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Unverified Commit 72ff553a authored by Jonah Williams's avatar Jonah Williams Committed by GitHub
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[flutter_tools] migrate io, process, logger, terminal (#78816)

parent 5a21e2d8
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Showing with 205 additions and 210 deletions
packages/flutter_tools/lib/src/base/io.dart
View file @ 72ff553a
......@@ -2,8 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// @dart = 2.8
/// This file serves as the single point of entry into the `dart:io` APIs
/// within Flutter tools.
///
......@@ -140,7 +138,7 @@ bool _inUnitTest() {
/// Sets the [exit] function to a function that throws an exception rather
/// than exiting the process; this is intended for testing purposes.
@visibleForTesting
void setExitFunctionForTests([ ExitFunction exitFunction ]) {
void setExitFunctionForTests([ ExitFunction? exitFunction ]) {
_exitFunction = exitFunction ?? (int exitCode) {
throw ProcessExit(exitCode, immediate: true);
};
......@@ -235,12 +233,12 @@ class Stdio {
/// dart:io.
@visibleForTesting
Stdio.test({
@required io.Stdout stdout,
@required io.IOSink stderr,
required io.Stdout stdout,
required io.IOSink stderr,
}) : _stdoutOverride = stdout, _stderrOverride = stderr;
io.Stdout _stdoutOverride;
io.IOSink _stderrOverride;
io.Stdout? _stdoutOverride;
io.IOSink? _stderrOverride;
// These flags exist to remember when the done Futures on stdout and stderr
// complete to avoid trying to write to a closed stream sink, which would
......@@ -253,34 +251,34 @@ class Stdio {
@visibleForTesting
io.Stdout get stdout {
if (_stdout != null) {
return _stdout;
return _stdout!;
}
_stdout = _stdoutOverride ?? io.stdout;
_stdout.done.then(
_stdout!.done.then(
(void _) { _stdoutDone = true; },
onError: (Object err, StackTrace st) { _stdoutDone = true; },
);
return _stdout;
return _stdout!;
}
io.Stdout _stdout;
io.Stdout? _stdout;
@visibleForTesting
io.IOSink get stderr {
if (_stderr != null) {
return _stderr;
return _stderr!;
}
_stderr = _stderrOverride ?? io.stderr;
_stderr.done.then(
_stderr!.done.then(
(void _) { _stderrDone = true; },
onError: (Object err, StackTrace st) { _stderrDone = true; },
);
return _stderr;
return _stderr!;
}
io.IOSink _stderr;
io.IOSink? _stderr;
bool get hasTerminal => io.stdout.hasTerminal;
static bool _stdinHasTerminal;
static bool? _stdinHasTerminal;
/// Determines whether there is a terminal attached.
///
......@@ -290,7 +288,7 @@ class Stdio {
/// runtime errors such as "inappropriate ioctl for device" if not handled.
bool get stdinHasTerminal {
if (_stdinHasTerminal != null) {
return _stdinHasTerminal;
return _stdinHasTerminal!;
}
if (stdin is! io.Stdin) {
return _stdinHasTerminal = false;
......@@ -309,15 +307,15 @@ class Stdio {
return _stdinHasTerminal = true;
}
int get terminalColumns => hasTerminal ? stdout.terminalColumns : null;
int get terminalLines => hasTerminal ? stdout.terminalLines : null;
int? get terminalColumns => hasTerminal ? stdout.terminalColumns : null;
int? get terminalLines => hasTerminal ? stdout.terminalLines : null;
bool get supportsAnsiEscapes => hasTerminal && stdout.supportsAnsiEscapes;
/// Writes [message] to [stderr], falling back on [fallback] if the write
/// throws any exception. The default fallback calls [print] on [message].
void stderrWrite(
String message, {
void Function(String, dynamic, StackTrace) fallback,
void Function(String, dynamic, StackTrace)? fallback,
}) {
if (!_stderrDone) {
_stdioWrite(stderr, message, fallback: fallback);
......@@ -334,7 +332,7 @@ class Stdio {
/// throws any exception. The default fallback calls [print] on [message].
