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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