Remove space and special character from file name

fileSpaceRenamer.groovy

// File Space Renamer
// Renames any file which has %20 %40 (space) : ;
//  %20     -> _
//  %40     -> @
//  (space) -> _
//  eg "Hello World.txt%40" -> "Hello_World@.txt"
new File(".").eachFile { file -> 
    if(file.isFile()){
        curName = file.getPath().replaceAll(/.\\(.*)/) {m0,m1 -> m1}
        newFileN = URLDecoder.decode(curName, "UTF-8").replaceAll(/%20/,"_").replaceAll(/%40/,"@").replaceAll(/ /,"_").replaceAll(/:/,"_").replaceAll(/;/,"_")
        if (newFileN != curName) {
           newName = new File(URLDecoder.decode(curName, "UTF-8"))
           println "現行ファイル名: "+curName
           println "新規ファイル名: "+newFileN
           file.renameTo(new File(newFileN)) 
        }
    }
}