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stringset.go
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stringset.go
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/*
* Copyright 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
*
* 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
*
*/
package utils
import (
"fmt"
"reflect"
"strings"
)
type StringSet map[string]struct{}
func NewStringSet(a ...string) StringSet {
return StringSet{}.Add(a...)
}
func NewStringSetByArray(a []string) StringSet {
s := StringSet{}
if a != nil {
s.Add(a...)
}
return s
}
func NewStringSetBySets(sets ...StringSet) StringSet {
s := StringSet{}
for _, set := range sets {
for a := range set {
s.Add(a)
}
}
return s
}
func (this StringSet) String() string {
sep := ""
data := "["
for k := range this {
data = fmt.Sprintf("%s%s'%s'", data, sep, k)
sep = ", "
}
return data + "]"
}
func (this StringSet) Clear() {
for n := range this {
delete(this, n)
}
}
func (this StringSet) IsEmpty() bool {
return len(this) == 0
}
func (this StringSet) Contains(n string) bool {
_, ok := this[n]
return ok
}
func (this StringSet) Remove(n ...string) StringSet {
for _, p := range n {
delete(this, p)
}
return this
}
func (this StringSet) AddAll(n []string) StringSet {
return this.Add(n...)
}
func (this StringSet) Add(n ...string) StringSet {
for _, p := range n {
this[p] = struct{}{}
}
return this
}
func (this StringSet) AddSet(sets ...StringSet) StringSet {
for _, s := range sets {
for e := range s {
this.Add(e)
}
}
return this
}
func (this StringSet) RemoveSet(sets ...StringSet) StringSet {
for _, s := range sets {
for e := range s {
this.Remove(e)
}
}
return this
}
func (this StringSet) AddAllSplitted(n string) StringSet {
for _, p := range strings.Split(n, ",") {
this.Add(strings.ToLower(strings.TrimSpace(p)))
}
return this
}
func (this StringSet) Equals(set StringSet) bool {
for n := range set {
if !this.Contains(n) {
return false
}
}
for n := range this {
if !set.Contains(n) {
return false
}
}
return true
}
func (this StringSet) DiffFrom(set StringSet) (add, del StringSet) {
add = StringSet{}
del = StringSet{}
for n := range set {
if !this.Contains(n) {
add.Add(n)
}
}
for n := range this {
if !set.Contains(n) {
del.Add(n)
}
}
return
}
func (this StringSet) Copy() StringSet {
set := NewStringSet()
for n := range this {
set[n] = struct{}{}
}
return set
}
func (this StringSet) Intersect(o StringSet) StringSet {
set := NewStringSet()
for n := range this {
if o.Contains(n) {
set[n] = struct{}{}
}
}
return set
}
func (this StringSet) AsArray() []string {
a := []string{}
for n := range this {
a = append(a, n)
}
return a
}
func StringKeySet(anystringkeymap interface{}) StringSet {
ret := StringSet{}
if anystringkeymap == nil {
return ret
}
v := reflect.ValueOf(anystringkeymap)
for _, keyValue := range v.MapKeys() {
ret.Add(keyValue.Interface().(string))
}
return ret
}
func StringKeyArray(anystringkeymap interface{}) []string {
if anystringkeymap == nil {
return nil
}
v := reflect.ValueOf(anystringkeymap)
keys := v.MapKeys()
ret := make([]string, len(keys))
for i, keyValue := range keys {
ret[i] = keyValue.Interface().(string)
}
return ret
}
func StringValueSet(anystringvaluemap interface{}) StringSet {
v := reflect.ValueOf(anystringvaluemap)
ret := StringSet{}
for i := v.MapRange(); i.Next(); {
ret.Add(i.Value().Interface().(string))
}
return ret
}