wehub-resource-sync
109 lines
3.3 KiB
Go
109 lines
3.3 KiB
Go
// 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
|
|
},
|
|
}
|