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);
}
public void Match <T>(ICultureExpression requestedCulture, ICultureExpression defaultCulture, IEnumerable <T> codedItems) where T : ICodedItem
{
foreach (T codedItem in codedItems)
{
codedItem.DisplayName = Match(requestedCulture, defaultCulture, codedItem.Code, codedItem.DefaultName);
}
}
public IList <IFileCultureInfo> Get(ICultureExpression requestedCulture, string directory, string extension)
{
string culture = requestedCulture.DisplayName;
CultureFileCollectionPage culturePage = cultureCache.Get(culture, key => RetrivationResult <CultureFileCollectionPage> .Create(new CultureFileCollectionPage(requestedCulture, perCultureCacheSize)));
return(culturePage.Get(directory, extension, env));
}
public SetCultureFilterResult(string cultureSpecifier, ICultureExpression culture, string pathBase, string action)
{
CultureSpecifier = cultureSpecifier;
PathBase = pathBase;
Action = action;
Culture = culture;
}
public static void Match <T>(this ICodeMatchingService service, ICultureExpression requestedCulture, T codedItem) where T : ICodedItem
{
HttpContext httpContext = service.HttpContext;
IServiceProvider services = httpContext.RequestServices;
ICultureOption cultureOption = services.GetRequiredService <ICultureOption>();
service.Match(requestedCulture, cultureOption.DefaultCulture, codedItem);
}
public bool Equals(ICultureExpression other)
{
if (other == null)
{
return(false);
}
return(DisplayName.Equals(other.DisplayName));
}
public static string Match(this ICodeMatchingService service, ICultureExpression requestedCulture, string code, string defaultName)
{
HttpContext httpContext = service.HttpContext;
IServiceProvider services = httpContext.RequestServices;
ICultureOption cultureOption = services.GetRequiredService <ICultureOption>();
return(service.Match(requestedCulture, cultureOption.DefaultCulture, code, defaultName));
}
public int CompareTo(ICultureExpression other)
{
if (other == null)
{
return(-1);
}
return(DisplayName.CompareTo(other.DisplayName));
}
public FileCultureInfo(string relativePath, string fileName, string fileNameWithoutCulture, string extension, ICultureExpression culture)
{
RelativePath = relativePath;
FileName = fileName;
FileNameWithoutCulture = fileNameWithoutCulture;
Extension = extension;
Culture = culture;
}
public static IList <IFileCultureInfo> FindFiles(
string parentPath,
string extension,
ICultureExpression requestedCulture,
HttpContext httpContext)
{
IHostingEnvironment env = httpContext.RequestServices.GetRequiredService <IHostingEnvironment>();
return(FindFiles(parentPath, extension, requestedCulture, env));
}
public static ICultureExpression RemoveRegion(this ICultureExpression culture)
{
if (culture.IsAllRegion)
{
return(culture);
}
else
{
return(new CultureExpression(culture.Language, "*"));
}
}
public static bool TryFindFile(
string directory,
string fileName,
string extension,
ICultureExpression requestedCulture,
HttpContext httpContext,
out IFileCultureInfo result)
{
IHostingEnvironment env = httpContext.RequestServices.GetRequiredService <IHostingEnvironment>();
ICultureOption option = httpContext.RequestServices.GetRequiredService <ICultureOption>();
return(TryFindFile(directory, fileName, extension, requestedCulture, env, option, out result));
}
public static bool IsCultureSupported(this ICultureOption cultureOption, ICultureExpression culture, out ICultureExpression supportedCulture)
{
ICultureExpression result;
if (culture.IsAllRegion)
{
result = cultureOption.SupportedCultures.FirstOrDefault(exp => exp.Language.Equals(culture.Language));
supportedCulture = result;
return(supportedCulture != null);
