Initial import of old CVS repository

1 files changed, 73 insertions, 0 deletions

diff --git a/crypto/src/util/Enums.cs b/crypto/src/util/Enums.cs
new file mode 100644
index 000000000..eaf49e1b3
--- /dev/null
+++ b/crypto/src/util/Enums.cs
@@ -0,0 +1,73 @@
+using System;
+using System.Text;
+
+#if NETCF_1_0 || NETCF_2_0 || SILVERLIGHT
+using System.Collections;
+using System.Reflection;
+#endif
+
+using Org.BouncyCastle.Utilities.Date;
+
+namespace Org.BouncyCastle.Utilities
+{
+    internal sealed class Enums
+    {
+        private Enums()
+        {
+        }
+
+        internal static Enum GetEnumValue(System.Type enumType, string s)
+        {
+            if (!enumType.IsEnum)
+                throw new ArgumentException("Not an enumeration type", "enumType");
+
+            // We only want to parse single named constants
+            if (s.Length > 0 && char.IsLetter(s[0]) && s.IndexOf(',') < 0)
+            {
+                s = s.Replace('-', '_');
+                s = s.Replace('/', '_');
+
+#if NETCF_1_0
+                FieldInfo field = enumType.GetField(s, BindingFlags.Static | BindingFlags.Public);
+                if (field != null)
+                {
+                    return (Enum)field.GetValue(null);
+                }
+#else
+                return (Enum)Enum.Parse(enumType, s, false);
+#endif		
+            }
+
+            throw new ArgumentException();
+        }
+
+        internal static Array GetEnumValues(System.Type enumType)
+        {
+            if (!enumType.IsEnum)
+                throw new ArgumentException("Not an enumeration type", "enumType");
+
+#if NETCF_1_0 || NETCF_2_0 || SILVERLIGHT
+            IList result = Platform.CreateArrayList();
+            FieldInfo[] fields = enumType.GetFields(BindingFlags.Static | BindingFlags.Public);
+            foreach (FieldInfo field in fields)
+            {
+                // Note: Argument to GetValue() ignored since the fields are static,
+                //     but Silverlight for Windows Phone throws exception if we pass null
+                result.Add(field.GetValue(enumType));
+            }
+            object[] arr = new object[result.Count];
+            result.CopyTo(arr, 0);
+            return arr;
+#else
+            return Enum.GetValues(enumType);
+#endif
+        }
+
+        internal static Enum GetArbitraryValue(System.Type enumType)
+        {
+            Array values = GetEnumValues(enumType);
+            int pos = (int)(DateTimeUtilities.CurrentUnixMs() & int.MaxValue) % values.Length;
+            return (Enum)values.GetValue(pos);
+        }
+    }
+}