Golang fs.NewLimited函數代碼示例

// NewFsWithConnection contstructs an Fs from the path, container:path
// and authenticated connection
func NewFsWithConnection(name, root string, c *swift.Connection) (fs.Fs, error) {
	container, directory, err := parsePath(root)
	if err != nil {
		return nil, err
	}
	f := &Fs{
		name:              name,
		c:                 *c,
		container:         container,
		segmentsContainer: container + "_segments",
		root:              directory,
	}
	if f.root != "" {
		f.root += "/"
		// Check to see if the object exists - ignoring directory markers
		info, _, err := f.c.Object(container, directory)
		if err == nil && info.ContentType != directoryMarkerContentType {
			remote := path.Base(directory)
			f.root = path.Dir(directory)
			if f.root == "." {
				f.root = ""
			} else {
				f.root += "/"
			}
			obj := f.NewFsObject(remote)
			// return a Fs Limited to this object
			return fs.NewLimited(f, obj), nil
		}
	}
	return f, nil
}

// NewFs contstructs an FsSwift from the path, container:path
func NewFs(name, root string) (fs.Fs, error) {
	container, directory, err := parsePath(root)
	if err != nil {
		return nil, err
	}
	c, err := swiftConnection(name)
	if err != nil {
		return nil, err
	}
	f := &FsSwift{
		name:      name,
		c:         *c,
		container: container,
		root:      directory,
	}
	if f.root != "" {
		f.root += "/"
		// Check to see if the object exists
		_, _, err = f.c.Object(container, directory)
		if err == nil {
			remote := path.Base(directory)
			f.root = path.Dir(directory)
			if f.root == "." {
				f.root = ""
			} else {
				f.root += "/"
			}
			obj := f.NewFsObject(remote)
			// return a Fs Limited to this object
			return fs.NewLimited(f, obj), nil
		}
	}
	return f, nil
}

// NewFs contstructs an FsDropbox from the path, container:path
func NewFs(name, root string) (fs.Fs, error) {
	db := newDropbox(name)
	f := &FsDropbox{
		db: db,
	}
	f.setRoot(root)

	// Read the token from the config file
	token := fs.ConfigFile.MustValue(name, "token")

	// Authorize the client
	db.SetAccessToken(token)

	// Make a db to store rclone metadata in
	f.datastoreManager = db.NewDatastoreManager()

	// Open the datastore in the background
	go f.openDataStore()

	// See if the root is actually an object
	entry, err := f.db.Metadata(f.slashRoot, false, false, "", "", metadataLimit)
	if err == nil && !entry.IsDir {
		remote := path.Base(f.root)
		newRoot := path.Dir(f.root)
		if newRoot == "." {
			newRoot = ""
		}
		f.setRoot(newRoot)
		obj := f.NewFsObject(remote)
		// return a Fs Limited to this object
		return fs.NewLimited(f, obj), nil
	}

	return f, nil
}

// NewFsS3 contstructs an FsS3 from the path, bucket:path
func NewFs(name, root string) (fs.Fs, error) {
	bucket, directory, err := s3ParsePath(root)
	if err != nil {
		return nil, err
	}
	c, err := s3Connection(name)
	if err != nil {
		return nil, err
	}
	f := &FsS3{
		c:      c,
		bucket: bucket,
		b:      c.Bucket(bucket),
		perm:   s3.Private, // FIXME need user to specify
		root:   directory,
	}
	if f.root != "" {
		f.root += "/"
		// Check to see if the object exists
		_, err = f.b.Head(directory, nil)
		if err == nil {
			remote := path.Base(directory)
			f.root = path.Dir(directory)
			if f.root == "." {
				f.root = ""
			} else {
				f.root += "/"
			}
			obj := f.NewFsObject(remote)
			// return a Fs Limited to this object
			return fs.NewLimited(f, obj), nil
		}
	}
	return f, nil
}

// NewFs contstructs an Fs from the path, bucket:path
func NewFs(name, root string) (fs.Fs, error) {
	bucket, directory, err := parsePath(root)
	if err != nil {
		return nil, err
	}
	f := &Fs{
		name:   name,
		bucket: bucket,
		root:   directory,
	}

	account := fs.ConfigFile.MustValue(name, "account")
	if account == "" {
		return nil, errors.New("account not found")
	}
	key := fs.ConfigFile.MustValue(name, "key")
	if key == "" {
		return nil, errors.New("key not found")
	}
	endpoint := fs.ConfigFile.MustValue(name, "endpoint", defaultEndpoint)

	f.srv = rest.NewClient(fs.Config.Client()).SetRoot(endpoint + "/b2api/v1").SetErrorHandler(errorHandler)