void stdoutWrite(
String message, {
void Function(String, dynamic, StackTrace) fallback,
void Function(String, dynamic, StackTrace)? fallback,
}) {
if (!_stdoutDone) {
_stdioWrite(stdout, message, fallback: fallback);
......@@ -349,7 +347,7 @@ class Stdio {
// Helper for [stderrWrite] and [stdoutWrite].
void _stdioWrite(io.IOSink sink, String message, {
void Function(String, dynamic, StackTrace) fallback,
void Function(String, dynamic, StackTrace)? fallback,
}) {
asyncGuard<void>(() async {
sink.write(message);
......@@ -447,7 +445,7 @@ typedef NetworkInterfaceLister = Future<List<NetworkInterface>> Function({
io.InternetAddressType type,
});
NetworkInterfaceLister _networkInterfaceListerOverride;
NetworkInterfaceLister? _networkInterfaceListerOverride;
// Tests can set up a non-default network interface lister.
@visibleForTesting
......@@ -469,7 +467,7 @@ Future<List<NetworkInterface>> listNetworkInterfaces({
io.InternetAddressType type = io.InternetAddressType.any,
}) async {
if (_networkInterfaceListerOverride != null) {
return _networkInterfaceListerOverride(
return _networkInterfaceListerOverride!.call(
includeLoopback: includeLoopback,
includeLinkLocal: includeLinkLocal,
type: type,
......
packages/flutter_tools/lib/src/base/logger.dart
View file @ 72ff553a
......@@ -2,8 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// @dart = 2.8
import 'dart:async';
import 'package:meta/meta.dart';
......@@ -65,12 +63,12 @@ abstract class Logger {
/// `outputPreferences.wrapText` setting.
void printError(
String message, {
StackTrace stackTrace,
bool emphasis,
TerminalColor color,
int indent,
int hangingIndent,
bool wrap,
StackTrace? stackTrace,
bool? emphasis,
TerminalColor? color,
int? indent,
int? hangingIndent,
bool? wrap,
});
/// Display normal output of the command. This should be used for things like
......@@ -103,12 +101,12 @@ abstract class Logger {
/// `outputPreferences.wrapText` setting.
void printStatus(
String message, {
bool emphasis,
TerminalColor color,
bool newline,
int indent,
int hangingIndent,
bool wrap,
bool? emphasis,
TerminalColor? color,
bool? newline,
int? indent,
int? hangingIndent,
bool? wrap,
});
/// Use this for verbose tracing output. Users can turn this output on in order
......@@ -126,20 +124,20 @@ abstract class Logger {
/// between the `message` and the progress indicator, if any.
Status startProgress(
String message, {
String progressId,
String? progressId,
bool multilineOutput = false,
int progressIndicatorPadding = kDefaultStatusPadding,
});
/// A [SilentStatus] or an [AnsiSpinner] (depending on whether the
/// terminal is fancy enough), already started.
Status startSpinner({ VoidCallback onFinish });
Status startSpinner({ VoidCallback? onFinish });
/// Send an event to be emitted.
///
/// Only surfaces a value in machine modes, Loggers may ignore this message in
/// non-machine modes.
void sendEvent(String name, [Map<String, dynamic> args]) { }
void sendEvent(String name, [Map<String, dynamic>? args]) { }
/// Clears all output.
