Patch a bug on compressed output

pkg/obitax/csvtaxdump_write.go

@@ -1 +1,38 @@
 package obitax
+
+import (
+	"strings"
+
+	"github.com/TuftsBCB/io/newick"
+)
+
+func (taxonomy *Taxonomy) Newick() string {
+	if taxonomy == nil {
+		return ""
+	}
+
+	iterator := taxonomy.AsTaxonSet().Sort().Iterator()
+
+	nodes := make(map[*string]*newick.Tree, taxonomy.Len())
+	trees := make([]*newick.Tree, 0)
+
+	for iterator.Next() {
+		taxon := iterator.Get()
+		tree := &newick.Tree{Label: taxon.String()}
+		nodes[taxon.Node.id] = tree
+		if parent, ok := nodes[taxon.Parent().Node.id]; ok {
+			parent.Children = append(parent.Children, *tree)
+		} else {
+			trees = append(trees, tree)
+		}
+	}
+
+	rep := strings.Builder{}
+
+	for _, tree := range trees {
+		rep.WriteString(tree.String())
+		rep.WriteString("\n")
+	}
+
+	return rep.String()
+}

pkg/obitax/newick_write.go

@@ -0,0 +1 @@
+package obitax