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40 garren 1 //--------------------------------------------------------------------------
2  
3 //////////////////////////////////////////////////////////////////////////
4 // garren@fnal.gov, July 2006
5 // event input/output in ascii format for machine reading
6 // extended format contains HeavyIon and PdfInfo classes
7 //////////////////////////////////////////////////////////////////////////
8  
9 #include "HepMC/IO_ExtendedAscii.h"
10 #include "HepMC/GenEvent.h"
11 #include "HepMC/ParticleDataTable.h"
12 #include "HepMC/HeavyIon.h"
13 #include "HepMC/PdfInfo.h"
14  
15 namespace HepMC {
16  
17     IO_ExtendedAscii::IO_ExtendedAscii( const char* filename, std::ios::openmode mode )
18         : m_mode(mode), m_file(filename, mode), m_finished_first_event_io(0)
19     {
20         if ( (m_mode&std::ios::out && m_mode&std::ios::in) ||
21              (m_mode&std::ios::app && m_mode&std::ios::in) ) {
22             std::cerr << "IO_ExtendedAscii::IO_ExtendedAscii Error, open of file requested "
23                       << "of input AND output type. Not allowed. Closing file."
24                       << std::endl;
25             m_file.close();
26         }
27         // precision 16 (# digits following decimal point) is the minimum that
28         //  will capture the full information stored in a double
29         m_file.precision(16);
30         // we use decimal to store integers, because it is smaller than hex!
31         m_file.setf(std::ios::dec,std::ios::basefield);
32         m_file.setf(std::ios::scientific,std::ios::floatfield);
33     }
34  
35     IO_ExtendedAscii::~IO_ExtendedAscii() {
36         write_end_listing();
37         m_file.close();
38     }
39  
40     void IO_ExtendedAscii::print( std::ostream& ostr ) const {
41         ostr << "IO_ExtendedAscii: unformated ascii file IO for machine reading.\n"
42              << "\tFile openmode: " << m_mode
43              << " file state: " << m_file.rdstate()
44              << " bad:" << (m_file.rdstate()&std::ios::badbit)
45              << " eof:" << (m_file.rdstate()&std::ios::eofbit)
46              << " fail:" << (m_file.rdstate()&std::ios::failbit)
47              << " good:" << (m_file.rdstate()&std::ios::goodbit) << std::endl;
48     }
49  
50     void IO_ExtendedAscii::write_event( const GenEvent* evt ) {
65 garren 51         /// Writes evt to m_file. It does NOT delete the event after writing.
40 garren 52         //
53         // check the state of m_file is good, and that it is in output mode
54         if ( !evt || !m_file ) return;
55         if ( !m_mode&std::ios::out ) {
56             std::cerr << "HepMC::IO_ExtendedAscii::write_event "
57                       << " attempt to write to input file." << std::endl;
58             return;
59         }
60         //
61         // write event listing key before first event only.
62         if ( !m_finished_first_event_io ) {
63             m_finished_first_event_io = 1;
64             m_file << "\n" << "HepMC::IO_ExtendedAscii-START_EVENT_LISTING\n";
65         }
66         //
67         // output the event data including the number of primary vertices
68         //  and the total number of vertices
69         std::vector<long int> random_states = evt->random_states();
70         m_file << 'E';
71         output( evt->event_number() );
103 garren 72         output( evt->mpi() );
40 garren 73         output( evt->event_scale() );
74         output( evt->alphaQCD() );
75         output( evt->alphaQED() );
76         output( evt->signal_process_id() );
77         output(   ( evt->signal_process_vertex() ?
78                     evt->signal_process_vertex()->barcode() : 0 )   );
79         output( evt->vertices_size() ); // total number of vertices.
80         output( (int)random_states.size() );
81         for ( std::vector<long int>::iterator rs = random_states.begin();
82               rs != random_states.end(); ++rs ) {
83             output( *rs );
84         }
85         output( (int)evt->weights().size() );
86         for ( WeightContainer::const_iterator w = evt->weights().begin();
87               w != evt->weights().end(); ++w ) {
88             output( *w );
89         }
90         output('\n');
91         write_heavy_ion( evt->heavy_ion() );
92         write_pdf_info( evt->pdf_info() );
93         //
94         // Output all of the vertices - note there is no real order.