void clear();
......@@ -174,7 +172,14 @@ class DelegatingLogger implements Logger {
bool get isVerbose => _delegate.isVerbose;
@override
void printError(String message, {StackTrace stackTrace, bool emphasis, TerminalColor color, int indent, int hangingIndent, bool wrap}) {
void printError(String message, {
StackTrace? stackTrace,
bool? emphasis,
TerminalColor? color,
int? indent,
int? hangingIndent,
bool? wrap,
}) {
_delegate.printError(
message,
stackTrace: stackTrace,
......@@ -187,7 +192,14 @@ class DelegatingLogger implements Logger {
}
@override
void printStatus(String message, {bool emphasis, TerminalColor color, bool newline, int indent, int hangingIndent, bool wrap}) {
void printStatus(String message, {
bool? emphasis,
TerminalColor? color,
bool? newline,
int? indent,
int? hangingIndent,
bool? wrap,
}) {
_delegate.printStatus(message,
emphasis: emphasis,
color: color,
......@@ -204,12 +216,16 @@ class DelegatingLogger implements Logger {
}
@override
void sendEvent(String name, [Map<String, dynamic> args]) {
void sendEvent(String name, [Map<String, dynamic>? args]) {
_delegate.sendEvent(name, args);
}
@override
Status startProgress(String message, {String progressId, bool multilineOutput = false, int progressIndicatorPadding = kDefaultStatusPadding}) {
Status startProgress(String message, {
String? progressId,
bool multilineOutput = false,
int progressIndicatorPadding = kDefaultStatusPadding,
}) {
return _delegate.startProgress(message,
progressId: progressId,
multilineOutput: multilineOutput,
......@@ -218,7 +234,7 @@ class DelegatingLogger implements Logger {
}
@override
Status startSpinner({VoidCallback onFinish}) {
Status startSpinner({VoidCallback? onFinish}) {
return _delegate.startSpinner(onFinish: onFinish);
}
......@@ -240,7 +256,7 @@ T asLogger<T extends Logger>(Logger logger) {
if (logger is T) {
return logger;
} else if (logger is DelegatingLogger) {
logger = (logger as DelegatingLogger)._delegate;
logger = logger._delegate;
} else {
throw StateError('$original has no ancestor delegate of type $T');
}
......@@ -249,9 +265,9 @@ T asLogger<T extends Logger>(Logger logger) {
class StdoutLogger extends Logger {
StdoutLogger({
@required this.terminal,
@required Stdio stdio,
@required OutputPreferences outputPreferences,
required this.terminal,
required Stdio stdio,
required OutputPreferences outputPreferences,
StopwatchFactory stopwatchFactory = const StopwatchFactory(),
})
: _stdio = stdio,
......@@ -265,7 +281,7 @@ class StdoutLogger extends Logger {
final Stdio _stdio;
final StopwatchFactory _stopwatchFactory;
Status _status;
Status? _status;
@override
bool get isVerbose => false;
......@@ -279,15 +295,14 @@ class StdoutLogger extends Logger {
@override
void printError(
String message, {
StackTrace stackTrace,
bool emphasis,
TerminalColor color,
int indent,
int hangingIndent,
bool wrap,
StackTrace? stackTrace,
bool? emphasis,
TerminalColor? color,
int? indent,
int? hangingIndent,
bool? wrap,
}) {
_status?.pause();
message ??= '';
message = wrapText(message,
indent: indent,
hangingIndent: hangingIndent,
......@@ -308,15 +323,14 @@ class StdoutLogger extends Logger {
@override
void printStatus(
String message, {
bool emphasis,
TerminalColor color,
bool newline,
int indent,
int hangingIndent,
bool wrap,
bool? emphasis,
TerminalColor? color,
bool? newline,
int? indent,
int? hangingIndent,
bool? wrap,
}) {
_status?.pause();
message ??= '';
message = wrapText(message,
indent: indent,
hangingIndent: hangingIndent,
......@@ -348,11 +362,10 @@ class StdoutLogger extends Logger {
@override
Status startProgress(
String message, {
String progressId,
String? progressId,
bool multilineOutput = false,
int progressIndicatorPadding = kDefaultStatusPadding,
}) {
assert(progressIndicatorPadding != null);
if (_status != null) {
// Ignore nested progresses; return a no-op status object.
return SilentStatus(
......@@ -379,11 +392,11 @@ class StdoutLogger extends Logger {
stopwatch: _stopwatchFactory.createStopwatch(),
)..start();
}
return _status;
return _status!;
}
@override
Status startSpinner({ VoidCallback onFinish }) {
Status startSpinner({ VoidCallback? onFinish }) {
if (terminal.supportsColor) {
return AnsiSpinner(
onFinish: onFinish,
......@@ -403,7 +416,7 @@ class StdoutLogger extends Logger {
}
@override
void sendEvent(String name, [Map<String, dynamic> args]) { }
void sendEvent(String name, [Map<String, dynamic>? args]) { }
@override
void clear() {
......@@ -423,9 +436,9 @@ class StdoutLogger extends Logger {
/// they will show up as the unrepresentable character symbol '�'.
