void swapstdout(std::ostream& buf)
{
// Switch the stream buffer with std::cout, which is used by Print.
std::streambuf* cout_strbuf(std::cout.rdbuf());
std::cout.rdbuf(buf.rdbuf());
buf.rdbuf(cout_strbuf);
}
BufferStream::BufferStream(std::ostream &stream, QByteArray &buffer)
: stream_(stream)
, outputBuffer_(buffer)
{
oldBuffer_ = stream.rdbuf();
stream.rdbuf(this);
}
StreamRedirect( std::ostream& stream, std::string& targetString )
: m_stream( stream ),
m_prevBuf( stream.rdbuf() ),
m_targetString( targetString )
{
stream.rdbuf( m_oss.rdbuf() );
}
/**
Redirect a stream to some other stream, by default a null stream.
\param out Stream to redirect.
\param dst Destination stream.
\return Context for stream restoration (see \ref restore()).
*/
inline RedirectStream redirect(std::ostream& out, std::ostream& dst)
{
RedirectStream redir;
redir.m_buf = out.rdbuf();
out.rdbuf(dst.rdbuf());
return redir;
}
/**
Redirect a stream to a null stream.
\param out Stream to redirect.
\return Context for stream restoration (see \ref restore()).
*/
inline RedirectStream redirect(std::ostream& out)
{
RedirectStream redir;
redir.m_buf = out.rdbuf();
out.rdbuf(redir.m_null->rdbuf());
return redir;
}
void Reporter::printCurrentOrderBook(std::ostream& os) const
{
StrStream strstream;
auto cap = strstream.capacity() - 128;
const auto nbBids = bids_.size();
const auto nbAsks = asks_.size();
os << "Full Bids/Asks:\n";
auto i = 0U;
while (1)
{
StrStream strstream_tmp;
if (i < nbBids)
{
Limit bid = bids_[i];
strstream_tmp << i;
strstream_tmp.append(6, ' ');
strstream_tmp << ": " << getQty(bid) << " @ " << getPrice(bid);
strstream_tmp.append(40, ' ');
if (i < nbAsks)
{
Limit ask = asks_[i];
strstream_tmp << getQty(ask) << " @ " << getPrice(ask) << '\n';
}
else
{
strstream_tmp << "empty\n";
}
}
else
{
strstream_tmp << i;
strstream_tmp.append(6, ' ');
strstream_tmp << ": empty";
strstream_tmp.append(40, ' ');
if (i < nbAsks)
{
Limit ask = asks_[i];
strstream_tmp << getQty(ask) << " @ " << getPrice(ask) << '\n';
}
else
{
strstream << strstream_tmp;
strstream << "empty\n";
break;
}
}
if (strstream.length() + strstream_tmp.length() > cap)
{
os.rdbuf()->sputn(strstream.c_str(), strstream.length());
strstream.clear();
}
strstream << strstream_tmp;
++i;
}
os.rdbuf()->sputn(strstream.c_str(), strstream.length());
os.flush();
}
/**
Redirect a stream to some file.
\param out Stream to redirect.
\param file Name of file where stream should be redirected.
\return Context for stream restoration (see \ref restore()).
*/
inline RedirectStream redirect(std::ostream& out, const std::string& file)
{
RedirectStream redir;
redir.m_out = new std::ofstream(file);
redir.m_buf = out.rdbuf();
out.rdbuf(redir.m_out->rdbuf());
return redir;
}
void set(std::istream& in, std::ostream& out, std::ostream& err) {
if (not activated) {
using namespace std;
in_buf = cin.rdbuf(); out_buf = cout.rdbuf(); err_buf = cerr.rdbuf();
in_state = cin.rdstate(); out_state = cin.rdstate(); err_state = cerr.rdstate();
cin.rdbuf(in.rdbuf()); cout.rdbuf(out.rdbuf()); cerr.rdbuf(err.rdbuf());
cin.exceptions(ios_base::goodbit); cout.exceptions(ios_base::goodbit); cerr.exceptions(ios_base::goodbit);
cin.clear(in.rdstate()); cout.clear(out.rdstate()); cerr.clear(err.rdstate());
}
}
nc_window_streambuf::nc_window_streambuf(WINDOW* _p, std::ostream& _os, unsigned long _cursesAttr):
m_pnl(_p),
m_flags(_cursesAttr),
m_os(&_os),
m_old(_os.rdbuf())
{
setp(0, 0);
setg(0, 0, 0);
_os.rdbuf(this);
scrollok(_p, true);
mvwinch(_p, 0, 0);
}
DebugStream::DebugStream(std::ostream &stream, QPlainTextEdit *text_edit)
: stream_(stream)
{
logWindow_ = text_edit;
QObject::connect(this
, &DebugStream::appendLog
, logWindow_
, &QPlainTextEdit::appendPlainText);
oldBuffer_ = stream.rdbuf();
stream.rdbuf(this);
}
reset_level_buf::reset_level_buf(std::ostream& Stream) :
m_stream(Stream),
m_streambuf(Stream.rdbuf())
{
setp(0, 0);
m_stream.rdbuf(this);
}
/** \brief Create a ZIP output stream object.