95         for ( GenEvent::vertex_const_iterator v = evt->vertices_begin();
96               v != evt->vertices_end(); ++v ) {
97             write_vertex( *v );
98         }
99     }
100  
101     bool IO_ExtendedAscii::fill_next_event( GenEvent* evt ){
102         //
103         //
104         // test that evt pointer is not null
105         if ( !evt ) {
106             std::cerr
107                 << "IO_ExtendedAscii::fill_next_event error - passed null event."
108                 << std::endl;
109             return 0;
110         }
111         // check the state of m_file is good, and that it is in input mode
112         if ( !m_file ) return 0;
113         if ( !(m_mode&std::ios::in) ) {
114             std::cerr << "HepMC::IO_ExtendedAscii::fill_next_event "
115                       << " attempt to read from output file." << std::endl;
116             return 0;
117         }
118         //
119         // search for event listing key before first event only.
120         //
121         // skip through the file just after first occurence of the start_key
122         if ( !m_finished_first_event_io ) {
123             m_file.seekg( 0 ); // go to position zero in the file.
124             if (!search_for_key_end( m_file,
125                                      "HepMC::IO_ExtendedAscii-START_EVENT_LISTING\n")){
126                 std::cerr << "IO_ExtendedAscii::fill_next_event start key not found "
127                           << "setting badbit." << std::endl;
128                 m_file.clear(std::ios::badbit);
129                 return 0;
130             }
131             m_finished_first_event_io = 1;
132         }
133         //
134         // test to be sure the next entry is of type "E" then ignore it
135         if ( !m_file || m_file.peek()!='E' ) {
136             // if the E is not the next entry, then check to see if it is
137             // the end event listing key - if yes, search for another start key
138             if ( eat_key(m_file, "HepMC::IO_ExtendedAscii-END_EVENT_LISTING\n") ) {
139                 bool search_result = search_for_key_end(m_file,
140                                       "HepMC::IO_ExtendedAscii-START_EVENT_LISTING\n");
141                 if ( !search_result ) {
142                     // this is the only case where we set an EOF state
143                     m_file.clear(std::ios::eofbit);
144                     return 0;
145                 }
146             } else {
147                 std::cerr << "IO_ExtendedAscii::fill_next_event end key not found "
148                           << "setting badbit." << std::endl;
149                 m_file.clear(std::ios::badbit);
150                 return 0;
151             }
152         }
153         m_file.ignore();
154         // read values into temp variables, then create a new GenEvent
155         int event_number = 0, signal_process_id = 0, signal_process_vertex = 0,
103 garren 156             num_vertices = 0, random_states_size = 0, weights_size = 0,
157             nmpi = 0;
40 garren 158         double eventScale = 0, alpha_qcd = 0, alpha_qed = 0;
103 garren 159         m_file >> event_number >> nmpi >> eventScale >> alpha_qcd >> alpha_qed
40 garren 160                >> signal_process_id >> signal_process_vertex
161                >> num_vertices >> random_states_size;
162         std::vector<long int> random_states(random_states_size);
163         for ( int i = 0; i < random_states_size; ++i ) {
164             m_file >> random_states[i];
165         }
166         m_file >> weights_size;
167         WeightContainer weights(weights_size);
168         for ( int ii = 0; ii < weights_size; ++ii ) m_file >> weights[ii];
169         m_file.ignore(2,'\n');
170         //
171         // fill signal_process_id, event_number, weights, random_states
