How to use the ftp.dir function in ftp

w["frequent"]="42*1";
w["fro"]="402*1";
w["from"]="11*1,13*1,16*1,17*2,26*2,42*17,56*1,57*1,60*1,64*1,69*1,77*2,78*1,79*1,97*3,99*5,100*1,101*1,102*1,107*1,115*1,117*1,124*1,126*1,130*2,138*1,139*3,143*1,147*3,150*1,154*1,158*3,159*1,160*2,166*1,167*2,168*1,173*1,181*2,182*2,184*1,191*1,194*1,195*1,210*1,217*1,224*1,232*1,234*2,238*3,239*1,242*1,243*1,247*1,253*1,257*2,259*3,261*2,263*1,273*3,278*1,284*1,289*1,295*1,302*1,317*1,318*1,324*1,325*2,337*1,340*4,354*2,356*2,357*2,363*2,365*3,366*7,377*5,378*2,382*2,386*1,387*1,395*1,396*1,402*15,403*1,414*2,416*1,419*1,422*3,425*1,440*1,441*1,448*2,451*5,459*1,462*3,465*1,466*2,468*3,470*2,482*2,499*42,502*1,505*1,507*2,512*1,513*1,515*1,518*2,521*1,523*3,529*2";
w["from."]="17*1,166*1,168*1,182*1,325*1,356*1,357*1,448*1,523*1";
w["from:"]="377*3,499*1";
w["fromdir"]="18*1,238*1";
w["frompattern"]="247*1";
w["front"]="317*1,402*11,524*1";
w["front-cov"]="402*7";
w["front-matt"]="402*2";
w["frontend"]="146*1,338*1";
w["fsf"]="402*1";
w["fsf.org"]="402*2";
w["fstype"]="243*1";
w["ftp"]="129*1,135*1,379*1,445*3";
w["ftp.dir"]="379*1";
w["ftp.host"]="379*1";
w["ftp.mode"]="379*1";
w["ftp.password"]="379*1";
w["ftp.port"]="379*1";
w["ftp.upload"]="129*1,135*1";
w["ftp.usernam"]="379*1";
w["ftpdeploy"]="379*2";
w["ftpdeploytask"]="445*46,446*1";
w["fulfil"]="174*1";
w["full"]="15*1,42*3,107*1,121*1,158*1,243*1,320*2,354*1,377*1,402*2,403*1,456*1,506*1,515*1,528*1";
w["fuller"]="107*1";
w["fulli"]="221*1,354*1,495*1";
w["fulloy"]="354*1";
w["function"]="17*1,28*1,42*10,43*1,60*1,68*2,99*3,143*1,157*1,167*1,177*3,182*1,200*1,221*1,223*1,238*3,254*1,257*1,288*11,294*4,300*1,302*1,307*1,319*1,325*1,328*1,356*1,357*1,365*1,372*2,382*1,399*1,402*1,414*1,440*1,448*1,464*1,504*1,518*1,523*1";
w["function."]="143*1,167*1,223*3,254*1,294*1,414*1,440*1,504*1";
w["functionality."]="28*1";