| 1 | //--------------------------------------------------------------------------
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| 2 |
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| 3 | //////////////////////////////////////////////////////////////////////////
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| 4 | // garren@fnal.gov, July 2006
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| 5 | // event input/output in ascii format for machine reading
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| 6 | // IO_GenEvent format contains HeavyIon and PdfInfo classes
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| 7 | //////////////////////////////////////////////////////////////////////////
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| 8 |
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| 9 | #include "IO_GenEvent.h"
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| 10 | #include "IO_Exception.h"
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| 11 | #include "GenEvent.h"
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| 12 | #include "StreamHelpers.h"
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| 13 |
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| 14 | namespace HepMC {
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| 15 |
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| 16 | IO_GenEvent::IO_GenEvent( const std::string& filename, std::ios::openmode mode )
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| 17 | : m_mode(mode),
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| 18 | m_file(filename.c_str(), mode),
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| 19 | m_ostr(0),
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| 20 | m_istr(0),
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| 21 | m_iostr(0),
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| 22 | m_have_file(false),
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| 23 | m_error_type(IO_Exception::OK),
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| 24 | m_error_message()
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| 25 | {
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| 26 | if ( (m_mode&std::ios::out && m_mode&std::ios::in) ||
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| 27 | (m_mode&std::ios::app && m_mode&std::ios::in) ) {
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| 28 | m_error_type = IO_Exception::InputAndOutput;
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| 29 | m_error_message ="IO_GenEvent::IO_GenEvent Error, open of file requested of input AND output type. Not allowed. Closing file.";
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| 30 | std::cerr << m_error_message << std::endl;
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| 31 | m_file.close();
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| 32 | return;
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| 33 | }
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| 34 | // now we set the streams
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| 35 | m_iostr = &m_file;
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| 36 | if ( m_mode&std::ios::in ) {
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| 37 | m_istr = &m_file;
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| 38 | m_ostr = NULL;
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| 39 | detail::establish_input_stream_info(m_file);
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| 40 | }
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| 41 | if ( m_mode&std::ios::out ) {
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| 42 | m_ostr = &m_file;
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| 43 | m_istr = NULL;
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| 44 | detail::establish_output_stream_info(m_file);
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| 45 | }
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| 46 | m_have_file = true;
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| 47 | }
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| 48 |
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| 49 |
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| 50 | IO_GenEvent::IO_GenEvent( std::istream & istr )
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| 51 | : m_ostr(0),
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| 52 | m_istr(&istr),
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| 53 | m_iostr(&istr),
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| 54 | m_have_file(false),
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| 55 | m_error_type(IO_Exception::OK),
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| 56 | m_error_message()
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| 57 | {
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| 58 | detail::establish_input_stream_info( istr );
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| 59 | }
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| 60 |
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| 61 | IO_GenEvent::IO_GenEvent( std::ostream & ostr )
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| 62 | : m_ostr(&ostr),
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| 63 | m_istr(0),
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| 64 | m_iostr(&ostr),
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| 65 | m_have_file(false),
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| 66 | m_error_type(IO_Exception::OK),
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| 67 | m_error_message()
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| 68 | {
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| 69 | detail::establish_output_stream_info( ostr );
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| 70 | }
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| 71 |
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| 72 | IO_GenEvent::~IO_GenEvent() {
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| 73 | if ( m_ostr != NULL ) {
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| 74 | write_HepMC_IO_block_end(*m_ostr);
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| 75 | }
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| 76 | if(m_have_file) m_file.close();
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| 77 | }
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| 78 |
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| 79 | void IO_GenEvent::use_input_units( Units::MomentumUnit mom,
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| 80 | Units::LengthUnit len ) {
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| 81 | if( m_istr != NULL ) {
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| 82 | set_input_units( *m_istr, mom, len );
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| 83 | }
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| 84 | }
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| 85 |
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| 86 | void IO_GenEvent::print( std::ostream& ostr ) const {
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| 87 | ostr << "IO_GenEvent: unformated ascii file IO for machine reading.\n";
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| 88 | if(m_have_file) ostr << "\tFile openmode: " << m_mode ;
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| 89 | ostr << " stream state: " << m_ostr->rdstate()
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| 90 | << " bad:" << (m_ostr->rdstate()&std::ios::badbit)
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| 91 | << " eof:" << (m_ostr->rdstate()&std::ios::eofbit)
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| 92 | << " fail:" << (m_ostr->rdstate()&std::ios::failbit)
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| 93 | << " good:" << (m_ostr->rdstate()&std::ios::goodbit) << std::endl;
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| 94 | }
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| 95 |
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| 96 | void IO_GenEvent::precision( int size ) {
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| 97 | if( size > 16 ) {
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| 98 | std::cerr << "IO_GenEvent::precision Error, "
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| 99 | << "precision is greater than 16. "
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| 100 | << "Not allowed. Using default precision of 16."