172         evt->set_signal_process_id( signal_process_id );
173         evt->set_event_number( event_number );
103 garren 174         evt->set_mpi( nmpi );
40 garren 175         evt->weights() = weights;
176         evt->set_random_states( random_states );
177         // get HeavyIon and PdfInfo
106 garren 178         HeavyIon* ion = read_heavy_ion();
179         if(ion) evt->set_heavy_ion( *ion );
180         PdfInfo* pdf = read_pdf_info();
181         if(pdf) evt->set_pdf_info( *pdf );
40 garren 182         //
183         // the end vertices of the particles are not connected until
184         //  after the event is read --- we store the values in a map until then
185         std::map<GenParticle*,int> particle_to_end_vertex;
186         //
187         // read in the vertices
188         for ( int iii = 1; iii <= num_vertices; ++iii ) {
189             GenVertex* v = read_vertex(particle_to_end_vertex);
190             evt->add_vertex( v );
191         }
192         // set the signal process vertex
193         if ( signal_process_vertex ) {
194             evt->set_signal_process_vertex(
195                 evt->barcode_to_vertex(signal_process_vertex) );
196         }
197         //
198         // last connect particles to their end vertices
199         for ( std::map<GenParticle*,int>::iterator pmap
200                   = particle_to_end_vertex.begin();
201               pmap != particle_to_end_vertex.end(); ++pmap ) {
202             GenVertex* itsDecayVtx = evt->barcode_to_vertex(pmap->second);
203             if ( itsDecayVtx ) itsDecayVtx->add_particle_in( pmap->first );
204             else {
205                 std::cerr << "IO_ExtendedAscii::fill_next_event ERROR particle points"
206                           << "\n to null end vertex. " <<std::endl;
207             }
208         }
209         return 1;
210     }
211  
212     void IO_ExtendedAscii::write_comment( const std::string comment ) {
213         // check the state of m_file is good, and that it is in output mode
214         if ( !m_file ) return;
215         if ( !m_mode&std::ios::out ) {
216             std::cerr << "HepMC::IO_ExtendedAscii::write_comment "
217                       << " attempt to write to input file." << std::endl;
218             return;
219         }
220         // write end of event listing key if events have already been written
221         write_end_listing();
222         // insert the comment key before the comment
223         m_file << "\n" << "HepMC::IO_ExtendedAscii-COMMENT\n";
224         m_file << comment << std::endl;
225     }
226  
227     void IO_ExtendedAscii::write_particle_data_table( const ParticleDataTable* pdt) {
228         //
229         // check the state of m_file is good, and that it is in output mode
230         if ( !m_file ) return;
231         if ( !m_mode&std::ios::out ) {
232             std::cerr << "HepMC::IO_ExtendedAscii::write_particle_data_table "
233                       << " attempt to write to input file." << std::endl;
234             return;
235         }
236         // write end of event listing key if events have already been written
237         write_end_listing();
238         //
239         m_file << "\n" << "HepMC::IO_ExtendedAscii-START_PARTICLE_DATA\n";
240         for ( ParticleDataTable::const_iterator pd = pdt->begin();
241               pd != pdt->end(); pd++ ) {
242             write_particle_data( pd->second );
243         }
244         m_file << "HepMC::IO_ExtendedAscii-END_PARTICLE_DATA\n" << std::flush;
245     }
246  
247     bool IO_ExtendedAscii::fill_particle_data_table( ParticleDataTable* pdt ) {
248         //
249         // test that pdt pointer is not null
250         if ( !pdt ) {
251             std::cerr
252                 << "IO_ExtendedAscii::fill_particle_data_table - passed null table."
