1 files changed, 96 insertions, 0 deletions
diff --git a/vendor/github.com/jackc/pgx/v5/pgproto3/copy_in_response.go b/vendor/github.com/jackc/pgx/v5/pgproto3/copy_in_response.go
new file mode 100644
index 0000000..06cf99c
--- /dev/null
+++ b/vendor/github.com/jackc/pgx/v5/pgproto3/copy_in_response.go
@@ -0,0 +1,96 @@
+package pgproto3
+
+import (
+	"bytes"
+	"encoding/binary"
+	"encoding/json"
+	"errors"
+	"math"
+
+	"github.com/jackc/pgx/v5/internal/pgio"
+)
+
+type CopyInResponse struct {
+	OverallFormat     byte
+	ColumnFormatCodes []uint16
+}
+
+// Backend identifies this message as sendable by the PostgreSQL backend.
+func (*CopyInResponse) Backend() {}
+
+// 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 *CopyInResponse) Decode(src []byte) error {
+	buf := bytes.NewBuffer(src)
+
+	if buf.Len() < 3 {
+		return &invalidMessageFormatErr{messageType: "CopyInResponse"}
+	}
+
+	overallFormat := buf.Next(1)[0]
+
+	columnCount := int(binary.BigEndian.Uint16(buf.Next(2)))
+	if buf.Len() != columnCount*2 {
+		return &invalidMessageFormatErr{messageType: "CopyInResponse"}
+	}
+
+	columnFormatCodes := make([]uint16, columnCount)
+	for i := 0; i < columnCount; i++ {
+		columnFormatCodes[i] = binary.BigEndian.Uint16(buf.Next(2))
+	}
+
+	*dst = CopyInResponse{OverallFormat: overallFormat, ColumnFormatCodes: columnFormatCodes}
+
+	return nil
+}
+
+// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
+func (src *CopyInResponse) Encode(dst []byte) ([]byte, error) {
+	dst, sp := beginMessage(dst, 'G')
+
+	dst = append(dst, src.OverallFormat)
+	if len(src.ColumnFormatCodes) > math.MaxUint16 {
+		return nil, errors.New("too many column format codes")
+	}
+	dst = pgio.AppendUint16(dst, uint16(len(src.ColumnFormatCodes)))
+	for _, fc := range src.ColumnFormatCodes {
+		dst = pgio.AppendUint16(dst, fc)
+	}
+
+	return finishMessage(dst, sp)
+}
+
+// MarshalJSON implements encoding/json.Marshaler.
+func (src CopyInResponse) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Type              string
+		ColumnFormatCodes []uint16
+	}{
+		Type:              "CopyInResponse",
+		ColumnFormatCodes: src.ColumnFormatCodes,
+	})
+}
+
+// UnmarshalJSON implements encoding/json.Unmarshaler.
+func (dst *CopyInResponse) UnmarshalJSON(data []byte) error {
+	// Ignore null, like in the main JSON package.
+	if string(data) == "null" {
+		return nil
+	}
+
+	var msg struct {
+		OverallFormat     string
+		ColumnFormatCodes []uint16
+	}
+	if err := json.Unmarshal(data, &msg); err != nil {
+		return err
+	}
+
+	if len(msg.OverallFormat) != 1 {
+		return errors.New("invalid length for CopyInResponse.OverallFormat")
+	}
+
+	dst.OverallFormat = msg.OverallFormat[0]
+	dst.ColumnFormatCodes = msg.ColumnFormatCodes
+	return nil
+}