private char[] GetNextLine(Common.Random random, long capacity, ref List <char[]> duplicates)
{
char[] chars = null;
if (duplicates.Count > 0 && random.Next(100) < duplicatesProbabilityPercents)
{
//get duplicate line
chars = duplicates[random.Next(duplicates.Count)];
var remainingBytes = capacity - chars.Length;
if (remainingBytes <= MinLineLength)
{
chars = null;
}
}
// need to generate new line
if (null == chars)
{
// generate new line
var rnd = random.Next(MinLineLength, maxLineLength);
var length = Math.Min(rnd, capacity);
var remainingBytes = capacity - length;
if (remainingBytes <= MinLineLength)
{
length += remainingBytes;
}
chars = GenerateLine(random, (int)length);
// store duplicates to future use
if (duplicatePatternsCount > 0)
{
lock (duplicates)
{
--duplicatePatternsCount;
duplicates.Add(chars);
}
}
}
return(chars);
}
private static char[] GenerateLine(Common.Random random, int length)
{
var buffer = new char[length];
var dotIndex = random.Next(1, Math.Min(length - MinLineLength + 1, MaxDigitsConunt));
for (var i = 0; i < buffer.Length - 2; i++)
{
if (i == dotIndex || i == dotIndex + 1)
{
continue;
}
buffer[i] = chars[
i < dotIndex
? random.Next(i == 0 ? 1 : 0, 10)
: random.Next(chars.Length)];
}
buffer[dotIndex] = '.';
buffer[dotIndex + 1] = ' ';
buffer[buffer.Length - 2] = '\r';
buffer[buffer.Length - 1] = '\n';
return(buffer);
}
