woodpecker/shared/utils/strings.go
2022-03-09 01:44:08 +01:00

58 lines
1.4 KiB
Go

// Copyright 2022 Woodpecker 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 utils
// DedupStrings deduplicate string list, empty items are dropped
func DedupStrings(list []string) []string {
m := make(map[string]struct{}, len(list))
for i := range list {
if s := list[i]; len(s) > 0 {
m[list[i]] = struct{}{}
}
}
newList := make([]string, 0, len(m))
for k := range m {
newList = append(newList, k)
}
return newList
}
// EqualStringSlice compare two string slices if they have equal values independent of how they are sorted
func EqualStringSlice(l1, l2 []string) bool {
if len(l1) != len(l2) {
return false
}
m1 := sliceToCountMap(l1)
m2 := sliceToCountMap(l2)
for k, v := range m1 {
if m2[k] != v {
return false
}
}
return true
}
func sliceToCountMap(list []string) map[string]int {
m := make(map[string]int)
for i := range list {
m[list[i]]++
}
return m
}