when:
        inputDir.file('.gitignore').text = "some ignored file"
        inputDir.file('#ignored#').text = "some ignored file"
        inputDir.file('.git/any-name.txt').text = "some ignored file"
        inputDir.file('something/.git/deeper/dir/structure/any-name.txt').text = "some ignored file"
        inputDir.file('._ignored').text = "some ignored file"
        inputDir.file('some-file.txt~').text = "some ignored file"

    TestFile inputDir
    private static int changesLimit = SHOW_INDIVIDUAL_CHANGES_LIMIT

    def setup() {
        buildFile << """
            task theTask {
              inputs.dir "inputDir"
              outputs.files "build/outputs"
              doLast {}
            }
        """
        inputDir = file("inputDir").createDir()
    }

tasks.register("originalInputs") {
    val inputsDir = layout.projectDirectory.dir("inputs")
    outputs.dir(inputsDir)
    doLast {
        inputsDir.file("1.txt").asFile.writeText("Content for file 1.")
        inputsDir.file("2.txt").asFile.writeText("Content for file 2.")
        inputsDir.file("3.txt").asFile.writeText("Content for file 3.")
    }
}

// tag::updated-inputs[]
tasks.register("updateInputs") {

                    }
                }
            }
        """
        def inputDir = file("inputDir")
        inputDir.mkdirs()
        def inputJar = file("input.jar")
        def jarSources = file("jarDir")
        jarSources.mkdirs()

        when:
        inputDir.file("org/gradle/input.txt").text = "input.txt"
        inputDir.file("org/gradle/ignored.txt").text = "some"

    def "executes using the Assembler"() {
        def inputDir = temporaryFolder.createFile("sourceFile")
        def result = Mock(WorkResult)
        when:
        assembleTask.toolChain = toolChain
        assembleTask.targetPlatform = platform
        assembleTask.assemblerArgs = ["arg"]
        assembleTask.objectFileDir = temporaryFolder.file("outputFile")
        assembleTask.source inputDir
        execute(assembleTask)

        then:

        buildFile << """
class GenerateSources extends DefaultTask {
    @InputDirectory File inputDir
    @OutputDirectory File sourceDir
    @OutputDirectory @Optional File headerDir

    @TaskAction
    void processInputFiles() {
        project.copy {
            from inputDir
            into sourceDir.parentFile
            filter { String line ->
                line.replaceAll('REMOVE_ME', '')

                @InputDirectory
                Path inputDir
                @OutputFile
                Path outputFile
                @OutputDirectory
                Path outputDir

                @TaskAction
                def go() {
                    outputFile.toFile().text = inputFile.toFile().text
                    inputDir.toFile().listFiles().each { f -> outputDir.resolve(f.name).toFile().text = f.text }

tasks.register('originalInputs') {
    def inputsDir = layout.projectDirectory.dir('inputs')
    outputs.dir(inputsDir)
    doLast {
        inputsDir.file('1.txt').asFile.text = 'Content for file 1.'
        inputsDir.file('2.txt').asFile.text = 'Content for file 2.'
        inputsDir.file('3.txt').asFile.text = 'Content for file 3.'
    }
}

// tag::updated-inputs[]
tasks.register('updateInputs') {
    def inputsDir = layout.projectDirectory.dir('inputs')

        _ * a.outputDirectory >> file("inputDir")
        def projectB = project(project, "b")
        Task b = task("b", project: projectB, type: AsyncWithDestroysFile)
        _ * b.destroysFile >> file("inputDir")
        def projectC = project(project, "c")
        Task c = task("c", project: projectC, type: AsyncWithInputDirectory, dependsOn: [a])
        _ * c.inputDirectory >> file("inputDir")

import org.gradle.api.tasks.*

public class DirTransformerTask extends DefaultTask {
    private File inputDir
    private File outputDir

    @InputDirectory
    public File getInputDir() {
        return inputDir
    }

    public void setInputDir(File inputDir) {
        this.inputDir = inputDir
    }

    @OutputDirectory
    public File getOutputDir() {
        return outputDir
    }