package main
import (
    "path/filepath"
    "os"
    "flag"
    "fmt"
    "time"
)
const (
    IsDirectory             = iota
    IsRegular
    IsSymlink
)
type sysFile struct {  
    fType       int
    fName       string
    fLink       string
    fSize       int64
    fMtime      time.Time
    fPerm       os.FileMode
}
type F struct {
    files []*sysFile
}
func (self *F) visit(path string, f os.FileInfo, err error) error {
    if ( f == nil ) {
        return err
    }
    var tp int
    if f.IsDir() {
        tp = IsDirectory
    }else if (  f.Mode() & os.ModeSymlink ) > 0 {
        tp = IsSymlink 
    }else{
        tp = IsRegular
    }
    inoFile := &sysFile{
        fName : path,
        fType : tp,
        fPerm : f.Mode(),
        fMtime: f.ModTime(),
        fSize : f.Size(),
    }
    self.files = append( self.files, inoFile )
    return nil
} 
func main() {
    flag.Parse()
    root := flag.Arg(0)
    self := F{
        files: make( []*sysFile, 0 ),
    }
    err := filepath.Walk(root, func(path string, f os.FileInfo, err error) error {
        return self.visit(path, f, err)
    })
    if err != nil {  
      fmt.Printf("filepath.Walk() returned %v/n", err)
    }
    for _, v := range self.files {
        fmt.Println( v.fName,v.fSize )
    }
}