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author | Matthew Heon <matthew.heon@gmail.com> | 2017-11-01 11:24:59 -0400 |
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committer | Matthew Heon <matthew.heon@gmail.com> | 2017-11-01 11:24:59 -0400 |
commit | a031b83a09a8628435317a03f199cdc18b78262f (patch) | |
tree | bc017a96769ce6de33745b8b0b1304ccf38e9df0 /vendor/k8s.io/apimachinery/pkg/util/validation/field/path.go | |
parent | 2b74391cd5281f6fdf391ff8ad50fd1490f6bf89 (diff) | |
download | podman-a031b83a09a8628435317a03f199cdc18b78262f.tar.gz podman-a031b83a09a8628435317a03f199cdc18b78262f.tar.bz2 podman-a031b83a09a8628435317a03f199cdc18b78262f.zip |
Initial checkin from CRI-O repo
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Diffstat (limited to 'vendor/k8s.io/apimachinery/pkg/util/validation/field/path.go')
-rw-r--r-- | vendor/k8s.io/apimachinery/pkg/util/validation/field/path.go | 91 |
1 files changed, 91 insertions, 0 deletions
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 000000000..2efc8eec7 --- /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() +} |