public static bool TryParse(string data, out FileLine fileLine)
{
fileLine = None;
if (string.IsNullOrEmpty(data))
{
return(false);
}
var parts = data.Split('.');
if (parts.Length != 2)
{
return(false);
}
if (!int.TryParse(parts[0], out var number))
{
return(false);
}
var name = parts[1].TrimStart();
if (string.IsNullOrEmpty(name))
{
return(false);
}
fileLine = new FileLine(number, name, sizeof(int) + name.Length);
return(true);
}
public static bool TryParse(StreamReader streamReader, out FileLine fileLine)
{
fileLine = None;
if (streamReader.EndOfStream)
{
return(false);
}
while (!streamReader.EndOfStream && char.IsWhiteSpace((char)streamReader.Peek()))
{
streamReader.Read();
}
char current;
int size = 0;
int number = 0;
while (!streamReader.EndOfStream && (current = (char)streamReader.Read()) != '.' && size <= _maxNumberLength)
{
if (!char.IsNumber(current))
{
return(false);
}
int numberPart = current - '0';
if (number == _maxNumberDivTen && numberPart > _maxNumberModTen)
{
return(false);
}
number = number * 10 + numberPart;
size++;
}
if (streamReader.EndOfStream)
{
return(false);
}
while (!streamReader.EndOfStream && char.IsWhiteSpace((char)streamReader.Peek()))
{
streamReader.Read();
}
var name = streamReader.ReadLine();
if (string.IsNullOrEmpty(name))
{
return(false);
}
fileLine = new FileLine(number, name, sizeof(int) + name.Length);
return(true);
}