1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
// Copyright © 2020 The Homeport Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package ytbx
import (
yamlv3 "gopkg.in/yaml.v3"
)
// Delete removes the section identified by the path from the YAML structure
func Delete(node *yamlv3.Node, pathString string) (*yamlv3.Node, error) {
path, err := ParsePathString(pathString, node)
if err != nil {
return nil, err
}
switch node.Kind {
case yamlv3.DocumentNode:
return deletePath(node.Content[0], path)
default:
return deletePath(node, path)
}
}
func deletePath(node *yamlv3.Node, path Path) (*yamlv3.Node, error) {
parentPath := Path{
DocumentIdx: path.DocumentIdx,
PathElements: path.PathElements[:len(path.PathElements)-1],
}
parent, err := grabByPath(node, parentPath)
if err != nil {
return nil, err
}
var (
lastPathElement = path.PathElements[len(path.PathElements)-1]
deletedNode *yamlv3.Node = nil
)
switch parent.Kind {
case yamlv3.MappingNode:
var deleteIdx int
for i := 0; i < len(parent.Content); i += 2 {
k, v := parent.Content[i], parent.Content[i+1]
if k.Value == lastPathElement.Name {
deleteIdx = i
deletedNode = v
break
}
}
// delete the entry at delete index and the one after that as these two are
// the key (first entry) and the value (second entry)
parent.Content = append(
parent.Content[:deleteIdx],
parent.Content[deleteIdx+2:]...,
)
return deletedNode, nil
case yamlv3.SequenceNode:
var deleteIdx int
if lastPathElement.isSimpleListElement() {
deleteIdx = lastPathElement.Idx
} else {
deleteIdx, err = getIndexByIdentifierAndName(parent, lastPathElement.Key, lastPathElement.Name)
if err != nil {
return nil, err
}
}
deletedNode = parent.Content[deleteIdx]
// delete the entry that was identified by the deletion index, since it is a
// sequence (list), only one entry needs to be deleted
parent.Content = append(
parent.Content[:deleteIdx],
parent.Content[deleteIdx+1:]...,
)
return deletedNode, nil
}
return nil, nil
}
|
