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Build Status

Not implemented yet:

  • Support for obtaining dictionary parts.
  • Support for Database texts.

Usage

First the library must be initialized:

using Localization.AspNetCore.Service.IoC;

public IServiceProvider ConfigureServices(IServiceCollection services)
    var localizationConfiguration = m_configuration.GetSection("Localization").Get<LocalizationConfiguration>();
    IDatabaseConfiguration databaseConfiguration = null;
    //IDatabaseConfiguration databaseConfiguration = new NHibernateDatabaseConfiguration();
    
    services.AddLocalizationService(
        localizationConfiguration,
        databaseConfiguration
    );
}

Using library without config file:

public IServiceProvider ConfigureServices(IServiceCollection services)
    services.TryAddSingleton<LocalizationConfiguration>(
        cfg => new LocalizationConfiguration
        {
            BasePath = "Localization",
            DefaultScope = "global",
            SupportedCultures = new List<CultureInfo>(),
            DefaultCulture = new CultureInfo("en-US"),
            TranslateFallbackMode = LocTranslateFallbackMode.Key,
            AutoLoadResources = true,
            FirstAutoTranslateResource = LocLocalizationResource.File,
        }
    );
}

Structure of config json file:

{
	"BasePath":"path\\to\\localization",
	"DefaultScope":"global",
	"SupportedCultures":["en","es"],
	"DefaultCulture":"cs",
	"TranslateFallbackMode":"Key",
	"AutoLoadResources":true,
	"FirstAutoTranslateResource":"File"
}

Posibble values of TranslateFallbackMode:

  • Key
  • Exception
  • EmptyString

Structure of resource files (using JsonDictionaryFactory):

Every supported culture and default culture has to have resource file in every scope. Scopes are defined by directory structure.

For example consider:

{
  "BasePath": "/path/to/localization",
  "DefaultCulture": "cs",
  "SupportedCultures": ["cs", "en", "es"]
}

Directory structure is:

path/to/localization
			|__________info
			|__________statements
							|_________important

Resource files should be:

path/to/localization
		cs.json
		en.json
		es.json
			|__________info
			|		   info.cs.json
			|		   info.en.json
			|		   info.es.json
			|__________statements
					   statements.cs.json
					   statements.en.json
					   statements.es.json
							|_________important
									  statements.important.cs.json
									  statements.important.en.json
									  statements.important.es.json

Json structure (cs.json):

Example of json resource file in global scope and cs culture:

{
	"culture":"cs",
	"scope":"global",
	"scopeAlias": [
	  "scopeAlias1",
	  "scopeAlias2"
	],
	"parentScope":null,
	"dictionary": {
		"text-1-odst" : "První odstavec v globálním slovníku",
		"text-2-odst" : "Druhý odstavec v globálním slovníku",
		"text-3-odst" : "Třetí odstavec v globálním slovníku",
		"text-4-odst" : "Čtvrtý odstavec v globálním slovníku",
		"text-5-odst" : "Pátý odstavec v globálním slovníku",
		"confirm-button" : "Potvrdit",
		"klíč-stringu" : "Dnes je {0}."
	},
	"constants": {
		"const-date": "MMMM dd, yyyy",
		"const-time": "hh:mm:ss.f"	
	}
}

Notice support for parametrized strings {0}.

Notice support for constant strings. (To separate programming stuff from translators.)

Pluralized resource files:

Library also supports pluralization. Pluralized strings are stored in separate files. Every dictionary in scope can have pluralized version. Name of file is e.g. scope.plural.cs.json (keyword plural between scope and culture name).

Example of pluralized Json file (cs.plural.json):

{
	"culture":"cs",
	"scope":"global.plural",
	"dictionary": {
		"klíč-stringu": {
			"let": [ //<-This is default value
				[null, -5, "let"], 
				//the first value is start of the interval, the second value is end of interval (exclusive).
				//the third is value for defined interval.
				//null means possitive or negative infinity,
				//start of the interval is always less or equal than end of the interval.
				//No interval overlaps are allowed.
				[-4, -2, "roky"],
				[-1, -1, "rok"],
				[0, 0, "let"],
				[1, 1, "rok"],
				[2, 4, "roky"],
				[5, null, "let"]
			]
		}
	}	
}

Translating

Translate

LocalizedString ls = Translator.Translate("text-3-odst", new CultureInfo("cs"));
//ls.value == "Třetí odstavec v globálním slovníku";

Translate scope

LocalizedString lsII = Translator.Translate("text-3-odst", new CultureInfo("en"), "info.important");
//lsII.value == "Text in important info scope";

Translate constant

LocalizedString lsC = Translator.TranslateConstant("const-date", new CultureInfo("cs"));
//lsC.value == "MMMM dd, yyyy";

Translate pluralized

LocalizedString lsP = Translator.TranslatePluralization("klíč-stringu", 1, new CultureInfo("cs"));
//lsP.value == "rok";

Translate format

LocalizedString lsF = Translator.TranslateFormat("klíč-stringu", new[] {"pondělí"}, new CultureInfo("cs"));
//lsF.value == "Dnes je pondělí.";

Getting dictionary

...

Getting global dictionary

Dictionary<string, LocalizedString> dG = Translator.GetDictionary(new CultureInfo("cs"), "global")

Getting dictionary part !!!Not supported NOW

TODO

Geting constants dictionary

Dictionary<string, LocalizedString> dC = Translator.GetConstantsDictionary(new CultureInfo("cs"), "global")

Getting pluralized dictionary

Dictionary<string, PluralizedString> dP = Translator.GetPluralizedDictionary(new CultureInfo("cs"), "global");

Translate Data annotations

To translate data annotations you have to add json resource file in scope, which name is same as model class. Values of data annotation attributes are used as keys in dictionaries.

For example: In attribute [Display(Name = "UserName")] UserName is a key for translation in json resource file. For validation attributes it works the same. UserNameNotEmpty could be a key for translation in json resource file.

public class LoginViewModel
    {
        [Required(AllowEmptyStrings = false, ErrorMessage = "UserNameNotEmpty")]
        [DataType(DataType.Text)]
        [Display(Name = "UserName")]
        public string UserName { get; set; }
...

LoginViewModel.cs-CZ.json

{
  "culture": "cs-CZ",
  "scope": "LoginViewModel",
  "dictionary": {
    "RememberMe": "Zapamatovat si me",
    "UserName": "Uživatelské jméno",
    "Password": "Heslo"
  }
}

Configuration in ASP.NET:

Startup.cs

public void ConfigureServices(IServiceCollection services)
{
    var localizationConfiguration = m_configuration.GetSection("Localization").Get<LocalizationConfiguration>();
    IDatabaseConfiguration databaseConfiguration = null;
    //IDatabaseConfiguration databaseConfiguration = new NHibernateDatabaseConfiguration();
    
    services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
    services.AddLocalizationService(
        localizationConfiguration,
        databaseConfiguration
    );
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{  
}

Database structure

Init database schema script for SQL Server is in Sample project named CreateDBSchema.sql. Run it in SQL Server Management studio

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