	opts := rest.Opts{
		Method:   "GET",
		Path:     "/b2_authorize_account",
		UserName: account,
		Password: key,
	}
	_, err = f.srv.CallJSON(&opts, nil, &f.info)
	if err != nil {
		return nil, fmt.Errorf("Failed to authenticate: %v", err)
	}
	f.srv.SetRoot(f.info.APIURL+"/b2api/v1").SetHeader("Authorization", f.info.AuthorizationToken)

	if f.root != "" {
		f.root += "/"
		// Check to see if the (bucket,directory) is actually an existing file
		oldRoot := f.root
		remote := path.Base(directory)
		f.root = path.Dir(directory)
		if f.root == "." {
			f.root = ""
		} else {
			f.root += "/"
		}
		obj := f.NewFsObject(remote)
		if obj != nil {
			return fs.NewLimited(f, obj), nil
		}
		f.root = oldRoot
	}
	return f, nil
}

// NewFs contstructs an Fs from the path, bucket:path
func NewFs(name, root string) (fs.Fs, error) {
	if uploadCutoff < chunkSize {
		return nil, errors.Errorf("b2: upload cutoff must be less than chunk size %v - was %v", chunkSize, uploadCutoff)
	}
	if chunkSize < minChunkSize {
		return nil, errors.Errorf("b2: chunk size can't be less than %v - was %v", minChunkSize, chunkSize)
	}
	bucket, directory, err := parsePath(root)
	if err != nil {
		return nil, err
	}
	account := fs.ConfigFile.MustValue(name, "account")
	if account == "" {
		return nil, errors.New("account not found")
	}
	key := fs.ConfigFile.MustValue(name, "key")
	if key == "" {
		return nil, errors.New("key not found")
	}
	endpoint := fs.ConfigFile.MustValue(name, "endpoint", defaultEndpoint)
	f := &Fs{
		name:     name,
		bucket:   bucket,
		root:     directory,
		account:  account,
		key:      key,
		endpoint: endpoint,
		srv:      rest.NewClient(fs.Config.Client()).SetErrorHandler(errorHandler),
		pacer:    pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
	}
	err = f.authorizeAccount()
	if err != nil {
		return nil, errors.Wrap(err, "failed to authorize account")
	}
	if f.root != "" {
		f.root += "/"
		// Check to see if the (bucket,directory) is actually an existing file
		oldRoot := f.root
		remote := path.Base(directory)
		f.root = path.Dir(directory)
		if f.root == "." {
			f.root = ""
		} else {
			f.root += "/"
		}
		obj := f.NewFsObject(remote)
		if obj != nil {
			return fs.NewLimited(f, obj), nil
		}
		f.root = oldRoot
	}
	return f, nil
}

// NewFs contstructs an FsStorage from the path, bucket:path
func NewFs(name, root string) (fs.Fs, error) {
	oAuthClient, err := oauthutil.NewClient(name, storageConfig)
	if err != nil {
		log.Fatalf("Failed to configure Google Cloud Storage: %v", err)
	}

	bucket, directory, err := parsePath(root)
	if err != nil {
		return nil, err
	}

	f := &FsStorage{
		name:          name,
		bucket:        bucket,
		root:          directory,
		projectNumber: fs.ConfigFile.MustValue(name, "project_number"),
		objectAcl:     fs.ConfigFile.MustValue(name, "object_acl"),
		bucketAcl:     fs.ConfigFile.MustValue(name, "bucket_acl"),
	}
	if f.objectAcl == "" {
		f.objectAcl = "private"
	}
	if f.bucketAcl == "" {
		f.bucketAcl = "private"
	}

	// Create a new authorized Drive client.
	f.client = oAuthClient
	f.svc, err = storage.New(f.client)
	if err != nil {
		return nil, fmt.Errorf("Couldn't create Google Cloud Storage client: %s", err)
	}

	if f.root != "" {
		f.root += "/"
		// Check to see if the object exists
		_, err = f.svc.Objects.Get(bucket, directory).Do()
		if err == nil {
			remote := path.Base(directory)
			f.root = path.Dir(directory)
			if f.root == "." {
				f.root = ""
			} else {
				f.root += "/"
			}
			obj := f.NewFsObject(remote)
			// return a Fs Limited to this object
			return fs.NewLimited(f, obj), nil
		}
	}
	return f, nil
}

// NewFs constructs an Fs from the path, container:path
func NewFs(name, root string) (fs.Fs, error) {
	root = parsePath(root)
	oAuthClient, err := oauthutil.NewClient(name, oauthConfig)
	if err != nil {
		log.Fatalf("Failed to configure One Drive: %v", err)
	}

	f := &Fs{
		name:  name,
		root:  root,
		srv:   rest.NewClient(oAuthClient).SetRoot(rootURL),
		pacer: pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant),
	}
	f.srv.SetErrorHandler(errorHandler)

