMAT;
 			break;
 		case GOOGLE:
 			formattingOptions = Formatter.GOOGLE_FORMAT;
@@ -72,30 +67,17 @@ private FormattingOptions createFormattingOptions() throws Exception {
 			formattingOptions = Formatter.KOTLINLANG_FORMAT;
 			break;
 		default:
-			throw new IllegalStateException("Unknown formatting option");
+			throw new IllegalStateException("Unknown formatting option " + style);
 		}
 
 		if (ktfmtFormattingOptions != null) {
-			try {
-				formattingOptions = formattingOptions.copy(
-						formattingOptions.getStyle(),
-						ktfmtFormattingOptions.getMaxWidth().orElse(formattingOptions.getMaxWidth()),
-						ktfmtFormattingOptions.getBlockIndent().orElse(formattingOptions.getBlockIndent()),
-						ktfmtFormattingOptions.getContinuationIndent().orElse(formattingOptions.getContinuationIndent()),
-						ktfmtFormattingOptions.getRemoveUnusedImport().orElse(formattingOptions.getRemoveUnusedImports()),
-						formattingOptions.getDebuggingPrintOpsAfterFormatting(),
-						formattingOptions.getManageTrailingCommas());
-			} catch (NoSuchMethodError e) {
-				//noinspection JavaReflectionMemberAccess, ABI change from ktfmt 0.47
-				Method copyMethod = formattingOptions.getClass().getMethod("copy", FormattingOptions.Style.class, int.class, int.class, int.class, boolean.class, boolean.class);
-				formattingOptions = (FormattingOptions) copyMethod.invoke(formattingOptions,
-						formattingOptions.getStyle(),
-						ktfmtFormattingOptions.getMaxWidth().orElse(formattingOptions.getMaxWidth()),
-						ktfmtFormattingOptions.getBlockIndent().orElse(formattingOptions.getBlockIndent()),
-						ktfmtFormattingOptions.getContinuationIndent().orElse(formattingOptions.getContinuationIndent()),
-						ktfmtFormattingOptions.getRemoveUnusedImport().orElse(formattingOptions.getRemoveUnusedImports()),
-						formattingOptions.getDebuggingPrintOpsAfterFormatting());
-			}
+			formattingOptions = formattingOptions.copy(
+					ktfmtFormattingOptions.getMaxWidth().orElse(formattingOptions.getMaxWidth()),
+					ktfmtFormattingOptions.getBlockIndent().orElse(formattingOptions.getBlockIndent()),
+					ktfmtFormattingOptions.getContinuationIndent().orElse(formattingOptions.getContinuationIndent()),
+					formattingOptions.getManageTrailingCommas(),
+					ktfmtFormattingOptions.getRemoveUnusedImport().orElse(formattingOptions.getRemoveUnusedImports()),
+					formattingOptions.getDebuggingPrintOpsAfterFormatting());
 		}
 
 		return formattingOptions;

lib/src/ktfmt/java/com/diffplug/spotless/glue/ktfmt/KtfmtStyle.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022 DiffPlug
+ * Copyright 2022-2024 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,5 +16,5 @@
 package com.diffplug.spotless.glue.ktfmt;
 
 public enum KtfmtStyle {
-	DEFAULT, DROPBOX, GOOGLE, KOTLIN_LANG
+	META, GOOGLE, KOTLIN_LANG
 }