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woodpecker/store/datastore/utils.go
2018-03-21 14:02:17 +01:00

50 lines
1.2 KiB
Go

// Copyright 2018 Drone.IO 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 datastore
import (
"strconv"
"github.com/russross/meddler"
)
// rebind is a helper function that changes the sql
// bind type from ? to $ for postgres queries.
func rebind(query string) string {
if meddler.Default != meddler.PostgreSQL {
return query
}
qb := []byte(query)
// Add space enough for 5 params before we have to allocate
rqb := make([]byte, 0, len(qb)+5)
j := 1
for _, b := range qb {
switch b {
case '?':
rqb = append(rqb, '$')
for _, b := range strconv.Itoa(j) {
rqb = append(rqb, byte(b))
}
j++
case '`':
rqb = append(rqb, ' ')
default:
rqb = append(rqb, b)
}
}
return string(rqb)
}