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feat(dump): dump on a per-entry basis, using whichever encoding works. or force all into a specified type

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This commit is contained in:
Lewis Wynne 2025-11-06 23:41:56 +00:00
parent 571e692ea5
commit 86867a097b
1 changed files with 33 additions and 8 deletions
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41
cmd/dump.go
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@ -5,6 +5,7 @@ import (
"encoding/json"
"errors"
"fmt"
"unicode/utf8"
"github.com/dgraph-io/badger/v4"
"github.com/spf13/cobra"
@ -42,12 +43,14 @@ func dump(cmd *cobra.Command, args []string) error {
targetDB = "@" + dbName
}
encoding, err := cmd.Flags().GetString("encoding")
mode, err := cmd.Flags().GetString("encoding")
if err != nil {
return err
}
if encoding != "base64" && encoding != "text" {
return fmt.Errorf("unsupported encoding %q", encoding)
switch mode {
case "auto", "base64", "text":
default:
return fmt.Errorf("unsupported encoding %q", mode)
}
trans := TransactionArgs{
@ -64,12 +67,20 @@ func dump(cmd *cobra.Command, args []string) error {
key := item.KeyCopy(nil)
if err := item.Value(func(v []byte) error {
entry := dumpEntry{Key: string(key)}
switch encoding {
switch mode {
case "base64":
entry.Value = base64.StdEncoding.EncodeToString(v)
entry.Encoding = "base64"
encodeBase64(&entry, v)
case "text":
entry.Value = string(v)
if err := encodeText(&entry, key, v); err != nil {
return err
}
case "auto":
if utf8.Valid(v) {
entry.Encoding = "text"
entry.Value = string(v)
} else {
encodeBase64(&entry, v)
}
}
payload, err := json.Marshal(entry)
if err != nil {
@ -89,6 +100,20 @@ func dump(cmd *cobra.Command, args []string) error {
}
func init() {
dumpCmd.Flags().StringP("encoding", "e", "base64", "value encoding: base64 or text")
dumpCmd.Flags().StringP("encoding", "e", "auto", "value encoding: auto, base64, or text")
rootCmd.AddCommand(dumpCmd)
}
func encodeBase64(entry *dumpEntry, v []byte) {
entry.Value = base64.StdEncoding.EncodeToString(v)
entry.Encoding = "base64"
}
func encodeText(entry *dumpEntry, key []byte, v []byte) error {
if !utf8.Valid(v) {
return fmt.Errorf("key %q contains non-UTF8 data; use --encoding=auto or base64", key)
}
entry.Value = string(v)
entry.Encoding = "text"
return nil
}