[349] | 1 | //--------------------------------------------------------------------------
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| 2 |
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| 3 | //////////////////////////////////////////////////////////////////////////
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| 4 | // Matt.Dobbs@Cern.CH, January 2000
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| 5 | // Reads a particle data table from file supplied in PDG format
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| 6 | // For the most recent table see: http://pdg.lbl.gov/computer_read.html
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| 7 | //////////////////////////////////////////////////////////////////////////
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| 8 |
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| 9 | #include <ctype.h> // for isspace() etc.
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| 10 | #include <string>
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| 11 | #include <vector>
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| 12 | #include <cstdlib> // needed for abort()
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| 13 | #include <cstring> // for strlen()
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| 14 | #include "IO_PDG_ParticleDataTable.h"
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| 15 |
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| 16 | namespace HepMC {
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| 17 |
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| 18 | IO_PDG_ParticleDataTable::IO_PDG_ParticleDataTable( const char* filename )
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| 19 | : m_filename(filename), m_file(filename) {
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| 20 | std::cout << "-------------------------------------------------------" << std::endl;
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| 21 | std::cout << "Use of HepMC/IO_PDG_ParticleDataTable is deprecated" << std::endl;
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| 22 | std::cout << "Use of HepMC/ParticleDataTable is deprecated" << std::endl;
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| 23 | std::cout << "-------------------------------------------------------" << std::endl;
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| 24 | }
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| 25 |
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| 26 | IO_PDG_ParticleDataTable::~IO_PDG_ParticleDataTable() {
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| 27 | m_file.close();
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| 28 | }
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| 29 |
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| 30 | bool IO_PDG_ParticleDataTable::fill_particle_data_table(
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| 31 | ParticleDataTable* pdt)
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| 32 | {
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| 33 | //
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| 34 | // test that pdt pointer is not null
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| 35 | if ( !pdt ) {
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| 36 | std::cerr
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| 37 | << "IO_Ascii::fill_particle_data_table - passed null table."
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| 38 | << std::endl;
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| 39 | return false;
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| 40 | }
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| 41 | //
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| 42 | // test the file is good and advance to keyword
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| 43 | if (!m_file ) {
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| 44 | // return false;
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| 45 | std::cerr << "IO_PDG_ParticleDataTable::fill_particle_data_table "
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| 46 | << " ERROR, file " << m_filename << " does not exist, "
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| 47 | << " ABORT." << std::endl;
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| 48 | abort();
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| 49 | }
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| 50 | m_file.seekg( 0 );
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| 51 | if ( !search_for_key_end(m_file,"\nM") ) {
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| 52 | std::cerr << "IO_PDG_ParticleDataTable: "
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| 53 | << "Error advancing to first entry."
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| 54 | << std::endl;
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| 55 | return false;
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| 56 | }
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| 57 | // set description
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| 58 | std::string description = "Read from " + m_filename
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| 59 | + " by IO_PDG_ParticleDataTable";
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| 60 | pdt->set_description( description );
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| 61 | m_file.putback('M');
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| 62 | // read in each entry one by one
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| 63 | while ( m_file.rdstate() == 0 ) {
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| 64 | read_entry( pdt );
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| 65 | }
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| 66 | return true;
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| 67 | }
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| 68 |
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| 69 | void IO_PDG_ParticleDataTable::read_entry( ParticleDataTable* pdt ) {
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| 70 | int position = m_file.tellg();
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| 71 | // variables for input
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| 72 | char code;
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| 73 | int id[4] = { 0,0,0,0 };
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| 74 | int charge[4] = { 999, 999, 999, 999 };
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| 75 | double value;
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| 76 | std::string name;
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| 77 |
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| 78 | code = m_file.get();
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| 79 | if ( code == EOF ) {
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| 80 | m_file.clear( std::ios::eofbit );
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| 81 | return;
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| 82 | }
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| 83 |
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| 84 | if ( code == '\n' ) return; // ignore empty lines.
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| 85 |
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| 86 | if ( code!='M' && code!='W' ) {
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| 87 | std::cerr << "IO_PDG_ParticleDataTable::read_entry cannot "
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| 88 | << "understand syntax, setting badbit."
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| 89 | << std::endl;
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| 90 | m_file.putback( code );
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| 91 | m_file.clear( std::ios::badbit );
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| 92 | return;
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| 93 | }
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| 94 | // read the particle ID's -- here I assume there is atleast one
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| 95 | // white space b/t the 4 id columns.
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| 96 | for ( int id_i1 = 0; id_i1 < 4; ++id_i1 ) {
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| 97 | m_file.seekg( position+1+(id_i1*8) );
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| 98 | for ( int i = 0; i < 8; ++i ) {
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| 99 | if ( !isspace(m_file.peek()) ) {
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| 100 | //m_file.width(8-i); // has no effect
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| 101 | // how do I limit to reading only 8-i characters?
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| 102 | // setw(8-i) has no effect either.
