/// <summary>
/// Initializes a new instance of the <see cref="TextGenerator" /> class with the specified <see cref="SentenceGenerator" /> and with default values (<see cref="MinSentenceCount" /> = 10, <see cref="MaxSentenceCount" /> = 20, <see cref="LineBreakChance" /> = 0.0f, <see cref="ParagraphChance" /> = 0.1f).
/// </summary>
/// <param name="sentenceGenerator">The <see cref="SentenceGenerator" /> to use for sentence generation.</param>
public TextGenerator(SentenceGenerator sentenceGenerator)
{
Check.ArgumentNull(sentenceGenerator, nameof(sentenceGenerator));
SentenceGenerator = sentenceGenerator;
MinSentenceCount = 10;
MaxSentenceCount = 20;
LineBreakChance = 0;
ParagraphChance = .1f;
}
/// <summary>
/// Generates a random sequence of sentences using the specified parameters of this <see cref="TextGenerator" /> instance.
/// </summary>
/// <returns>
/// A new <see cref="string" /> with dynamically generated text.
/// </returns>
public string Generate()
{
Check.ArgumentNull(SentenceGenerator, nameof(SentenceGenerator));
Check.ArgumentOutOfRangeEx.GreaterEqual0(MinSentenceCount, nameof(MinSentenceCount));
Check.ArgumentOutOfRangeEx.GreaterEqual0(MaxSentenceCount, nameof(MaxSentenceCount));
Check.ArgumentOutOfRangeEx.GreaterEqualValue(MaxSentenceCount, MinSentenceCount, nameof(MaxSentenceCount), nameof(MinSentenceCount));
Check.ArgumentOutOfRangeEx.Between0And1(LineBreakChance, nameof(LineBreakChance));
Check.ArgumentOutOfRangeEx.Between0And1(ParagraphChance, nameof(ParagraphChance));
StringBuilder stringBuilder = new StringBuilder();
lock (MathEx._Random)
{
int sentences = MathEx._Random.Next(MinSentenceCount, MaxSentenceCount + 1);
for (int i = 0; i < sentences; i++)
{
stringBuilder.Append(SentenceGenerator.Generate());
if (MathEx._Random.NextSingle() < ParagraphChance)
{
stringBuilder.AppendLine().AppendLine();
}
else if (MathEx._Random.NextSingle() < LineBreakChance)
{
stringBuilder.AppendLine();
}
else
{
stringBuilder.Append(" ");
}
}
}
return(stringBuilder.ToString().Trim());
}
