ImageDownloader (groovy script)

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def download(url,path){
    def folder = new File(path.substring(0,path.lastIndexOf('/')))
    if (!folder.exists()) folder.mkdirs()
    def file = new FileOutputStream(path)
    def out = new BufferedOutputStream(file)
    out << new URL(url).openStream()
    out.close()
}

new File('D:/workspace/elearning/web-app/css/_app.css').eachLine{ line ->
    def m = line =~ /url((.*))/
    if(m) {  
    	def from = 'http://www.imagesite.com'+m[0][1]
	    def to = 'c:/tmp'+m[0][1]
	    println "Downloading image from ${from} to ${to}"
	    try{download(from,to)}catch(Exception x){println x}
    }
}