253                 << std::endl;
254             return 0;
255         }
256         //
257         // check the state of m_file is good, and that it is in input mode
258         if ( !m_file ) return 0;
259         if ( !m_mode&std::ios::in ) {
260             std::cerr << "HepMC::IO_ExtendedAscii::fill_particle_data_table "
261                       << " attempt to read from output file." << std::endl;
262             return 0;
263         }
264         // position to beginning of file
265         int initial_file_position = m_file.tellg();
266         std::ios::iostate initial_state = m_file.rdstate();
267         m_file.seekg( 0 );
268         // skip through the file just after first occurence of the start_key
269         if (!search_for_key_end( m_file,
270                                  "HepMC::IO_ExtendedAscii-START_PARTICLE_DATA\n")) {
271             m_file.seekg( initial_file_position );
272             std::cerr << "IO_ExtendedAscii::fill_particle_data_table start key not  "
273                       << "found setting badbit." << std::endl;
274             m_file.clear(std::ios::badbit);
275             return 0;
276         }
277         //
278         pdt->set_description("Read with IO_ExtendedAscii");
279         //
280         // read Individual GenParticle data entries
281         while ( read_particle_data( pdt ) );
282         //
283         // eat end_key
284         if ( !eat_key(m_file,"HepMC::IO_ExtendedAscii-END_PARTICLE_DATA\n") ){
285             std::cerr << "IO_ExtendedAscii::fill_particle_data_table end key not  "
286                       << "found setting badbit." << std::endl;
287             m_file.clear(std::ios::badbit);
288         }
289         // put the file back into its original state and position
290         m_file.clear( initial_state );
291         m_file.seekg( initial_file_position );
292         return 1;
293     }
294  
295     void IO_ExtendedAscii::write_vertex( GenVertex* v ) {
296         // assumes mode has already been checked
297         if ( !v || !m_file ) {
298             std::cerr << "IO_ExtendedAscii::write_vertex !v||!m_file, "
299                       << "v="<< v << " setting badbit" << std::endl;
300             m_file.clear(std::ios::badbit);
301             return;
302         }
303         // First collect info we need
304         // count the number of orphan particles going into v
305         int num_orphans_in = 0;
306         for ( GenVertex::particles_in_const_iterator p1
307                   = v->particles_in_const_begin();
308               p1 != v->particles_in_const_end(); ++p1 ) {
309             if ( !(*p1)->production_vertex() ) ++num_orphans_in;
310         }
311         //
312         m_file << 'V';
313         output( v->barcode() ); // v's unique identifier
314         output( v->id() );
315         output( v->position().x() );
316         output( v->position().y() );
317         output( v->position().z() );
318         output( v->position().t() );
319         output( num_orphans_in );
320         output( (int)v->particles_out_size() );
321         output( (int)v->weights().size() );
322         for ( WeightContainer::iterator w = v->weights().begin();
323               w != v->weights().end(); ++w ) {
324             output( *w );
325         }
326         output('\n');
327         for ( GenVertex::particles_in_const_iterator p2
328                   = v->particles_in_const_begin();
329               p2 != v->particles_in_const_end(); ++p2 ) {
330             if ( !(*p2)->production_vertex() ) {
331                 write_particle( *p2 );
332             }
333         }
334         for ( GenVertex::particles_out_const_iterator p3
335                   = v->particles_out_const_begin();
336               p3 != v->particles_out_const_end(); ++p3 ) {
337             write_particle( *p3 );
338         }
339     }
340  
341     void IO_ExtendedAscii::write_heavy_ion( HeavyIon* ion ) {
342         // assumes mode has already been checked
343         if ( !m_file ) {
344             std::cerr << "IO_ExtendedAscii::write_heavy_ion !m_file, "
345                       << " setting badbit" << std::endl;
346             m_file.clear(std::ios::badbit);
347             return;
348         }
106 garren 349         m_file << 'H';
40 garren 350         // HeavyIon* is set to 0 by default
351         if ( !ion  ) {
106 garren 352             output( 0 );
353             output( 0 );
354             output( 0 );
355             output( 0 );
356             output( 0 );
357             output( 0 );
358             output( 0 );
359             output( 0 );
360             output( 0 );
361             output( 0. );
362             output( 0. );
363             output( 0. );
364             output( 0. );
365             output('\n');
40 garren 366             return;
367         }
368         //
369         output( ion->Ncoll_hard() );
370         output( ion->Npart_proj() );
371         output( ion->Npart_targ() );
