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// ****************************************************************
// This is free software licensed under the NUnit license. You
// may obtain a copy of the license as well as information regarding
// copyright ownership at http://nunit.org/?p=license&r=2.4.
// ****************************************************************
using System;
using System.Reflection;
using System.Globalization;
namespace NUnit.Core
{
public class CultureDetector
{
private CultureInfo currentCulture;
// Set whenever we fail to support a list of platforms
private string reason = string.Empty;
/// <summary>
/// Default constructor uses the current culutre.
/// </summary>
public CultureDetector()
{
this.currentCulture = System.Threading.Thread.CurrentThread.CurrentCulture;
}
/// <summary>
/// Contruct a CultureHelper for a particular culture for testing.
/// </summary>
/// <param name="culture">The culture to be used</param>
public CultureDetector( string culture )
{
this.currentCulture = new CultureInfo( culture );
}
/// <summary>
/// Test to determine if one of a collection of culturess
/// is being used currently.
/// </summary>
/// <param name="cultures"></param>
/// <returns></returns>
public bool IsCultureSupported( string[] cultures )
{
foreach( string culture in cultures )
if ( IsCultureSupported( culture ) )
return true;
return false;
}
/// <summary>
/// Tests to determine if the current culture is supported
/// based on a culture attribute.
/// </summary>
/// <param name="platformAttribute">The attribute to examine</param>
/// <returns></returns>
public bool IsCultureSupported( Attribute cultureAttribute )
{
//Use reflection to avoid dependency on a particular framework version
string include = (string)Reflect.GetPropertyValue(
cultureAttribute, "Include",
BindingFlags.Public | BindingFlags.Instance );
string exclude = (string)Reflect.GetPropertyValue(
cultureAttribute, "Exclude",
BindingFlags.Public | BindingFlags.Instance );
try
{
if (include != null && !IsCultureSupported(include))
{
reason = string.Format("Only supported under culture {0}", include);
return false;
}
if (exclude != null && IsCultureSupported(exclude))
{
reason = string.Format("Not supported under culture {0}", exclude);
return false;
}
}
catch( ArgumentException ex )
{
reason = string.Format( "Invalid culture: {0}", ex.ParamName );
return false;
}
return true;
}
/// <summary>
/// Test to determine if the a particular culture or comma-
/// delimited set of cultures is in use.
/// </summary>
/// <param name="platform">Name of the culture or comma-separated list of culture names</param>
/// <returns>True if the culture is in use on the system</returns>
public bool IsCultureSupported( string culture )
{
culture = culture.Trim();
if ( culture.IndexOf( ',' ) >= 0 )
{
if ( IsCultureSupported( culture.Split( new char[] { ',' } ) ) )
return true;
}
else
{
if( this.currentCulture.Name == culture || this.currentCulture.TwoLetterISOLanguageName == culture)
return true;
}
this.reason = "Only supported under culture " + culture;
return false;
}
/// <summary>
/// Return the last failure reason. Results are not
/// defined if called before IsSupported( Attribute )
/// is called.
/// </summary>
public string Reason
{
get { return reason; }
}
}
}
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