/// <summary>
/// Gets all cultures found in the directory. The search is done by:
/// 1) Enumerate all folders named with valid culture names
/// 2) Check that the folder contains resource files
/// The result is not cached.
/// </summary>
/// <param name="executingDirectory">The directory to check.</param>
/// <returns>The cultures found. If none an empty list is returned.</returns>
internal static IReadOnlyList <CultureInfo> GetAllCultures(DirectoryInfo executingDirectory)
{
if (!executingDirectory.Exists)
{
return(EmptyCultures);
}
HashSet <CultureInfo> cultures = null;
foreach (var directory in executingDirectory.EnumerateDirectories("*", SearchOption.TopDirectoryOnly))
{
if (Culture.TryGet(directory.Name, out var culture))
{
if (directory.EnumerateFiles("*.resources.dll", SearchOption.TopDirectoryOnly).Any())
{
if (cultures == null)
{
cultures = new HashSet <CultureInfo>(CultureInfoComparer.ByName);
}
cultures.Add(culture);
}
}
}
var entryAssembly = Assembly.GetEntryAssembly();
if (entryAssembly != null)
{
var neutralLanguageAttribute = entryAssembly.GetCustomAttribute <NeutralResourcesLanguageAttribute>();
if (Culture.TryGet(neutralLanguageAttribute?.CultureName, out var neutralCulture))
{
if (cultures == null)
{
cultures = new HashSet <CultureInfo>(CultureInfoComparer.ByName);
}
cultures.Add(neutralCulture);
}
var pattern = $"{entryAssembly.GetName().Name}\\.(?<culture>[A-Za-z]{{1,8}}(-[A-Za-z0-9]{{1,8}})*)\\.resources\\.dll";
foreach (var name in entryAssembly.GetManifestResourceNames())
{
var match = Regex.Match(name, pattern, RegexOptions.IgnoreCase);
if (match.Success &&
Culture.TryGet(match.Groups["culture"].Value, out var culture))
{
if (cultures == null)
{
cultures = new HashSet <CultureInfo>(CultureInfoComparer.ByName);
}
cultures.Add(culture);
}
}
}
return(cultures?.OrderBy(x => x.Name).ToArray() ?? EmptyCultures);
}
/// <summary>
/// Gets all cultures found in the directory. The search is donde by:
/// 1) Enumerate all folders named with valid culture names
/// 2) Check that the folder contains resource files
/// The result is not cached
/// </summary>
/// <param name="executingDirectory">The directory to check</param>
/// <returns>The cultures found. If none an empty list is returned.</returns>
internal static IReadOnlyList <CultureInfo> GetAllCultures(DirectoryInfo executingDirectory)
{
if (!executingDirectory.Exists)
{
return(EmptyCultures);
}
HashSet <CultureInfo> cultures = null;
foreach (var directory in executingDirectory.EnumerateDirectories("*", SearchOption.TopDirectoryOnly))
{
var cultureName = directory.Name;
if (!Culture.Exists(directory.Name))
{
continue;
}
if (directory.EnumerateFiles("*.resources.dll", SearchOption.TopDirectoryOnly).Any())
{
if (Culture.TryGet(cultureName, out var culture))
{
if (cultures == null)
{
cultures = new HashSet <CultureInfo>(CultureInfoComparer.ByName);
}
cultures.Add(culture);
}
}
}
var entryAssembly = Assembly.GetEntryAssembly();
if (entryAssembly != null)
{
var neutralLanguageAttribute = (NeutralResourcesLanguageAttribute)Attribute.GetCustomAttribute(entryAssembly, typeof(NeutralResourcesLanguageAttribute));
var name = neutralLanguageAttribute?.CultureName;
if (name != null && Culture.TryGet(name, out var neutralCulture))
{
if (cultures == null)
{
cultures = new HashSet <CultureInfo>(CultureInfoComparer.ByName);
}
cultures.Add(neutralCulture);
}
}
return(cultures?.OrderBy(x => x.Name).ToArray() ?? EmptyCultures);
}