Switch to go mod

vendor/github.com/vbatts/go-mtree/hierarchy.go

@@ -0,0 +1,48 @@
+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 {
+		str := e.String()
+		i, err := io.WriteString(w, str+"\n")
+		if err != nil {
+			return sum, err
+		}
+		sum += int64(i)
+	}
+	return sum, nil
+}
+
+// UsedKeywords collects and returns all the keywords used in a
+// a DirectoryHierarchy
+func (dh DirectoryHierarchy) UsedKeywords() []Keyword {
+	usedkeywords := []Keyword{}
+	for _, e := range dh.Entries {
+		switch e.Type {
+		case FullType, RelativeType, SpecialType:
+			if e.Type != SpecialType || e.Name == "/set" {
+				kvs := e.Keywords
+				for _, kv := range kvs {
+					kw := KeyVal(kv).Keyword().Prefix()
+					if !InKeywordSlice(kw, usedkeywords) {
+						usedkeywords = append(usedkeywords, KeywordSynonym(string(kw)))
+					}
+				}
+			}
+		}
+	}
+	return usedkeywords
+}