mirror of
https://github.com/MetaCubeX/mihomo.git
synced 2024-08-26 11:52:32 +00:00
45 lines
906 B
Go
45 lines
906 B
Go
package convert
|
|
|
|
import (
|
|
"encoding/base64"
|
|
"strings"
|
|
)
|
|
|
|
var (
|
|
encRaw = base64.RawStdEncoding
|
|
enc = base64.StdEncoding
|
|
)
|
|
|
|
// DecodeBase64 try to decode content from the given bytes,
|
|
// which can be in base64.RawStdEncoding, base64.StdEncoding or just plaintext.
|
|
func DecodeBase64(buf []byte) []byte {
|
|
result, err := tryDecodeBase64(buf)
|
|
if err != nil {
|
|
return buf
|
|
}
|
|
return result
|
|
}
|
|
|
|
func tryDecodeBase64(buf []byte) ([]byte, error) {
|
|
dBuf := make([]byte, encRaw.DecodedLen(len(buf)))
|
|
n, err := encRaw.Decode(dBuf, buf)
|
|
if err != nil {
|
|
n, err = enc.Decode(dBuf, buf)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return dBuf[:n], nil
|
|
}
|
|
|
|
func urlSafe(data string) string {
|
|
return strings.NewReplacer("+", "-", "/", "_").Replace(data)
|
|
}
|
|
|
|
func decodeUrlSafe(data string) string {
|
|
dcBuf, err := base64.RawURLEncoding.DecodeString(data)
|
|
if err != nil {
|
|
return ""
|
|
}
|
|
return string(dcBuf)
|
|
}
|