public void Can_parse_english()
{
var format = "nplurals=2; plural=n != 1;";
var expression = PluralFormsExpression.Parse(format);
Assert.Equal(2, expression.Count);
Assert.Equal(0, expression.Get(1));
Assert.Equal(1, expression.Get(0));
Assert.Equal(1, expression.Get(2));
Assert.Equal(1, expression.Get(3));
Assert.Equal(1, expression.Get(4));
Assert.Equal(1, expression.Get(5));
Assert.Equal(1, expression.Get(6));
Assert.Equal(1, expression.Get(7));
Assert.Equal(1, expression.Get(8));
Assert.Equal(1, expression.Get(9));
Assert.Equal(1, expression.Get(10));
Assert.Equal(1, expression.Get(11));
Assert.Equal(1, expression.Get(12));
Assert.Equal(1, expression.Get(13));
Assert.Equal(1, expression.Get(14));
Assert.Equal(1, expression.Get(15));
}
public void Can_parse_czech()
{
var format = "nplurals=3; plural=(n==1) ? 0 : (n>=2 && n<=4) ? 1 : 2;";
var expression = PluralFormsExpression.Parse(format);
Assert.Equal(3, expression.Count);
Assert.Equal(0, expression.Get(1));
Assert.Equal(1, expression.Get(2));
Assert.Equal(1, expression.Get(3));
Assert.Equal(1, expression.Get(4));
Assert.Equal(2, expression.Get(0));
Assert.Equal(2, expression.Get(5));
Assert.Equal(2, expression.Get(6));
Assert.Equal(2, expression.Get(7));
Assert.Equal(2, expression.Get(8));
Assert.Equal(2, expression.Get(9));
Assert.Equal(2, expression.Get(10));
Assert.Equal(2, expression.Get(11));
Assert.Equal(2, expression.Get(12));
Assert.Equal(2, expression.Get(13));
Assert.Equal(2, expression.Get(14));
Assert.Equal(2, expression.Get(15));
}
public void Can_parse_slovenian()
{
var format = @"nplurals=4; plural=n%100==1 ? 0 : n%100==2 ? 1 : n%100==3 || n%100==4 ? 2 : 3;";
var expression = PluralFormsExpression.Parse(format);
Assert.Equal(4, expression.Count);
Assert.Equal(0, expression.Get(1));
Assert.Equal(0, expression.Get(101));
Assert.Equal(0, expression.Get(201));
Assert.Equal(0, expression.Get(301));
Assert.Equal(0, expression.Get(1001));
Assert.Equal(1, expression.Get(2));
Assert.Equal(1, expression.Get(102));
Assert.Equal(1, expression.Get(202));
Assert.Equal(1, expression.Get(302));
Assert.Equal(1, expression.Get(1002));
Assert.Equal(2, expression.Get(3));
Assert.Equal(2, expression.Get(103));
Assert.Equal(2, expression.Get(203));
Assert.Equal(2, expression.Get(303));
Assert.Equal(2, expression.Get(1003));
Assert.Equal(2, expression.Get(4));
Assert.Equal(2, expression.Get(104));
Assert.Equal(2, expression.Get(204));
Assert.Equal(2, expression.Get(304));
Assert.Equal(2, expression.Get(1004));
Assert.Equal(3, expression.Get(0));
Assert.Equal(3, expression.Get(5));
Assert.Equal(3, expression.Get(6));
Assert.Equal(3, expression.Get(7));
Assert.Equal(3, expression.Get(8));
Assert.Equal(3, expression.Get(9));
Assert.Equal(3, expression.Get(10));
Assert.Equal(3, expression.Get(11));
Assert.Equal(3, expression.Get(12));
Assert.Equal(3, expression.Get(13));
Assert.Equal(3, expression.Get(14));
Assert.Equal(3, expression.Get(15));
Assert.Equal(3, expression.Get(16));
Assert.Equal(3, expression.Get(105));
Assert.Equal(3, expression.Get(205));
Assert.Equal(3, expression.Get(305));
Assert.Equal(3, expression.Get(1005));
}
public static Catalog Load(IGettextReader reader, CultureInfo culture = null)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
var catalog = new Catalog();
Translation translation;
while ((translation = reader.ReadTranslation()) != null)
{
if (translation.Key.IsHeader)
{
var headers = translation.Single().Split(HEADER_SEPARATOR);
foreach (var header in headers)
{
if (header.Trim().Length <= 0)
{
continue;
}
var split = header.Split(HEADER_KEY_VALUE_SEPARATORS, 2);
if (split.Length != 2)
{
throw new InvalidOperationException("Failed to parse header '" + header + "'");
}
var key = split[0].Trim();
var value = split[1].Trim();
catalog._headers.Add(key, value);
// accept encoding
if (string.Equals(key, "Content-Type", StringComparison.OrdinalIgnoreCase))
{
var contentType = new ContentType(value);
if (contentType.CharSet != null)
{
reader.Encoding = Encoding.GetEncoding(contentType.CharSet);
}
}
// accept culture
else if (string.Equals(key, "Language", StringComparison.OrdinalIgnoreCase))
{
var cultureInfo = new CultureInfo(value);
catalog.Culture = cultureInfo;
}
// accept plural forms
else if (string.Equals(key, "Plural-Forms", StringComparison.OrdinalIgnoreCase))
{
var pluralForms = PluralFormsExpression.Parse(value);
catalog.PluralForms = pluralForms;
}
}
}
else
{
catalog._translations.Add(translation.Key, translation);
}
}
// override culture
if (culture != null)
{
catalog.Culture = culture;
}
// verify integrity
if (catalog.Culture == null)
{
throw new InvalidOperationException("Catalog doesn't have 'Language' header");
}
if (catalog.PluralForms == null)
{
catalog.PluralForms = PluralFormsExpression.Default;
}
return(catalog);
}