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#include "Writer.hpp"
#include <boost/algorithm/string/predicate.hpp>
#ifdef MAEPARSER_HAVE_BOOST_IOSTREAMS
#include <boost/iostreams/device/file.hpp>
#include <boost/iostreams/filter/gzip.hpp>
#include <boost/iostreams/filtering_stream.hpp>
#endif
#include <fstream>
#include <iostream>
#include <sstream>
#include <utility>
#include "MaeBlock.hpp"
using namespace std;
using boost::algorithm::ends_with;
#ifdef MAEPARSER_HAVE_BOOST_IOSTREAMS
using boost::iostreams::file_sink;
using boost::iostreams::filtering_ostream;
#endif
namespace schrodinger
{
namespace mae
{
Writer::Writer(std::shared_ptr<ostream> stream) : m_out(std::move(stream))
{
write_opening_block();
}
Writer::Writer(const std::string& fname)
{
const auto ios_mode = std::ios_base::out | std::ios_base::binary;
if (ends_with(fname, ".maegz") || ends_with(fname, ".mae.gz")) {
#ifdef MAEPARSER_HAVE_BOOST_IOSTREAMS
auto* gzip_stream = new filtering_ostream();
gzip_stream->push(boost::iostreams::gzip_compressor());
gzip_stream->push(file_sink(fname, ios_mode));
m_out.reset(static_cast<ostream*>(gzip_stream));
#else
std::stringstream ss;
ss << "Unable to open " << fname << " for writing, "
<< "as maeparser was compiled without boost::iostreams support";
throw std::runtime_error(ss.str());
#endif
} else {
auto* file_stream = new ofstream(fname, ios_mode);
m_out.reset(static_cast<ostream*>(file_stream));
}
if (m_out->fail()) {
std::stringstream ss;
ss << "Failed to open file \"" << fname << "\" for writing operation.";
throw std::runtime_error(ss.str());
}
write_opening_block();
}
void Writer::write(const std::shared_ptr<Block>& block)
{
block->write(*m_out);
}
void Writer::write_opening_block()
{
shared_ptr<Block> b = make_shared<Block>("");
b->setStringProperty("s_m_m2io_version", "2.0.0");
write(b);
}
} // namespace mae
} // namespace schrodinger
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