1 files changed, 71 insertions, 0 deletions
diff --git a/Crypto/src/util/collections/CollectionUtilities.cs b/Crypto/src/util/collections/CollectionUtilities.cs
new file mode 100644
index 000000000..fd0bdcc7a
--- /dev/null
+++ b/Crypto/src/util/collections/CollectionUtilities.cs
@@ -0,0 +1,71 @@
+using System;
+using System.Collections;
+using System.Text;
+
+namespace Org.BouncyCastle.Utilities.Collections
+{
+ public sealed class CollectionUtilities
+ {
+ private CollectionUtilities()
+ {
+ }
+
+ public static void AddRange(IList to, ICollection range)
+ {
+ foreach (object o in range)
+ {
+ to.Add(o);
+ }
+ }
+
+ public static bool CheckElementsAreOfType(
+ IEnumerable e,
+ Type t)
+ {
+ foreach (object o in e)
+ {
+ if (!t.IsInstanceOfType(o))
+ return false;
+ }
+ return true;
+ }
+
+ public static IDictionary ReadOnly(IDictionary d)
+ {
+ return new UnmodifiableDictionaryProxy(d);
+ }
+
+ public static IList ReadOnly(IList l)
+ {
+ return new UnmodifiableListProxy(l);
+ }
+
+ public static ISet ReadOnly(ISet s)
+ {
+ return new UnmodifiableSetProxy(s);
+ }
+
+ public static string ToString(
+ IEnumerable c)
+ {
+ StringBuilder sb = new StringBuilder("[");
+
+ IEnumerator e = c.GetEnumerator();
+
+ if (e.MoveNext())
+ {
+ sb.Append(e.Current.ToString());
+
+ while (e.MoveNext())
+ {
+ sb.Append(", ");
+ sb.Append(e.Current.ToString());
+ }
+ }
+
+ sb.Append(']');
+
+ return sb.ToString();
+ }
+ }
+}
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