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