Are there any Dart resources that would split a command-line String into a List<String> of arguments? - shell

Question

Are there any Dart resources that would split a command-line String into a List<String> of arguments?
ArgsParser takes a List<String> of already split arguments usually from main(List<String>).

Answer 1

To answer my own question,
I've converted a Java function I liked into a Dart Converter<String, List<String>) class:
import 'dart:convert';
/// Splits a `String` into a list of command-line argument parts.
/// e.g. "command -p param" -> ["command", "-p", "param"]
///
class CommandlineConverter extends Converter<String, List<String>>
{
#override
List<String> convert(String input)
{
if (input == null || input.isEmpty)
{
//no command? no string
return [];
}
final List<String> result = new List<String>();
var current = "";
String inQuote;
bool lastTokenHasBeenQuoted = false;
for (int index = 0; index < input.length; index++)
{
final token = input[index];
if (inQuote != null)
{
if (token == inQuote)
{
lastTokenHasBeenQuoted = true;
inQuote = null;
}
else
{
current += token;
}
}
else
{
switch (token)
{
case "'": // '
case '"': // ""
inQuote = token;
continue;
case " ": // space
if (lastTokenHasBeenQuoted || current.isNotEmpty)
{
result.add(current);
current = "";
}
break;
default:
current += token;
lastTokenHasBeenQuoted = false;
}
}
}
if (lastTokenHasBeenQuoted || current.isNotEmpty)
{
result.add(current);
}
if (inQuote != null)
{
throw new Exception("Unbalanced quote $inQuote in input:\n$input");
}
return result;
}
}