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| 101 | << std::endl;
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| 102 | size = 16;
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| 103 | }
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| 104 | if(m_ostr) {
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| 105 | m_ostr->precision(size);
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| 106 | }
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| 107 | }
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| 108 |
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| 109 | bool IO_GenEvent::fill_next_event( GenEvent* evt ){
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| 110 | //
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| 111 | // reset error type
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| 112 | m_error_type = IO_Exception::OK;
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| 113 | //
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| 114 | // test that evt pointer is not null
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| 115 | if ( !evt ) {
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| 116 | m_error_type = IO_Exception::NullEvent;
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| 117 | m_error_message = "IO_GenEvent::fill_next_event error - passed null event.";
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| 118 | std::cerr << m_error_message << std::endl;
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| 119 | return false;
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| 120 | }
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| 121 | // make sure the stream is good, and that it is in input mode
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| 122 | if ( !(*m_istr) ) return false;
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| 123 | if ( !m_istr ) {
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| 124 | m_error_type = IO_Exception::WrongFileType;
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| 125 | m_error_message = "HepMC::IO_GenEvent::fill_next_event attempt to read from output file.";
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| 126 | std::cerr << m_error_message << std::endl;
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| 127 | return false;
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| 128 | }
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| 129 | // use streaming input
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| 130 | try {
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| 131 | *m_istr >> *evt;
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| 132 | }
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| 133 | catch (IO_Exception& e) {
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| 134 | m_error_type = IO_Exception::InvalidData;
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| 135 | m_error_message = e.what();
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| 136 | evt->clear();
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| 137 | return false;
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| 138 | }
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| 139 | if( evt->is_valid() ) return true;
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| 140 | return false;
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| 141 | }
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| 142 |
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| 143 | void IO_GenEvent::write_event( const GenEvent* evt ) {
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| 144 | /// Writes evt to output stream. It does NOT delete the event after writing.
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| 145 | //
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| 146 | // make sure the state is good, and that it is in output mode
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| 147 | if ( !evt ) return;
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| 148 | if ( m_ostr == NULL ) {
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| 149 | m_error_type = IO_Exception::WrongFileType;
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| 150 | m_error_message = "HepMC::IO_GenEvent::write_event attempt to write to input file.";
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| 151 | std::cerr << m_error_message << std::endl;
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| 152 | return;
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| 153 | }
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| 154 | //
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| 155 | // write event listing key before first event only.
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| 156 | write_HepMC_IO_block_begin(*m_ostr);
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| 157 | // explicit cast is necessary
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| 158 | GenEvent e = *evt;
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| 159 | *m_ostr << e ;
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| 160 | }
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| 161 |
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| 162 | void IO_GenEvent::write_comment( const std::string comment ) {
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| 163 | // make sure the stream is good, and that it is in output mode
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| 164 | if ( !(*m_ostr) ) return;
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| 165 | if ( m_ostr == NULL ) {
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| 166 | m_error_type = IO_Exception::WrongFileType;
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| 167 | m_error_message = "HepMC::IO_GenEvent::write_event attempt to write to input file.";
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| 168 | std::cerr << m_error_message << std::endl;
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| 169 | return;
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| 170 | }
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| 171 | // write end of event listing key if events have already been written
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| 172 | write_HepMC_IO_block_end(*m_ostr);
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| 173 | // insert the comment key before the comment
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| 174 | *m_ostr << "\n" << "HepMC::IO_GenEvent-COMMENT\n";
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| 175 | *m_ostr << comment << std::endl;
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| 176 | }
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| 177 |
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| 178 | } // HepMC
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