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minio/cmd/posix-prepare-path.go

56 lines
1.5 KiB

/*
* Minio Cloud Storage, (C) 2016, 2017 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 cmd
import (
"path/filepath"
"runtime"
"strings"
)
// preparePath rewrites path to handle any OS specific details.
func preparePath(path string) string {
if runtime.GOOS == globalWindowsOSName {
// Microsoft Windows supports long path names using
// uniform naming convention (UNC).
return UNCPath(path)
}
return path
}
// UNCPath converts a absolute windows path to a UNC long path.
func UNCPath(path string) string {
// Clean the path for any trailing "/".
path = filepath.Clean(path)
// UNC can NOT use "/", so convert all to "\".
path = filepath.FromSlash(path)
// If prefix is "\\", we already have a UNC path or server.
if strings.HasPrefix(path, `\\`) {
// If already long path, just keep it
if strings.HasPrefix(path, `\\?\`) {
return path
}
// Trim "\\" from path and add UNC prefix.
return `\\?\UNC\` + strings.TrimPrefix(path, `\\`)
}
path = `\\?\` + path
return path
}