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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef NET_SPDY_SPDY_PREFIXED_BUFFER_READER_H_ | |
| 6 #define NET_SPDY_SPDY_PREFIXED_BUFFER_READER_H_ | |
| 7 | |
| 8 #include "net/base/net_export.h" | |
| 9 #include "net/spdy/spdy_pinnable_buffer_piece.h" | |
| 10 | |
| 11 namespace net { | |
| 12 | |
| 13 // Reader class which simplifies reading contiguously from | |
| 14 // from a disjoint buffer prefix & suffix. | |
| 15 class NET_EXPORT_PRIVATE SpdyPrefixedBufferReader { | |
| 16 public: | |
| 17 SpdyPrefixedBufferReader(const char* prefix, size_t prefix_length, | |
| 18 const char* suffix, size_t suffix_length); | |
| 19 | |
| 20 // Returns number of bytes available to be read. | |
| 21 size_t Available(); | |
| 22 | |
| 23 // Reads |count| bytes, copying into |*out|. Returns true on success, | |
| 24 // false if not enough bytes were available. | |
| 25 bool ReadN(size_t count, char* out); | |
| 26 | |
| 27 // Reads |count| bytes, returned in |*out|. Returns true on success, | |
| 28 // false if not enough bytes were available. | |
| 29 bool ReadN(size_t count, SpdyPinnableBufferPiece* out); | |
| 30 | |
| 31 private: | |
| 32 const char* prefix_; | |
| 33 const char* suffix_; | |
| 34 | |
| 35 size_t prefix_length_; | |
| 36 size_t suffix_length_; | |
| 37 }; | |
| 38 | |
| 39 } // namespace net | |
| 40 | |
| 41 #endif // NET_SPDY_SPDY_PREFIXED_BUFFER_READER_H_ | |
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