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/* Copyright 2014 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// The GTMGatherInput stream is an input stream implementation that is to be
// instantiated with an NSArray of NSData objects. It works in the traditional
// scatter/gather vector I/O model. Rather than allocating a big NSData object
// to hold all of the data and performing a copy into that object, the
// GTMGatherInputStream will maintain a reference to the NSArray and read from
// each NSData in turn as the read method is called. You should not alter the
// underlying set of NSData objects until all read operations on this input
// stream have completed.
#import <Foundation/Foundation.h>
#ifndef GTM_NONNULL
#if defined(__has_attribute)
#if __has_attribute(nonnull)
#define GTM_NONNULL(x) __attribute__((nonnull x))
#else
#define GTM_NONNULL(x)
#endif
#else
#define GTM_NONNULL(x)
#endif
#endif
// Avoid multiple declaration of this class.
//
// Note: This should match the declaration of GTMGatherInputStream in GTMMIMEDocument.m
#ifndef GTM_GATHERINPUTSTREAM_DECLARED
#define GTM_GATHERINPUTSTREAM_DECLARED
@interface GTMGatherInputStream : NSInputStream <NSStreamDelegate>
+ (NSInputStream *)streamWithArray:(NSArray *)dataArray GTM_NONNULL((1));
@end
#endif // GTM_GATHERINPUTSTREAM_DECLARED
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