Update kubectl kustomize to kyaml/v0.13.9, cmd/config/v0.10.9, api/v0.12.1, kustomize/v4.5.7 (#111606)
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30
vendor/github.com/xlab/treeprint/README.md
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30
vendor/github.com/xlab/treeprint/README.md
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@@ -41,10 +41,11 @@ The utility will yield Unicode-friendly trees. The output is predictable and the
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## Use cases
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When you want to render a complex data structure:
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### When you want to render a complex data structure:
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```go
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func main() {
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// to add a custom root name use `treeprint.NewWithRoot()` instead
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tree := treeprint.New()
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// create a new branch in the root
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@@ -86,10 +87,11 @@ Will give you:
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└── outernode
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```
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Another case, when you have to make a tree where any leaf may have some meta-data (as `tree` is capable of it):
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### Another case, when you have to make a tree where any leaf may have some meta-data (as `tree` is capable of it):
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```go
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func main {
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// to add a custom root name use `treeprint.NewWithRoot()` instead
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tree := treeprint.New()
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tree.AddNode("Dockerfile")
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@@ -122,6 +124,30 @@ Output:
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└── [122K] testtool.a
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```
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### Iterating over the tree nodes
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```go
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tree := New()
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one := tree.AddBranch("one")
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one.AddNode("one-subnode1").AddNode("one-subnode2")
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one.AddBranch("two").AddNode("two-subnode1").AddNode("two-subnode2").
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AddBranch("three").AddNode("three-subnode1").AddNode("three-subnode2")
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tree.AddNode("outernode")
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// if you need to iterate over the whole tree
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// call `VisitAll` from your top root node.
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tree.VisitAll(func(item *node) {
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if len(item.Nodes) > 0 {
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// branch nodes
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fmt.Println(item.Value) // will output one, two, three
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} else {
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// leaf nodes
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fmt.Println(item.Value) // will output one-*, two-*, three-* and outernode
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}
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})
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```
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Yay! So it works.
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## License
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117
vendor/github.com/xlab/treeprint/treeprint.go
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117
vendor/github.com/xlab/treeprint/treeprint.go
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@@ -6,11 +6,18 @@ import (
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"fmt"
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"io"
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"reflect"
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"strings"
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)
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// Value defines any value
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type Value interface{}
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// MetaValue defines any meta value
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type MetaValue interface{}
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// NodeVisitor function type for iterating over nodes
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type NodeVisitor func(item *node)
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// Tree represents a tree structure with leaf-nodes and branch-nodes.
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type Tree interface {
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// AddNode adds a new node to a branch.
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@@ -39,6 +46,11 @@ type Tree interface {
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SetValue(value Value)
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SetMetaValue(meta MetaValue)
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// VisitAll iterates over the tree, branches and nodes.
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// If need to iterate over the whole tree, use the root node.
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// Note this method uses a breadth-first approach.
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VisitAll(fn NodeVisitor)
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}
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type node struct {
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@@ -50,8 +62,10 @@ type node struct {
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func (n *node) FindLastNode() Tree {
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ns := n.Nodes
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n = ns[len(ns)-1]
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return n
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if len(ns) == 0 {
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return nil
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}
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return ns[len(ns)-1]
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}
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func (n *node) AddNode(v Value) Tree {
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@@ -59,9 +73,6 @@ func (n *node) AddNode(v Value) Tree {
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Root: n,
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Value: v,
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})
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if n.Root != nil {
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return n.Root
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}
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return n
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}
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@@ -71,14 +82,12 @@ func (n *node) AddMetaNode(meta MetaValue, v Value) Tree {
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Meta: meta,
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Value: v,
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})
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if n.Root != nil {
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return n.Root
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}
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return n
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}
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func (n *node) AddBranch(v Value) Tree {
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branch := &node{
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Root: n,
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Value: v,
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}
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n.Nodes = append(n.Nodes, branch)
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@@ -87,6 +96,7 @@ func (n *node) AddBranch(v Value) Tree {
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func (n *node) AddMetaBranch(meta MetaValue, v Value) Tree {
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branch := &node{
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Root: n,
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Meta: meta,
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Value: v,
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}
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@@ -131,7 +141,7 @@ func (n *node) Bytes() []byte {
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if n.Meta != nil {
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buf.WriteString(fmt.Sprintf("[%v] %v", n.Meta, n.Value))
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} else {
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buf.WriteString(fmt.Sprintf("%v",n.Value))
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buf.WriteString(fmt.Sprintf("%v", n.Value))
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}
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buf.WriteByte('\n')
