mirror of
https://github.com/golang/go
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8b3cccae50
- Removed the StandAlone and Asset root types as they were just there for other vfses to satisfy the FileSystem interface and causing unnecessary confusion. Returning just empty strings in those scenarios now to clarify that it is a dummy placeholder. - Removed the prefix "Fs" from RootType as it was unnecessary. - Using the RootType type to pass down to the html templates instead of converting to string. The templates are capable of converting to the actual string representation when comparing the value. Change-Id: Iadc039f1354ecd814eec0af1e52cdbaaeff0cc89 Reviewed-on: https://go-review.googlesource.com/106196 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
90 lines
2.0 KiB
Go
90 lines
2.0 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package vfs
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import (
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"fmt"
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"os"
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"time"
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)
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// NewNameSpace returns a NameSpace pre-initialized with an empty
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// emulated directory mounted on the root mount point "/". This
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// allows directory traversal routines to work properly even if
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// a folder is not explicitly mounted at root by the user.
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func NewNameSpace() NameSpace {
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ns := NameSpace{}
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ns.Bind("/", &emptyVFS{}, "/", BindReplace)
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return ns
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}
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// type emptyVFS emulates a FileSystem consisting of an empty directory
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type emptyVFS struct{}
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// Open implements Opener. Since emptyVFS is an empty directory, all
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// attempts to open a file should returns errors.
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func (e *emptyVFS) Open(path string) (ReadSeekCloser, error) {
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if path == "/" {
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return nil, fmt.Errorf("open: / is a directory")
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}
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return nil, os.ErrNotExist
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}
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// Stat returns os.FileInfo for an empty directory if the path is
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// is root "/" or error. os.FileInfo is implemented by emptyVFS
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func (e *emptyVFS) Stat(path string) (os.FileInfo, error) {
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if path == "/" {
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return e, nil
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}
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return nil, os.ErrNotExist
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}
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func (e *emptyVFS) Lstat(path string) (os.FileInfo, error) {
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return e.Stat(path)
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}
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// ReadDir returns an empty os.FileInfo slice for "/", else error.
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func (e *emptyVFS) ReadDir(path string) ([]os.FileInfo, error) {
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if path == "/" {
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return []os.FileInfo{}, nil
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}
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return nil, os.ErrNotExist
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}
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func (e *emptyVFS) String() string {
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return "emptyVFS(/)"
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}
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func (e *emptyVFS) RootType(path string) RootType {
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return ""
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}
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// These functions below implement os.FileInfo for the single
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// empty emulated directory.
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func (e *emptyVFS) Name() string {
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return "/"
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}
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func (e *emptyVFS) Size() int64 {
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return 0
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}
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func (e *emptyVFS) Mode() os.FileMode {
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return os.ModeDir | os.ModePerm
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}
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func (e *emptyVFS) ModTime() time.Time {
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return time.Time{}
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}
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func (e *emptyVFS) IsDir() bool {
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return true
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}
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func (e *emptyVFS) Sys() interface{} {
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return nil
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}
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