Spotless should use itself better

CHANGES.md

@@ -10,10 +10,11 @@ This document is intended for Spotless developers.
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
-### Changed
+### Build
 * All `CHANGES.md` are now in keepachangelog format. ([#507](https://github.com/diffplug/spotless/pull/507))
 * We now use [javadoc.io](https://javadoc.io/) instead of github pages. ([#508](https://github.com/diffplug/spotless/pull/508))
 * We no longer publish `-SNAPSHOT` for every build to `master`, since we have good [JitPack integration](https://github.com/diffplug/spotless/blob/master/CONTRIBUTING.md#gradle---any-commit-in-a-public-github-repo-this-one-or-any-fork). ([#508](https://github.com/diffplug/spotless/pull/508))
+* Improved how we use Spotless on itself. ([#509](https://github.com/diffplug/spotless/pull/509))
 
 ## [1.27.0] - 2020-01-01
 * Ignored `KtLintStepTest`, because [gradle/gradle#11752](https://github.com/gradle/gradle/issues/11752) is causing too many CI failures. ([#499](https://github.com/diffplug/spotless/pull/499))

_ext/eclipse-wtp/build.gradle

@@ -1,3 +1,6 @@
+plugins {
+	id 'com.diffplug.gradle.spotless' version '3.27.0'
+}
 ext {
 	developers = [
 		fvgh: [ name: 'Frank Vennemeyer', email: 'frankgh@zoho.com' ],
@@ -118,3 +121,10 @@ fileTree(dir: testLocation).include('**/*Test.java').each { file ->
 	}
 	test.dependsOn "${testFile}"
 }
+
+spotless {
+	format 'xml', {
+		target 'src/main/resources/**/*.xml'
+		eclipseWtp('xml').configFile 'spotless.xmlformat.prefs'
+	}
+}

build.gradle

@@ -11,6 +11,23 @@ plugins {
 	id 'org.jdrupes.mdoclet' version '1.0.5' apply false
 	// https://github.com/spotbugs/spotbugs/releases
 	id "com.github.spotbugs" version "2.0.0" apply false
+	// here
+	id 'com.diffplug.gradle.spotless' version '3.27.0'
+}
+
+// this is... not the canonical way to do spotless :)
+allprojects {
+	apply from: rootProject.file('gradle/spotless.gradle')
+}
+apply from: rootProject.file('gradle/spotless-freshmark.gradle')
+
+spotless {
+	format 'dotfiles', {
+		target '.gitignore', '.gitattributes', '.editorconfig'
+		indentWithSpaces(2)
+		trimTrailingWhitespace()
+		endWithNewline()
+	}
 }
 
 // root eclipse project

gradle/spotless-freshmark.gradle

@@ -0,0 +1,14 @@
+apply plugin: 'com.diffplug.gradle.spotless'
+spotless {
+	freshmark {
+		target '*.md'
+		propertiesFile(rootProject.file('gradle.properties'))
+		properties {
+			it.put('yes', ':+1:')
+			it.put('no', ':white_large_square:')
+		}
+		indentWithSpaces(2)
+		trimTrailingWhitespace()
+		endWithNewline()
+	}
+}

gradle/spotless.gradle

@@ -0,0 +1,32 @@
+apply plugin: 'com.diffplug.gradle.spotless'
+spotless {
+	def noInternalDepsClosure = {
+		String text = it
+		/*
+		 * No good way to get around using this import:
+		 * https://github.com/gradle/gradle/issues/3191
+		 */
+		String regex = "import org\\.gradle\\.api\\.internal\\.(?!plugins\\.DslObject)"
+		if ((text.contains('import org.gradle.internal.') || text.find(regex)) &&
+		!text.contains('def noInternalDepsClosure')) {
+			throw new AssertionError("Accidental internal import")
+		}
+	}
+	if (project.name != 'ide' && project != rootProject) {
+		// the rootProject and ide projects don't have any java
+		java {
+			custom 'noInternalDeps', noInternalDepsClosure
+			bumpThisNumberIfACustomStepChanges(1)
+			licenseHeaderFile rootProject.file('gradle/spotless.license')
+			importOrderFile   rootProject.file('gradle/spotless.importorder')
+			eclipse().configFile rootProject.file('gradle/spotless.eclipseformat.xml')
+			trimTrailingWhitespace()
+			removeUnusedImports()
+		}
+	}
+	groovyGradle {
+		target '*.gradle'
+		paddedCell()
+		greclipse().configFile rootProject.files('gradle/spotless.eclipseformat.xml', 'gradle/spotless.groovyformat.prefs')
+	}
+}

plugin-gradle/build.gradle

@@ -2,6 +2,7 @@ ext.artifactId = project.artifactIdGradle
 ext.version = project.versionGradle
 apply from: rootProject.file('gradle/java-setup.gradle')
 apply from: rootProject.file('gradle/java-publish.gradle')
+apply from: rootProject.file('gradle/spotless-freshmark.gradle')
 
 apply plugin: 'java-library'
 apply plugin: 'com.gradle.plugin-publish'
@@ -28,24 +29,19 @@ dependencies {
 
 tasks.eclipse.dependsOn(pluginUnderTestMetadata)
 
-/////////////////////
-// SPOTLESS (fake) //
-/////////////////////
-task spotlessCheck(type: JavaExec) {
-	classpath sourceSets.test.runtimeClasspath
-	main = 'com.diffplug.gradle.spotless.SelfTestCheck'
-}
-check.dependsOn(spotlessCheck)
-
-task spotlessApply(type: JavaExec) {
-	classpath sourceSets.test.runtimeClasspath
-	main = 'com.diffplug.gradle.spotless.SelfTestApply'
-}
 test { testLogging.showStandardStreams = true }
 
-test { useJUnit { excludeCategories 'com.diffplug.spotless.category.NpmTest' } }
+test {
+	useJUnit {
+		excludeCategories 'com.diffplug.spotless.category.NpmTest'
+	}
+}
 
-task npmTest(type: Test) { useJUnit { includeCategories 'com.diffplug.spotless.category.NpmTest' } }
+task npmTest(type: Test) {
+	useJUnit {
+		includeCategories 'com.diffplug.spotless.category.NpmTest'
+	}
+}
 
 //////////////////////////
 // GRADLE PLUGIN PORTAL //

plugin-maven/build.gradle

@@ -6,6 +6,8 @@ plugins {
 	id 'cz.malohlava.visteg' version '1.0.5' // https://github.com/mmalohlava/gradle-visteg
 }
 
+apply from: rootProject.file('gradle/spotless-freshmark.gradle')
+
 // to generate taskGraph.pdf
 // - set enabled (below) to true
 // - run: ./gradlew :plugin-maven:test