	// Get rootID
	rootInfo, _, err := f.readMetaDataForPath("")
	if err != nil || rootInfo.ID == "" {
		return nil, fmt.Errorf("Failed to get root: %v", err)
	}

	f.dirCache = dircache.New(root, rootInfo.ID, f)

	// Find the current root
	err = f.dirCache.FindRoot(false)
	if err != nil {
		// Assume it is a file
		newRoot, remote := dircache.SplitPath(root)
		newF := *f
		newF.dirCache = dircache.New(newRoot, rootInfo.ID, &newF)
		newF.root = newRoot
		// Make new Fs which is the parent
		err = newF.dirCache.FindRoot(false)
		if err != nil {
			// No root so return old f
			return f, nil
		}
		obj := newF.newObjectWithInfo(remote, nil)
		if obj == nil {
			// File doesn't exist so return old f
			return f, nil
		}
		// return a Fs Limited to this object
		return fs.NewLimited(&newF, obj), nil
	}
	return f, nil
}

// NewFs contstructs an FsLocal from the path
func NewFs(name, root string) (fs.Fs, error) {
	root = filepath.ToSlash(path.Clean(root))
	f := &FsLocal{
		root:   root,
		warned: make(map[string]struct{}),
	}
	// Check to see if this points to a file
	fi, err := os.Lstat(f.root)
	if err == nil && fi.Mode().IsRegular() {
		// It is a file, so use the parent as the root
		remote := path.Base(root)
		f.root = path.Dir(root)
		obj := f.NewFsObject(remote)
		// return a Fs Limited to this object
		return fs.NewLimited(f, obj), nil
	}
	return f, nil
}

// NewFs contstructs an Fs from the path, bucket:path
func NewFs(name, root string) (fs.Fs, error) {
	bucket, directory, err := s3ParsePath(root)
	if err != nil {
		return nil, err
	}
	c, ses, err := s3Connection(name)
	if err != nil {
		return nil, err
	}
	f := &Fs{
		name:   name,
		c:      c,
		bucket: bucket,
		ses:    ses,
		// FIXME perm:   s3.Private, // FIXME need user to specify
		root:               directory,
		locationConstraint: fs.ConfigFile.MustValue(name, "location_constraint"),
		sse:                fs.ConfigFile.MustValue(name, "server_side_encryption"),
	}
	if f.root != "" {
		f.root += "/"
		// Check to see if the object exists
		req := s3.HeadObjectInput{
			Bucket: &f.bucket,
			Key:    &directory,
		}
		_, err = f.c.HeadObject(&req)
		if err == nil {
			remote := path.Base(directory)
			f.root = path.Dir(directory)
			if f.root == "." {
				f.root = ""
			} else {
				f.root += "/"
			}
			obj := f.NewFsObject(remote)
			// return a Fs Limited to this object
			return fs.NewLimited(f, obj), nil
		}
	}
	// f.listMultipartUploads()
	return f, nil
}

// NewFs constructs an FsLocal from the path
func NewFs(name, root string) (fs.Fs, error) {
	var err error

	f := &FsLocal{
		name:   name,
		warned: make(map[string]struct{}),
	}
	f.root = filterPath(f.cleanUtf8(root))

	// Check to see if this points to a file
	fi, err := os.Lstat(f.root)
	if err == nil && fi.Mode().IsRegular() {
		// It is a file, so use the parent as the root
		var remote string
		f.root, remote = getDirFile(f.root)
		obj := f.NewFsObject(remote)
		// return a Fs Limited to this object
		return fs.NewLimited(f, obj), nil
	}
	return f, nil
}

// NewFs contstructs an Fs from the path, container:path
func NewFs(name, root string) (fs.Fs, error) {
	if uploadChunkSize > maxUploadChunkSize {
		return nil, fmt.Errorf("Chunk size too big, must be < %v", maxUploadChunkSize)
	}
	db, err := newDropbox(name)
	if err != nil {
		return nil, err
	}
	f := &Fs{
		name: name,
		db:   db,
	}
	f.setRoot(root)

	// Read the token from the config file
	token := fs.ConfigFile.MustValue(name, "token")

	// Set our custom context which enables our custom transport for timeouts etc
	db.SetContext(oauthutil.Context())

	// Authorize the client
	db.SetAccessToken(token)

