/// <summary>
/// Extrae un campo ascii con formato.
/// </summary>
/// <param name="cmd"></param>
/// <param name="length"></param>
/// <param name="optional"></param>
/// <returns></returns>
protected string Extract_P(BinReader cmd, int length, bool optional)
{
_ = length;
_ = optional;
SkipFieldSep(cmd);
var sb = new StringBuilder();
while (!cmd.EOC)
{
if (cmd.PeekNext() == FLD)
{
if (cmd.PeekNext(1) != FLD)
{
break;
}
cmd.ReadNext(); // Read the escaped FLD
}
sb.Append((char)cmd.ReadNext());
}
return(sb.ToString());
}
/// <summary>
/// Saltea un 'posible' separador de campo.
/// </summary>
///
/// <param name="cmd">el lector del comando</param>
private void SkipFieldSep(BinReader cmd)
{
if (cmd.ReadNext() != FLD)
{
throw new ArgumentException("Esperaba separador FLD");
}
}
/// <summary>
/// Extrae un campo si/no.
/// </summary>
/// <param name="cmd"></param>
/// <param name="length"></param>
/// <param name="optional"></param>
/// <returns></returns>
protected bool Extract_Y(BinReader cmd, int length, bool optional)
{
_ = length;
_ = optional;
SkipFieldSep(cmd);
if (!cmd.EOC && cmd.PeekNext() != FLD)
{
char ch = (char)cmd.ReadNext();
return(ch != 'n' && ch != 'N');
}
return(false);
}
/// <summary>
/// Extrae un campo Binario.
/// </summary>
/// <param name="cmd"></param>
/// <param name="length"></param>
/// <param name="optional"></param>
/// <returns></returns>
protected byte[] Extract_B(BinReader cmd, int length, bool optional)
{
_ = length;
_ = optional;
var result = new List <byte>();
while (!cmd.EOC && cmd.PeekNext() != FLD)
{
result.Add(cmd.ReadNext());
}
return(result.ToArray());
}
/// <summary>
/// Extrae un campo de texto enriquecido.
/// </summary>
/// <param name="cmd"></param>
/// <param name="length"></param>
/// <param name="optional"></param>
/// <returns></returns>
protected string Extract_RT(BinReader cmd, int length, bool optional)
{
_ = length;
_ = optional;
SkipFieldSep(cmd);
var sb = new StringBuilder();
while (!cmd.EOC && cmd.PeekNext() != FLD)
{
sb.Append((char)cmd.ReadNext());
}
return(sb.ToString());
}
/// <summary>
/// Parse las partes comunes de todas las respuestas a comandos.
/// </summary>
///
/// <param name="cmd">El lector de comandos.</param>
protected void ParseAnswerHeader(BinReader cmd)
{
cmd.Ptr = 1;
printerStatus = cmd.ReadNext() * 0x100 + cmd.ReadNext();
SkipFieldSep(cmd);
fiscalStatus = cmd.ReadNext() * 0x100 + cmd.ReadNext();
SkipFieldSep(cmd); // Reserved 1
SkipFieldSep(cmd);
errorCode = cmd.ReadNext() * 0x100 + cmd.ReadNext();
if (errorCode != 0)
{
this.Error = "Codigo: 0x" + errorCode.ToString("X").PadLeft(4, '0');
}
SkipFieldSep(cmd); // Reserved 1
}