}
result = cultureOption.SupportedCultures.FirstOrDefault(exp => exp.Language.Equals(culture.Language) && exp.Region.Equals(culture.Region));
supportedCulture = result;
return(supportedCulture != null);
}
public string Get(HttpContext httpContext, string code, string defaultName, ICultureExpression requestedCulture)
{
string culture = requestedCulture.DisplayName;
CulturePage culturePage = cultureCache.Get(culture, key =>
{
string basePath = matchingOption.ResourceDirectory;
IList <IFileCultureInfo> files = ResourceRequestHelper.FindFiles(basePath, "json", requestedCulture, httpContext);
if (files.Count <= 0)
{
files = ResourceRequestHelper.FindFiles(basePath, "json", cultureOption.DefaultCulture, httpContext);
}
if (files.Count <= 0)
{
return(RetrivationResult <CulturePage> .Create(new EmptyCulturePage()));
}
string filePath;
IHostingEnvironment env = httpContext.RequestServices.GetRequiredService <IHostingEnvironment>();
IFileProvider provider = env.ContentRootFileProvider;
SetRecord values = new SetRecord();
foreach (IFileCultureInfo file in files.Reverse())
{
filePath = file.RelativePath;
IFileInfo current = provider.GetFileInfo(filePath);
try
{
using (Stream fileStream = current.CreateReadStream())
{
SetRecord fileContent = (SetRecord)Hake.Extension.ValueRecord.Json.Converter.ReadJson(fileStream, !matchingOption.IsCaseSensitive);
CombineSetRecord(values, fileContent);
}
}
catch
{
}
}
return(RetrivationResult <CulturePage> .Create(new CulturePage(perCultureCapacity, values)));
});
return(culturePage.ContentCache.Get(code, key =>
{
if (culturePage.Values.TryReadAs <string>($"{key}.name", out string value) &&
value != null)
{
return RetrivationResult <string> .Create(value);
}
return RetrivationResult <string> .SupressResult(defaultName);
}));
}
private void InvokeMiddleware(HttpContext context, ICultureContext cultureContext)
{
ICultureExpression cultureExpression = ExtractLanguageFromUrl(context, cultureContext, out string urlSpecifier, out string action);
cultureContext.UrlCultureSpecifier = urlSpecifier;
if (cultureExpression == null)
{
cultureExpression = ExtractLanguageFromHeader(context, cultureContext);
}
if (cultureExpression == null)
{
cultureExpression = cultureContext.CultureOption.DefaultCulture;
}
cultureContext.Action = action;
cultureContext.CurrentCulture = cultureExpression;
}
public static bool IsCultureSupported(this ICultureOption cultureOption, ICultureExpression culture)
{
if (culture.IsAllRegion)
{
return(cultureOption.SupportedCultures.Any(exp => exp.Language.Equals(culture.Language)));
}
return(cultureOption.SupportedCultures.Any(exp =>
{
if (exp.IsAllRegion)
{
return exp.Language.Equals(culture.Language);
}
return exp.Language.Equals(culture.Language) && exp.Region.Equals(culture.Region);
}));
}
public static bool TryParseCultureExpression(this string language, out ICultureExpression expression)
{
if (language.Length == 2)
{
expression = new CultureExpression(language.ToLower(), "*");
return(true);
}
else if (language.Length == 4 && language.EndsWith("-*"))
{
expression = new CultureExpression(language.Substring(0, 2).ToLower(), "*");
return(true);
}
else if (language.Length == 5 && (language[2] == '-' || language[2] == '_'))
{
expression = new CultureExpression(language.Substring(0, 2).ToLower(), language.Substring(3, 2).ToUpper());
return(true);
}
expression = null;
return(false);
}
public string Match(ICultureExpression requestedCulture, ICultureExpression defaultCulture, string code, string defaultName)
{
return(matchingCache.Get(HttpContext, code, defaultName, requestedCulture));
}
public CultureMatchingPageResult(ICultureExpression requestedCulture)
