public bool Parse()
{
if (_reader.EndOfStream())
{
return(false);
}
_current = new List <string>();
while (true)
{
for (int i = _reader.Position; i < _reader.Length; i++)
{
char c = _reader.Buffer[i];
if (c == '\r' || c == '\n')
{
_current.Add(_reader.GetChars(i));
_reader.Position = i + 1;
if (c == '\r' && _reader.DataAvailable())
{
if (_reader.Buffer[_reader.Position] == '\n')
{
_reader.Position++;
}
}
return(true);
}
else if (c == _fieldDelimiter)
{
_current.Add(_reader.GetChars(i));
_reader.Position = i + 1;
}
}
// Buffer is going to be updated. Save what we need to.
_reader.AppendChars(_reader.Length);
if (!_reader.ReadBuffer())
{
// End of stream
_current.Add(_reader.GetChars(0));
return(true);
}
}
}
public bool Parse()
{
if (_reader.EndOfStream())
{
return(false);
}
_current = new List <string>(8); //todo: should we allow this to be specified?
// 1: begining of field; 2: inside regular field; 3: inside quoted field; 4: end quote or escape
byte state = 1;
while (true)
{
for (int i = _reader.Position; i < _reader.Length; i++)
{
char c = _reader.Buffer[i];
if (state == 1) // 1: begining of field
{
if (c == '\r' || c == '\n')
{
_current.Add(_reader.GetChars(i));
_reader.Position = i + 1;
if (c == '\r' && _reader.DataAvailable())
{
if (_reader.Buffer[_reader.Position] == '\n')
{
_reader.Position++;
}
}
return(true);
}
else if (c == ',')
{
_current.Add(_reader.GetChars(i));
_reader.Position = i + 1;
state = 1;
}
else if (c == '"')
{
_reader.Position = i + 1;
state = 3;
}
else
{
state = 2;
}
}
else if (state == 2) // 2: inside regular field
{
if (c == '\r' || c == '\n')
{
_current.Add(_reader.GetChars(i));
_reader.Position = i + 1;
if (c == '\r' && _reader.DataAvailable())
{
if (_reader.Buffer[_reader.Position] == '\n')
{
_reader.Position++;
}
}
return(true);
}
else if (c == ',')
{
_current.Add(_reader.GetChars(i));
_reader.Position = i + 1;
state = 1;
}
}
else if (state == 3) // 3: inside quoted field
{
if (c == '"')
{
_reader.AppendChars(i);
_reader.Position = i + 1;
state = 4;
}
}
else if (state == 4) // 4: end quote or escape
{
if (c == '\r' || c == '\n')
{
_current.Add(_reader.GetChars(i));
_reader.Position = i + 1;
if (c == '\r' && _reader.DataAvailable())
{
if (_reader.Buffer[_reader.Position] == '\n')
{
_reader.Position++;
}
}
return(true);
}
else if (c == ',')
{
_current.Add(_reader.GetChars(i));
_reader.Position = i + 1;
state = 1;
}
else
{
state = 3;
}
}
}
// Buffer is going to be updated. Save what we need to.
_reader.AppendChars(_reader.Length);
if (!_reader.ReadBuffer())
{
// End of stream
_current.Add(_reader.GetChars(0));
return(true);
}
}
}