public void Slug_WithDefaultOptions(string text, string expected)
{
var options = new SlugOptions();
var slug = Slug.Create(text, options);
Assert.AreEqual(expected, slug);
}
public void Slug_Lowercase(string text, string expected)
{
var options = new SlugOptions
{
CasingTransformation = CasingTransformation.ToLowerCase,
};
var slug = Slug.Create(text, options);
Assert.Equal(expected, slug);
}
public void Slug_Lowercase(string text, string expected)
{
var options = new SlugOptions
{
ToLower = true
};
var slug = Slug.Create(text, options);
Assert.AreEqual(expected, slug);
}
/// <summary>
/// Creates a slug from the specified text.
/// </summary>
/// <param name="text">The text. If null if specified, null will be returned.</param>
/// <param name="options">The options. May be null.</param>
/// <returns>A slugged text.</returns>
public static string Create(string text, SlugOptions options)
{
if (text == null)
{
return(null);
}
if (options == null)
{
options = new SlugOptions();
}
string normalised;
if (options.EarlyTruncate && options.MaximumLength > 0 && text.Length > options.MaximumLength)
{
normalised = text.Substring(0, options.MaximumLength).Normalize(NormalizationForm.FormD);
}
else
{
normalised = text.Normalize(NormalizationForm.FormD);
}
int max = options.MaximumLength > 0 ? Math.Min(normalised.Length, options.MaximumLength) : normalised.Length;
StringBuilder sb = new StringBuilder(max);
for (int i = 0; i < normalised.Length; i++)
{
char c = normalised[i];
UnicodeCategory uc = char.GetUnicodeCategory(c);
if (options.AllowedUnicodeCategories.Contains(uc) && options.IsAllowed(c))
{
switch (uc)
{
case UnicodeCategory.UppercaseLetter:
if (options.ToLower)
{
c = options.Culture != null?char.ToLower(c, options.Culture) : char.ToLowerInvariant(c);
}
sb.Append(options.Replace(c));
break;
case UnicodeCategory.LowercaseLetter:
if (options.ToUpper)
{
c = options.Culture != null?char.ToUpper(c, options.Culture) : char.ToUpperInvariant(c);
}
sb.Append(options.Replace(c));
break;
default:
sb.Append(options.Replace(c));
break;
}
}
else if (uc == UnicodeCategory.NonSpacingMark)
{
// don't add a separator
}
else
{
if (options.Separator != null && !EndsWith(sb, options.Separator))
{
sb.Append(options.Separator);
}
}
if (options.MaximumLength > 0 && sb.Length >= options.MaximumLength)
{
break;
}
}
string result = sb.ToString();
if (options.MaximumLength > 0 && result.Length > options.MaximumLength)
{
result = result.Substring(0, options.MaximumLength);
}
if (!options.CanEndWithSeparator && options.Separator != null && result.EndsWith(options.Separator))
{
result = result.Substring(0, result.Length - options.Separator.Length);
}
return(result.Normalize(NormalizationForm.FormC));
}