{
_requestedCulture = requestedCulture;
}
internal CultureOption(string defaultCulture, IEnumerable <string> supportedCultures)
{
this.defaultCulture = defaultCulture.ParseCultureExpression();
this.supportedCultures = new SortedSet <ICultureExpression>(supportedCultures.Select(exp => exp.ParseCultureExpression()), new CultureExpressionComparer()).ToList();
}
public void Match <T>(ICultureExpression requestedCulture, ICultureExpression defaultCulture, T codedItem) where T : ICodedItem
{
codedItem.DisplayName = Match(requestedCulture, defaultCulture, codedItem.Code, codedItem.DefaultName);
}
internal LocalizedViewRenderContext(ICultureExpression requestedCulture, ICultureExpression renderedCulture, string urlCultureSpecifier)
{
RequestedCulture = requestedCulture;
RenderedCulture = renderedCulture;
UrlCultureSpecifier = urlCultureSpecifier;
}
public static IList <IFileCultureInfo> FindFiles(
string directory,
string extension,
ICultureExpression requestedCulture,
IHostingEnvironment env)
{
string filePath;
string targetName;
string fileNameWithoutCulture;
string nameNoExt;
string culture;
string filter;
string relativeParent;
int subLength;
int lastIndex;
string endsWithFilter = $".{extension}";
IEnumerable <IFileInfo> files;
IEnumerable <IFileInfo> dirs;
IFileProvider provider = env.ContentRootFileProvider;
IDirectoryContents contents = provider.GetDirectoryContents(directory);
List <IFileCultureInfo> result = new List <IFileCultureInfo>();
SortedSet <string> models = new SortedSet <string>();
if (requestedCulture.IsAllRegion)
{
// find by name
// **.en.ext
culture = requestedCulture.Language;
filter = $".{culture}.{extension}";
files = contents.Where(x => !x.IsDirectory && x.Name.EndsWith(filter));
subLength = filter.Length;
foreach (IFileInfo file in files)
{
targetName = file.Name;
filePath = $"{directory}/{targetName}"; // Path.Combine(parentPath, fileName)
fileNameWithoutCulture = targetName.Substring(0, targetName.Length - subLength);
result.Add(new FileCultureInfo(filePath, targetName, fileNameWithoutCulture, extension, requestedCulture));
models.Add(fileNameWithoutCulture);
}
// try find directory named with language
// en/**.ext
IFileInfo dir = contents.FirstOrDefault(x => x.IsDirectory && x.Name.Equals(culture));
if (dir != null)
{
relativeParent = $"{directory}/{culture}";
IDirectoryContents directoryContents = provider.GetDirectoryContents(relativeParent);
files = directoryContents.Where(x => !x.IsDirectory && x.Name.EndsWith(endsWithFilter));
foreach (IFileInfo file in files)
{
targetName = file.Name;
filePath = $"{relativeParent}/{targetName}";// Path.Combine(relatedParent, fileName)
fileNameWithoutCulture = Path.GetFileNameWithoutExtension(targetName);
if (!models.Contains(fileNameWithoutCulture))
{
result.Add(new FileCultureInfo(filePath, targetName, fileNameWithoutCulture, extension, requestedCulture));
models.Add(fileNameWithoutCulture);
}
}
}
// find the regions having the same language
// **.en-**.ext
filter = $@"\.{culture}-[a-zA-Z]{{2}}\.{extension}$";
Regex reg = new Regex(filter);
files = contents.Where(x => !x.IsDirectory && reg.IsMatch(x.Name));
foreach (IFileInfo file in files)
{
targetName = file.Name;
nameNoExt = Path.GetFileNameWithoutExtension(targetName);
lastIndex = nameNoExt.LastIndexOf('.');
fileNameWithoutCulture = targetName.Substring(0, lastIndex);
filePath = $"{directory}/{targetName}"; //Path.Combine(parentPath, fileName)
culture = nameNoExt.Substring(lastIndex + 1);
if (!models.Contains(fileNameWithoutCulture))
{
result.Add(new FileCultureInfo(filePath, targetName, fileNameWithoutCulture, extension, culture.ParseCultureExpression()));
