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111 lines
3.3 KiB
Go
111 lines
3.3 KiB
Go
// Copyright © 2014 Steve Francia <spf@spf13.com>.
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// Copyright 2013 tsuru authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package afero provides types and methods for interacting with the filesystem,
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// as an abstraction layer.
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// Afero also provides a few implementations that are mostly interoperable. One that
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// uses the operating system filesystem, one that uses memory to store files
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// (cross platform) and an interface that should be implemented if you want to
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// provide your own filesystem.
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package afero
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import (
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"errors"
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"io"
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"os"
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"time"
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)
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type Afero struct {
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Fs
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}
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// File represents a file in the filesystem.
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type File interface {
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io.Closer
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io.Reader
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io.ReaderAt
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io.Seeker
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io.Writer
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io.WriterAt
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Name() string
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Readdir(count int) ([]os.FileInfo, error)
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Readdirnames(n int) ([]string, error)
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Stat() (os.FileInfo, error)
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Sync() error
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Truncate(size int64) error
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WriteString(s string) (ret int, err error)
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}
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// Fs is the filesystem interface.
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//
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// Any simulated or real filesystem should implement this interface.
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type Fs interface {
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// Create creates a file in the filesystem, returning the file and an
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// error, if any happens.
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Create(name string) (File, error)
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// Mkdir creates a directory in the filesystem, return an error if any
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// happens.
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Mkdir(name string, perm os.FileMode) error
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// MkdirAll creates a directory path and all parents that does not exist
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// yet.
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MkdirAll(path string, perm os.FileMode) error
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// Open opens a file, returning it or an error, if any happens.
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Open(name string) (File, error)
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// OpenFile opens a file using the given flags and the given mode.
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OpenFile(name string, flag int, perm os.FileMode) (File, error)
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// Remove removes a file identified by name, returning an error, if any
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// happens.
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Remove(name string) error
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// RemoveAll removes a directory path and any children it contains. It
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// does not fail if the path does not exist (return nil).
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RemoveAll(path string) error
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// Rename renames a file.
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Rename(oldname, newname string) error
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// Stat returns a FileInfo describing the named file, or an error, if any
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// happens.
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Stat(name string) (os.FileInfo, error)
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// The name of this FileSystem
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Name() string
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// Chmod changes the mode of the named file to mode.
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Chmod(name string, mode os.FileMode) error
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// Chown changes the uid and gid of the named file.
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Chown(name string, uid, gid int) error
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// Chtimes changes the access and modification times of the named file
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Chtimes(name string, atime time.Time, mtime time.Time) error
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}
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var (
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ErrFileClosed = errors.New("File is closed")
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ErrOutOfRange = errors.New("out of range")
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ErrTooLarge = errors.New("too large")
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ErrFileNotFound = os.ErrNotExist
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ErrFileExists = os.ErrExist
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ErrDestinationExists = os.ErrExist
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)
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