79 lines
1.8 KiB
Go
79 lines
1.8 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package unstructpath
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import (
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p "k8s.io/kubectl/pkg/framework/predicates"
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)
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func filterSlice(ss SliceS, sf sliceFilter) InterfaceS {
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return &interfaceS{
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vf: &interfaceSliceFilter{
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ss: ss,
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sf: sf,
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},
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}
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}
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// This is a Slice-to-Interface filter.
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type sliceFilter interface {
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SelectFrom(...[]interface{}) []interface{}
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}
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type sliceAtPFilter struct {
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ip p.Number
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}
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func (f sliceAtPFilter) SelectFrom(slices ...[]interface{}) []interface{} {
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interfaces := []interface{}{}
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for _, slice := range slices {
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for i := range slice {
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if !f.ip.Match(float64(i)) {
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continue
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}
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interfaces = append(interfaces, slice[i])
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}
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}
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return interfaces
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}
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type sliceLastFilter struct{}
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func (f sliceLastFilter) SelectFrom(slices ...[]interface{}) []interface{} {
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interfaces := []interface{}{}
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for _, slice := range slices {
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if len(slice) == 0 {
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continue
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}
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interfaces = append(interfaces, slice[len(slice)-1])
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}
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return interfaces
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}
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type sliceAllFilter struct{}
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func (sliceAllFilter) SelectFrom(slices ...[]interface{}) []interface{} {
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interfaces := []interface{}{}
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for _, slice := range slices {
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for _, v := range slice {
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interfaces = append(interfaces, All().SelectFrom(v)...)
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}
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}
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return interfaces
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}
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