models.Add(fileNameWithoutCulture);
}
}
// try find directory named with regions having the same language
// en-**/**.ext
filter = $"^{culture}-[a-zA-Z]{{2}}$";
reg = new Regex(filter);
dirs = contents.Where(x => x.IsDirectory && reg.IsMatch(x.Name));
foreach (IFileInfo langDir in dirs)
{
culture = langDir.Name;
ICultureExpression cultureExp = culture.ParseCultureExpression();
relativeParent = $"{directory}/{culture}"; //Path.Combine(parentPath, culture)
IDirectoryContents directoryContents = provider.GetDirectoryContents(relativeParent);
files = directoryContents.Where(x => !x.IsDirectory && x.Name.EndsWith(endsWithFilter));
foreach (IFileInfo file in files)
{
targetName = file.Name;
filePath = $"{relativeParent}/{targetName}"; //Path.Combine(relatedParent, fileName)
fileNameWithoutCulture = Path.GetFileNameWithoutExtension(targetName);
if (!models.Contains(fileNameWithoutCulture))
{
result.Add(new FileCultureInfo(filePath, targetName, fileNameWithoutCulture, extension, cultureExp));
models.Add(fileNameWithoutCulture);
}
}
}
}
else
{
// find by name
// **.en-US.ext
culture = requestedCulture.DisplayName;
filter = $".{culture}.{extension}";
files = contents.Where(x => !x.IsDirectory && x.Name.EndsWith(filter));
subLength = filter.Length;
foreach (IFileInfo file in files)
{
targetName = file.Name;
filePath = $"{directory}/{targetName}"; //Path.Combine(parentPath, fileName)
fileNameWithoutCulture = targetName.Substring(0, targetName.Length - subLength);
result.Add(new FileCultureInfo(filePath, targetName, fileNameWithoutCulture, extension, requestedCulture));
models.Add(fileNameWithoutCulture);
}
// try find directory named with culture name
// en-US/**.ext
dirs = contents.Where(x => x.IsDirectory && x.Name.Equals(culture));
foreach (IFileInfo langDir in dirs)
{
relativeParent = $"{directory}/{culture}"; //Path.Combine(parentPath, culture)
IDirectoryContents directoryContents = provider.GetDirectoryContents(relativeParent);
files = directoryContents.Where(x => !x.IsDirectory && x.Name.EndsWith(endsWithFilter));
foreach (IFileInfo file in files)
{
targetName = file.Name;
filePath = $"{relativeParent}/{targetName}"; //Path.Combine(relatedParent, fileName)
fileNameWithoutCulture = Path.GetFileNameWithoutExtension(targetName);
if (!models.Contains(fileNameWithoutCulture))
{
result.Add(new FileCultureInfo(filePath, targetName, fileNameWithoutCulture, extension, requestedCulture));
models.Add(fileNameWithoutCulture);
}
}
}
// find the regions having the same language
// **.en.ext
culture = requestedCulture.Language;
ICultureExpression cultureExp = culture.ParseCultureExpression();
filter = $".{culture}.{extension}";
files = contents.Where(x => !x.IsDirectory && x.Name.EndsWith(filter));
subLength = filter.Length;
foreach (IFileInfo file in files)
{
targetName = file.Name;
filePath = $"{directory}/{targetName}"; //Path.Combine(parentPath, fileName)
fileNameWithoutCulture = targetName.Substring(0, targetName.Length - subLength);
if (!models.Contains(fileNameWithoutCulture))
{
result.Add(new FileCultureInfo(filePath, targetName, fileNameWithoutCulture, extension, cultureExp));
models.Add(fileNameWithoutCulture);
}
}
// try find directory named with the same language
// en/**.ext
relativeParent = $"{directory}/{culture}"; //Path.Combine(parentPath, culture)
IFileInfo dir = contents.FirstOrDefault(x => x.IsDirectory && x.Name.Equals(culture));
if (dir != null)
{
IDirectoryContents directoryContents = provider.GetDirectoryContents(relativeParent);
files = directoryContents.Where(x => !x.IsDirectory && x.Name.EndsWith(endsWithFilter));
foreach (IFileInfo file in files)
{
targetName = file.Name;
