public static bool TryFindFile(
string directory,
string fileName,
string extension,
ICultureExpression requestedCulture,
IHostingEnvironment env,
ICultureOption cultureOption,
out IFileCultureInfo result)
{
// match requested
if (TryFindFile(directory, fileName, extension, env, requestedCulture, out result))
{
return(true);
}
// match default
if (TryFindFile(directory, fileName, extension, env, cultureOption.DefaultCulture, out result))
{
return(true);
}
// match no language
string targetName = $"{fileName}.{extension}";
IFileInfo file = env.ContentRootFileProvider.GetFileInfo(Path.Combine(directory, targetName));
if (file.Exists && !file.IsDirectory)
{
result = new FileCultureInfo($"{directory}/{targetName}", targetName, fileName, extension, null);
return(true);
}
// match failed
result = null;
return(false);
}
private static bool TryFindFile(
string directory,
string fileName,
string extension,
IHostingEnvironment env,
ICultureExpression requestedCulture,
out IFileCultureInfo result)
{
string filePath;
string targetName;
string culture;
IFileInfo file;
IDirectoryContents contents;
IFileProvider provider = env.ContentRootFileProvider;
if (requestedCulture.IsAllRegion)
{
// find by name
// View.en.cshtml
culture = requestedCulture.Language;
targetName = $"{fileName}.{culture}.{extension}";
filePath = $"{directory}/{targetName}";
file = provider.GetFileInfo(filePath);
if (file.Exists && !file.IsDirectory)
{
result = new FileCultureInfo(filePath, targetName, fileName, extension, requestedCulture);
return(true);
}
// try find directory named with language
// en/View.cshtml
contents = provider.GetDirectoryContents(directory);
IFileInfo dir = contents.FirstOrDefault(x => x.IsDirectory && x.Name.Equals(culture));
if (dir != null)
{
targetName = $"{fileName}.{extension}";
filePath = $"{directory}/{dir.Name}/{targetName}";
file = provider.GetFileInfo(filePath);
if (file.Exists && !file.IsDirectory)
{
result = new FileCultureInfo(filePath, targetName, fileName, extension, requestedCulture);
return(true);
}
}
// find the first region having the same language
// View.en-XX.cshtml
string startsWithFilter = $"{fileName}.{culture}-";
string endsWithFilter = $".{extension}";
file = contents.FirstOrDefault(x => !x.IsDirectory && x.Name.StartsWith(startsWithFilter) && x.Name.EndsWith(endsWithFilter));
if (file != null)
{
culture = file.Name.Substring(fileName.Length + 1);
culture = Path.GetFileNameWithoutExtension(culture);
filePath = $"{directory}/{file.Name}";
result = new FileCultureInfo(filePath, file.Name, fileName, extension, culture.ParseCultureExpression());
return(true);
}
// try find directory named with the first region having the same language
// en-XX/View.cshtml
startsWithFilter = $"{culture}-";
dir = contents.FirstOrDefault(x => x.IsDirectory && x.Name.StartsWith(startsWithFilter));
if (dir != null)
{
targetName = $"{fileName}.{extension}";
filePath = $"{directory}/{dir.Name}/{targetName}";
file = provider.GetFileInfo(filePath);
if (file.Exists && !file.IsDirectory)
{
culture = dir.Name;
result = new FileCultureInfo(filePath, targetName, fileName, extension, culture.ParseCultureExpression());
return(true);
}
}
}
else
{
// find by name
// View.en-US.cshtml
culture = requestedCulture.DisplayName;
targetName = $"{fileName}.{culture}.{extension}";
filePath = $"{directory}/{targetName}";
file = provider.GetFileInfo(filePath);
if (file.Exists && !file.IsDirectory)
{
result = new FileCultureInfo(filePath, targetName, fileName, extension, requestedCulture);
return(true);
}
// try find directory named with name
// en-US/View.cshtml
contents = provider.GetDirectoryContents(directory);
IFileInfo dir = contents.FirstOrDefault(x => x.IsDirectory && x.Name.Equals(culture));
if (dir != null)
{
targetName = $"{fileName}.{extension}";
filePath = $"{directory}/{culture}/{targetName}";
file = provider.GetFileInfo(filePath);
if (file.Exists && !file.IsDirectory)
{
result = new FileCultureInfo(filePath, targetName, fileName, extension, requestedCulture);
return(true);
}
}
// find by language
// View.en.cshtml
culture = requestedCulture.Language;
targetName = $"{fileName}.{culture}.{extension}";
filePath = $"{directory}/{targetName}";
file = provider.GetFileInfo(filePath);
if (file.Exists && !file.IsDirectory)
{
result = new FileCultureInfo(filePath, targetName, fileName, extension, culture.ParseCultureExpression());
return(true);
}
// try find directory named with the specific language
// en/View.cshtml
dir = contents.FirstOrDefault(x => x.IsDirectory && x.Name.Equals(culture));
if (dir != null)
{
targetName = $"{fileName}.{extension}";
filePath = $"{directory}/{culture}/{targetName}";
file = provider.GetFileInfo(filePath);
if (file.Exists && !file.IsDirectory)
{
result = new FileCultureInfo(filePath, targetName, fileName, extension, culture.ParseCultureExpression());
return(true);
}
}
}
result = null;
return(false);
}
