add tree view

internal/piwigo/piwigotools/tree.go

@@ -8,6 +8,7 @@ import (
 type Tree interface {
 	AddNode(string) Tree
 	FlatView() chan string
+	TreeView() chan string
 }
 
 type node struct {
@@ -51,3 +52,38 @@ func (t *node) FlatView() (out chan string) {
 	}()
 	return out
 }
+
+func (t *node) TreeView() (out chan string) {
+	out = make(chan string)
+	treeLinkChar := "│   "
+	treeMidChar := "├── "
+	treeEndChar := "└── "
+	treeAfterEndChar := "    "
+
+	go func() {
+		defer close(out)
+
+		var tree func(string, *node)
+
+		tree = func(prefix string, t *node) {
+			for i, st := range t.Children {
+				switch i {
+				case len(t.Children) - 1:
+					out <- prefix + treeEndChar + st.Name
+					tree(prefix+treeAfterEndChar, st)
+				case 0:
+					out <- prefix + treeMidChar + st.Name
+					tree(prefix+treeLinkChar, st)
+				default:
+					out <- prefix + treeMidChar + st.Name
+					tree(prefix+treeLinkChar, st)
+				}
+			}
+		}
+
+		out <- t.Name
+		tree("", t)
+
+	}()
+	return out
+}

internal/piwigocli/images_list.go

@@ -114,66 +114,15 @@ func (c *ImagesListCommand) Execute(args []string) error {
 	}
 	bar.Close()
 
-	results := rootTree.FlatView()
+	var results chan string
+	if c.Tree {
+		results = rootTree.TreeView()
+	} else {
+		results = rootTree.FlatView()
+	}
 	for filename := range results {
 		fmt.Println(filename)
 	}
 
-	// sort.Strings(results)
-
-	// if !c.Tree {
-	// 	for _, r := range results {
-	// 		fmt.Println(r)
-	// 	}
-	// 	return nil
-	// }
-
-	// type Tree struct {
-	// 	Name     string
-	// 	Children []*Tree
-	// }
-
-	// treeMap := make(map[string]*Tree)
-	// treeMap[""] = &Tree{Name: "."}
-
-	// for _, r := range results {
-	// 	parentpath := ""
-	// 	fullpath := ""
-	// 	for _, s := range strings.Split(r, "/") {
-	// 		parentpath = fullpath
-	// 		fullpath += s + "/"
-	// 		if _, ok := treeMap[fullpath]; ok {
-	// 			continue
-	// 		}
-	// 		treeMap[fullpath] = &Tree{Name: s}
-	// 		treeMap[parentpath].Children = append(treeMap[parentpath].Children, treeMap[fullpath])
-	// 	}
-	// }
-
-	// var treeView func(*Tree, string)
-	// treeLinkChar := "│   "
-	// treeMidChar := "├── "
-	// treeEndChar := "└── "
-	// treeAfterEndChar := "    "
-
-	// treeView = func(t *Tree, prefix string) {
-	// 	for i, st := range t.Children {
-	// 		switch i {
-	// 		case len(t.Children) - 1:
-	// 			fmt.Println(prefix + treeEndChar + st.Name)
-	// 			treeView(st, prefix+treeAfterEndChar)
-	// 		case 0:
-	// 			fmt.Println(prefix + treeMidChar + st.Name)
-	// 			treeView(st, prefix+treeLinkChar)
-	// 		default:
-	// 			fmt.Println(prefix + treeMidChar + st.Name)
-	// 			treeView(st, prefix+treeLinkChar)
-	// 		}
-	// 	}
-	// }
-
-	// fmt.Println(treeMap[""].Name)
-	// treeView(treeMap[""], "")
-
 	return nil
 }