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} else {
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@@ -140,7 +150,7 @@ func (n *node) Bytes() []byte {
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edge = EdgeTypeEnd
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levelsEnded = append(levelsEnded, level)
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}
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printValues(buf, 0, levelsEnded, edge, n.Meta, n.Value)
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printValues(buf, 0, levelsEnded, edge, n)
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}
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if len(n.Nodes) > 0 {
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printNodes(buf, level, levelsEnded, n.Nodes)
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@@ -152,14 +162,25 @@ func (n *node) String() string {
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return string(n.Bytes())
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}
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func (n *node) SetValue(value Value){
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func (n *node) SetValue(value Value) {
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n.Value = value
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}
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func (n *node) SetMetaValue(meta MetaValue){
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func (n *node) SetMetaValue(meta MetaValue) {
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n.Meta = meta
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}
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func (n *node) VisitAll(fn NodeVisitor) {
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for _, node := range n.Nodes {
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fn(node)
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if len(node.Nodes) > 0 {
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node.VisitAll(fn)
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continue
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}
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}
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}
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func printNodes(wr io.Writer,
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level int, levelsEnded []int, nodes []*node) {
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@@ -169,7 +190,7 @@ func printNodes(wr io.Writer,
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levelsEnded = append(levelsEnded, level)
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edge = EdgeTypeEnd
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}
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printValues(wr, level, levelsEnded, edge, node.Meta, node.Value)
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printValues(wr, level, levelsEnded, edge, node)
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if len(node.Nodes) > 0 {
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printNodes(wr, level+1, levelsEnded, node.Nodes)
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}
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@@ -177,15 +198,19 @@ func printNodes(wr io.Writer,
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}
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func printValues(wr io.Writer,
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level int, levelsEnded []int, edge EdgeType, meta MetaValue, val Value) {
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level int, levelsEnded []int, edge EdgeType, node *node) {
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for i := 0; i < level; i++ {
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if isEnded(levelsEnded, i) {
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fmt.Fprint(wr, " ")
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fmt.Fprint(wr, strings.Repeat(" ", IndentSize+1))
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continue
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}
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fmt.Fprintf(wr, "%s ", EdgeTypeLink)
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fmt.Fprintf(wr, "%s%s", EdgeTypeLink, strings.Repeat(" ", IndentSize))
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}
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val := renderValue(level, node)
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meta := node.Meta
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if meta != nil {
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fmt.Fprintf(wr, "%s [%v] %v\n", edge, meta, val)
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return
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@@ -202,14 +227,68 @@ func isEnded(levelsEnded []int, level int) bool {
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return false
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}
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func renderValue(level int, node *node) Value {
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lines := strings.Split(fmt.Sprintf("%v", node.Value), "\n")
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// If value does not contain multiple lines, return itself.
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if len(lines) < 2 {
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return node.Value
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}
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// If value contains multiple lines,
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// generate a padding and prefix each line with it.
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pad := padding(level, node)
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for i := 1; i < len(lines); i++ {
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lines[i] = fmt.Sprintf("%s%s", pad, lines[i])
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}
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return strings.Join(lines, "\n")
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}
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// padding returns a padding for the multiline values with correctly placed link edges.
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// It is generated by traversing the tree upwards (from leaf to the root of the tree)
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// and, on each level, checking if the node the last one of its siblings.
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// If a node is the last one, the padding on that level should be empty (there's nothing to link to below it).
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// If a node is not the last one, the padding on that level should be the link edge so the sibling below is correctly connected.
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func padding(level int, node *node) string {
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links := make([]string, level+1)
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for node.Root != nil {
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if isLast(node) {
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links[level] = strings.Repeat(" ", IndentSize+1)
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} else {
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links[level] = fmt.Sprintf("%s%s", EdgeTypeLink, strings.Repeat(" ", IndentSize))
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}
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level--
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node = node.Root
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}
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return strings.Join(links, "")
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}
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// isLast checks if the node is the last one in the slice of its parent children
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func isLast(n *node) bool {
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return n == n.Root.FindLastNode()
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}
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type EdgeType string
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var (
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EdgeTypeLink EdgeType = "│"
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EdgeTypeMid EdgeType = "├──"
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EdgeTypeEnd EdgeType = "└──"
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EdgeTypeLink EdgeType = "│"
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EdgeTypeMid EdgeType = "├──"
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EdgeTypeEnd EdgeType = "└──"
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)
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// IndentSize is the number of spaces per tree level.
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var IndentSize = 3
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// New Generates new tree
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func New() Tree {
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return &node{Value: "."}
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}
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// NewWithRoot Generates new tree with the given root value
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func NewWithRoot(root Value) Tree {
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return &node{Value: root}
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}
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