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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 <stddef.h> | |
9 | |
10 #include "net/base/net_export.h" | |
11 #include "net/spdy/spdy_pinnable_buffer_piece.h" | |
12 | |
13 namespace net { | |
14 | |
15 // Reader class which simplifies reading contiguously from | |
16 // from a disjoint buffer prefix & suffix. | |
17 class NET_EXPORT_PRIVATE SpdyPrefixedBufferReader { | |
18 public: | |
19 SpdyPrefixedBufferReader(const char* prefix, size_t prefix_length, | |
20 const char* suffix, size_t suffix_length); | |
21 | |
22 // Returns number of bytes available to be read. | |
23 size_t Available(); | |
24 | |
25 // Reads |count| bytes, copying into |*out|. Returns true on success, | |
26 // false if not enough bytes were available. | |
27 bool ReadN(size_t count, char* out); | |
28 | |
29 // Reads |count| bytes, returned in |*out|. Returns true on success, | |
30 // false if not enough bytes were available. | |
31 bool ReadN(size_t count, SpdyPinnableBufferPiece* out); | |
32 | |
33 private: | |
34 const char* prefix_; | |
35 const char* suffix_; | |
36 | |
37 size_t prefix_length_; | |
38 size_t suffix_length_; | |
39 }; | |
40 | |
41 } // namespace net | |
42 | |
43 #endif // NET_SPDY_SPDY_PREFIXED_BUFFER_READER_H_ | |
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