FileSource

Constructors

new FileSource()

new FileSource(root): FileSource

Parameters

Parameter	Type	Default value
root	string	''

Returns

FileSource

Source

src/dapi.ts:1191

Properties

Property	Modifier	Type
root	private	string

Methods

createDirectory()

createDirectory(file): Promise<void>

Creates directory Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Description
file	string | FileInfo

Returns

Promise<void>

Source

src/dapi.ts:1373

---

delete()

delete(file): Promise<void>

Deletes a file. Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Description
file	string | FileInfo

Returns

Promise<void>

Source

src/dapi.ts:1217

---

exists()

exists(file): Promise<boolean>

Checks if a file exists. Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Description
file	string | FileInfo

Returns

Promise<boolean>

Source

src/dapi.ts:1199

---

list()

list(file, recursive, searchPattern): Promise <FileInfo[]>

Lists files according to a search pattern. Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Default value	Description
file	string | FileInfo	undefined	folder
recursive	boolean	false	whether to search in folders recursively
searchPattern	null | string	null	search pattern, such as part of a filename or extension, e.g., "filename-prefix" and "csv"

Returns

Promise <FileInfo[]>

Source

src/dapi.ts:1253

---

move()

move(files, newPath): Promise<void>

Moves a file. Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Description
files	string[] | FileInfo[]
newPath	string

Returns

Promise<void>

Source

src/dapi.ts:1227

---

readAsBytes()

readAsBytes(file): Promise<Uint8Array>

Reads a file as bytes. Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Description
file	string | FileInfo

Returns

Promise<Uint8Array>

Source

src/dapi.ts:1349

---

readAsText()

readAsText(file): Promise<string>

Reads a file as string. Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Description
file	string | FileInfo

Returns

Promise<string>

Source

src/dapi.ts:1331

---

readBinaryDataFrames()

readBinaryDataFrames(file): Promise <DataFrame[]>

Reads a d42 file as a list of dataframes.

Parameters

Parameter	Type	Description
file	string | FileInfo

Returns

Promise <DataFrame[]>

Source

src/dapi.ts:1357

---

readCsv()

readCsv(file, options?): Promise <DataFrame>

Reads CSV as DataFrame. Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Description
file	string | FileInfo
options?	CsvImportOptions

Returns

Promise <DataFrame>

Source

src/dapi.ts:1341

---

readFilesAsBlobs()

readFilesAsBlobs(folder, recursive, ext): Promise<object>

Reads the entire contents of a folder and returns an object. The resulting object's keys are the file names relative to the folder path, and the corresponding values are of the Blob type.

Parameters

Parameter	Type	Default value	Description
folder	string | FileInfo	undefined
recursive	boolean	false	whether to read files in folders recursively
ext	undefined | string	undefined	files extension

Returns

Promise<object>

Source

src/dapi.ts:1265

---

readFilesAsJson()

readFilesAsJson(folder, recursive, ext): Promise<object>

Reads the entire contents of a folder and returns an object. The resulting object's keys are the file names relative to the folder path, and the corresponding values are JSON objects. If conversion to a JSON fails, the file will be skipped.

Parameters

Parameter	Type	Default value	Description
folder	string | FileInfo	undefined
recursive	boolean	false	whether to read files in folders recursively
ext	undefined | string	undefined	files extension

Returns

Promise<object>

Source

src/dapi.ts:1296

---

readFilesAsString()

readFilesAsString(folder, recursive, ext): Promise<object>

Reads the entire contents of a folder and returns an object. The resulting object's keys are the file names relative to the folder path, and the corresponding values are strings. If conversion to a string fails, the file will be skipped.

Parameters

Parameter	Type	Default value	Description
folder	string | FileInfo	undefined
recursive	boolean	false	whether to read files in folders recursively
ext	undefined | string	undefined	files extension

Returns

Promise<object>

Source

src/dapi.ts:1315

---

rename()

rename(file, newName): Promise<void>

Renames a file. Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Description
file	string | FileInfo
newName	string

Returns

Promise<void>

Source

src/dapi.ts:1240

---

setRoot()

private setRoot(file): string

Parameters

Parameter	Type
file	string | FileInfo

Returns

string

Source

src/dapi.ts:1204

---

write()

write(file, blob?): Promise<void>

Writes a file. Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Description
file	string | FileInfo
blob?	number[]

Returns

Promise<void>

Source

src/dapi.ts:1383

---

writeAsText()

writeAsText(file, data): Promise<void>

Writes a text file. Sample: https://public.datagrok.ai/js/samples/dapi/files

Parameters

Parameter	Type	Description
file	string | FileInfo
data	string

Returns

Promise<void>

Source

src/dapi.ts:1394

---

writeBinaryDataFrames()

writeBinaryDataFrames(file, dataFrames): Promise<void>

Writes a list of dataframes as a d42 file.

Parameters

Parameter	Type	Description
file	string | FileInfo
dataFrames	DataFrame[]

Returns

Promise<void>

Source

src/dapi.ts:1365