Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/k8s.io/apimachinery/pkg/util/validation/field/path.go b/vendor/k8s.io/apimachinery/pkg/util/validation/field/path.go
new file mode 100644
index 0000000..2efc8ee
--- /dev/null
+++ b/vendor/k8s.io/apimachinery/pkg/util/validation/field/path.go
@@ -0,0 +1,91 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package field
+
+import (
+ "bytes"
+ "fmt"
+ "strconv"
+)
+
+// Path represents the path from some root to a particular field.
+type Path struct {
+ name string // the name of this field or "" if this is an index
+ index string // if name == "", this is a subscript (index or map key) of the previous element
+ parent *Path // nil if this is the root element
+}
+
+// NewPath creates a root Path object.
+func NewPath(name string, moreNames ...string) *Path {
+ r := &Path{name: name, parent: nil}
+ for _, anotherName := range moreNames {
+ r = &Path{name: anotherName, parent: r}
+ }
+ return r
+}
+
+// Root returns the root element of this Path.
+func (p *Path) Root() *Path {
+ for ; p.parent != nil; p = p.parent {
+ // Do nothing.
+ }
+ return p
+}
+
+// Child creates a new Path that is a child of the method receiver.
+func (p *Path) Child(name string, moreNames ...string) *Path {
+ r := NewPath(name, moreNames...)
+ r.Root().parent = p
+ return r
+}
+
+// Index indicates that the previous Path is to be subscripted by an int.
+// This sets the same underlying value as Key.
+func (p *Path) Index(index int) *Path {
+ return &Path{index: strconv.Itoa(index), parent: p}
+}
+
+// Key indicates that the previous Path is to be subscripted by a string.
+// This sets the same underlying value as Index.
+func (p *Path) Key(key string) *Path {
+ return &Path{index: key, parent: p}
+}
+
+// String produces a string representation of the Path.
+func (p *Path) String() string {
+ // make a slice to iterate
+ elems := []*Path{}
+ for ; p != nil; p = p.parent {
+ elems = append(elems, p)
+ }
+
+ // iterate, but it has to be backwards
+ buf := bytes.NewBuffer(nil)
+ for i := range elems {
+ p := elems[len(elems)-1-i]
+ if p.parent != nil && len(p.name) > 0 {
+ // This is either the root or it is a subscript.
+ buf.WriteString(".")
+ }
+ if len(p.name) > 0 {
+ buf.WriteString(p.name)
+ } else {
+ fmt.Fprintf(buf, "[%s]", p.index)
+ }
+ }
+ return buf.String()
+}