awk Script To Fold Each Field To n Characters Per Line ( works for comma separated files - CSV)

foldfields.awk

#usage awk -F"," -v fm=n -f foldfields.awk <file.csv> | column -t -s","
#Where n is the fold width
{
        maxblk=1;
        for (i=1;i<=NF;i++) {
                blk=1;
                while (length($i)) {
                        y[i"@"blk]=substr($i,1,fm) ;
                        blk++;
                        $i=substr($i,fm-1);
                        if( maxblk<blk)maxblk=blk
                }
        };
        for (k=1;k<=maxblk;k++) {
                for (i=1;i<=NF;i++){
                        if (!y[i"@"k]) {
                                printf " "FS
                        }
                        else {
                                printf y[i"@"k]""FS
                        }
                }
        print ""}
        delete y
}