CommandRunner<T> class Null safety

A class for invoking Commands based on raw command-line arguments.

The type argument T represents the type returned by Command.run and CommandRunner.run; it can be ommitted if you're not using the return values.

Constructors

CommandRunner(String executableName, String description, {int? usageLineLength, int suggestionDistanceLimit = 2})

argParser → ArgParser: The top-level argument parser.
read-only
commands → Map<String, Command<T>>: An unmodifiable view of all top-level commands defined for this runner.
read-only
description → String: A short description of this executable.
final
executableName → String: The name of the executable being run.
final
hashCode → int: The hash code for this object.
read-onlyinherited
invocation → String: A single-line template for how to invoke this executable.
read-only
runtimeType → Type: A representation of the runtime type of the object.
read-onlyinherited
suggestionDistanceLimit → int: The maximum edit distance allowed when suggesting possible intended commands.
final
usage → String: Generates a string displaying usage information for the executable.
read-only
usageFooter → String?: An optional footer for usage.
read-only

addCommand(Command<T> command) → void: Adds Command as a top-level command to this runner.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a non-existent method or property is accessed.
inherited
parse(Iterable<String> args) → ArgResults: Parses args and returns the result, converting an ArgParserException to a UsageException.
printUsage() → void: Prints the usage information for this runner.
run(Iterable<String> args) → Future<T?>: Parses args and invokes Command.run on the chosen command.
runCommand(ArgResults topLevelResults) → Future<T?>: Runs the command specified by topLevelResults.
toString() → String: A string representation of this object.
inherited
usageException(String message) → Never: Throws a UsageException with message.