	// See if the root is actually an object
	entry, err := f.db.Metadata(f.slashRoot, false, false, "", "", metadataLimit)
	if err == nil && !entry.IsDir {
		remote := path.Base(f.root)
		newRoot := path.Dir(f.root)
		if newRoot == "." {
			newRoot = ""
		}
		f.setRoot(newRoot)
		obj := f.NewFsObject(remote)
		// return a Fs Limited to this object
		return fs.NewLimited(f, obj), nil
	}

	return f, nil
}

// NewFsWithConnection contstructs an Fs from the path, container:path
// and authenticated connection
func NewFsWithConnection(name, root string, c *swift.Connection) (fs.Fs, error) {
	container, directory, err := parsePath(root)
	if err != nil {
		return nil, err
	}
	f := &Fs{
		name:              name,
		c:                 c,
		container:         container,
		segmentsContainer: container + "_segments",
		root:              directory,
	}
	// StorageURL overloading
	storageURL := fs.ConfigFile.MustValue(name, "storage_url")
	if storageURL != "" {
		f.c.StorageUrl = storageURL
		f.c.Auth = newAuth(f.c.Auth, storageURL)
	}
	if f.root != "" {
		f.root += "/"
		// Check to see if the object exists - ignoring directory markers
		info, _, err := f.c.Object(container, directory)
		if err == nil && info.ContentType != directoryMarkerContentType {
			remote := path.Base(directory)
			f.root = path.Dir(directory)
			if f.root == "." {
				f.root = ""
			} else {
				f.root += "/"
			}
			obj := f.NewFsObject(remote)
			// return a Fs Limited to this object
			return fs.NewLimited(f, obj), nil
		}
	}
	return f, nil
}

// NewFs constructs an Fs from the path, container:path
func NewFs(name, root string) (fs.Fs, error) {
	//read access token from config
	token, err := getAccessToken(name)
	if err != nil {
		return nil, err
	}

	//create new client
	yandexDisk := yandex.NewClient(token.AccessToken, fs.Config.Client())

	f := &Fs{
		yd: yandexDisk,
	}

	f.setRoot(root)

	//limited fs
	// Check to see if the object exists and is a file
	//request object meta info
	var opt2 yandex.ResourceInfoRequestOptions
	if ResourceInfoResponse, err := yandexDisk.NewResourceInfoRequest(root, opt2).Exec(); err != nil {
		//return err
	} else {
		if ResourceInfoResponse.ResourceType == "file" {
			//limited fs
			remote := path.Base(root)
			f.setRoot(path.Dir(root))

			obj := f.newFsObjectWithInfo(remote, ResourceInfoResponse)
			// return a Fs Limited to this object
			return fs.NewLimited(f, obj), nil
		}
	}

	return f, nil
}

// NewFs contstructs an FsDrive from the path, container:path
func NewFs(name, path string) (fs.Fs, error) {
	if !isPowerOfTwo(int64(chunkSize)) {
		return nil, fmt.Errorf("drive: chunk size %v isn't a power of two", chunkSize)
	}
	if chunkSize < 256*1024 {
		return nil, fmt.Errorf("drive: chunk size can't be less than 256k - was %v", chunkSize)
	}

	t, err := driveAuth.NewTransport(name)
	if err != nil {
		return nil, err
	}

	root, err := parseDrivePath(path)
	if err != nil {
		return nil, err
	}

	f := &FsDrive{
		root:      root,
		dirCache:  newDirCache(),
		pacer:     make(chan struct{}, 1),
		sleepTime: minSleep,
	}

	// Put the first pacing token in
	f.pacer <- struct{}{}

	// Create a new authorized Drive client.
	f.client = t.Client()
	f.svc, err = drive.New(f.client)
	if err != nil {
		return nil, fmt.Errorf("Couldn't create Drive client: %s", err)
	}

	// Read About so we know the root path
	f.call(&err, func() {
		f.about, err = f.svc.About.Get().Do()
	})
	if err != nil {
		return nil, fmt.Errorf("Couldn't read info about Drive: %s", err)
	}

	// Find the Id of the true root and clear everything
	f.resetRoot()
	// Find the current root
	err = f.findRoot(false)
	if err != nil {
		// Assume it is a file
		newRoot, remote := splitPath(root)
		newF := *f
		newF.root = newRoot
		// Make new Fs which is the parent
		err = newF.findRoot(false)
		if err != nil {
			// No root so return old f
			return f, nil
		}
		obj, err := newF.newFsObjectWithInfoErr(remote, nil)
		if err != nil {
			// File doesn't exist so return old f
			return f, nil
		}
		// return a Fs Limited to this object
		return fs.NewLimited(&newF, obj), nil
	}
	// fmt.Printf("Root id %s", f.rootId)
	return f, nil
}