-
Notifications
You must be signed in to change notification settings - Fork 1
/
transform.go
98 lines (78 loc) · 2.48 KB
/
transform.go
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
// MIT License
//
// Copyright (c) 2021 Iván Szkiba
//
// 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 configen
import (
"fmt"
)
func transform(data []byte, inFormat string) ([]byte, string, error) {
parser, ok := parsers[inFormat]
if !ok {
return data, inFormat, nil
}
v := Context{}
if err := parser(data, &v); err != nil {
return nil, "", err
}
outFormat, ok := v.get(propFormat)
if !ok {
return data, inFormat, nil
}
delete(v, propFormat)
schema, ok := v.get(propSchema)
if ok && outFormat != "json" {
delete(v, propSchema)
}
b, err := v.marshal(outFormat)
if err != nil {
return nil, "", err
}
if fn, ok := headerFuncs[outFormat]; ok {
b = fn(b, schema)
}
return b, outFormat, nil
}
type headerFunc func([]byte, string) []byte
func headerYAML(data []byte, schema string) []byte {
first := []byte(headerLine)
second := []byte{}
if schema != "" {
second = []byte(fmt.Sprintf("# yaml-language-server: $schema=%s\n", schema))
}
buff := make([]byte, len(data)+len(first)+len(second))
copy(buff, first)
copy(buff[len(first):], second)
copy(buff[len(first)+len(second):], data)
return buff
}
func headerTOML(data []byte, _ string) []byte {
line := []byte(headerLine)
buff := make([]byte, len(data)+len(line))
copy(buff, line)
copy(buff[len(line):], data)
return buff
}
const headerLine = "# File generated by configen; DO NOT EDIT.\n"
var headerFuncs = map[string]headerFunc{
"yaml": headerYAML,
"yml": headerYAML,
"toml": headerTOML,
}