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base64.go
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base64.go
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package base64
import (
"encoding/base64"
"github.com/Shopify/go-lua"
)
func Open(l *lua.State) {
base64Open := func(l *lua.State) int {
lua.NewLibrary(l, base64Library)
return 1
}
lua.Require(l, "encoding/base64", base64Open, false)
l.Pop(1)
}
var base64Library = []lua.RegistryFunction{
{Name: "encode", Function: encode},
{Name: "decode", Function: decode},
{Name: "url_encode", Function: urlEncode},
{Name: "url_decode", Function: urlDecode},
}
func encode(l *lua.State) int {
data := lua.CheckString(l, 1)
l.PushString(base64.StdEncoding.EncodeToString([]byte(data)))
return 1
}
func decode(l *lua.State) int {
data := lua.CheckString(l, 1)
decoded, err := base64.StdEncoding.DecodeString(data)
if err != nil {
lua.Errorf(l, err.Error())
panic("unreachable")
}
l.PushString(string(decoded))
return 1
}
func urlEncode(l *lua.State) int {
data := lua.CheckString(l, 1)
l.PushString(base64.RawURLEncoding.EncodeToString([]byte(data)))
return 1
}
func urlDecode(l *lua.State) int {
data := lua.CheckString(l, 1)
decoded, err := base64.RawURLEncoding.DecodeString(data)
if err != nil {
lua.Errorf(l, err.Error())
panic("unreachable")
}
l.PushString(string(decoded))
return 1
}