public static StringBuilder ToStringBuilder <T>(T value, ValuePresenterLimits limits = default)
{
var builder = new StringBuilder();
AppendTo(builder, value, limits);
return(builder);
}
private static void AppendTo <T>(StringBuilder builder, T value, int depth, ValuePresenterLimits limits = default)
{
if (value == null)
{
builder.Append("null");
return;
}
if (depth > limits.MaxDepth)
{
builder.Append("…");
return;
}
switch (value)
{
case ICollection <int> c:
AppendEnumerableTo(builder, c, depth, limits);
break;
case ICollection c:
AppendEnumerableTo(builder, c.Cast <object>(), depth, limits);
break;
default:
AppendStringTo(builder, value.ToString() ?? "", limits);
break;
}
}
public static void AppendStringTo(StringBuilder builder, string value, ValuePresenterLimits limits)
{
if (limits.MaxValueLength == null || value.Length <= limits.MaxValueLength)
{
builder.Append(value);
}
else
{
builder.Append(value, 0, limits.MaxValueLength.Value - 1);
builder.Append("…");
}
}
private static void AppendTo <T>(StringBuilder builder, T value, int depth, ValuePresenterLimits limits = default)
{
if (value == null)
{
builder.Append("null");
return;
}
if (depth > limits.MaxDepth)
{
builder.Append("…");
return;
}
switch (value)
{
case ICollection <int> c:
AppendEnumerableTo(builder, c, depth, limits);
break;
case ICollection c:
AppendEnumerableTo(builder, c.Cast <object>(), depth, limits);
break;
case DateTime date:
AppendStringTo(builder, date.ToString("dd.MM.yyyy HH:mm:ss.FFFFFFF", CultureInfo.InvariantCulture), limits);
break;
case DateTimeOffset date:
AppendStringTo(builder, date.ToString("dd.MM.yyyy HH:mm:ss.FFFFFFFK", CultureInfo.InvariantCulture), limits);
break;
case IFormattable f:
AppendStringTo(builder, f.ToString(null, CultureInfo.InvariantCulture) ?? "", limits);
break;
default:
AppendStringTo(builder, value.ToString() ?? "", limits);
break;
}
}
private static void AppendSpanTo <T>(StringBuilder builder, ReadOnlySpan <T> value, int depth, ValuePresenterLimits limits)
{
builder.Append("{ ");
var index = 0;
foreach (var item in value)
{
if (index > 0)
{
builder.Append(", ");
}
if (index > limits.MaxEnumerableItemCount)
{
builder.Append("…");
break;
}
AppendTo(builder, item, depth + 1, limits);
index += 1;
}
builder.Append(" }");
}
internal static void AppendEnumerableTo <T>(StringBuilder builder, IEnumerable <T> enumerable, int depth, ValuePresenterLimits limits)
{
builder.Append("{ ");
var index = 0;
foreach (var item in enumerable)
{
if (index > 0)
{
builder.Append(", ");
}
if (index > limits.MaxEnumerableItemCount)
{
builder.Append("…");
break;
}
AppendTo(builder, item, depth + 1, limits);
index += 1;
}
builder.Append(" }");
}
public static void AppendTo <T>(StringBuilder builder, ReadOnlySpan <T> value, ValuePresenterLimits limits = default)
{
AppendSpanTo(builder, value, depth: 1, limits);
}