filePath = $"{relativeParent}/{targetName}"; //Path.Combine(relatedParent, fileName)
fileNameWithoutCulture = Path.GetFileNameWithoutExtension(targetName);
if (!models.Contains(fileNameWithoutCulture))
{
result.Add(new FileCultureInfo(filePath, targetName, fileNameWithoutCulture, extension, cultureExp));
models.Add(fileNameWithoutCulture);
}
}
}
}
return(result);
}
internal CultureFileCollectionPage(ICultureExpression culture, int capacity)
{
cache = new Cache <string, IList <IFileCultureInfo> >(capacity);
this.culture = culture;
}
public Task Invoke(HttpContext context, ICultureContext cultureContext)
{
if (filter == null)
{
InvokeMiddleware(context, cultureContext);
}
else
{
UrlFilterResult filterResult = filter(context.Request.Path);
if (filterResult is InvokeMiddlewareFilterResult)
{
InvokeMiddleware(context, cultureContext);
}
else if (filterResult is SetCultureFilterResult setCultureResult)
{
cultureContext.UrlCultureSpecifier = setCultureResult.CultureSpecifier;
cultureContext.CurrentCulture = setCultureResult.Culture;
cultureContext.Action = setCultureResult.Action;
context.Request.Path = new PathString(cultureContext.Action);
context.Request.PathBase = new PathString(setCultureResult.PathBase);
}
else if (filterResult is CheckHeaderFilterResult)
{
cultureContext.UrlCultureSpecifier = "";
ICultureExpression cultureExpression = ExtractLanguageFromHeader(context, cultureContext);
if (cultureExpression == null)
{
cultureExpression = cultureContext.CultureOption.DefaultCulture;
}
cultureContext.Action = context.Request.Path;
cultureContext.CurrentCulture = cultureExpression;
}
else
{
ICultureExpression cultureExpression = cultureContext.CultureOption.DefaultCulture;
cultureContext.Action = context.Request.Path;
cultureContext.CurrentCulture = cultureExpression;
return(next(context));
}
}
string urlSpecifier = cultureContext.UrlCultureSpecifier;
if (urlSpecifier.Length <= 0)
{
return(next(context));
}
else
{
return(next(context).ContinueWith(tsk =>
{
if ((context.Response.StatusCode == 301 || context.Response.StatusCode == 302) &&
context.Response.Headers.TryGetValue("Location", out StringValues locationValue) &&
locationValue.Count > 0)
{
string location = locationValue[0];
if (UrlComponents.TryParse(location, out UrlComponents urlComponents))
{
if (urlComponents.IsRelative)
{
if (!string.IsNullOrEmpty(urlComponents.CultureSpecifier))
{
// dose not change the location
// context.Response.Headers["Location"] = urlSpecifier + context.Response.Headers["Location"];
return;
}
else
{
urlComponents.TrySetCulture(urlSpecifier);
context.Response.Headers["Location"] = urlComponents.FullActionWithQuery;
return;
}
}
else
{
string host = context.Request.Host.Value;
string requestedHost = urlComponents.FullHost;
if (requestedHost != null && requestedHost.Equals(host, StringComparison.CurrentCultureIgnoreCase))
{
if (!string.IsNullOrEmpty(urlComponents.CultureSpecifier))
{
// dose not change the location
// context.Response.Headers["Location"] = urlSpecifier + context.Response.Headers["Location"];
return;
}
else
{
urlComponents.TrySetCulture(urlSpecifier);
context.Response.Headers["Location"] = urlComponents.FullActionWithQuery;
return;
}
}
else
{
// dose not change the location
// context.Response.Headers["Location"] = urlSpecifier + context.Response.Headers["Location"];
return;
}
}
}
else
{
// dose not change the location
// context.Response.Headers["Location"] = urlSpecifier + context.Response.Headers["Location"];
}
}
}));
}
}
public CultureMatchingViewResult(ICultureExpression requestedCulture)
{
RequestedCulture = requestedCulture;
}
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);
}
