1 files changed, 57 insertions, 0 deletions
diff --git a/crypto/src/cms/CMSProcessableFile.cs b/crypto/src/cms/CMSProcessableFile.cs
new file mode 100644
index 000000000..548dc8efb
--- /dev/null
+++ b/crypto/src/cms/CMSProcessableFile.cs
@@ -0,0 +1,57 @@
+#if !PORTABLE
+
+using System;
+using System.IO;
+
+using Org.BouncyCastle.Utilities.IO;
+
+namespace Org.BouncyCastle.Cms
+{
+	/**
+	* a holding class for a file of data to be processed.
+	*/
+	public class CmsProcessableFile
+		: CmsProcessable, CmsReadable
+	{
+		private const int DefaultBufSize = 32 * 1024;
+
+		private readonly FileInfo	_file;
+		private readonly int		_bufSize;
+
+		public CmsProcessableFile(
+			FileInfo file)
+			: this(file, DefaultBufSize)
+		{
+		}
+
+		public CmsProcessableFile(
+			FileInfo	file,
+			int			bufSize)
+		{
+			_file = file;
+			_bufSize = bufSize;
+		}
+
+		public virtual Stream GetInputStream()
+		{
+			return new FileStream(
+				_file.FullName, FileMode.Open, FileAccess.Read, FileShare.Read, _bufSize);
+		}
+
+		public virtual void Write(
+			Stream zOut)
+		{
+			Stream inStr = GetInputStream();
+			Streams.PipeAll(inStr, zOut);
+			inStr.Close();
+		}
+
+		/// <returns>The file handle</returns>
+		[Obsolete]
+		public virtual object GetContent()
+		{
+			return _file;
+		}
+	}
+}
+#endif
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