class WindowsStdoutLogger extends StdoutLogger {
WindowsStdoutLogger({
@required Terminal terminal,
@required Stdio stdio,
@required OutputPreferences outputPreferences,
required Terminal terminal,
required Stdio stdio,
required OutputPreferences outputPreferences,
StopwatchFactory stopwatchFactory = const StopwatchFactory(),
}) : super(
terminal: terminal,
......@@ -451,16 +464,16 @@ class WindowsStdoutLogger extends StdoutLogger {
class BufferLogger extends Logger {
BufferLogger({
@required this.terminal,
@required OutputPreferences outputPreferences,
required this.terminal,
required OutputPreferences outputPreferences,
StopwatchFactory stopwatchFactory = const StopwatchFactory(),
}) : _outputPreferences = outputPreferences,
_stopwatchFactory = stopwatchFactory;
/// Create a [BufferLogger] with test preferences.
BufferLogger.test({
Terminal terminal,
OutputPreferences outputPreferences,
Terminal? terminal,
OutputPreferences? outputPreferences,
}) : terminal = terminal ?? Terminal.test(),
_outputPreferences = outputPreferences ?? OutputPreferences.test(),
_stopwatchFactory = const StopwatchFactory();
......@@ -496,12 +509,12 @@ class BufferLogger extends Logger {
@override
void printError(
String message, {
StackTrace stackTrace,
bool emphasis,
TerminalColor color,
int indent,
int hangingIndent,
bool wrap,
StackTrace? stackTrace,
bool? emphasis,
TerminalColor? color,
int? indent,
int? hangingIndent,
bool? wrap,
}) {
_error.writeln(terminal.color(
wrapText(message,
......@@ -517,12 +530,12 @@ class BufferLogger extends Logger {
@override
void printStatus(
String message, {
bool emphasis,
TerminalColor color,
bool newline,
int indent,
int hangingIndent,
bool wrap,
bool? emphasis,
TerminalColor? color,
bool? newline,
int? indent,
int? hangingIndent,
bool? wrap,
}) {
if (newline != false) {
_status.writeln(wrapText(message,
......@@ -547,7 +560,7 @@ class BufferLogger extends Logger {
@override
Status startProgress(
String message, {
String progressId,
String? progressId,
bool multilineOutput = false,
int progressIndicatorPadding = kDefaultStatusPadding,
}) {
......@@ -559,7 +572,7 @@ class BufferLogger extends Logger {
}
@override
Status startSpinner({VoidCallback onFinish}) {
Status startSpinner({VoidCallback? onFinish}) {
return SilentStatus(
stopwatch: _stopwatchFactory.createStopwatch(),
onFinish: onFinish,
......@@ -575,8 +588,8 @@ class BufferLogger extends Logger {
}
@override
void sendEvent(String name, [Map<String, dynamic> args]) {
_events.write(json.encode(<String, Object>{
void sendEvent(String name, [Map<String, dynamic>? args]) {
_events.write(json.encode(<String, Object?>{
'name': name,
'args': args
}));
......@@ -602,12 +615,12 @@ class VerboseLogger extends DelegatingLogger {
@override
void printError(
String message, {
StackTrace stackTrace,
bool emphasis,
TerminalColor color,
int indent,
int hangingIndent,
bool wrap,
StackTrace? stackTrace,
bool? emphasis,
TerminalColor? color,
int? indent,
int? hangingIndent,
bool? wrap,
}) {
_emit(
_LogType.error,
......@@ -624,12 +637,12 @@ class VerboseLogger extends DelegatingLogger {
@override
void printStatus(
String message, {
bool emphasis,
TerminalColor color,
bool newline,
int indent,
int hangingIndent,
bool wrap,
bool? emphasis,
TerminalColor? color,
bool? newline,
int? indent,
int? hangingIndent,
