109 lines
2.2 KiB
Go
109 lines
2.2 KiB
Go
package write
|
|
|
|
import (
|
|
"encoding/json"
|
|
"unicode"
|
|
"unicode/utf8"
|
|
|
|
"github.com/hashicorp/hcl"
|
|
)
|
|
|
|
// hclDecode is a modified version of hcl.Decode just for the super general
|
|
// purposes here. There's some strange bug in how hcl.Decode decodes json where
|
|
//
|
|
// { "sub" : { "v1" : { "field" : "value1" }, "v2" : { "field" : "value2" } } }
|
|
//
|
|
// hcl.Decode-s into:
|
|
//
|
|
// map[string]interface {}{
|
|
// "sub":[]map[string]interface {}{
|
|
// map[string]interface {}{
|
|
// "v1":[]map[string]interface {}{
|
|
// map[string]interface {}{
|
|
// "field":"value1"
|
|
// }
|
|
// }
|
|
// },
|
|
// map[string]interface {}{
|
|
// "v2":[]map[string]interface {}{
|
|
// map[string]interface {}{
|
|
// "field":"value2"
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
//
|
|
// but json.Unmarshal-s into the more expected:
|
|
//
|
|
// map[string]interface {}{
|
|
// "sub":map[string]interface {}{
|
|
// "v1":map[string]interface {}{
|
|
// "field":"value1"
|
|
// },
|
|
// "v2":map[string]interface {}{
|
|
// "field":"value2"
|
|
// }
|
|
// }
|
|
// }
|
|
//
|
|
// The strange part is that the following HCL:
|
|
//
|
|
// sub { "v1" = { field = "value1" }, "v2" = { field = "value2" } }
|
|
//
|
|
// hcl.Decode-s into:
|
|
//
|
|
// map[string]interface {}{
|
|
// "sub":[]map[string]interface {}{
|
|
// map[string]interface {}{
|
|
// "v1":[]map[string]interface {}{
|
|
// map[string]interface {}{
|
|
// "field":"value1"
|
|
// }
|
|
// },
|
|
// "v2":[]map[string]interface {}{
|
|
// map[string]interface {}{
|
|
// "field":"value2"
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
//
|
|
// Which is the "correct" value assuming you did the patch-slice-of-maps correction.
|
|
//
|
|
// Given that HCLv1 is basically frozen and the HCL part of it is fine instead
|
|
// of trying to track down a weird bug we'll bypass the weird JSON decoder and just use
|
|
// the stdlib one.
|
|
func hclDecode(out interface{}, in string) error {
|
|
data := []byte(in)
|
|
if isHCL(data) {
|
|
return hcl.Decode(out, in)
|
|
}
|
|
|
|
return json.Unmarshal(data, out)
|
|
}
|
|
|
|
// this is an inlined variant of hcl.lexMode()
|
|
func isHCL(v []byte) bool {
|
|
var (
|
|
r rune
|
|
w int
|
|
offset int
|
|
)
|
|
|
|
for {
|
|
r, w = utf8.DecodeRune(v[offset:])
|
|
offset += w
|
|
if unicode.IsSpace(r) {
|
|
continue
|
|
}
|
|
if r == '{' {
|
|
return false
|
|
}
|
|
break
|
|
}
|
|
|
|
return true
|
|
}
|