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package pgproto3
import (
"bytes"
"encoding/json"
"github.com/jackc/pgio"
)
type Query struct {
String string
}
// Frontend identifies this message as sendable by a PostgreSQL frontend.
func (*Query) Frontend() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *Query) Decode(src []byte) error {
i := bytes.IndexByte(src, 0)
if i != len(src)-1 {
return &invalidMessageFormatErr{messageType: "Query"}
}
dst.String = string(src[:i])
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *Query) Encode(dst []byte) []byte {
dst = append(dst, 'Q')
dst = pgio.AppendInt32(dst, int32(4+len(src.String)+1))
dst = append(dst, src.String...)
dst = append(dst, 0)
return dst
}
// MarshalJSON implements encoding/json.Marshaler.
func (src Query) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
String string
}{
Type: "Query",
String: src.String,
})
}
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