bool? wrap,
}) {
_emit(_LogType.status, wrapText(message,
indent: indent,
......@@ -647,7 +660,7 @@ class VerboseLogger extends DelegatingLogger {
@override
Status startProgress(
String message, {
String progressId,
String? progressId,
bool multilineOutput = false,
int progressIndicatorPadding = kDefaultStatusPadding,
}) {
......@@ -669,7 +682,7 @@ class VerboseLogger extends DelegatingLogger {
)..start();
}
void _emit(_LogType type, String message, [ StackTrace stackTrace ]) {
void _emit(_LogType type, String message, [ StackTrace? stackTrace ]) {
if (message.trim().isEmpty) {
return;
}
......@@ -705,7 +718,7 @@ class VerboseLogger extends DelegatingLogger {
}
@override
void sendEvent(String name, [Map<String, dynamic> args]) { }
void sendEvent(String name, [Map<String, dynamic>? args]) { }
}
class PrefixedErrorLogger extends DelegatingLogger {
......@@ -714,14 +727,14 @@ class PrefixedErrorLogger extends DelegatingLogger {
@override
void printError(
String message, {
StackTrace stackTrace,
bool emphasis,
TerminalColor color,
int indent,
int hangingIndent,
bool wrap,
StackTrace? stackTrace,
bool? emphasis,
TerminalColor? color,
int? indent,
int? hangingIndent,
bool? wrap,
}) {
if (message?.trim()?.isNotEmpty == true) {
if (message.trim().isNotEmpty == true) {
message = 'ERROR: $message';
}
super.printError(
......@@ -760,10 +773,10 @@ typedef SlowWarningCallback = String Function();
abstract class Status {
Status({
this.onFinish,
@required Stopwatch stopwatch,
required Stopwatch stopwatch,
}) : _stopwatch = stopwatch;
final VoidCallback onFinish;
final VoidCallback? onFinish;
@protected
final Stopwatch _stopwatch;
......@@ -802,17 +815,15 @@ abstract class Status {
void finish() {
assert(_stopwatch.isRunning);
_stopwatch.stop();
if (onFinish != null) {
onFinish();
}
onFinish?.call();
}
}
/// A [SilentStatus] shows nothing.
class SilentStatus extends Status {
SilentStatus({
@required Stopwatch stopwatch,
VoidCallback onFinish,
required Stopwatch stopwatch,
VoidCallback? onFinish,
}) : super(
onFinish: onFinish,
stopwatch: stopwatch,
......@@ -820,9 +831,7 @@ class SilentStatus extends Status {
@override
void finish() {
if (onFinish != null) {
onFinish();
}
onFinish?.call();
}
}
......@@ -831,13 +840,11 @@ class SilentStatus extends Status {
class SummaryStatus extends Status {
SummaryStatus({
this.message = '',
@required Stopwatch stopwatch,
required Stopwatch stopwatch,
this.padding = kDefaultStatusPadding,
VoidCallback onFinish,
@required Stdio stdio,
}) : assert(message != null),
assert(padding != null),
_stdio = stdio,
VoidCallback? onFinish,
required Stdio stdio,
}) : _stdio = stdio,
super(
onFinish: onFinish,
stopwatch: stopwatch,
......@@ -899,10 +906,10 @@ class SummaryStatus extends Status {
/// terminal spinner. When stopped or canceled, the animation erases itself.
class AnsiSpinner extends Status {
AnsiSpinner({
@required Stopwatch stopwatch,
@required Terminal terminal,
VoidCallback onFinish,
@required Stdio stdio,
required Stopwatch stopwatch,
required Terminal terminal,
VoidCallback? onFinish,
required Stdio stdio,
}) : _stdio = stdio,
_terminal = terminal,
super(
......@@ -918,7 +925,7 @@ class AnsiSpinner extends Status {
bool timedOut = false;
int ticks = 0;
Timer timer;
Timer? timer;
// Windows console font has a limited set of Unicode characters.
