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using System;
using System.Globalization;
namespace Org.BouncyCastle.Utilities
{
internal static class Platform
{
private static readonly CompareInfo InvariantCompareInfo = CultureInfo.InvariantCulture.CompareInfo;
internal static bool EqualsIgnoreCase(string a, string b)
{
return string.Equals(a, b, StringComparison.OrdinalIgnoreCase);
}
internal static string GetEnvironmentVariable(string variable)
{
try
{
return Environment.GetEnvironmentVariable(variable);
}
catch (System.Security.SecurityException)
{
// We don't have the required permission to read this environment variable,
// which is fine, just act as if it's not set
return null;
}
}
internal static int IndexOf(string source, char value)
{
return InvariantCompareInfo.IndexOf(source, value, CompareOptions.Ordinal);
}
internal static int IndexOf(string source, string value)
{
return InvariantCompareInfo.IndexOf(source, value, CompareOptions.Ordinal);
}
internal static int IndexOf(string source, char value, int startIndex)
{
return InvariantCompareInfo.IndexOf(source, value, startIndex, CompareOptions.Ordinal);
}
internal static int IndexOf(string source, string value, int startIndex)
{
return InvariantCompareInfo.IndexOf(source, value, startIndex, CompareOptions.Ordinal);
}
internal static int LastIndexOf(string source, string value)
{
return InvariantCompareInfo.LastIndexOf(source, value, CompareOptions.Ordinal);
}
internal static bool StartsWith(string source, string prefix)
{
return InvariantCompareInfo.IsPrefix(source, prefix, CompareOptions.Ordinal);
}
internal static bool StartsWithIgnoreCase(string source, string prefix)
{
return InvariantCompareInfo.IsPrefix(source, prefix, CompareOptions.OrdinalIgnoreCase);
}
internal static bool EndsWith(string source, string suffix)
{
return InvariantCompareInfo.IsSuffix(source, suffix, CompareOptions.Ordinal);
}
internal static string GetTypeName(object obj)
{
return GetTypeName(obj.GetType());
}
internal static string GetTypeName(Type t)
{
return t.FullName;
}
}
}
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