public DummyData(LineConstructor constructor, Encoding encoding, byte[] separator)
{
someField = default;
extraFields = default;
SetFromLineConstructor(constructor, encoding, separator);
}
private unsafe void SetFromLineConstructor(LineConstructor constructor, Encoding encoding, byte[] separator)
{
fixed(byte *from = constructor.buffer)
{
var start = from;
var length = constructor.length;
var column = 0;
while (true)
{
var line = new ReadOnlySpan <byte>(start, length);
var next = line.IndexOf(separator);
if (next == -1)
{
if (line.IndexOf(Constants.CarriageReturn) > -1)
{
C = new StringField(start, length - 2, encoding);
}
else if (line.IndexOf(Constants.LineFeed) > -1)
{
C = new StringField(start, length - 1, encoding);
}
else
{
C = new StringField(start, length, encoding);
}
break;
}
var consumed = next + separator.Length;
length -= next + separator.Length;
switch (column)
{
case 0:
A = new StringField(start, next, encoding);
break;
case 1:
B = new StringField(start, next, encoding);
break;
case 2:
C = new StringField(start, next, encoding);
break;
default:
ExtraFields = ExtraFields.Initialized
? ExtraFields.AddLength(next)
: new StringField(start, next, encoding);
break;
}
start += consumed;
column++;
}
}
}
public RowLayout(LineConstructor constructor, Encoding encoding, byte[] separator)
{
A = default;
B = default;
C = default;
ExtraFields = default;
SetFromLineConstructor(constructor, encoding, separator);
}
public PersonLayout(LineConstructor constructor, Encoding encoding, byte[] separator)
{
Name = default;
Welcome = default;
ExtraFields = default;
Fields = 0;
LineNumber = constructor.lineNumber;
SetFromLineConstructor(constructor, encoding, separator);
}
public unsafe void SetFromLineConstructor(LineConstructor constructor, Encoding encoding, byte[] separator)
{
fixed(byte *from = constructor.buffer)
{
var start = from;
var length = constructor.length;
var fields = 0;
while (true)
{
var line = new ReadOnlySpan <byte>(start, length);
var next = line.IndexOf(separator);
if (next == -1)
{
if (line.IndexOf((byte)'\r') > -1)
{
length -= 2;
}
else if (line.IndexOf((byte)'\n') > -1)
{
length -= 1;
}
next = length;
}
var consumed = next + separator.Length;
length -= next + separator.Length;
switch (fields)
{
case 0:
Name = new StringField(start, next, encoding);
break;
case 1:
Welcome = new StringField(start, next, encoding);
break;
default:
ExtraFields = ExtraFields.Initialized ? ExtraFields.AddLength(next) : new StringField(start, next, encoding);
break;
}
start += consumed;
fields++;
if (length < 1)
{
Fields = fields;
break;
}
}
}
}
