public Action Parse(string command, BackgroundTask task)
{
foreach (var c in grammar)
{
var parameterRegex = new Regex(@"\{([\w]+)\}");
var commandPattern = "^" + parameterRegex.Replace(c.Pattern, @"([\w\d': ]+)") + "$";
var regex = new Regex(commandPattern, RegexOptions.IgnoreCase);
var match = regex.Match(command);
if (match.Success)
{
var placeholders = GetPlaceholders(c.Pattern);
var dictionary = new Dictionary <string, string>();
for (int m = 0; m < match.Groups.Count - 1; m++)
{
dictionary.Add(placeholders[m], match.Groups[m + 1].Value);
}
return(() => c.Action(dictionary, task));
}
}
return(null);
}
public void Execute(string command, bool nak = false, bool echo = false)
{
var fragments = command.Split(new string[] { " then " }, StringSplitOptions.RemoveEmptyEntries);
if (fragments.Any(x => IsWaitFor(x)))
{
var taskID = context.Tasks.Count + 1;
var source = new CancellationTokenSource();
var token = source.Token;
var task = new BackgroundTask
{
TaskID = taskID,
Command = command,
CanncelationSource = source,
CancellationToken = token
};
context.Tasks.Add(task);
Task.Run(() =>
{
for (int f = 0; f < fragments.Length; f++)
{
if (!token.IsCancellationRequested)
{
var fragment = fragments[f];
if (fragment == "repeat")
{
f = 0;
fragment = fragments[f];
}
var ok = ExecuteFragment(fragment, task, echo: echo);
if (ok && !IsWaitFor(fragment))
{
Console.WriteLine($"Task {task.TaskID} executed \"{fragment}\"");
}
if (!ok)
{
Console.WriteLine($"Task {task.TaskID} contains a command I don't understand: \"{fragment}\"");
}
}
}
task.Cancelled = token.IsCancellationRequested;
task.Completed = !token.IsCancellationRequested;
if (!token.IsCancellationRequested)
{
Console.WriteLine($"Task {taskID} has completed");
}
}, token);
if (!nak)
{
Console.WriteLine($"Task {taskID} started");
}
}
else
{
var oks = new List <bool>();
foreach (var fragment in fragments)
{
var ok = ExecuteFragment(fragment, echo: echo);
if (!ok)
{
Console.WriteLine($"Sorry, I don't understand \"{fragment}\"");
}
oks.Add(ok);
}
if (!nak && oks.All(x => x))
{
Console.WriteLine("OK");
}
}
}