372         output( ion->Ncoll() );
373         output( ion->spectator_neutrons() );
374         output( ion->spectator_protons() );
375         output( ion->N_Nwounded_collisions() );
376         output( ion->Nwounded_N_collisions() );
377         output( ion->Nwounded_Nwounded_collisions() );
378         output( ion->impact_parameter() );
379         output( ion->event_plane_angle() );
380         output( ion->eccentricity() );
381         output( ion->sigma_inel_NN() );
382         output('\n');
383     }
384  
385     void IO_ExtendedAscii::write_pdf_info( PdfInfo* pdf ) {
386         // assumes mode has already been checked
387         if ( !m_file ) {
388             std::cerr << "IO_ExtendedAscii::write_pdf_info !m_file, "
389                       << " setting badbit" << std::endl;
390             m_file.clear(std::ios::badbit);
391             return;
392         }
106 garren 393         m_file << 'F';
40 garren 394         // PdfInfo* is set to 0 by default
395         if ( !pdf ) {
106 garren 396             output( 0 );
397             output( 0 );
398             output( 0. );
399             output( 0. );
400             output( 0. );
401             output( 0. );
402             output( 0. );
403             output('\n');
40 garren 404             return;
405         }
406         //
407         output( pdf->id1() );
408         output( pdf->id2() );
409         output( pdf->x1() );
410         output( pdf->x2() );
411         output( pdf->scalePDF() );
412         output( pdf->pdf1() );
413         output( pdf->pdf2() );
414         output('\n');
415     }
416  
417     void IO_ExtendedAscii::write_particle( GenParticle* p ) {
418         // assumes mode has already been checked
419         if ( !p || !m_file ) {
420             std::cerr << "IO_ExtendedAscii::write_particle !p||!m_file, "
421                       << "v="<< p << " setting badbit" << std::endl;
422             m_file.clear(std::ios::badbit);
423             return;
424         }
425         m_file << 'P';
426         output( p->barcode() );
427         output( p->pdg_id() );
428         output( p->momentum().px() );
429         output( p->momentum().py() );
430         output( p->momentum().pz() );
431         output( p->momentum().e() );
48 garren 432         output( p->generated_mass() );
40 garren 433         output( p->status() );
434         output( p->polarization().theta() );
435         output( p->polarization().phi() );
436         // since end_vertex is oftentimes null, this CREATES a null vertex
437         // in the map
438         output(   ( p->end_vertex() ? p->end_vertex()->barcode() : 0 )  );
439         m_file << ' ' << p->flow() << "\n";
440     }
441  
442     void IO_ExtendedAscii::write_particle_data( const ParticleData* pdata ) {
443         // assumes mode has already been checked
444         if ( !pdata || !m_file ) {
445             std::cerr << "IO_ExtendedAscii::write_particle_data !pdata||!m_file, "
446                       << "pdata="<< pdata << " setting badbit" << std::endl;
447             m_file.clear(std::ios::badbit);
448             return;
449         }
450         m_file << 'D';
451         output( pdata->pdg_id() );
452         output( pdata->charge() );
453         output( pdata->mass() );
454         output( pdata->clifetime() );
455         output( (int)(pdata->spin()*2.+.1) );
456         // writes the first 21 characters starting with 0
457         m_file << " " << pdata->name().substr(0,21) << "\n";
458     }
459  
460     GenVertex* IO_ExtendedAscii::read_vertex
461     ( std::map<GenParticle*,int>& particle_to_end_vertex )
462     {
463         // assumes mode has already been checked
464         //
465         // test to be sure the next entry is of type "V" then ignore it
466         if ( !m_file || m_file.peek()!='V' ) {
467             std::cerr << "IO_ExtendedAscii::read_vertex setting badbit." << std::endl;
468             m_file.clear(std::ios::badbit);
469             return 0;
470         }
471         m_file.ignore();
472         // read values into temp variables, then create a new GenVertex object
473         int identifier =0, id =0, num_orphans_in =0,
474             num_particles_out = 0, weights_size = 0;
475         double x = 0., y = 0., z = 0., t = 0.;
476         m_file >> identifier >> id >> x >> y >> z >> t
477                >> num_orphans_in >> num_particles_out >> weights_size;
478         WeightContainer weights(weights_size);
479         for ( int i1 = 0; i1 < weights_size; ++i1 ) m_file >> weights[i1];
480         m_file.ignore(2,'\n');
43 garren 481         GenVertex* v = new GenVertex( FourVector(x,y,z,t),
40 garren 482                                 id, weights);
483         v->suggest_barcode( identifier );
484         //
485         // read and create the associated particles. outgoing particles are
486         //  added to their production vertices immediately, while incoming
487         //  particles are added to a map and handles later.
