private LanguageCultureCollection GetLanguagesCultureList(string keyValueList)
{
//Trim last separator if found
keyValueList = keyValueList.TrimEnd(itemsSeparator);
string[] nameValues = keyValueList.Split(itemsSeparator);
LanguageCultureCollection nameValueColl = new LanguageCultureCollection();
foreach (string nameValue in nameValues)
{
if (nameValue != string.Empty)
{
string[] arrNameValue = nameValue.Split(keyValueSeparator);
CultureInfo language;
CultureInfo culture;
language = new CultureInfo(arrNameValue[0]);
if (arrNameValue.Length == 2)
{
culture = new CultureInfo(arrNameValue[1]);
nameValueColl.Add(new LanguageCultureItem(language, culture));
}
if (arrNameValue.Length == 1)
{
culture = new CultureInfo(arrNameValue[0]);
if (culture.IsNeutralCulture) //we cannot allow this
culture = CultureInfo.CreateSpecificCulture(culture.Name); //creates a specific culture
nameValueColl.Add(new LanguageCultureItem(language, culture));
}
}
}
return nameValueColl;
}
/// <summary>
/// Get current Language from User language list
/// </summary>
/// <param name="myLanguagesCultureList">My languages culture list.</param>
/// <returns></returns>
private static LanguageCultureItem InternalGetUserLanguages(LanguageCultureCollection myLanguagesCultureList)
{
// Get userLangs
if (HttpContext.Current != null && HttpContext.Current.Request.UserLanguages != null &&
HttpContext.Current.Request.UserLanguages.Length > 0)
{
var arrUserLangs = new ArrayList(HttpContext.Current.Request.UserLanguages);
if (arrUserLangs.Count > 0)
{
for (var i = 0; i <= arrUserLangs.Count - 1; i++)
{
string currentLanguage;
if (arrUserLangs[i].ToString().IndexOf(';') >= 0)
{
currentLanguage = arrUserLangs[i].ToString().Substring(
0, arrUserLangs[i].ToString().IndexOf(';'));
}
else
{
currentLanguage = arrUserLangs[i].ToString();
}
try
{
// We try the full one... if this fails we catch it
arrUserLangs[i] = new CultureInfo(currentLanguage);
}
catch (ArgumentException)
{
try
{
// Some browsers can send an invalid language
// we try to get first two letters.. this is usually valid
arrUserLangs[i] = new CultureInfo(currentLanguage.Substring(2));
}
catch (ArgumentException)
{
}
return null;
}
}
}
var userLangs = (CultureInfo[])arrUserLangs.ToArray(typeof(CultureInfo));
// Try to match browser "accept languages" list
return myLanguagesCultureList.GetBestMatching(userLangs);
}
return null;
}
/// <summary>
/// Get default
/// </summary>
/// <param name="myLanguagesCultureList">My languages culture list.</param>
/// <returns></returns>
private static LanguageCultureItem InternalGetDefault(LanguageCultureCollection myLanguagesCultureList)
{
return myLanguagesCultureList[0];
}
/// <summary>
/// Get current Language from Query string
/// </summary>
/// <param name="myLanguagesCultureList">My languages culture list.</param>
/// <returns></returns>
private static LanguageCultureItem InternalGetQuerystring(LanguageCultureCollection myLanguagesCultureList)
{
if (HttpContext.Current != null && HttpContext.Current.Request.Params["Lang"] != null &&
HttpContext.Current.Request.Params["Lang"].Length > 0)
{
try
{
return
myLanguagesCultureList.GetBestMatching(
new CultureInfo(HttpContext.Current.Request.Params["Lang"]));
}
catch (ArgumentException)
{
// Maybe an invalid CultureInfo
return null;
}
}
return null;
}
/// <summary>
/// Get current Language from Cookie
/// </summary>
/// <param name="myLanguagesCultureList">My languages culture list.</param>
/// <param name="cookieAlias">The cookie alias.</param>
/// <returns></returns>
private static LanguageCultureItem InternalGetCookie(
LanguageCultureCollection myLanguagesCultureList, string cookieAlias)
{
if (HttpContext.Current != null && cookieAlias != null &&
HttpContext.Current.Request.Cookies[SwitcherCookiePrefix + cookieAlias] != null &&
HttpContext.Current.Request.Cookies[SwitcherCookiePrefix + cookieAlias].Value.Length > 0)
{
try
{
return
myLanguagesCultureList.GetBestMatching(
new CultureInfo(
HttpContext.Current.Request.Cookies[SwitcherCookiePrefix + cookieAlias].Value));
}
catch (ArgumentException)
{
// Maybe an invalid CultureInfo
}
}
return null;
}
