protected IEnumerable <string> ReadResponse(ATChat chat)
{
string responsePrefix = Command + ": ";
var lines = new List <string>();
foreach (var line in chat.ReadLines())
{
lines.Add(line);
if (line.StartsWith(responsePrefix))
{
yield return(line.Substring(responsePrefix.Length));
continue;
}
if (line == AT_OK)
{
yield break;
}
if (line.Contains(AT_ERROR))
{
throw new ATCommandException(lines);
}
}
throw new ATCommandException(lines);
}
protected virtual async IAsyncEnumerable <string> ExecuteCore(ATChat chat)
{
await WriteCommand(chat);
await foreach (var line in ReadResponse(chat))
{
yield return(line);
}
}
protected void WriteCommand(ATChat chat)
{
chat.WriteLine("AT" + Command + "=" + string.Join(",", Arguments));
}
protected virtual IEnumerable <string> ExecuteCore(ATChat chat)
{
WriteCommand(chat);
return(ReadResponse(chat));
}
public string[] Execute(Stream stream)
{
var chat = new ATChat(stream);
return(ExecuteCore(chat).ToArray());
}
protected async Task WriteCommand(ATChat chat)
{
await chat.WriteLine("AT" + Command + "=" + string.Join(",", Arguments));
}
public IAsyncEnumerable <string> Execute(Stream stream)
{
var chat = new ATChat(stream);
return(ExecuteCore(chat));
}