mosesdecoder/phrase-extract/OutputFileStream.cpp
Jeroen Vermeulen ea9b097aba OutputFileStream: accept ‘-’ for “stdout”.
This is a common convention: when a program gets a dash as the path of a
file that it should write, it writes to standard output instead.

Enhances portability to systems that don't have /dev/stdout.
2015-05-26 15:06:04 +07:00

91 lines
2.2 KiB
C++

// $Id: OutputFileStream.cpp 2780 2010-01-29 17:11:17Z bojar $
/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2006 University of Edinburgh
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
***********************************************************************/
#include <iostream>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/iostreams/filter/gzip.hpp>
#include "OutputFileStream.h"
#include "gzfilebuf.h"
using namespace std;
using namespace boost::algorithm;
namespace Moses
{
OutputFileStream::OutputFileStream()
:boost::iostreams::filtering_ostream()
,m_outFile(NULL)
,m_open(false)
{
}
OutputFileStream::OutputFileStream(const std::string &filePath)
:m_outFile(NULL)
,m_open(false)
{
Open(filePath);
}
OutputFileStream::~OutputFileStream()
{
Close();
}
bool OutputFileStream::Open(const std::string &filePath)
{
assert(!m_open);
if (filePath == std::string("-")) {
// Write to standard output. Leave m_outFile null.
this->push(std::cout);
} else {
m_outFile = new ofstream(filePath.c_str(), ios_base::out | ios_base::binary);
if (m_outFile->fail()) {
return false;
}
if (ends_with(filePath, ".gz")) {
this->push(boost::iostreams::gzip_compressor());
}
this->push(*m_outFile);
}
m_open = true;
return true;
}
void OutputFileStream::Close()
{
if (!m_open) return;
this->flush();
if (m_outFile) {
this->pop(); // file
m_outFile->close();
delete m_outFile;
m_outFile = NULL;
}
m_open = false;
}
}