xfs

XFS

文件系统的抽象，支持多种文件系统，本地，内存，Map，（阿里云）。

FileSystem

package xfs

import (
    "os"
    "time"
)

// Fs is the filesystem interface.
//
// Any simulated or real filesystem should implement this interface.
type Fs interface {
	// Create creates a file in the filesystem, returning the file and an
	// error, if any happens.
	Create(name string) (File, error)

	// Mkdir creates a directory in the filesystem, return an error if any
	// happens.
	Mkdir(name string, perm os.FileMode) error

	// MkdirAll creates a directory path and all parents that does not exist
	// yet.
	MkdirAll(path string, perm os.FileMode) error

	// Open opens a file, returning it or an error, if any happens.
	Open(name string) (File, error)

	// OpenFile opens a file using the given flags and the given mode.
	OpenFile(name string, flag int, perm os.FileMode) (File, error)

	// Remove removes a file identified by name, returning an error, if any
	// happens.
	Remove(name string) error

	// RemoveAll removes a directory path and any children it contains. It
	// does not fail if the path does not exist (return nil).
	RemoveAll(path string) error

	// Rename renames a file.
	Rename(oldname, newname string) error

	// Stat returns a FileInfo describing the named file, or an error, if any
	// happens.
	Stat(name string) (os.FileInfo, error)

	// The name of this FileSystem
	Name() string

	//Chmod changes the mode of the named file to mode.
	Chmod(name string, mode os.FileMode) error

	//Chtimes changes the access and modification times of the named file
	Chtimes(name string, atime time.Time, mtime time.Time) error
}

File

package xfs

import (
    "io"
    "os"
)

// File represents a file in the filesystem.
type File interface {
	io.Closer
	io.Reader
	io.ReaderAt
	io.Seeker
	io.Writer
	io.WriterAt

	Name() string
	Readdir(count int) ([]os.FileInfo, error)
	Readdirnames(n int) ([]string, error)
	Stat() (os.FileInfo, error)
	Sync() error
	Truncate(size int64) error
	WriteString(s string) (ret int, err error)
}

PwdFs 当前目录作为根目录

func PwdFs() (FileSystem, error)

MemoryFs 内存文件系统

func MemoryFs() FileSystem

WriteFile 写文件

package xfs
func WriteFile(fs FileSystem, filename string, data []byte) error
func OsWriteFile(filename string, data []byte) error

CopyFile 拷贝文件

package xfs
func CopyFile(dstFs FileSystem, dst string, srcFs FileSystem, src string, mode os.FileMode) (int64, error)
func OsCopyFile(dst, src string, mode os.FileMode) (int64, error)

Exists 文件是否存在

package xfs
func Exists(fs FileSystem, path string) (bool, error)
func OsExists(path string) (bool, error)