minio/pkg/fs/fs-common.go

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/*
* Minio Cloud Storage, (C) 2015 Minio, 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 fs
import (
"bufio"
"bytes"
"os"
"sort"
"strings"
"time"
)
// Metadata - carries metadata about object
type Metadata struct {
Md5sum []byte
ContentType string
}
// sortUnique sort a slice in lexical order, removing duplicate elements
func sortUnique(objects []string) []string {
results := []string{}
seen := make(map[string]string)
for _, val := range objects {
if _, ok := seen[val]; !ok {
results = append(results, val)
seen[val] = val
}
}
sort.Strings(results)
return results
}
type contentInfo struct {
os.FileInfo
Prefix string
Size int64
Mode os.FileMode
ModTime time.Time
}
type bucketDir struct {
files []contentInfo
root string
}
func delimiter(object, delimiter string) string {
readBuffer := bytes.NewBufferString(object)
reader := bufio.NewReader(readBuffer)
stringReader := strings.NewReader(delimiter)
delimited, _ := stringReader.ReadByte()
delimitedStr, _ := reader.ReadString(delimited)
return delimitedStr
}
// byObjectMetadataKey is a sortable interface for UploadMetadata slice
type byUploadMetadataKey []*UploadMetadata
func (b byUploadMetadataKey) Len() int { return len(b) }
func (b byUploadMetadataKey) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
func (b byUploadMetadataKey) Less(i, j int) bool { return b[i].Object < b[j].Object }