Sansui233_proxypool/pkg/tool/base64.go

package tool

import (
	"encoding/base64"
)

func Base64DecodeString(src string) (dst string, err error) {
	if src == "" {
		return "", nil
	}
	var dstbytes []byte
	dstbytes, err = base64.RawURLEncoding.DecodeString(src)

	if err != nil {
		dstbytes, err = base64.RawStdEncoding.DecodeString(src)
	}
	if err != nil {
		dstbytes, err = base64.StdEncoding.DecodeString(src)
	}
	if err != nil {
		dstbytes, err = base64.URLEncoding.DecodeString(src)
	}
	if err != nil {
		return "", err
	}
	dst = string(dstbytes)
	return
}