blocxx
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00001 /******************************************************************************* 00002 * Copyright (C) 2005, Vintela, Inc. All rights reserved. 00003 * Copyright (C) 2006, 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 * * Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * * Neither the name of 00014 * Vintela, Inc., 00015 * nor Novell, Inc., 00016 * nor the names of its contributors or employees may be used to 00017 * endorse or promote products derived from this software without 00018 * specific prior written permission. 00019 * 00020 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00021 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00022 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00023 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00024 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00025 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00026 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00027 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00028 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00029 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00030 * POSSIBILITY OF SUCH DAMAGE. 00031 *******************************************************************************/ 00032 00033 00039 #include "blocxx/BLOCXX_config.h" 00040 #include "blocxx/IOIFCStreamBuffer.hpp" 00041 #include <cstring> // for strcmp 00042 00043 namespace BLOCXX_NAMESPACE 00044 { 00045 00046 namespace 00047 { 00048 IOIFCStreamBuffer::EDirectionFlag directionToEnum(const char* direction) 00049 { 00050 if (strcmp(direction, "in") == 0) 00051 { 00052 return IOIFCStreamBuffer::E_IN; 00053 } 00054 if (strcmp(direction, "out") == 0) 00055 { 00056 return IOIFCStreamBuffer::E_OUT; 00057 } 00058 return IOIFCStreamBuffer::E_IN_OUT; 00059 } 00060 } 00061 00063 IOIFCStreamBuffer::IOIFCStreamBuffer(IOIFC* dev, int bufSize, 00064 const char* direction) 00065 : BaseStreamBuffer(directionToEnum(direction), bufSize) 00066 , m_dev(dev) 00067 , m_tied_buf(0) 00068 , m_error_action(IOIFC::E_RETURN_ON_ERROR) 00069 { 00070 } 00072 IOIFCStreamBuffer::IOIFCStreamBuffer(IOIFC* dev, EDirectionFlag direction, int bufSize) 00073 : BaseStreamBuffer(direction, bufSize) 00074 , m_dev(dev) 00075 , m_tied_buf(0) 00076 , m_error_action(IOIFC::E_RETURN_ON_ERROR) 00077 { 00078 } 00080 IOIFCStreamBuffer::~IOIFCStreamBuffer() 00081 { 00082 try 00083 { 00084 sync(); 00085 } 00086 catch (...) 00087 { 00088 } 00089 } 00091 std::streambuf * IOIFCStreamBuffer::tie(std::streambuf * tied_buf) 00092 { 00093 std::streambuf * retval = m_tied_buf; 00094 m_tied_buf = tied_buf; 00095 return retval; 00096 } 00098 void IOIFCStreamBuffer::setErrorAction(IOIFC::ErrorAction error_action) 00099 { 00100 m_error_action = error_action; 00101 } 00102 00104 int 00105 IOIFCStreamBuffer::buffer_from_device(char* c, int n) 00106 { 00107 if (m_tied_buf) 00108 { 00109 m_tied_buf->pubsync(); 00110 } 00111 return m_dev->read(c, n, m_error_action); 00112 } 00114 int 00115 IOIFCStreamBuffer::buffer_to_device(const char* c, int n) 00116 { 00117 while (n > 0) 00118 { 00119 int cnt = m_dev->write(c, n, m_error_action); 00120 if (cnt == -1) // failure 00121 { 00122 return -1; 00123 } 00124 c += cnt; 00125 n -= cnt; 00126 } 00127 return 0; 00128 } 00129 00131 void 00132 IOIFCStreamBuffer::reset() 00133 { 00134 initBuffers(); 00135 } 00136 00137 } // end namespace BLOCXX_NAMESPACE 00138