mirror of https://github.com/perkeep/perkeep.git
47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
/*
|
|
Copyright 2013 The Camlistore Authors.
|
|
|
|
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 kvutil contains helpers related to
|
|
// github.com/cznic/kv.
|
|
package kvutil
|
|
|
|
import (
|
|
"io"
|
|
"os"
|
|
|
|
"camlistore.org/third_party/github.com/camlistore/lock"
|
|
"camlistore.org/third_party/github.com/cznic/kv"
|
|
)
|
|
|
|
// Open opens the named kv DB file for reading/writing. It
|
|
// creates the file if it does not exist yet.
|
|
func Open(filePath string, opts *kv.Options) (*kv.DB, error) {
|
|
// TODO(mpl): use it in index pkg and such
|
|
createOpen := kv.Open
|
|
if _, err := os.Stat(filePath); os.IsNotExist(err) {
|
|
createOpen = kv.Create
|
|
}
|
|
if opts == nil {
|
|
opts = &kv.Options{}
|
|
}
|
|
if opts.Locker == nil {
|
|
opts.Locker = func(fullPath string) (io.Closer, error) {
|
|
return lock.Lock(filePath + ".lock")
|
|
}
|
|
}
|
|
return createOpen(filePath, opts)
|
|
}
|