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-rw-r--r--vendor/github.com/minio/minio-go/v7/pkg/set/stringset.go200
1 files changed, 200 insertions, 0 deletions
diff --git a/vendor/github.com/minio/minio-go/v7/pkg/set/stringset.go b/vendor/github.com/minio/minio-go/v7/pkg/set/stringset.go
new file mode 100644
index 0000000..c35e58e
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+++ b/vendor/github.com/minio/minio-go/v7/pkg/set/stringset.go
@@ -0,0 +1,200 @@
1/*
2 * MinIO Go Library for Amazon S3 Compatible Cloud Storage
3 * Copyright 2015-2017 MinIO, Inc.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package set
19
20import (
21 "fmt"
22 "sort"
23
24 jsoniter "github.com/json-iterator/go"
25)
26
27// StringSet - uses map as set of strings.
28type StringSet map[string]struct{}
29
30var json = jsoniter.ConfigCompatibleWithStandardLibrary
31
32// ToSlice - returns StringSet as string slice.
33func (set StringSet) ToSlice() []string {
34 keys := make([]string, 0, len(set))
35 for k := range set {
36 keys = append(keys, k)
37 }
38 sort.Strings(keys)
39 return keys
40}
41
42// IsEmpty - returns whether the set is empty or not.
43func (set StringSet) IsEmpty() bool {
44 return len(set) == 0
45}
46
47// Add - adds string to the set.
48func (set StringSet) Add(s string) {
49 set[s] = struct{}{}
50}
51
52// Remove - removes string in the set. It does nothing if string does not exist in the set.
53func (set StringSet) Remove(s string) {
54 delete(set, s)
55}
56
57// Contains - checks if string is in the set.
58func (set StringSet) Contains(s string) bool {
59 _, ok := set[s]
60 return ok
61}
62
63// FuncMatch - returns new set containing each value who passes match function.
64// A 'matchFn' should accept element in a set as first argument and
65// 'matchString' as second argument. The function can do any logic to
66// compare both the arguments and should return true to accept element in
67// a set to include in output set else the element is ignored.
68func (set StringSet) FuncMatch(matchFn func(string, string) bool, matchString string) StringSet {
69 nset := NewStringSet()
70 for k := range set {
71 if matchFn(k, matchString) {
72 nset.Add(k)
73 }
74 }
75 return nset
76}
77
78// ApplyFunc - returns new set containing each value processed by 'applyFn'.
79// A 'applyFn' should accept element in a set as a argument and return
80// a processed string. The function can do any logic to return a processed
81// string.
82func (set StringSet) ApplyFunc(applyFn func(string) string) StringSet {
83 nset := NewStringSet()
84 for k := range set {
85 nset.Add(applyFn(k))
86 }
87 return nset
88}
89
90// Equals - checks whether given set is equal to current set or not.
91func (set StringSet) Equals(sset StringSet) bool {
92 // If length of set is not equal to length of given set, the
93 // set is not equal to given set.
94 if len(set) != len(sset) {
95 return false
96 }
97
98 // As both sets are equal in length, check each elements are equal.
99 for k := range set {
100 if _, ok := sset[k]; !ok {
101 return false
102 }
103 }
104
105 return true
106}
107
108// Intersection - returns the intersection with given set as new set.
109func (set StringSet) Intersection(sset StringSet) StringSet {
110 nset := NewStringSet()
111 for k := range set {
112 if _, ok := sset[k]; ok {
113 nset.Add(k)
114 }
115 }
116
117 return nset
118}
119
120// Difference - returns the difference with given set as new set.
121func (set StringSet) Difference(sset StringSet) StringSet {
122 nset := NewStringSet()
123 for k := range set {
124 if _, ok := sset[k]; !ok {
125 nset.Add(k)
126 }
127 }
128
129 return nset
130}
131
132// Union - returns the union with given set as new set.
133func (set StringSet) Union(sset StringSet) StringSet {
134 nset := NewStringSet()
135 for k := range set {
136 nset.Add(k)
137 }
138
139 for k := range sset {
140 nset.Add(k)
141 }
142
143 return nset
144}
145
146// MarshalJSON - converts to JSON data.
147func (set StringSet) MarshalJSON() ([]byte, error) {
148 return json.Marshal(set.ToSlice())
149}
150
151// UnmarshalJSON - parses JSON data and creates new set with it.
152// If 'data' contains JSON string array, the set contains each string.
153// If 'data' contains JSON string, the set contains the string as one element.
154// If 'data' contains Other JSON types, JSON parse error is returned.
155func (set *StringSet) UnmarshalJSON(data []byte) error {
156 sl := []string{}
157 var err error
158 if err = json.Unmarshal(data, &sl); err == nil {
159 *set = make(StringSet)
160 for _, s := range sl {
161 set.Add(s)
162 }
163 } else {
164 var s string
165 if err = json.Unmarshal(data, &s); err == nil {
166 *set = make(StringSet)
167 set.Add(s)
168 }
169 }
170
171 return err
172}
173
174// String - returns printable string of the set.
175func (set StringSet) String() string {
176 return fmt.Sprintf("%s", set.ToSlice())
177}
178
179// NewStringSet - creates new string set.
180func NewStringSet() StringSet {
181 return make(StringSet)
182}
183
184// CreateStringSet - creates new string set with given string values.
185func CreateStringSet(sl ...string) StringSet {
186 set := make(StringSet)
187 for _, k := range sl {
188 set.Add(k)
189 }
190 return set
191}
192
193// CopyStringSet - returns copy of given set.
194func CopyStringSet(set StringSet) StringSet {
195 nset := NewStringSet()
196 for k, v := range set {
197 nset[k] = v
198 }
199 return nset
200}