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/* |
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/* |
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* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved. |
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* |
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* The University of Notre Dame grants you ("Licensee") a |
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* redistribute this software in source and binary code form, provided |
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* that the following conditions are met: |
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* |
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* 1. Acknowledgement of the program authors must be made in any |
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* publication of scientific results based in part on use of the |
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* program. An acceptable form of acknowledgement is citation of |
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* the article in which the program was described (Matthew |
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* A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher |
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* J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented |
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* Parallel Simulation Engine for Molecular Dynamics," |
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* J. Comput. Chem. 26, pp. 252-271 (2005)) |
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* |
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* 2. Redistributions of source code must retain the above copyright |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 3. Redistributions in binary form must reproduce the above copyright |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the |
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* distribution. |
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* arising out of the use of or inability to use software, even if the |
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* University of Notre Dame has been advised of the possibility of |
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* such damages. |
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* |
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* SUPPORT OPEN SCIENCE! If you use OpenMD or its source code in your |
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* research, please cite the appropriate papers when you publish your |
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* work. Good starting points are: |
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* |
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* [1] Meineke, et al., J. Comp. Chem. 26, 252-271 (2005). |
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* [2] Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006). |
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* [3] Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008). |
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* [4] Vardeman & Gezelter, in progress (2009). |
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*/ |
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#ifndef UTILS_MULTISTREAMBUF_HPP |
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#define UTILS_MULTISTREAMBUF_HPP |
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#include <streambuf> |
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#include <vector> |
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namespace oopse { |
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namespace OpenMD { |
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|
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/** |
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* @class basic_teebuf basic_teebuf.hpp "utils/basic_teebuf.hpp" |
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* @brief As a subclass of basic_streambuf, basic_teebuf can operate on multiple stream simultaneously. |
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* @code |
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* std::ofstream file1("file1"); |
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* std::ofstream file2("file22"); |
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* std::vector<std::streambuf*> buffers; |
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* buffers.push_back(file1.rdbuf()); |
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* buffers.push_back(file2.rdbuf()); |
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* teebuf tmp(buffers.begin(), buffers.end()); |
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* std::ostream myOs(&tmp); |
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* myOs << "hello world"; |
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* @endcode |
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*/ |
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/** |
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* @class basic_teebuf basic_teebuf.hpp "utils/basic_teebuf.hpp" |
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* @brief As a subclass of basic_streambuf, basic_teebuf can operate on multiple stream simultaneously. |
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* @code |
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* std::ofstream file1("file1"); |
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* std::ofstream file2("file22"); |
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* std::vector<std::streambuf*> buffers; |
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* buffers.push_back(file1.rdbuf()); |
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* buffers.push_back(file2.rdbuf()); |
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* teebuf tmp(buffers.begin(), buffers.end()); |
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* std::ostream myOs(&tmp); |
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* myOs << "hello world"; |
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* @endcode |
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*/ |
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|
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template <class CharT, class Traits = std::char_traits<CharT> > |
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class basic_teebuf: public std::basic_streambuf<CharT, Traits> { |
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public: |
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typedef std::basic_streambuf<CharT, Traits> streambuf_type; |
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typedef Traits traits_type; |
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typedef CharT char_type; |
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typedef typename traits_type::int_type int_type; |
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template <class CharT, class Traits = std::char_traits<CharT> > |
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class basic_teebuf: public std::basic_streambuf<CharT, Traits> { |
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public: |
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typedef std::basic_streambuf<CharT, Traits> streambuf_type; |
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typedef Traits traits_type; |
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typedef CharT char_type; |
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typedef typename traits_type::int_type int_type; |
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|
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template <typename ForwardIterator> |
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basic_teebuf(ForwardIterator begin, ForwardIterator end) : buffers_(begin, end){ |
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template <typename ForwardIterator> |
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basic_teebuf(ForwardIterator begin, ForwardIterator end) : buffers_(begin, end){ |
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} |
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} |
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protected: |
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int_type overflow(int_type c = traits_type::eof()) { |
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protected: |
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int_type overflow(int_type c = traits_type::eof()) { |
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|
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//avoid writing eof to stream |
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if (c == traits_type::eof()) { |
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return traits_type::eof(); |
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} |
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//avoid writing eof to stream |
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if (c == traits_type::eof()) { |
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return traits_type::eof(); |
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} |
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|
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typename std::vector<streambuf_type*>::iterator iter; //typename is needed since it's a dependant name |
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for (iter = buffers_.begin(); iter != buffers_.end(); ++iter) { |
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if ((*iter)->sputc(c) == traits_type::eof()) { |
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return traits_type::eof(); |
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} |
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} |
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typename std::vector<streambuf_type*>::iterator iter; //typename is needed since it's a dependant name |
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for (iter = buffers_.begin(); iter != buffers_.end(); ++iter) { |
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if ((*iter)->sputc(c) == traits_type::eof()) { |
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return traits_type::eof(); |
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} |
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} |
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return traits_type::not_eof(c); |
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} |
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return traits_type::not_eof(c); |
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} |
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int sync() { |
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int sync() { |
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//flush buffer, checking return for eof. |
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if (traits_type::eq_int_type(overflow(traits_type::eof()), traits_type::eof())) { |
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return -1; |
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} |
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//flush buffer, checking return for eof. |
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if (traits_type::eq_int_type(overflow(traits_type::eof()), traits_type::eof())) { |
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return -1; |
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} |
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|
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//flush streams |
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typename std::vector<streambuf_type*>::iterator iter; |
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for (iter = buffers_.begin(); iter != buffers_.end(); ++iter) { |
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if ((*iter)->pubsync() == -1) { |
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return -1; |
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} |
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} |
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//flush streams |
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typename std::vector<streambuf_type*>::iterator iter; |
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for (iter = buffers_.begin(); iter != buffers_.end(); ++iter) { |
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if ((*iter)->pubsync() == -1) { |
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return -1; |
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} |
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} |
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return 0; |
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} |
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return 0; |
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} |
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|
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private: |
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std::vector<streambuf_type*> buffers_; |
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}; |
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private: |
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std::vector<streambuf_type*> buffers_; |
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}; |
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|
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typedef basic_teebuf<char> TeeBuf; |
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typedef basic_teebuf<char> TeeBuf; |
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} |
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#endif |