488         for ( int i2 = 1; i2 <= num_orphans_in; ++i2 ) {
489             read_particle(particle_to_end_vertex);
490         }
491         for ( int i3 = 1; i3 <= num_particles_out; ++i3 ) {
492             v->add_particle_out( read_particle(particle_to_end_vertex) );
493         }
494         return v;
495     }
496  
497     HeavyIon* IO_ExtendedAscii::read_heavy_ion()
498     {
499         // assumes mode has already been checked
500         //
501         // test to be sure the next entry is of type "H" then ignore it
502         if ( !m_file || m_file.peek()!='H' ) {
503             std::cerr << "IO_ExtendedAscii::read_heavy_ion setting badbit." << std::endl;
504             m_file.clear(std::ios::badbit);
505             return 0;
506         }
507         m_file.ignore();
508         // read values into temp variables, then create a new HeavyIon object
509         int nh =0, np =0, nt =0, nc =0,
510             neut = 0, prot = 0, nw =0, nwn =0, nwnw =0;
511         float impact = 0., plane = 0., xcen = 0., inel = 0.;
512         m_file >> nh >> np >> nt >> nc >> neut >> prot
513                >> nw >> nwn >> nwnw >> impact >> plane >> xcen >> inel;
514         m_file.ignore(2,'\n');
106 garren 515         if( nh == 0 ) return 0;
40 garren 516         HeavyIon* ion = new HeavyIon(nh, np, nt, nc, neut, prot,
517                                      nw, nwn, nwnw,
518                                      impact, plane, xcen, inel );
519         //
520         return ion;
521     }
522  
523     PdfInfo* IO_ExtendedAscii::read_pdf_info()
524     {
525         // assumes mode has already been checked
526         //
527         // test to be sure the next entry is of type "F" then ignore it
106 garren 528         if ( !m_file || m_file.peek() !='F') {
40 garren 529             std::cerr << "IO_ExtendedAscii::read_pdf_info setting badbit." << std::endl;
530             m_file.clear(std::ios::badbit);
531             return 0;
532         }
533         m_file.ignore();
534         // read values into temp variables, then create a new PdfInfo object
535         int id1 =0, id2 =0;
536         double  x1 = 0., x2 = 0., scale = 0., pdf1 = 0., pdf2 = 0.;
537         m_file >> id1 >> id2 >> x1 >> x2 >> scale >> pdf1 >> pdf2;
538         m_file.ignore(2,'\n');
106 garren 539         //std::cout << "read " << id1 << std::endl;
540         if( id1 == 0 ) return 0;
40 garren 541         PdfInfo* pdf = new PdfInfo( id1, id2, x1, x2, scale, pdf1, pdf2);
542         //
543         return pdf;
544     }
545  
546     GenParticle* IO_ExtendedAscii::read_particle(
547         std::map<GenParticle*,int>& particle_to_end_vertex ){
548         // assumes mode has already been checked
549         //
550         // test to be sure the next entry is of type "P" then ignore it
551         if ( !m_file || m_file.peek()!='P' ) {
552             std::cerr << "IO_ExtendedAscii::read_particle setting badbit."
