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
|
// Copyright 2024 Google LLC
//
// 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 hotfix
import (
"bufio"
"bytes"
"context"
"strings"
"github.com/google/yamlfmt"
)
type directiveKey string
var contextDirectivesKey directiveKey = "directives"
type Directive struct {
line int
content string
}
func ContextWithDirectives(ctx context.Context, directives []Directive) context.Context {
return context.WithValue(ctx, contextDirectivesKey, directives)
}
func DirectivesFromContext(ctx context.Context) []Directive {
return ctx.Value(contextDirectivesKey).([]Directive)
}
func MakeFeatureStripDirectives(lineSepChar string) yamlfmt.Feature {
return yamlfmt.Feature{
Name: "Strip Directives",
BeforeAction: stripDirectivesFeature(lineSepChar),
AfterAction: restoreDirectivesFeature(lineSepChar),
}
}
func stripDirectivesFeature(lineSepChar string) yamlfmt.FeatureFunc {
return func(ctx context.Context, content []byte) (context.Context, []byte, error) {
directives := []Directive{}
reader := bytes.NewReader(content)
scanner := bufio.NewScanner(reader)
result := ""
currLine := 1
for scanner.Scan() {
line := scanner.Text()
if strings.HasPrefix(line, "%") {
directives = append(directives, Directive{
line: currLine,
content: line,
})
} else {
result += line + lineSepChar
}
currLine++
}
return ContextWithDirectives(ctx, directives), []byte(result), nil
}
}
func restoreDirectivesFeature(lineSepChar string) yamlfmt.FeatureFunc {
return func(ctx context.Context, content []byte) (context.Context, []byte, error) {
directives := DirectivesFromContext(ctx)
directiveIdx := 0
doneDirectives := directiveIdx == len(directives)
reader := bytes.NewReader(content)
scanner := bufio.NewScanner(reader)
result := ""
currLine := 1
for scanner.Scan() {
if !doneDirectives && currLine == directives[directiveIdx].line {
result += directives[directiveIdx].content + lineSepChar
currLine++
directiveIdx++
doneDirectives = directiveIdx == len(directives)
}
result += scanner.Text() + lineSepChar
currLine++
}
// Edge case: There technically can be a directive as the final line. This would be
// useless as far as I can tell so maybe yamlfmt should just remove it anyway LOL but
// no we'll keep it.
if !doneDirectives && currLine == directives[directiveIdx].line {
result += directives[directiveIdx].content + lineSepChar
}
return ctx, []byte(result), nil
}
}
|
