Add spotless code formatter configuration

build.gradle

@@ -7,15 +7,15 @@ buildscript {
 		maven { url "https://plugins.gradle.org/m2/" }
 	}
 	dependencies {
-		classpath 'nl.javadude.gradle.plugins:license-gradle-plugin:0.7.0'
 		classpath "com.jfrog.bintray.gradle:gradle-bintray-plugin:1.2"
 		classpath "com.gradle.publish:plugin-publish-plugin:0.9.1"
+		classpath "com.diffplug.gradle.spotless:spotless:1.3.3"
 	}
 }
 
 apply plugin: "com.gradle.plugin-publish"
+apply plugin: "com.diffplug.gradle.spotless"
 apply plugin: "java"
-apply plugin: "license"
 apply plugin: "eclipse"
 apply plugin: "idea"
 
@@ -32,6 +32,47 @@ ext {
 	defaultEncoding = "UTF-8"
 }
 
+// ======== spotless ========
+
+spotless {
+	java {
+		licenseHeaderFile 'gradle/spotless.license.java'
+		importOrderFile   'gradle/spotless.importorder'
+		eclipseFormatFile 'gradle/spotless.eclipseformat.xml'
+
+		// Eclipse formatter screws up long literals with underscores inside of annotations (see issue #14)
+		//    @Max(value = 9_999_999 L) // what Eclipse does
+		//    @Max(value = 9_999_999L)  // what I wish Eclipse did
+		custom 'Long literal fix', { it.replaceAll('([0-9_]+) [Ll]', '$1L') }
+
+		// Eclipse formatter puts excess whitespace after lambda blocks
+		//    funcThatTakesLambdas(x -> {} , y -> {} )	// what Eclipse does
+		//    funcThatTakesLambdas(x -> {}, y -> {})	// what I wish Eclipse did
+		custom 'Lambda fix', { it.replace('} )', '})').replace('} ,', '},') }
+
+		indentWithTabs()
+		endWithNewline()
+
+		customReplaceRegex 'Add space before comment asterisk', '^(\\t*)\\*', '$1 *'
+//		customReplaceRegex 'Remove indent before line comment', '^\\t*//', '//'
+	}
+
+	// this will create two tasks: spotlessMiscCheck and spotlessMiscApply
+	format 'misc', {
+		// target determines which files this format will apply to
+		// - if you pass a string or a list of strings, they will be treated
+		//	   as 'include' parameters to a fileTree in the root directory
+		// - if you pass a FileCollection, it will pass through untouched
+		//	   e.g. project.files('build.gradle', 'settings.gradle')
+		// - if you pass anything else, it will be sent to project.files(yourArg)
+		target '**/*.gradle', '**/*.md', '**/.gitignore'
+
+		// spotless has built-in rules for the most basic formatting tasks
+		indentWithTabs() // or spaces. Takes an integer argument if you don't like 4
+		endWithNewline()
+	}
+}
+
 // ======== create source and javadoc bundles ========
 
 task sourcesJar(type: Jar, dependsOn: classes) {
@@ -113,15 +154,6 @@ task wrapper(type: Wrapper) {
 	gradleVersion = "2.5"
 }
 
-// ======== License =======
-license {
-	ext.year = Calendar.getInstance().get(Calendar.YEAR)
-	header file("copyright/HEADER")
-	strictCheck true
-	mapping {
-		java = "SLASHSTAR_STYLE"
-	}
-}
 
 // ======== IDE ========
 eclipse {