Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_transform / lib / SecTransformReadTransform.h

diff --git a/Security/libsecurity_transform/lib/SecTransformReadTransform.h b/Security/libsecurity_transform/lib/SecTransformReadTransform.h
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+/*
+ * Copyright (c) 2010-2011 Apple Inc. All Rights Reserved.
+ * 
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifndef _SEC_TRANSFORM_READ_TRANSFORM_H
+#define _SEC_TRANSFORM_READ_TRANSFORM_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <Security/SecTransform.h>
+
+/*!
+       @header
+
+                       The read transform reads bytes from a instance.  The bytes are
+                       sent as CFDataRef instances to the OUTPUT attribute of the
+                       transform.
+                               
+                       This transform recognizes the following additional attributes
+                       that can be used to modify its behavior:
+                               
+                       MAX_READSIZE (expects CFNumber):  changes the maximum number of
+                       bytes the transform will attempt to read from the stream.  Note
+                       that the transform may deliver fewer bytes than this depending
+                       on the stream being used.
+*/
+
+/*!
+       @function       SecTransformCreateReadTransformWithReadStream
+       
+       @abstract       Creates a read transform from a CFReadStreamRef
+       
+       @param inputStream      The stream that is to be opened and read from when
+                               the chain executes.
+*/
+
+SecTransformRef SecTransformCreateReadTransformWithReadStream(CFReadStreamRef inputStream)
+       __OSX_AVAILABLE_STARTING(__MAC_10_7,__IPHONE_NA);
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif
+