get content of folder to json

build.gradle

import groovy.io.FileType

buildscript {
	repositories {
		mavenCentral()
	}
}

task rename(type: Copy) {
    from 'in'
    into 'out'
    // Use a closure to map the file name
    rename { String fileName ->
        generateMD5(fileName)+fileExtension(fileName);
    }

}
task createList2() {
	File srcDir
	File list = new File("root.js")
	list.createNewFile()
	list.write("[")
	
	FilenameFilter fnf = {d, f-> f ==~ '\\.*'  } as FilenameFilter 
    // Create a file collection using a closure
    FileCollection collection = files { srcDir.listFiles([accept:{d, f-> f.indexOf(".") > 0 }] as FilenameFilter) }
    
    Collection c = []
	


	def dirs = []

	def dir = new File(".")
	dir.eachFileRecurse (FileType.DIRECTORIES) { file ->
		dirs << file
	}
	
	dirs.each {
		println it.path
		createJSON(it.name)
		c.add(it)
	}
    
    if(!c.isEmpty())
    {
    	Object last = c.pop();
    	c.each { list <<"{\"folder\":\"" + it +"\"}," }
		list <<"{\"folder\":\"" + last +"\"}"
	}
    list << "]"
}

def createJSON(String folder)
{
	File srcDir
	File list = new File(folder+".js")
	list.createNewFile()
	list.write("[")
	
	//FilenameFilter fnf = {d, f-> f ==~ /.*.docx/  } as FilenameFilter 
    // Create a file collection using a closure
    FileCollection collection = files { srcDir.listFiles([accept:{d, f-> f.indexOf(".docx") < 0 }] as FilenameFilter) }
    
    Collection c = []
	
    srcDir = file(folder)
    println "Contents of $srcDir.name"
    collection.collect { it.name }.sort().each { c.add(it); }
    
    if(!c.isEmpty())
    {
    	Object last = c.pop();
    	c.each { list <<"{\"name\":\"" + it +"\",\"text\":\"\"}," }
		list <<"{\"name\":\"" + last +"\",\"text\":\"\"}"
	}
    list << "]"
}