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package dotenv
import (
"bytes"
"fmt"
"sort"
"strings"
"github.com/subosito/gotenv"
)
const keyDelimiter = "_"
// Codec implements the encoding.Encoder and encoding.Decoder interfaces for encoding data containing environment variables
// (commonly called as dotenv format).
type Codec struct{}
func (Codec) Encode(v map[string]interface{}) ([]byte, error) {
flattened := map[string]interface{}{}
flattened = flattenAndMergeMap(flattened, v, "", keyDelimiter)
keys := make([]string, 0, len(flattened))
for key := range flattened {
keys = append(keys, key)
}
sort.Strings(keys)
var buf bytes.Buffer
for _, key := range keys {
_, err := buf.WriteString(fmt.Sprintf("%v=%v\n", strings.ToUpper(key), flattened[key]))
if err != nil {
return nil, err
}
}
return buf.Bytes(), nil
}
func (Codec) Decode(b []byte, v map[string]interface{}) error {
var buf bytes.Buffer
_, err := buf.Write(b)
if err != nil {
return err
}
env, err := gotenv.StrictParse(&buf)
if err != nil {
return err
}
for key, value := range env {
v[key] = value
}
return nil
}
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