102 lines
2.8 KiB
Go
102 lines
2.8 KiB
Go
/*
|
|
* Minimalist Object Storage, (C) 2015 Minio, Inc.
|
|
*
|
|
* 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 donut
|
|
|
|
import (
|
|
"bufio"
|
|
"bytes"
|
|
"sort"
|
|
"strings"
|
|
)
|
|
|
|
// Delimiter delims the string at delimiter
|
|
func Delimiter(object, delimiter string) string {
|
|
readBuffer := bytes.NewBufferString(object)
|
|
reader := bufio.NewReader(readBuffer)
|
|
stringReader := strings.NewReader(delimiter)
|
|
delimited, _ := stringReader.ReadByte()
|
|
delimitedStr, _ := reader.ReadString(delimited)
|
|
return delimitedStr
|
|
}
|
|
|
|
// RemoveDuplicates removes duplicate elements from a slice
|
|
func RemoveDuplicates(slice []string) []string {
|
|
newSlice := []string{}
|
|
seen := make(map[string]struct{})
|
|
for _, val := range slice {
|
|
if _, ok := seen[val]; !ok {
|
|
newSlice = append(newSlice, val)
|
|
seen[val] = struct{}{} // avoiding byte allocation
|
|
}
|
|
}
|
|
return newSlice
|
|
}
|
|
|
|
// TrimPrefix trims off a prefix string from all the elements in a given slice
|
|
func TrimPrefix(objects []string, prefix string) []string {
|
|
var results []string
|
|
for _, object := range objects {
|
|
results = append(results, strings.TrimPrefix(object, prefix))
|
|
}
|
|
return results
|
|
}
|
|
|
|
// HasNoDelimiter provides a new slice from an input slice which has elements without delimiter
|
|
func HasNoDelimiter(objects []string, delim string) []string {
|
|
var results []string
|
|
for _, object := range objects {
|
|
if !strings.Contains(object, delim) {
|
|
results = append(results, object)
|
|
}
|
|
}
|
|
return results
|
|
}
|
|
|
|
// HasDelimiter provides a new slice from an input slice which has elements with a delimiter
|
|
func HasDelimiter(objects []string, delim string) []string {
|
|
var results []string
|
|
for _, object := range objects {
|
|
if strings.Contains(object, delim) {
|
|
results = append(results, object)
|
|
}
|
|
}
|
|
return results
|
|
}
|
|
|
|
// SplitDelimiter provides a new slice from an input slice by splitting a delimiter
|
|
func SplitDelimiter(objects []string, delim string) []string {
|
|
var results []string
|
|
for _, object := range objects {
|
|
parts := strings.Split(object, delim)
|
|
results = append(results, parts[0]+delim)
|
|
}
|
|
return results
|
|
}
|
|
|
|
// SortU sort a slice in lexical order, removing duplicate elements
|
|
func SortU(objects []string) []string {
|
|
objectMap := make(map[string]string)
|
|
for _, v := range objects {
|
|
objectMap[v] = v
|
|
}
|
|
var results []string
|
|
for k := range objectMap {
|
|
results = append(results, k)
|
|
}
|
|
sort.Strings(results)
|
|
return results
|
|
}
|