1 files changed, 182 insertions, 0 deletions
diff --git a/crypto/src/util/Platform.cs b/crypto/src/util/Platform.cs
new file mode 100644
index 000000000..cdfba789e
--- /dev/null
+++ b/crypto/src/util/Platform.cs
@@ -0,0 +1,182 @@
+using System;
+using System.Globalization;
+using System.IO;
+using System.Text;
+
+#if SILVERLIGHT
+using System.Collections.Generic;
+#else
+using System.Collections;
+#endif
+
+namespace Org.BouncyCastle.Utilities
+{
+	internal sealed class Platform
+	{
+		private Platform()
+		{
+		}
+
+#if NETCF_1_0 || NETCF_2_0
+		private static string GetNewLine()
+		{
+			MemoryStream buf = new MemoryStream();
+			StreamWriter w = new StreamWriter(buf, Encoding.UTF8);
+			w.WriteLine();
+			w.Close();
+			byte[] bs = buf.ToArray();
+            return Encoding.UTF8.GetString(bs, 0, bs.Length);
+		}
+#else
+        private static string GetNewLine()
+        {
+            return Environment.NewLine;
+        }
+#endif
+
+        internal static int CompareIgnoreCase(string a, string b)
+        {
+#if SILVERLIGHT
+            return String.Compare(a, b, StringComparison.InvariantCultureIgnoreCase);
+#else
+            return String.Compare(a, b, true);
+#endif
+        }
+
+#if NETCF_1_0 || NETCF_2_0 || SILVERLIGHT
+		internal static string GetEnvironmentVariable(
+			string variable)
+		{
+			return null;
+		}
+#else
+		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;
+			}
+		}
+#endif
+
+#if NETCF_1_0
+		internal static Exception CreateNotImplementedException(
+			string message)
+		{
+			return new Exception("Not implemented: " + message);
+		}
+
+		internal static bool Equals(
+			object	a,
+			object	b)
+		{
+			return a == b || (a != null && b != null && a.Equals(b));
+		}
+#else
+		internal static Exception CreateNotImplementedException(
+			string message)
+		{
+			return new NotImplementedException(message);
+		}
+#endif
+
+#if SILVERLIGHT
+        internal static System.Collections.IList CreateArrayList()
+        {
+            return new List<object>();
+        }
+        internal static System.Collections.IList CreateArrayList(int capacity)
+        {
+            return new List<object>(capacity);
+        }
+        internal static System.Collections.IList CreateArrayList(System.Collections.ICollection collection)
+        {
+            System.Collections.IList result = new List<object>(collection.Count);
+            foreach (object o in collection)
+            {
+                result.Add(o);
+            }
+            return result;
+        }
+        internal static System.Collections.IList CreateArrayList(System.Collections.IEnumerable collection)
+        {
+            System.Collections.IList result = new List<object>();
+            foreach (object o in collection)
+            {
+                result.Add(o);
+            }
+            return result;
+        }
+        internal static System.Collections.IDictionary CreateHashtable()
+        {
+            return new Dictionary<object, object>();
+        }
+        internal static System.Collections.IDictionary CreateHashtable(int capacity)
+        {
+            return new Dictionary<object, object>(capacity);
+        }
+        internal static System.Collections.IDictionary CreateHashtable(System.Collections.IDictionary dictionary)
+        {
+            System.Collections.IDictionary result = new Dictionary<object, object>(dictionary.Count);
+            foreach (System.Collections.DictionaryEntry entry in dictionary)
+            {
+                result.Add(entry.Key, entry.Value);
+            }
+            return result;
+        }
+#else
+        internal static System.Collections.IList CreateArrayList()
+        {
+            return new ArrayList();
+        }
+        internal static System.Collections.IList CreateArrayList(int capacity)
+        {
+            return new ArrayList(capacity);
+        }
+        internal static System.Collections.IList CreateArrayList(System.Collections.ICollection collection)
+        {
+            return new ArrayList(collection);
+        }
+        internal static System.Collections.IList CreateArrayList(System.Collections.IEnumerable collection)
+        {
+            ArrayList result = new ArrayList();
+            foreach (object o in collection)
+            {
+                result.Add(o);
+            }
+            return result;
+        }
+        internal static System.Collections.IDictionary CreateHashtable()
+        {
+            return new Hashtable();
+        }
+        internal static System.Collections.IDictionary CreateHashtable(int capacity)
+        {
+            return new Hashtable(capacity);
+        }
+        internal static System.Collections.IDictionary CreateHashtable(System.Collections.IDictionary dictionary)
+        {
+            return new Hashtable(dictionary);
+        }
+#endif
+
+        internal static string ToLowerInvariant(string s)
+        {
+            return s.ToLower(CultureInfo.InvariantCulture);
+        }
+
+        internal static string ToUpperInvariant(string s)
+        {
+            return s.ToUpper(CultureInfo.InvariantCulture);
+        }
+
+        internal static readonly string NewLine = GetNewLine();
+	}
+}