1 /* 2 * libjingle 3 * Copyright 2004--2005, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TALK_BASE_BYTEBUFFER_H_ 29 #define TALK_BASE_BYTEBUFFER_H_ 30 31 #include <string> 32 33 #include "talk/base/basictypes.h" 34 #include "talk/base/constructormagic.h" 35 36 namespace talk_base { 37 38 class ByteBuffer { 39 public: 40 ByteBuffer(); 41 ByteBuffer(const char* bytes, size_t len); 42 explicit ByteBuffer(const char* bytes); // uses strlen 43 ~ByteBuffer(); 44 Data()45 const char* Data() const { return bytes_ + start_; } Length()46 size_t Length() const { return end_ - start_; } Capacity()47 size_t Capacity() const { return size_ - start_; } 48 49 bool ReadUInt8(uint8* val); 50 bool ReadUInt16(uint16* val); 51 bool ReadUInt24(uint32* val); 52 bool ReadUInt32(uint32* val); 53 bool ReadUInt64(uint64* val); 54 bool ReadString(std::string* val, size_t len); // append to val 55 bool ReadBytes(char* val, size_t len); 56 57 void WriteUInt8(uint8 val); 58 void WriteUInt16(uint16 val); 59 void WriteUInt24(uint32 val); 60 void WriteUInt32(uint32 val); 61 void WriteUInt64(uint64 val); 62 void WriteString(const std::string& val); 63 void WriteBytes(const char* val, size_t len); 64 65 void Resize(size_t size); 66 void Consume(size_t size); 67 void Shift(size_t size); 68 69 private: 70 char* bytes_; 71 size_t size_; 72 size_t start_; 73 size_t end_; 74 75 // There are sensible ways to define these, but they aren't needed in our code 76 // base. 77 DISALLOW_COPY_AND_ASSIGN(ByteBuffer); 78 }; 79 80 } // namespace talk_base 81 82 #endif // TALK_BASE_BYTEBUFFER_H_ 83