*
* This constructor creates a zip stream from an existing standard
* output stream.
*
* \warning
* You must keep the output stream valid for as long as this object
* exists (although this object close() function can be used to close
* the \p os stream.)
*
* \param[in,out] os ostream to which the compressed zip archive is written.
* \param[in] compression_level The compression level to use to compress.
*/
GZIPOutputStream::GZIPOutputStream(std::ostream& os, FileEntry::CompressionLevel compression_level)
: std::ostream( nullptr )
//, m_ofs(nullptr) -- auto-init
, m_ozf(new GZIPOutputStreambuf(os.rdbuf(), compression_level))
{
init(m_ozf.get());
}
virtual WriteResult writeNode( const osg::Node& node, std::ostream& fOut, const Options* options ) const
{
// Convert Options to FltOptions.
ExportOptions* fltOpt = new ExportOptions( options );
fltOpt->parseOptionsString();
// If user didn't specify a temp dir, use the output directory
// that was implicit in the output file name.
if (fltOpt->getTempDir().empty())
fltOpt->setTempDir( _implicitPath );
if (!fltOpt->getTempDir().empty())
{
// If the temp directory doesn't already exist, make it.
if ( !osgDB::makeDirectory( fltOpt->getTempDir() ) )
{
osg::notify( osg::FATAL ) << "fltexp: Error creating temp dir: " << fltOpt->getTempDir() << std::endl;
return WriteResult::ERROR_IN_WRITING_FILE;
}
}
flt::DataOutputStream dos( fOut.rdbuf(), fltOpt->getValidateOnly() );
flt::FltExportVisitor fnv( &dos, fltOpt );
// Hm. 'node' is const, but in order to write out this scene graph,
// must use Node::accept() which requires 'node' to be non-const.
// Pretty much requires casting away const.
osg::Node* nodeNonConst = const_cast<osg::Node*>( &node );
if (!nodeNonConst)
return WriteResult::ERROR_IN_WRITING_FILE;
nodeNonConst->accept( fnv );
fnv.complete( node );
return fltOpt->getWriteResult();
}
Logger::Logger( std::ostream& str ):
_logLevel( Warning ),
_displayFilePosition( true ),
_out( str.rdbuf() )
{
}
void Reporter::printMidQuotesAndTrades(std::ostream& os, Errors& errors)
{
StrStream strstream;
if (unlikely(bids_.begin() == bids_.end() || asks_.begin() == asks_.end()))
{
strstream << "NAN" << '\n';
}
else if (receivedNewTrade_)
{
strstream << getQty(currentTrade_) << '@' << getPrice(currentTrade_) << '\n';
receivedNewTrade_ = false;
detectCross_ = false;
}
else if (unlikely(getPrice(*bids_.begin()) >= getPrice(*asks_.begin())))
{
if (likely(!detectCross_)) detectCross_ = true;
else
{
strstream << "Cross BID (" << getPrice(*bids_.begin()) << ")/ASK(" << getPrice(*asks_.begin()) << ')' << '\n';
++errors.bestBidEqualOrUpperThanBestAsk;
}
}
else
{
Price midQuote = (getPrice(*bids_.begin())+getPrice(*asks_.begin()))/2;
strstream << midQuote << '\n';
}
os.rdbuf()->sputn(strstream.c_str(), strstream.length());
os.flush();
}
syslog_buf::syslog_buf(std::ostream& Stream) :
m_stream(Stream),
m_streambuf(Stream.rdbuf())
{
setp(0, 0);
m_stream.rdbuf(this);
}
gzostream::gzostream( std::ostream & dest,
unsigned int buffer_size )
: std::ostream( static_cast< std::streambuf * >( 0 ) )
, M_gzstreambuf( *(dest.rdbuf()), buffer_size )
{
this->init( &M_gzstreambuf );
}
color_level_buf::color_level_buf(std::ostream& Stream) :
m_stream(Stream),
m_streambuf(Stream.rdbuf()),
m_start_new_line(true)
{
setp(0, 0);
m_stream.rdbuf(this);
}
timestamp_buf::timestamp_buf(std::ostream& Stream) :
m_stream(Stream),
m_streambuf(Stream.rdbuf()),
m_start_new_line(true)
{
setp(0, 0);
m_stream.rdbuf(this);
}
GZIPOutputStream::GZIPOutputStream( std::ostream &os )
: ostream( 0 ),
ofs( 0 )
{
ozf = new GZIPOutputStreambuf( os.rdbuf() ) ;
init( ozf ) ;
}
fold_duplicates_buf::fold_duplicates_buf(std::ostream& Stream) :
m_stream(Stream),
m_streambuf(Stream.rdbuf()),
m_duplicate_count(0)
{
setp(0, 0);
m_stream.rdbuf(this);
}
filter_by_level_buf::filter_by_level_buf(const log_level_t MinimumLevel, std::ostream& Stream) :
m_stream(Stream),
m_streambuf(Stream.rdbuf()),
m_minimum_level(MinimumLevel)
{
setp(0, 0);
m_stream.rdbuf(this);
}
/**
Restore a stream redirected with redirect().
