public bool Read()
{
if (this._sr == null)
{
return(false);
}
// read a line of the log
string line = _sr.ReadLine();
if (line == null)
{
return(false);
}
// obtain the data from each column and put the data array
Lexer l = new Lexer(new StringReader(line));
LexTokenList ll = l.Lex();
int ci = 0; // start at first column
if (ll.Count > 11)
{
ci = 0;
}
foreach (LexToken lt in ll)
{
if (ci >= _Data.Length || lt.Type == LexTokenTypes.EOF)
{
break;
}
if (ci == DATETIME_FIELD)
{
_Data[ci] = GetDateTime(lt.Value);
}
else if (ci == REQUEST_FIELD)
{ // break the request into multiple fields; command, url, http type
string[] reqs = lt.Value.Split(' ');
string req_cmd = null;
string req_url = null;
string req_type = null;
string req_parameters = null;
if (reqs == null)
{
}
else if (reqs.Length >= 3)
{
req_cmd = reqs[0];
req_url = reqs[1];
req_type = reqs[2];
}
else if (reqs.Length == 2)
{
req_cmd = reqs[0];
req_url = reqs[1];
}
else if (reqs.Length == 1)
{
req_url = reqs[0];
}
if (req_url != null)
{
string [] up = req_url.Split('?');
if (up.Length > 1)
{
req_url = up[0];
req_parameters = up[1];
}
}
_Data[ci++] = req_type;
_Data[ci++] = req_url;
_Data[ci++] = req_type == "HTTP/1.1"? "HTTP/1.1": req_type;
_Data[ci++] = req_parameters;
continue;
}
else if (ci == BYTES_FIELD)
{
double v = 0;
if (lt.Value.Length == 0 || lt.Value == "-")
{
}
else
{
try
{
v = Convert.ToDouble(lt.Value);
}
catch
{
}
}
_Data[ci] = v;
}
else
{
_Data[ci] = lt.Value;
}
ci++; // go to next column
}
while (ci < _Data.Length)
{
_Data[ci++] = null;
}
return(true);
}