553                       << std::endl;
554             m_file.clear(std::ios::badbit);
555             return 0;
556         }
557         m_file.ignore();
558         //
559         // declare variables to be read in to, and read everything except flow
48 garren 560         double px = 0., py = 0., pz = 0., e = 0., m = 0., theta = 0., phi = 0.;
40 garren 561         int bar_code = 0, id = 0, status = 0, end_vtx_code = 0, flow_size = 0;
48 garren 562         m_file >> bar_code >> id >> px >> py >> pz >> e >> m >> status
40 garren 563                >> theta >> phi >> end_vtx_code >> flow_size;
564         //
565         // read flow patterns if any exist
566         Flow flow;
567         int code_index, code;
568         for ( int i = 1; i <= flow_size; ++i ) {
569             m_file >> code_index >> code;
570             flow.set_icode( code_index,code);
571         }
572         m_file.ignore(2,'\n'); // '\n' at end of entry
43 garren 573         GenParticle* p = new GenParticle( FourVector(px,py,pz,e),
40 garren 574                                     id, status, flow,
575                                     Polarization(theta,phi) );
48 garren 576         p->set_generated_mass( m );
40 garren 577         p->suggest_barcode( bar_code );
578         //
579         // all particles are connected to their end vertex separately
580         // after all particles and vertices have been created - so we keep
581         // a map of all particles that have end vertices
582         if ( end_vtx_code != 0 ) particle_to_end_vertex[p] = end_vtx_code;
583         return p;
584     }
585  
586     ParticleData* IO_ExtendedAscii::read_particle_data( ParticleDataTable* pdt ) {
587         // assumes mode has already been checked
588         //
589         // test to be sure the next entry is of type "D" then ignore it
590         if ( !m_file || m_file.peek()!='D' ) return 0;
591         m_file.ignore();
592         //
593         // read values into temp variables then create new ParticleData object
594         char its_name[22];
595         int its_id = 0, its_spin = 0;  
596         double its_charge = 0, its_mass = 0, its_clifetime = 0;
597         m_file >> its_id >> its_charge >> its_mass
598                >> its_clifetime >> its_spin;
599         m_file.ignore(1); // eat the " "
600         m_file.getline( its_name, 22, '\n' );
601         ParticleData* pdata = new ParticleData( its_name, its_id, its_charge,
602                                                 its_mass, its_clifetime,
603                                                 double(its_spin)/2.);
604         pdt->insert(pdata);
605         return pdata;
606     }
607  
608     bool IO_ExtendedAscii::write_end_listing() {
609         if ( m_finished_first_event_io && m_mode&std::ios::out ) {
610             m_file << "HepMC::IO_ExtendedAscii-END_EVENT_LISTING\n" << std::flush;
611             m_finished_first_event_io = 0;
612             return 1;
613         }
614         return 0;
615     }
616  
617     bool IO_ExtendedAscii::search_for_key_end( std::istream& in, const char* key ) {
65 garren 618         /// reads characters from in until the string of characters matching
619         /// key is found (success) or EOF is reached (failure).
620         /// It stops immediately thereafter. Returns T/F for success/fail
40 garren 621         //
622         char c[1];
623         unsigned int index = 0;
624         while ( in.get(c[0]) ) {
625             if ( c[0] == key[index] ) {
626                 ++index;
627             } else { index = 0; }
628             if ( index == strlen(key) ) return 1;
629         }
630         return 0;
631     }
632  
633     bool IO_ExtendedAscii::search_for_key_beginning( std::istream& in,
634                                              const char* key ) {
65 garren 635         /// not tested and NOT used anywhere!
40 garren 636         if ( search_for_key_end( in, key) ) {
637             int i = strlen(key);
638             while ( i>=0 ) in.putback(key[i--]);
639             return 1;
640         } else {
641             in.putback(EOF);
642             in.clear();
643             return 0;
644         }
645     }
646  
647     bool IO_ExtendedAscii::eat_key( std::iostream& in, const char* key ) {
65 garren 648         /// eats the character string key from istream in - only if the key
649         /// is the very next occurence in the stream
650         /// if the key is not the next occurence, it eats nothing ... i.e.
651         ///  it puts back whatever it would have eaten.
40 garren 652         int key_length = strlen(key);
653         // below is the only way I know of to get a variable length string
654         //  conforming to ansi standard.
655         char* c = new char[key_length +1];
656         int i=0;
657         // read the stream until get fails (because of EOF), a character
658         //  doesn't match a character in the string, or all characters in
659         //  the string have been checked and match.
660         while ( in.get(c[i]) && c[i]==key[i] && i<key_length ) {
661             ++i;
662         }
663         if ( i == key_length ) {
87 garren 664             delete [] c;
40 garren 665             return 1;
666         }
667         //
668         // if we get here, then we have eaten the wrong this and we must put it
669         // back
670         while ( i>=0 ) in.putback(c[i--]);
671         delete c;
672         return 0;
673     }
674  
675     int IO_ExtendedAscii::find_in_map( const std::map<GenVertex*,int>& m,
676                                GenVertex* v ) const {
677         std::map<GenVertex*,int>::const_iterator iter = m.find(v);
678         if ( iter == m.end() ) return 0;
679         return iter->second;
680     }
681  
682 } // HepMC