woodpecker/shared/utils/strings.go

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// 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(src []string) []string {
m := make(map[string]struct{}, len(src))
dst := make([]string, 0, len(src))
for _, v := range src {
// Skip empty items
if len(v) == 0 {
continue
}
// Skip duplicates
if _, ok := m[v]; ok {
continue
}
m[v] = struct{}{}
dst = append(dst, v)
}
return dst
}
2022-03-09 00:44:08 +00:00
// 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
}