List<String> get _animation => !_terminal.supportsEmoji
......@@ -945,7 +952,7 @@ class AnsiSpinner extends Status {
void _startSpinner() {
_writeToStdOut(_clear); // for _callback to backspace over
timer = Timer.periodic(const Duration(milliseconds: 100), _callback);
_callback(timer);
_callback(timer!);
}
void _callback(Timer timer) {
......@@ -960,8 +967,8 @@ class AnsiSpinner extends Status {
@override
void finish() {
assert(timer != null);
assert(timer.isActive);
timer.cancel();
assert(timer!.isActive);
timer?.cancel();
timer = null;
_clearSpinner();
super.finish();
......@@ -974,15 +981,15 @@ class AnsiSpinner extends Status {
@override
void pause() {
assert(timer != null);
assert(timer.isActive);
assert(timer!.isActive);
_clearSpinner();
timer.cancel();
timer?.cancel();
}
@override
void resume() {
assert(timer != null);
assert(!timer.isActive);
assert(!timer!.isActive);
_startSpinner();
}
}
......@@ -1000,10 +1007,10 @@ class AnsiStatus extends AnsiSpinner {
this.message = '',
this.multilineOutput = false,
this.padding = kDefaultStatusPadding,
@required Stopwatch stopwatch,
@required Terminal terminal,
VoidCallback onFinish,
Stdio stdio,
required Stopwatch stopwatch,
required Terminal terminal,
VoidCallback? onFinish,
required Stdio stdio,
}) : assert(message != null),
assert(multilineOutput != null),
assert(padding != null),
......@@ -1023,7 +1030,7 @@ class AnsiStatus extends AnsiSpinner {
@override
int get spinnerIndent => _kTimePadding - 1;
int _totalMessageLength;
int _totalMessageLength = 0;
@override
void start() {
......
packages/flutter_tools/lib/src/base/process.dart
View file @ 72ff553a
......@@ -2,11 +2,8 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// @dart = 2.8
import 'dart:async';
import 'package:meta/meta.dart';
import 'package:process/process.dart';
import '../convert.dart';
......@@ -27,7 +24,7 @@ typedef ShutdownHook = FutureOr<dynamic> Function();
abstract class ShutdownHooks {
factory ShutdownHooks({
@required Logger logger,
required Logger logger,
}) => _DefaultShutdownHooks(
logger: logger,
);
......@@ -49,7 +46,7 @@ abstract class ShutdownHooks {
class _DefaultShutdownHooks implements ShutdownHooks {
_DefaultShutdownHooks({
@required Logger logger,
required Logger logger,
}) : _logger = logger;
final Logger _logger;
......@@ -137,8 +134,8 @@ typedef RunResultChecker = bool Function(int);
abstract class ProcessUtils {
factory ProcessUtils({
@required ProcessManager processManager,
@required Logger logger,
required ProcessManager processManager,
required Logger logger,
}) => _DefaultProcessUtils(
processManager: processManager,
logger: logger,
......@@ -236,8 +233,8 @@ abstract class ProcessUtils {
class _DefaultProcessUtils implements ProcessUtils {
_DefaultProcessUtils({
@required ProcessManager processManager,
@required Logger logger,
required ProcessManager processManager,
required Logger logger,
}) : _processManager = processManager,
_logger = logger;
......@@ -249,11 +246,11 @@ class _DefaultProcessUtils implements ProcessUtils {
Future<RunResult> run(
List<String> cmd, {
bool throwOnError = false,
RunResultChecker allowedFailures,
String workingDirectory,
RunResultChecker? allowedFailures,
String? workingDirectory,
bool allowReentrantFlutter = false,
Map<String, String> environment,
Duration timeout,
Map<String, String>? environment,
Duration? timeout,
int timeoutRetries = 0,
}) async {
if (cmd == null || cmd.isEmpty) {
......@@ -305,8 +302,8 @@ class _DefaultProcessUtils implements ProcessUtils {
.listen(stderrBuffer.write)
.asFuture<void>(null);
int exitCode;
exitCode = await process.exitCode.timeout(timeout, onTimeout: () {
int? exitCode;
exitCode = await process.exitCode.then<int?>((int x) => x).timeout(timeout, onTimeout: () {
// The process timed out. Kill it.
