00001 /******************************************************************************* 00002 * Copyright (C) 2004 Vintela, Inc. All rights reserved. 00003 * Copyright (C) 2005 Novell, Inc. All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions are met: 00007 * 00008 * - Redistributions of source code must retain the above copyright notice, 00009 * this list of conditions and the following disclaimer. 00010 * 00011 * - Redistributions in binary form must reproduce the above copyright notice, 00012 * this list of conditions and the following disclaimer in the documentation 00013 * and/or other materials provided with the distribution. 00014 * 00015 * - Neither the name of Vintela, Inc., Novell, Inc., nor the names of its 00016 * contributors may be used to endorse or promote products derived from this 00017 * software without specific prior written permission. 00018 * 00019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' 00020 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00021 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00022 * ARE DISCLAIMED. IN NO EVENT SHALL Vintela, Inc., Novell, Inc., OR THE 00023 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00024 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00025 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 00026 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 00027 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 00028 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 00029 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00030 *******************************************************************************/ 00031 00032 00038 #ifndef BLOCXX_BASESTREAMBUFFER_HPP_INCLUDE_GUARD_ 00039 #define BLOCXX_BASESTREAMBUFFER_HPP_INCLUDE_GUARD_ 00040 #include "blocxx/BLOCXX_config.h" 00041 00042 #ifdef BLOCXX_HAVE_STREAMBUF 00043 #include <streambuf> 00044 #else 00045 #include <streambuf.h> 00046 #endif 00047 00048 // The classes and functions defined in this file are not meant for general 00049 // use, they are internal implementation details. They may change at any time. 00050 00051 namespace BLOCXX_NAMESPACE 00052 { 00053 00054 const size_t BASE_BUF_SIZE = 256; 00055 const size_t HTTP_BUF_SIZE = 4096; 00056 class BLOCXX_COMMON_API BaseStreamBuffer : public std::streambuf 00057 { 00058 public: 00065 BaseStreamBuffer(size_t bufSize = BASE_BUF_SIZE, 00066 const char* direction = "io"); 00067 ~BaseStreamBuffer(); 00068 protected: 00069 // for input 00070 int underflow(); 00071 //int pbackfail(int c); 00072 // for output 00073 std::streamsize xsputn(const char* s, std::streamsize n); 00074 virtual int overflow(int c); 00075 virtual int sync(); 00076 virtual void initBuffers(); 00077 virtual void initGetBuffer(); 00078 virtual void initPutBuffer(); 00079 // meant to be overwritten (at least one of them) 00087 virtual int buffer_to_device(const char* c, int n); 00088 00098 virtual int buffer_from_device(char* c, int n); 00099 private: 00100 std::streamsize m_bufSize; 00101 char* m_inputBuffer; 00102 char* m_outputBuffer; 00103 int buffer_in(); 00104 int buffer_out(); 00105 // prohibit copying and assigning 00106 // NO IMPLEMENTATION 00107 BaseStreamBuffer(const BaseStreamBuffer& arg); 00108 BaseStreamBuffer& operator=(const BaseStreamBuffer& arg); 00109 }; 00110 00111 } // end namespace BLOCXX_NAMESPACE 00112 00113 #endif