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// Copyright (C) 2023 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package jsonutil
import (
"bytes"
"fmt"
"io"
"git.lukeshu.com/go/lowmemjson"
"git.lukeshu.com/btrfs-progs-ng/lib/binstruct"
"git.lukeshu.com/btrfs-progs-ng/lib/textui"
)
type Binary[T any] struct {
Val T
}
var (
_ lowmemjson.Encodable = Binary[int]{}
_ lowmemjson.Decodable = (*Binary[int])(nil)
)
func (o Binary[T]) EncodeJSON(w io.Writer) error {
bs, err := binstruct.Marshal(o.Val)
if err != nil {
return err
}
return EncodeSplitHexString(w, bs, textui.Tunable(80))
}
func (o *Binary[T]) DecodeJSON(r io.RuneScanner) error {
var buf bytes.Buffer
if err := DecodeSplitHexString(r, &buf); err != nil {
return err
}
n, err := binstruct.Unmarshal(buf.Bytes(), &o.Val)
if err != nil {
return err
}
if n < buf.Len() {
return fmt.Errorf("%d bytes of garbage after value", n-buf.Len())
}
return nil
}
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