go-mtree/hierarchy.go

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package mtree
import (
"io"
"sort"
)
// DirectoryHierarchy is the mapped structure for an mtree directory hierarchy
// spec
type DirectoryHierarchy struct {
Entries []Entry
}
// WriteTo simplifies the output of the resulting hierarchy spec
func (dh DirectoryHierarchy) WriteTo(w io.Writer) (n int64, err error) {
sort.Sort(byPos(dh.Entries))
var sum int64
for _, e := range dh.Entries {
i, err := io.WriteString(w, e.String()+"\n")
if err != nil {
return sum, err
}
sum += int64(i)
}
return sum, nil
}