description

# Stdout class

An IOSink connected to either the standard out or error of the process.

Provides a blocking `IOSink`, so using it to write will block until the output is written.

In some situations this blocking behavior is undesirable as it does not provide the same non-blocking behavior that `dart:io` in general exposes. Use the property nonBlocking to get an IOSink which has the non-blocking behavior.

This class can also be used to check whether `stdout` or `stderr` is connected to a terminal and query some terminal properties.

The `addError` API is inherited from StreamSink and calling it will result in an unhandled asynchronous error unless there is an error handler on `done`.

The `lineTerminator` field is used by the `write`, `writeln`, `writeAll` and `writeCharCode` methods to translate `"\n"`. By default, `"\n"` is output literally.

Implemented types
  - IOSink

## Properties

done → Future
  A future that will complete when the consumer closes, or when an error occurs.
  no setterinherited
encoding ↔ Encoding
  The Encoding used when writing strings.
  getter/setter pairinherited
hashCode → int
  The hash code for this object.
  no setterinherited
hasTerminal → bool
  Whether there is a terminal attached to stdout.
  no setter
lineTerminator ↔ String
  Line ending appended by `writeln`, and replacing `"\n"` in some methods.
  getter/setter pairinherited
nonBlocking → IOSink
  A non-blocking `IOSink` for the same output.
  no setter
runtimeType → Type
  A representation of the runtime type of the object.
  no setterinherited
supportsAnsiEscapes → bool
  Whether connected to a terminal that supports ANSI escape sequences.
  no setter
terminalColumns → int
  The number of columns of the terminal.
  no setter
terminalLines → int
  The number of lines of the terminal.
  no setter

## Methods

add(List<int> data) → void
  Adds byte `data` to the target consumer, ignoring encoding.
  inherited
addError(Object error, [StackTrace? stackTrace]) → void
  Passes the error to the target consumer as an error event.
  inherited
addStream(Stream<List<int>> stream) → Future
  Adds all elements of the given `stream`.
  inherited
close() → Future
  Close the target consumer.
  inherited
flush() → Future
  Returns a Future that completes once all buffered data is accepted by the underlying StreamConsumer.
  inherited
noSuchMethod(Invocation invocation) → dynamic
  Invoked when a nonexistent method or property is accessed.
  inherited
toString() → String
  A string representation of this object.
  inherited
write(Object? object) → void
  Converts `object` to a String by invoking Object.toString and adds the encoding of the result to the target consumer.
  inherited
writeAll(Iterable objects, [String sep = ""]) → void
  Iterates over the given `objects` and `write`s them in sequence.
  inherited
writeCharCode(int charCode) → void
  Writes the character of `charCode`.
  inherited
writeln([Object? object = ""]) → void
  Converts `object` to a String by invoking Object.toString and writes the result to `this`, followed by a newline.
  inherited

## Operators

operator ==(Object other) → bool
  The equality operator.
  inherited