mirror of https://github.com/kubernetes/kops.git
152 lines
3.0 KiB
Go
152 lines
3.0 KiB
Go
/*
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Copyright 2019 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 fi
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import (
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"encoding/json"
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"fmt"
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"reflect"
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"strconv"
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)
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// PtrTo returns a pointer to a copy of any value.
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func PtrTo[T any](v T) *T {
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return &v
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}
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// ValueOf returns the value of a pointer or its zero value
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func ValueOf[T any](v *T) T {
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if v == nil {
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return *new(T)
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}
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return *v
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}
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// StringSliceValue takes a slice of string pointers and returns a slice of strings
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func StringSliceValue(stringSlice []*string) []string {
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var newSlice []string
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for _, value := range stringSlice {
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if value != nil {
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newSlice = append(newSlice, *value)
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}
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}
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return newSlice
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}
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func IsNilOrEmpty(s *string) bool {
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if s == nil {
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return true
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}
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return *s == ""
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}
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// StringSlice is a helper that builds a []*string from a slice of strings
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func StringSlice(stringSlice []string) []*string {
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var newSlice []*string
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for i := range stringSlice {
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newSlice = append(newSlice, &stringSlice[i])
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}
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return newSlice
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}
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// ArrayContains is checking does array contain single word
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func ArrayContains(array []string, word string) bool {
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for _, item := range array {
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if item == word {
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return true
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}
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}
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return false
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}
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func DebugPrint(o interface{}) string {
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if o == nil {
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return "<nil>"
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}
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if resource, ok := o.(Resource); ok {
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if resource == nil {
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// Avoid go nil vs interface problems
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return "<nil>"
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}
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s, err := ResourceAsString(resource)
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if err != nil {
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return fmt.Sprintf("error converting resource to string: %v", err)
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}
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if len(s) >= 256 {
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s = s[:256] + "... (truncated)"
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}
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return s
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}
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v := reflect.ValueOf(o)
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if v.Kind() == reflect.Ptr {
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if v.IsNil() {
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return "<nil>"
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}
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v = v.Elem()
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}
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if !v.IsValid() {
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return "<?>"
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}
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o = v.Interface()
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if stringer, ok := o.(fmt.Stringer); ok {
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if stringer == nil {
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// Avoid go nil vs interface problems
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return "<nil>"
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}
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return stringer.String()
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}
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return fmt.Sprint(o)
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}
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func DebugAsJsonString(v interface{}) string {
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data, err := json.Marshal(v)
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if err != nil {
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return fmt.Sprintf("error marshaling: %v", err)
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}
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return string(data)
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}
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func DebugAsJsonStringIndent(v interface{}) string {
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data, err := json.MarshalIndent(v, "", " ")
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if err != nil {
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return fmt.Sprintf("error marshaling: %v", err)
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}
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return string(data)
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}
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func ToInt64(s *string) *int64 {
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if s == nil {
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return nil
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}
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v, err := strconv.ParseInt(*s, 10, 64)
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if err != nil {
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return nil
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}
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return &v
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}
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func ToString(v *int64) *string {
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if v == nil {
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return nil
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}
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s := strconv.FormatInt(*v, 10)
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return &s
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}
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