Using Gradle built-ins to detect single-file inputs

src/main/groovy/com/eriwen/gradle/js/ClosureCompilerExtension.groovy

@@ -17,11 +17,12 @@ package com.eriwen.gradle.js
 
 import com.google.javascript.jscomp.CompilerOptions
 import org.gradle.api.file.FileCollection
+import org.gradle.api.tasks.Input
 
 class ClosureCompilerExtension {
     public static final NAME = "closure"
-    CompilerOptions compilerOptions = new CompilerOptions()
-    String compilationLevel = 'SIMPLE_OPTIMIZATIONS'
-    String warningLevel = 'DEFAULT'
-    FileCollection externs = null
+    @Input CompilerOptions compilerOptions = new CompilerOptions()
+    @Input String compilationLevel = 'SIMPLE_OPTIMIZATIONS'
+    @Input String warningLevel = 'DEFAULT'
+    @Input FileCollection externs = null
 }

src/main/groovy/com/eriwen/gradle/js/JsDocExtension.groovy

@@ -15,8 +15,10 @@
  */
 package com.eriwen.gradle.js
 
+import org.gradle.api.tasks.Input
+
 class JsDocExtension {
     public static final String NAME = 'jsdoc'
 
-    Iterable<String> options = []
+    @Input Iterable<String> options = []
 }

src/main/groovy/com/eriwen/gradle/js/Props2JsExtension.groovy

@@ -15,9 +15,11 @@
  */
 package com.eriwen.gradle.js
 
+import org.gradle.api.tasks.Input
+
 class Props2JsExtension {
     public static final NAME = 'props'
 
-    String type = 'json'
-    String functionName = ''
+    @Input String type = 'json'
+    @Input String functionName = ''
 }

src/main/groovy/com/eriwen/gradle/js/ResourceUtil.groovy

@@ -60,4 +60,4 @@ class ResourceUtil {
 
         return zipTargetDir
     }
-}
+}

src/main/groovy/com/eriwen/gradle/js/RhinoExec.groovy

@@ -12,16 +12,20 @@ class RhinoExec {
     private static final String RHINO_MAIN_CLASS = 'org.mozilla.javascript.tools.shell.Main'
     Project project
 
-    void execute(final Iterable<String> execargs, final String workingDirIn = '.', final Boolean ignoreExitCode = false) {
-        def options = {
+    void execute(final Iterable<String> execargs, final Map<String, Object> options = [:]) {
+        final String workingDirIn = options.get('workingDir', '.')
+        final Boolean ignoreExitCode = options.get('ignoreExitCode', false).asBoolean()
+        final OutputStream out = options.get('out', System.out) as OutputStream
+        def execOptions = {
             main = RHINO_MAIN_CLASS
             classpath = project.configurations.rhino
             args = execargs
             workingDir = workingDirIn
             ignoreExitValue = ignoreExitCode
+            standardOutput = out
         }
 
-        project.javaexec(options)
+        project.javaexec(execOptions)
     }
 
     public RhinoExec(final Project projectIn) {

src/main/groovy/com/eriwen/gradle/js/tasks/CombineJsTask.groovy

@@ -20,8 +20,7 @@ import org.gradle.api.tasks.OutputFile
 import org.gradle.api.tasks.SourceTask
 
 class CombineJsTask extends SourceTask {
-    @OutputFile
-    File dest
+    @OutputFile File dest
 
     @TaskAction
     def run() {

src/main/groovy/com/eriwen/gradle/js/tasks/GzipJsTask.groovy

@@ -15,21 +15,16 @@
  */
 package com.eriwen.gradle.js.tasks
 
-import org.gradle.api.GradleException
 import org.gradle.api.tasks.OutputFile
 import org.gradle.api.tasks.SourceTask
 import org.gradle.api.tasks.TaskAction
 
 class GzipJsTask extends SourceTask {
-    @OutputFile
-    File dest
+    @OutputFile File dest
 
     @TaskAction
     def run() {
-        if (source.files.size() != 1) {
-            throw new GradleException("Only 1 file can be minified. Please run MinifyJs for each file.")
-        }
-        final String srcPath = (source.files.toArray() as File[])[0].canonicalPath
+        final String srcPath = source.singleFile.canonicalPath
         ant.gzip(src: srcPath, destfile: "${srcPath}.gz")
         ant.move(file: "${srcPath}.gz", tofile: dest.canonicalPath)
     }

src/main/groovy/com/eriwen/gradle/js/tasks/JsDocTask.groovy

@@ -51,6 +51,6 @@ class JsDocTask extends SourceTask {
         args.addAll(['-d', destinationDir.absolutePath])
         args.addAll(project.jsdoc.options.collect { it })
 
-        rhino.execute(args, workingDir)
+        rhino.execute(args, [workingDir: workingDir])
     }
 }

src/main/groovy/com/eriwen/gradle/js/tasks/MinifyJsTask.groovy

@@ -17,25 +17,19 @@ package com.eriwen.gradle.js.tasks
 
 
 import com.eriwen.gradle.js.JsMinifier
-import org.gradle.api.GradleException
 import org.gradle.api.tasks.OutputFile
 import org.gradle.api.tasks.SourceTask
 import org.gradle.api.tasks.TaskAction
 
 class MinifyJsTask extends SourceTask {
     private static final JsMinifier MINIFIER = new JsMinifier()
 
-    @OutputFile
-    File dest
+    @OutputFile File dest
 
     @TaskAction
     def run() {
-        if (source.files.size() != 1) {
-            throw new GradleException("Only 1 file can be minified. Please run MinifyJs for each file.")
-        }
-
         Set<File> externsFiles = project.closure.externs ? project.closure.externs.files : [] as Set<File>
-        MINIFIER.minifyJsFile((source.files.toArray() as File[])[0], externsFiles, dest,
+        MINIFIER.minifyJsFile(source.singleFile, externsFiles, dest,
                 project.closure.compilerOptions, project.closure.warningLevel, project.closure.compilationLevel)
     }
 }