Fix Kotlin multiplatform support when the plugin is applied later.

CHANGELOG.md

@@ -11,3 +11,7 @@
 
 - Added missing support for the Kotlin multiplatform plugin ([#1](https://github.com/YumiProject/yumi-gradle-licenser/issues/1)).
 - Improved functional tests.
+
+## 1.1.1
+
+- Fixed Kotlin multiplatform support when the plugin is applied after the licenser ([#1](https://github.com/YumiProject/yumi-gradle-licenser/issues/1#issuecomment-1931569894)).

build.gradle.kts

@@ -1,12 +1,12 @@
 plugins {
-	id("dev.yumi.gradle.licenser").version("1.0.+")
+	id("dev.yumi.gradle.licenser").version("1.1.+")
 	id("com.gradle.plugin-publish").version("1.2.0")
 	id("maven-publish")
 	id("signing")
 }
 
 group = "dev.yumi"
-version = "1.1.0"
+version = "1.1.1"
 val javaVersion = 17
 
 repositories {

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew.bat

@@ -43,11 +43,11 @@ set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute
 
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 
@@ -57,11 +57,11 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
 if exist "%JAVA_EXE%" goto execute
 
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 

src/main/java/dev/yumi/gradle/licenser/YumiLicenserGradlePlugin.java

@@ -25,7 +25,7 @@
  * Represents the Yumi Licenser Gradle plugin.
  *
  * @author LambdAurora
- * @version 1.1.0
+ * @version 1.1.1
  * @since 1.0.0
  */
 public class YumiLicenserGradlePlugin implements Plugin<Project> {
@@ -60,13 +60,13 @@ public void apply(Project project) {
 					});
 		});
 
-		if (project.getPlugins().findPlugin("org.jetbrains.kotlin.multiplatform") != null) {
+		project.getPlugins().withId("org.jetbrains.kotlin.multiplatform", plugin -> {
 			try {
 				KotlinMultiplatformCompat.applyTasksForKotlinMultiplatform(project, ext);
 			} catch (Throwable e) {
 				throw new RuntimeException(e);
 			}
-		}
+		});
 
 		var globalCheck = this.registerGroupedTask(project, CHECK_TASK_PREFIX, task -> {
 			task.dependsOn(project.getTasks().withType(CheckLicenseTask.class));

src/main/java/dev/yumi/gradle/licenser/compat/KotlinMultiplatformCompat.java

@@ -12,6 +12,7 @@
 import dev.yumi.gradle.licenser.YumiLicenserGradlePlugin;
 import dev.yumi.gradle.licenser.task.ApplyLicenseTask;
 import dev.yumi.gradle.licenser.task.CheckLicenseTask;
+import dev.yumi.gradle.licenser.util.Utils;
 import org.gradle.api.NamedDomainObjectContainer;
 import org.gradle.api.Project;
 import org.gradle.api.file.SourceDirectorySet;
@@ -25,7 +26,7 @@
  * No direct reference to the Kotlin multiplatform plugin is made due to classloader isolation issues.
  *
  * @author LambdAurora
- * @version 1.1.0
+ * @version 1.1.1
  * @since 1.1.0
  */
 @ApiStatus.Internal
@@ -37,6 +38,8 @@ private KotlinMultiplatformCompat() {
 	}
 
 	public static void applyTasksForKotlinMultiplatform(Project project, YumiLicenserGradleExtension ext) throws Throwable {
+		Utils.debugLog(project, "Found Kotlin Multiplatform plugin, applying special configuration...");
+
 		var kotlinExt = project.getExtensions().getByName("kotlin"); // Kotlin multiplatform has a Kotlin extension.
 
 		// We get the sourceSets of the Kotlin multiplatform plugin.
@@ -50,7 +53,8 @@ public static void applyTasksForKotlinMultiplatform(Project project, YumiLicense
 
 				if (ext.isSourceSetExcluded(name)) return;
 
-				var kotlinSet = (SourceDirectorySet) LOOKUP.unreflect(sourceSet.getClass().getMethod("getKotlin")).invoke(sourceSet);
+				var kotlinSet = (SourceDirectorySet) LOOKUP.unreflect(sourceSet.getClass().getMethod("getKotlin"))
+						.invoke(sourceSet);
 
 				project.getTasks().register(
 						getTaskName("check", name), CheckLicenseTask.class,

src/main/java/dev/yumi/gradle/licenser/util/Utils.java

@@ -9,6 +9,7 @@
 package dev.yumi.gradle.licenser.util;
 
 import dev.yumi.gradle.licenser.YumiLicenserGradleExtension;
+import dev.yumi.gradle.licenser.YumiLicenserGradlePlugin;
 import org.gradle.api.GradleException;
 import org.gradle.api.Project;
 import org.jetbrains.annotations.ApiStatus;
@@ -31,7 +32,7 @@
  * Provides various utilities.
  *
  * @author LambdAurora
- * @version 1.0.0
+ * @version 1.1.1
  * @since 1.0.0
  */
 @ApiStatus.Internal
@@ -40,6 +41,19 @@ private Utils() {
 		throw new UnsupportedOperationException("Utils only contains static definitions.");
 	}
 
+	/**
+	 * Logs a message if the plugin is in debug mode.
+	 *
+	 * @param project the project
+	 * @param message the message to log
+	 * @param params the parameters to replace in the message
+	 */
+	public static void debugLog(Project project, String message, Object... params) {
+		if (YumiLicenserGradlePlugin.DEBUG_MODE) {
+			project.getLogger().lifecycle("[" + project.getPath() + "][Yumi Gradle Licenser] " + message, params);
+		}
+	}
+
 	/**
 	 * Matches a character in a string at a given index which could be out of bounds.
 	 *