_processManager.killPid(process.pid);
return null;
......@@ -324,7 +321,7 @@ class _DefaultProcessUtils implements ProcessUtils {
stdioFuture = stdioFuture.timeout(const Duration(seconds: 1));
}
await stdioFuture;
} on Exception catch (_) {
} on Exception {
// Ignore errors on the process' stdout and stderr streams. Just capture
// whatever we got, and use the exit code
}
......@@ -365,10 +362,10 @@ class _DefaultProcessUtils implements ProcessUtils {
List<String> cmd, {
bool throwOnError = false,
bool verboseExceptions = false,
RunResultChecker allowedFailures,
RunResultChecker? allowedFailures,
bool hideStdout = false,
String workingDirectory,
Map<String, String> environment,
String? workingDirectory,
Map<String, String>? environment,
bool allowReentrantFlutter = false,
Encoding encoding = systemEncoding,
}) {
......@@ -420,9 +417,9 @@ class _DefaultProcessUtils implements ProcessUtils {
@override
Future<Process> start(
List<String> cmd, {
String workingDirectory,
String? workingDirectory,
bool allowReentrantFlutter = false,
Map<String, String> environment,
Map<String, String>? environment,
}) {
_traceCommand(cmd, workingDirectory: workingDirectory);
return _processManager.start(
......@@ -435,14 +432,14 @@ class _DefaultProcessUtils implements ProcessUtils {
@override
Future<int> stream(
List<String> cmd, {
String workingDirectory,
String? workingDirectory,
bool allowReentrantFlutter = false,
String prefix = '',
bool trace = false,
RegExp filter,
RegExp stdoutErrorMatcher,
StringConverter mapFunction,
Map<String, String> environment,
RegExp? filter,
RegExp? stdoutErrorMatcher,
StringConverter? mapFunction,
Map<String, String>? environment,
}) async {
final Process process = await start(
cmd,
......@@ -503,7 +500,7 @@ class _DefaultProcessUtils implements ProcessUtils {
@override
bool exitsHappySync(
List<String> cli, {
Map<String, String> environment,
Map<String, String>? environment,
}) {
_traceCommand(cli);
if (!_processManager.canRun(cli.first)) {
......@@ -522,7 +519,7 @@ class _DefaultProcessUtils implements ProcessUtils {
@override
Future<bool> exitsHappy(
List<String> cli, {
Map<String, String> environment,
Map<String, String>? environment,
}) async {
_traceCommand(cli);
if (!_processManager.canRun(cli.first)) {
......@@ -538,8 +535,8 @@ class _DefaultProcessUtils implements ProcessUtils {
}
}
Map<String, String> _environment(bool allowReentrantFlutter, [
Map<String, String> environment,
Map<String, String>? _environment(bool allowReentrantFlutter, [
Map<String, String>? environment,
]) {
if (allowReentrantFlutter) {
if (environment == null) {
......@@ -552,7 +549,7 @@ class _DefaultProcessUtils implements ProcessUtils {
return environment;
}
void _traceCommand(List<String> args, { String workingDirectory }) {
void _traceCommand(List<String> args, { String? workingDirectory }) {
final String argsText = args.join(' ');
if (workingDirectory == null) {
_logger.printTrace('executing: $argsText');
......
packages/flutter_tools/lib/src/base/terminal.dart
View file @ 72ff553a
......@@ -2,10 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// @dart = 2.8
import 'package:meta/meta.dart';
import '../convert.dart';
import 'io.dart' as io;
import 'logger.dart';
......@@ -25,12 +21,12 @@ enum TerminalColor {
/// console.
class OutputPreferences {
OutputPreferences({
bool wrapText,
int wrapColumn,
bool showColor,
io.Stdio stdio,
bool? wrapText,
int? wrapColumn,
bool? showColor,
io.Stdio? stdio,
}) : _stdio = stdio,
wrapText = wrapText ?? stdio.hasTerminal,
wrapText = wrapText ?? stdio?.hasTerminal ?? false,
_overrideWrapColumn = wrapColumn,
showColor = showColor ?? false;
......@@ -38,7 +34,7 @@ class OutputPreferences {
OutputPreferences.test({this.wrapText = false, int wrapColumn = kDefaultTerminalColumns, this.showColor = false})
: _overrideWrapColumn = wrapColumn, _stdio = null;
final io.Stdio _stdio;
final io.Stdio? _stdio;
/// If [wrapText] is true, then any text sent to the context's [Logger]
/// instance (e.g. from the [printError] or [printStatus] functions) will be
......@@ -56,7 +52,7 @@ class OutputPreferences {
/// (e.g. from the [printError] or [printStatus] functions) will be wrapped.