\param out Stream to be restored.
\param redir RedirectStream returned from corresponding
\ref redirect() call.
*/
inline void restore(std::ostream& out, RedirectStream& redir)
{
out.rdbuf(redir.m_buf);
if (redir.m_out)
redir.m_out->close();
redir.m_out = NULL;
redir.m_buf = NULL;
}
ZipOutputStream::ZipOutputStream( std::ostream &os )
: std::ostream( 0 ),
// SGIs basic_ifstream calls istream with 0, but calls basic_ios constructor first??
ofs( 0 )
{
ozf = new ZipOutputStreambuf( os.rdbuf() ) ;
init( ozf ) ;
}
tag_buf::tag_buf(const std::string& Tag, std::ostream& Stream) :
m_stream(Stream),
m_streambuf(Stream.rdbuf()),
m_start_new_line(true),
m_tag(Tag + " ")
{
setp(0, 0);
m_stream.rdbuf(this);
}
static bool setFd(std::ostream &stream, int *state_fd, int fd)
{
std::lock_guard<std::mutex> lock(s_stateMutex);
if (*state_fd != -1)
return false;
*state_fd = fd;
delete dynamic_cast<FdWriter*>(stream.rdbuf(new FdWriter(fd)));
return true;
}
// Save & change and restore stream properties
void
saver_tests_2
(
std::istream & input,
std::ostream & output,
std::ostream & err
)
{
using std::locale;
using std::ios_base;
boost::io::ios_tie_saver const its( input, &err );
boost::io::ios_rdbuf_saver const irs( output, err.rdbuf() );
boost::io::ios_iword_saver const iis( output, my_index, 69L );
boost::io::ios_pword_saver const ipws( output, my_index, &err );
output << "The data is (a third time; adding the numbers):\n";
boost::io::ios_flags_saver const ifls( output, (output.flags()
& ~ios_base::adjustfield) | ios_base::showpos | ios_base::boolalpha
| (ios_base::internal & ios_base::adjustfield) );
boost::io::ios_precision_saver const iprs( output, 9 );
boost::io::ios_fill_saver const ifis( output, '@' );
output << '\t' << test_string << '\n';
boost::io::ios_width_saver const iws( output, 12 );
output.put( '\t' );
output << test_num1 + test_num2;
output.put( '\n' );
locale loc( locale::classic(),
new backward_bool_names );
boost::io::ios_locale_saver const ils( output, loc );
output << '\t' << test_bool << '\n';
BOOST_CHECK( &err == output.pword(my_index) );
BOOST_CHECK( 69L == output.iword(my_index) );
try
{
boost::io::ios_exception_saver const ies( output, ios_base::eofbit );
boost::io::ios_iostate_saver const iis( output, output.rdstate()
| ios_base::eofbit );
BOOST_ERROR( "previous line should have thrown" );
}
catch ( ios_base::failure &f )
{
err << "Got the expected I/O failure: \"" << f.what() << "\".\n";
BOOST_CHECK( output.exceptions() == ios_base::goodbit );
}
catch ( ... )
{
err << "Got an unknown error when doing exception test!\n";
throw;
}
}
portable_binary_oarchive(std::ostream & os, unsigned flags = 0) :
primitive_base_t(
* os.rdbuf(),
0 != (flags & boost::archive::no_codecvt)
),
archive_base_t(flags),
m_flags(flags & (endian_big | endian_little))
{
init(flags);
}
void redirect (std::ostream& strm, const std::string& dateiname)
{
// Datei (mit dazugehörigem Puffer) zum Schreiben öffnen
std::ofstream datei(dateiname.c_str());
// Ausgabepuffer des übergebenen Streams merken
std::streambuf* strm_puffer = strm.rdbuf();
// Ausgaben in die Datei umlenken
strm.rdbuf(datei.rdbuf());
datei << "direkt in die Datei geschriebene Zeile" << std::endl;
strm << "auf den umgelenkten Stream geschriebene Zeile"
<< std::endl;
// alten Ausgabepuffer des übergebenen Streams restaurieren
strm.rdbuf(strm_puffer);
} // schließt die Datei und den dazugehörigen Puffer
/*!
*/
gzofilterstream::gzofilterstream( std::ostream & dest,
int level,
std::size_t buf_size )
: std::ostream( static_cast< std::streambuf * >( 0 ) )
, M_filter_buf( *(dest.rdbuf()), level, buf_size )
{
// std::basic_ios::init( basic_streambuf<charT,traits>* sb );
this->init( &M_filter_buf );
}
