chore: import upstream snapshot with attribution

2026-07-13 12:32:25 +08:00
commit e014feafe1
2285 changed files with 1131979 additions and 0 deletions
@@ -0,0 +1,108 @@
+// Copyright 2024 Dolthub, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package functions
+
+import (
+	"bytes"
+	"encoding/hex"
+	"strings"
+
+	"github.com/dolthub/go-mysql-server/sql"
+
+	"github.com/dolthub/doltgresql/server/functions/framework"
+	pgtypes "github.com/dolthub/doltgresql/server/types"
+	"github.com/dolthub/doltgresql/utils"
+)
+
+// initBytea registers the functions to the catalog.
+func initBytea() {
+	framework.RegisterFunction(byteain)
+	framework.RegisterFunction(byteaout)
+	framework.RegisterFunction(bytearecv)
+	framework.RegisterFunction(byteasend)
+	framework.RegisterFunction(byteacmp)
+}
+
+// byteain represents the PostgreSQL function of bytea type IO input.
+var byteain = framework.Function1{
+	Name:       "byteain",
+	Return:     pgtypes.Bytea,
+	Parameters: [1]*pgtypes.DoltgresType{pgtypes.Cstring},
+	Strict:     true,
+	Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val any) (any, error) {
+		input := val.(string)
+		if strings.HasPrefix(input, `\x`) {
+			return hex.DecodeString(input[2:])
+		} else {
+			return []byte(input), nil
+		}
+	},
+}
+
+// byteaout represents the PostgreSQL function of bytea type IO output.
+var byteaout = framework.Function1{
+	Name:       "byteaout",
+	Return:     pgtypes.Cstring,
+	Parameters: [1]*pgtypes.DoltgresType{pgtypes.Bytea},
+	Strict:     true,
+	Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val any) (any, error) {
+		return `\x` + hex.EncodeToString(val.([]byte)), nil
+	},
+}
+
+// bytearecv represents the PostgreSQL function of bytea type IO receive.
+var bytearecv = framework.Function1{
+	Name:       "bytearecv",
+	Return:     pgtypes.Bytea,
+	Parameters: [1]*pgtypes.DoltgresType{pgtypes.Internal},
+	Strict:     true,
+	Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val any) (any, error) {
+		return val, nil
+	},
+}
+
+// byteasend represents the PostgreSQL function of bytea type IO send.
+var byteasend = framework.Function1{
+	Name:       "byteasend",
+	Return:     pgtypes.Bytea,
+	Parameters: [1]*pgtypes.DoltgresType{pgtypes.Bytea},
+	Strict:     true,
+	Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val any) (any, error) {
+		if wrapper, ok := val.(sql.AnyWrapper); ok {
+			var err error
+			val, err = wrapper.UnwrapAny(ctx)
+			if err != nil {
+				return nil, err
+			}
+			if val == nil {
+				return nil, nil
+			}
+		}
+		writer := utils.NewWireWriter()
+		writer.WriteBytes(val.([]byte))
+		return writer.BufferData(), nil
+	},
+}
+
+// byteacmp represents the PostgreSQL function of bytea type compare.
+var byteacmp = framework.Function2{
+	Name:       "byteacmp",
+	Return:     pgtypes.Int32,
+	Parameters: [2]*pgtypes.DoltgresType{pgtypes.Bytea, pgtypes.Bytea},
+	Strict:     true,
+	Callable: func(ctx *sql.Context, _ [3]*pgtypes.DoltgresType, val1, val2 any) (any, error) {
+		return int32(bytes.Compare(val1.([]byte), val2.([]byte))), nil
+	},
+}