/// Ignored if [wrapText] is false. Defaults to the width of the output
/// terminal, or to [kDefaultTerminalColumns] if not writing to a terminal.
final int _overrideWrapColumn;
final int? _overrideWrapColumn;
int get wrapColumn {
return _overrideWrapColumn ?? _stdio?.terminalColumns ?? kDefaultTerminalColumns;
}
......@@ -136,17 +132,17 @@ abstract class Terminal {
/// If [usesTerminalUi] is false, throws a [StateError].
Future<String> promptForCharInput(
List<String> acceptedCharacters, {
@required Logger logger,
String prompt,
int defaultChoiceIndex,
required Logger logger,
String? prompt,
int? defaultChoiceIndex,
bool displayAcceptedCharacters = true,
});
}
class AnsiTerminal implements Terminal {
AnsiTerminal({
@required io.Stdio stdio,
@required Platform platform,
required io.Stdio stdio,
required Platform platform,
})
: _stdio = stdio,
_platform = platform;
......@@ -178,10 +174,10 @@ class AnsiTerminal implements Terminal {
TerminalColor.grey: grey,
};
static String colorCode(TerminalColor color) => _colorMap[color];
static String colorCode(TerminalColor color) => _colorMap[color]!;
@override
bool get supportsColor => _platform?.stdoutSupportsAnsi ?? false;
bool get supportsColor => _platform.stdoutSupportsAnsi;
// Assume unicode emojis are supported when not on Windows.
// If we are on Windows, unicode emojis are supported in Windows Terminal,
......@@ -236,7 +232,7 @@ class AnsiTerminal implements Terminal {
return message;
}
final StringBuffer buffer = StringBuffer();
final String colorCodes = _colorMap[color];
final String colorCodes = _colorMap[color]!;
for (String line in message.split('\n')) {
// If there were resets in the string before, then keep them, but
// restart the color right after. This prevents embedded resets from
......@@ -273,26 +269,23 @@ class AnsiTerminal implements Terminal {
@override
bool get stdinHasTerminal => _stdio.stdinHasTerminal;
Stream<String> _broadcastStdInString;
Stream<String>? _broadcastStdInString;
@override
Stream<String> get keystrokes {
_broadcastStdInString ??= _stdio.stdin.transform<String>(const AsciiDecoder(allowInvalid: true)).asBroadcastStream();
return _broadcastStdInString;
return _broadcastStdInString ??= _stdio.stdin.transform<String>(const AsciiDecoder(allowInvalid: true)).asBroadcastStream();
}
@override
Future<String> promptForCharInput(
List<String> acceptedCharacters, {
@required Logger logger,
String prompt,
int defaultChoiceIndex,
required Logger logger,
String? prompt,
int? defaultChoiceIndex,
bool displayAcceptedCharacters = true,
}) async {
assert(acceptedCharacters != null);
assert(acceptedCharacters.isNotEmpty);
assert(prompt == null || prompt.isNotEmpty);
assert(displayAcceptedCharacters != null);
if (!usesTerminalUi) {
throw StateError('cannot prompt without a terminal ui');
}
......@@ -303,7 +296,7 @@ class AnsiTerminal implements Terminal {
charactersToDisplay[defaultChoiceIndex] = bolden(charactersToDisplay[defaultChoiceIndex]);
acceptedCharacters.add('');
}
String choice;
String? choice;
singleCharMode = true;
while (choice == null || choice.length > 1 || !acceptedCharacters.contains(choice)) {
if (prompt != null) {
......@@ -329,7 +322,7 @@ class _TestTerminal implements Terminal {
_TestTerminal({this.supportsColor = false, this.supportsEmoji = false});
@override
bool usesTerminalUi;
bool usesTerminalUi = false;
@override
String bolden(String message) => message;
......@@ -345,9 +338,9 @@ class _TestTerminal implements Terminal {
@override
Future<String> promptForCharInput(List<String> acceptedCharacters, {
@required Logger logger,
String prompt,
int defaultChoiceIndex,
required Logger logger,
String? prompt,
int? defaultChoiceIndex,
bool displayAcceptedCharacters = true,
}) {
throw UnsupportedError('promptForCharInput not supported in the test terminal.');
......
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