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88 lines
2.7 KiB
88 lines
2.7 KiB
// util/kaldi-pipebuf.h
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// Copyright 2009-2011 Ondrej Glembek
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// See ../../COPYING for clarification regarding multiple authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
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// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
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// MERCHANTABLITY OR NON-INFRINGEMENT.
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// See the Apache 2 License for the specific language governing permissions and
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// limitations under the License.
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/** @file kaldi-pipebuf.h
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* This is an Kaldi C++ Library header.
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*/
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#ifndef KALDI_UTIL_KALDI_PIPEBUF_H_
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#define KALDI_UTIL_KALDI_PIPEBUF_H_
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#include<string>
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#if !defined(_LIBCPP_VERSION) // libc++
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#include <fstream>
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#else
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#include "util/basic-filebuf.h"
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#endif
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namespace kaldi {
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// This class provides a way to initialize a filebuf with a FILE* pointer
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// directly; it will not close the file pointer when it is deleted.
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// The C++ standard does not allow implementations of C++ to provide
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// this constructor within basic_filebuf, which makes it hard to deal
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// with pipes using completely native C++. This is a workaround
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#ifdef _MSC_VER
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#elif defined(_LIBCPP_VERSION) // libc++
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template<class CharType, class Traits = std::char_traits<CharType> >
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class basic_pipebuf : public basic_filebuf<CharType, Traits> {
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public:
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typedef basic_pipebuf<CharType, Traits> ThisType;
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public:
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basic_pipebuf(FILE *fptr, std::ios_base::openmode mode)
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: basic_filebuf<CharType, Traits>() {
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this->open(fptr, mode);
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if (!this->is_open()) {
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KALDI_WARN << "Error initializing pipebuf"; // probably indicates
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// code error, if the fptr was good.
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return;
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}
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}
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}; // class basic_pipebuf
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#else
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template<class CharType, class Traits = std::char_traits<CharType> >
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class basic_pipebuf : public std::basic_filebuf<CharType, Traits> {
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public:
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typedef basic_pipebuf<CharType, Traits> ThisType;
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public:
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basic_pipebuf(FILE *fptr, std::ios_base::openmode mode)
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: std::basic_filebuf<CharType, Traits>() {
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this->_M_file.sys_open(fptr, mode);
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if (!this->is_open()) {
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KALDI_WARN << "Error initializing pipebuf"; // probably indicates
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// code error, if the fptr was good.
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return;
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}
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this->_M_mode = mode;
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this->_M_buf_size = BUFSIZ;
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this->_M_allocate_internal_buffer();
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this->_M_reading = false;
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this->_M_writing = false;
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this->_M_set_buffer(-1);
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}
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}; // class basic_pipebuf
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#endif // _MSC_VER
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} // namespace kaldi
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#endif // KALDI_UTIL_KALDI_PIPEBUF_H_
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