[1] | 1 | //-------------------------------------------------------------------------- |
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| 2 | #ifndef HEPMC_IO_ASCIIPARTICLES_H |
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| 3 | #define HEPMC_IO_ASCIIPARTICLES_H |
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| 4 | |
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| 5 | ////////////////////////////////////////////////////////////////////////// |
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| 6 | // Mikhail.Kirsanov@Cern.CH, 2006 |
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| 7 | // event input/output in ascii format for eye and machine reading |
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| 8 | ////////////////////////////////////////////////////////////////////////// |
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| 9 | // |
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| 10 | // Strategy for reading or writing events as machine readable |
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| 11 | // ascii to a file. When instantiating, the mode of file to be created |
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| 12 | // must be specified. Options are: |
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| 13 | // std::ios::in open file for input |
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| 14 | // std::ios::out open file for output |
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| 15 | // std::ios::trunc erase old file when opening (i.e. ios::out|ios::trunc |
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| 16 | // removes oldfile, and creates a new one for output ) |
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| 17 | // std::ios::app append output to end of file |
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| 18 | // for the purposes of this class, simultaneous input and output mode |
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| 19 | // ( std::ios::in | std::ios::out ) is not allowed. |
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| 20 | // |
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| 21 | // Event listings are preceded by the key: |
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| 22 | // "HepMC::IO_AsciiParticles-START_EVENT_LISTING\n" |
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| 23 | // and terminated by the key: |
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| 24 | // "HepMC::IO_AsciiParticles-END_EVENT_LISTING\n" |
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| 25 | // Comments are allowed. They need not be preceded by anything, though if |
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| 26 | // a comment is written using write_comment( const string ) then it will be |
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| 27 | // preceded by "HepMC::IO_AsciiParticles-COMMENT\n" |
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| 28 | // Each event, vertex, particle, particle data is preceded by |
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| 29 | // "E ","V ","P ","D " respectively. |
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| 30 | // Comments may appear anywhere in the file -- so long as they do not contain |
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| 31 | // any of the 4 start/stop keys. |
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| 32 | // |
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| 33 | |
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| 34 | #include <fstream> |
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| 35 | #include <string> |
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| 36 | #include <map> |
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| 37 | #include <vector> |
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| 38 | #include "HepMC/IO_BaseClass.h" |
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| 39 | |
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| 40 | namespace HepMC { |
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| 41 | |
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| 42 | class GenEvent; |
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| 43 | class GenVertex; |
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| 44 | class GenParticle; |
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| 45 | |
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| 46 | //! event input/output in ascii format for eye and machine reading |
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| 47 | |
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| 48 | /// |
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| 49 | /// \class IO_AsciiParticles |
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| 50 | /// Strategy for reading or writing events as machine readable |
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| 51 | /// ascii to a file. When instantiating, the mode of file to be created |
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| 52 | /// must be specified. |
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| 53 | /// |
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| 54 | class IO_AsciiParticles : public IO_BaseClass { |
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| 55 | public: |
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| 56 | /// constructor requiring a file name and std::ios mode |
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| 57 | IO_AsciiParticles( const char* filename="IO_AsciiParticles.dat", |
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| 58 | std::ios::openmode mode=std::ios::out ); |
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| 59 | virtual ~IO_AsciiParticles(); |
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| 60 | |
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| 61 | /// write this event |
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| 62 | void write_event( const GenEvent* evt ); |
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| 63 | /// get the next event |
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| 64 | bool fill_next_event( GenEvent* evt ); |
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| 65 | /// insert a comment directly into the output file --- normally you |
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| 66 | /// only want to do this at the beginning or end of the file. All |
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| 67 | /// comments are preceded with "HepMC::IO_AsciiParticles-COMMENT\n" |
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| 68 | void write_comment( const std::string comment ); |
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| 69 | |
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| 70 | /// set output precision |
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| 71 | void setPrecision(int iprec); |
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| 72 | |
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| 73 | int rdstate() const; //!< check the state of the IO stream |
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| 74 | void clear(); //!< clear the IO stream |
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| 75 | |
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| 76 | /// write to ostr |
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| 77 | void print( std::ostream& ostr = std::cout ) const; |
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| 78 | |
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| 79 | protected: // for internal use only |
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| 80 | /// write end tag |
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| 81 | bool write_end_listing(); |
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| 82 | private: // use of copy constructor is not allowed |
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| 83 | IO_AsciiParticles( const IO_AsciiParticles& ) : IO_BaseClass() {} |
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| 84 | private: // data members |
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| 85 | int m_precision; |
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| 86 | std::ios::openmode m_mode; |
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| 87 | std::fstream* m_file; |
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| 88 | std::ostream* m_outstream; |
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| 89 | bool m_finished_first_event_io; |
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| 90 | }; |
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| 91 | |
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| 92 | ////////////// |
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| 93 | // Inlines // |
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| 94 | ////////////// |
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| 95 | |
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| 96 | inline int IO_AsciiParticles::rdstate() const { return (int)m_file->rdstate(); } |
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| 97 | inline void IO_AsciiParticles::clear() { m_file->clear(); } |
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| 98 | inline void IO_AsciiParticles::setPrecision(int iprec) { m_precision=iprec; } |
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| 99 | |
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| 100 | } // HepMC |
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| 101 | |
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| 102 | #endif // HEPMC_IO_ASCIIPARTICLES_H |
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| 103 | //-------------------------------------------------------------------------- |
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