maeneko
59e076c1de
- internal/jsjson: JSON.stringify-compatible encoder and order-preserving decoder, tested against fixtures produced by Node itself - internal/ctrl: awg-ctrl in Go (params, vpn:// keys, users, peers, sync, 3.1 upgrade, CAKE shaping, metrics, monitor job, Express-compatible HTTP layer) - internal/iauth, internal/logx: internal Ed25519 tokens and logging - tools/diffbench: Docker bench with stubbed awg/ip/tc/nft that runs one scenario against the TS and Go implementations for comparison
87 lines
2.0 KiB
Go
87 lines
2.0 KiB
Go
package jsjson
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import (
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"bytes"
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"encoding/json"
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"errors"
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"io"
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)
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// Decode разбирает JSON с сохранением порядка ключей: объекты — Object, массивы —
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// []any, числа — float64, как JSON.parse. Нужен, чтобы JSON.stringify(JSON.parse(x))
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// воспроизводился точно (например, сохранённый профиль сервера с ключами awg).
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func Decode(data []byte) (any, error) {
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d := json.NewDecoder(bytes.NewReader(data))
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d.UseNumber()
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v, err := decodeValue(d)
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if err != nil {
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return nil, err
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}
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if _, err := d.Token(); err != io.EOF {
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return nil, errors.New("jsjson: trailing data")
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}
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return v, nil
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}
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func decodeValue(d *json.Decoder) (any, error) {
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t, err := d.Token()
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if err != nil {
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return nil, err
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}
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switch x := t.(type) {
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case json.Delim:
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switch x {
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case '{':
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obj := Object{}
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for d.More() {
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kt, err := d.Token()
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if err != nil {
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return nil, err
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}
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key, ok := kt.(string)
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if !ok {
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return nil, errors.New("jsjson: object key is not a string")
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}
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val, err := decodeValue(d)
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if err != nil {
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return nil, err
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}
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// повторный ключ в JS перезаписывает значение, оставаясь на первом месте
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replaced := false
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for i := range obj {
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if obj[i].Key == key {
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obj[i].Val = val
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replaced = true
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break
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}
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}
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if !replaced {
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obj = append(obj, KV{key, val})
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}
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}
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if _, err := d.Token(); err != nil {
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return nil, err
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}
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return obj, nil
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case '[':
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arr := []any{}
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for d.More() {
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val, err := decodeValue(d)
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if err != nil {
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return nil, err
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}
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arr = append(arr, val)
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}
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if _, err := d.Token(); err != nil {
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return nil, err
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}
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return arr, nil
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}
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return nil, errors.New("jsjson: unexpected delimiter")
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case json.Number:
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return x.Float64()
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default:
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return x, nil // string, bool, nil
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}
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}
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