| /* |
| Copyright © 2020 Hoshea Jiang <hoshea@apache.org> |
| |
| 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 util |
| |
| import ( |
| "strings" |
| ) |
| |
| func InStrSliceMapKeyFunc(strs []string) func(string) bool { |
| set := make(map[string]struct{}) |
| |
| for _, e := range strs { |
| set[e] = struct{}{} |
| } |
| |
| return func(s string) bool { |
| _, ok := set[s] |
| return ok |
| } |
| } |
| |
| func GetFileExtension(filename string) string { |
| i := strings.LastIndex(filename, ".") |
| if i != -1 { |
| if i+1 < len(filename) { |
| return filename[i+1:] |
| } |
| } |
| return "" |
| } |