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0ca57c2f | 1 | //-------------------------------------------------------------------------- |
2 | #ifndef HEPMC_IO_ASCIIPARTICLES_H | |
3 | #define HEPMC_IO_ASCIIPARTICLES_H | |
4 | ||
5 | ////////////////////////////////////////////////////////////////////////// | |
6 | // Mikhail.Kirsanov@Cern.CH, 2006 | |
7 | // event input/output in ascii format for eye and machine reading | |
8 | ////////////////////////////////////////////////////////////////////////// | |
9 | // | |
10 | // Strategy for reading or writing events as machine readable | |
11 | // ascii to a file. When instantiating, the mode of file to be created | |
12 | // must be specified. Options are: | |
13 | // std::ios::in open file for input | |
14 | // std::ios::out open file for output | |
15 | // std::ios::trunc erase old file when opening (i.e. ios::out|ios::trunc | |
16 | // removes oldfile, and creates a new one for output ) | |
17 | // std::ios::app append output to end of file | |
18 | // for the purposes of this class, simultaneous input and output mode | |
19 | // ( std::ios::in | std::ios::out ) is not allowed. | |
20 | // | |
21 | // Event listings are preceded by the key: | |
22 | // "HepMC::IO_AsciiParticles-START_EVENT_LISTING\n" | |
23 | // and terminated by the key: | |
24 | // "HepMC::IO_AsciiParticles-END_EVENT_LISTING\n" | |
25 | // Comments are allowed. They need not be preceded by anything, though if | |
26 | // a comment is written using write_comment( const string ) then it will be | |
27 | // preceded by "HepMC::IO_AsciiParticles-COMMENT\n" | |
28 | // Each event, vertex, particle, particle data is preceded by | |
29 | // "E ","V ","P ","D " respectively. | |
30 | // Comments may appear anywhere in the file -- so long as they do not contain | |
31 | // any of the 4 start/stop keys. | |
32 | // | |
33 | ||
34 | #include <fstream> | |
35 | #include <string> | |
36 | #include <map> | |
37 | #include <vector> | |
38 | #include "HepMC/IO_BaseClass.h" | |
39 | ||
40 | namespace HepMC { | |
41 | ||
42 | class GenEvent; | |
43 | class GenVertex; | |
44 | class GenParticle; | |
45 | ||
46 | //! event input/output in ascii format for eye and machine reading | |
47 | ||
48 | /// | |
49 | /// \class IO_AsciiParticles | |
50 | /// Strategy for reading or writing events as machine readable | |
51 | /// ascii to a file. When instantiating, the mode of file to be created | |
52 | /// must be specified. | |
53 | /// | |
54 | class IO_AsciiParticles : public IO_BaseClass { | |
55 | public: | |
56 | /// constructor requiring a file name and std::ios mode | |
57 | IO_AsciiParticles( const char* filename="IO_AsciiParticles.dat", | |
58 | std::ios::openmode mode=std::ios::out ); | |
59 | virtual ~IO_AsciiParticles(); | |
60 | ||
61 | /// write this event | |
62 | void write_event( const GenEvent* evt ); | |
63 | /// get the next event | |
64 | bool fill_next_event( GenEvent* evt ); | |
65 | /// insert a comment directly into the output file --- normally you | |
66 | /// only want to do this at the beginning or end of the file. All | |
67 | /// comments are preceded with "HepMC::IO_AsciiParticles-COMMENT\n" | |
68 | void write_comment( const std::string comment ); | |
69 | ||
70 | /// set output precision | |
71 | void setPrecision(int iprec); | |
72 | ||
73 | int rdstate() const; //!< check the state of the IO stream | |
74 | void clear(); //!< clear the IO stream | |
75 | ||
76 | /// write to ostr | |
77 | void print( std::ostream& ostr = std::cout ) const; | |
78 | ||
79 | protected: // for internal use only | |
80 | /// write end tag | |
81 | bool write_end_listing(); | |
82 | private: // use of copy constructor is not allowed | |
83 | IO_AsciiParticles( const IO_AsciiParticles& ) : IO_BaseClass() {} | |
84 | private: // data members | |
85 | int m_precision; | |
86 | std::ios::openmode m_mode; | |
87 | std::fstream* m_file; | |
88 | std::ostream* m_outstream; | |
89 | bool m_finished_first_event_io; | |
90 | }; | |
91 | ||
92 | ////////////// | |
93 | // Inlines // | |
94 | ////////////// | |
95 | ||
96 | inline int IO_AsciiParticles::rdstate() const { return (int)m_file->rdstate(); } | |
97 | inline void IO_AsciiParticles::clear() { m_file->clear(); } | |
98 | inline void IO_AsciiParticles::setPrecision(int iprec) { m_precision=iprec; } | |
99 | ||
100 | } // HepMC | |
101 | ||
102 | #endif // HEPMC_IO_ASCIIPARTICLES_H | |
103 | //-------------------------------------------------------------------------- |