Object TTYOutputStream

tty Write stream object for processing tty Output

There is no way you can create a separate class, globally only process.stdoutexamples

1
2
// 清除屏幕上光标以右的内容
process.stdout.clearLine(1)

Inheritance

Member attributes

isTTY

Boolean, always true

1
readonly Boolean TTYOutputStream.isTTY;

---

fd

Integer, query Stream The corresponding file descriptor value, implemented by the subclass

1
readonly Integer TTYOutputStream.fd;

Member function

clearLine

Clear line according to the direction indicated by dir

1
TTYOutputStream.clearLine(Integer dir = 0);

Call parameters:

• dir: Integer, cleaning direction

The direction of dir:

• -1: Clean up from the cursor to the beginning of the line
• 0: Clean up the entire line
• 1: Clean up from the cursor to the end of the line

---

clearScreenDown

Clear characters from the cursor to the end of the screen

1
TTYOutputStream.clearScreenDown();

---

read

Read data of the specified size from the stream

1
Buffer TTYOutputStream.read(Integer bytes = -1) async;

Call parameters:

• bytes: Integer, specify the amount of data to be read, the default is to read a random size data block, the size of the data read depends on the device

Return result:

• Buffer, Return the data read from the stream, if there is no data to read, or the connection is interrupted, then return null

---

write

Write the given data to the stream

1
TTYOutputStream.write(Buffer data) async;

Call parameters:

• data: Buffer, Given the data to be written

---

flush

Write the contents of the file buffer to the physical device

1
TTYOutputStream.flush() async;

---

close

Close the current stream object

1
TTYOutputStream.close() async;

---

copyTo

Copy the stream data to the target stream

1
2
Long TTYOutputStream.copyTo(Stream stm,
    Long bytes = -1) async;

Call parameters:

• stm: Stream, The target stream object
• bytes: Long, the number of bytes copied

Return result:

• Long, Returns the number of bytes copied

---

toString

Returns the string representation of the object, generally returns "[Native Object]", the object can be re-implemented according to its own characteristics

1
String TTYOutputStream.toString();

Return result:

• String, Returns the string representation of the object

---

toJSON

Returns the JSON format representation of the object, generally returns a collection of readable attributes defined by the object

1
Value TTYOutputStream.toJSON(String key = "");

Call parameters:

• key: String, unused

Return result:

• Value, Returns a value containing JSON serializable