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| 103 | m_file >> id[id_i1];
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| 104 | break;
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| 105 | }
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| 106 | m_file.ignore();
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| 107 | }
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| 108 | }
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| 109 | //m_file.width(0);
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| 110 | m_file.seekg(position+33);
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| 111 | m_file >> value;
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| 112 | m_file.seekg(position+66);
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| 113 | m_file >> name;
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| 114 | // loop over all remaining columns of the name section, where the
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| 115 | // charge is stored --- until \n is reached
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| 116 | // Here I assume there is atleast one white space between the name
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| 117 | // and the charge. This is true for the 1998 PDG table, and I expect
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| 118 | // it will always be true.
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| 119 | int id_i2 = 0;
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| 120 | while ( m_file.rdstate() == 0 ) {
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| 121 | char c = m_file.get();
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| 122 | if ( c == '\n' || c == EOF ) break;
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| 123 | if ( isspace(c) || c==',' ) {
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| 124 | } else if ( c=='-' ) {
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| 125 | charge[id_i2] = -1;
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| 126 | ++id_i2;
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| 127 | } else if ( c=='0' ) {
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| 128 | charge[id_i2] = 0;
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| 129 | ++id_i2;
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| 130 | } else if ( c=='+' ) {
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| 131 | charge[id_i2] = 1;
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| 132 | if ( m_file.peek() == '+' ) {
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| 133 | charge[id_i2] = 2;
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| 134 | m_file.ignore();
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| 135 | }
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| 136 | ++id_i2;
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| 137 | }
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| 138 | }
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| 139 | // add the new information to the particle data table.
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| 140 | for ( int id_i3 = 0; id_i3 < 4; ++id_i3 ) {
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| 141 | if ( id[id_i3] == 0 ) continue;
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| 142 | std::string scharge;
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| 143 | if ( charge[id_i3] == -1 ) {
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| 144 | scharge = "-";
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| 145 | } else if ( charge[id_i3] == 1 ) {
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| 146 | scharge = "+";
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| 147 | } else if ( charge[id_i3] == 2 ) {
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| 148 | scharge = "++";
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| 149 | }
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| 150 | ParticleData* pdata = pdt->find( id[id_i3] );
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| 151 | if ( pdata ) {
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| 152 | if ( code == 'M' ) {
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| 153 | pdata->set_mass( value );
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| 154 | } else if ( code == 'W' ) {
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| 155 | pdata->set_clifetime( clifetime_from_width(value) );
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| 156 | }
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| 157 | } else if ( code == 'M' ) {
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| 158 | pdata = new ParticleData( name+scharge,
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| 159 | id[id_i3], (double)charge[id_i3],
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| 160 | value );
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| 161 | pdt->insert(pdata);
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| 162 | } else if ( code == 'W' ) {
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| 163 | pdata = new ParticleData( name+scharge,
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| 164 | id[id_i3], (double)charge[id_i3],
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| 165 | 0, clifetime_from_width(value) );
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| 166 | pdt->insert(pdata);
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| 167 | }
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| 168 | }
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| 169 | }
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| 170 |
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| 171 | void IO_PDG_ParticleDataTable::add_quarks_to_table(
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| 172 | ParticleDataTable& pdt ) {
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| 173 | /// since quarks aren't included in PDG table, this method adds them
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| 174 | // in
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| 175 | std::vector<std::string> name(6);
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| 176 | name[0] = "d";
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| 177 | name[1] = "u";
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| 178 | name[2] = "s";
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| 179 | name[3] = "c";
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| 180 | name[4] = "b";
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| 181 | name[5] = "t";
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| 182 | int id[6] = { 1, 2, 3, 4, 5, 6 };
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| 183 | double charge[6] = { -1./3., 2./3., -1./3., 2./3., -1./3., 2./3. };
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| 184 | // take central values from PDG July 1998 for masses
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| 185 | double mass[6] = { 0.006, 0.00325, 0.115, 1.25, 4.25, 173.8 };
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| 186 | for ( int i = 0; i<6; ++i ) {
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| 187 | // build the particle
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| 188 | ParticleData* pdata = pdt.find(id[i]);
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| 189 | if ( pdata ) {
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| 190 | mass[i] = pdata->mass();
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| 191 | pdt.erase(pdata);
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| 192 | delete pdata;
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| 193 | }
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| 194 | pdata = new ParticleData( name[i], id[i], charge[i], mass[i], -1.,
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| 195 | .5 );
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| 196 | pdt.insert(pdata);
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| 197 | // build the antiparticle
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| 198 | pdata = pdt.find(-1*id[i]);
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| 199 | if ( pdata ) {
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| 200 | pdt.erase(pdata);
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| 201 | delete pdata;
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| 202 | }
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| 203 | pdata = new ParticleData( name[i]+"~", -1*id[i], -1*charge[i],
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| 204 | mass[i], -1., .5 );
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| 205 | pdt.insert(pdata);
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| 206 | }
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| 207 | }
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| 208 |
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| 209 | bool IO_PDG_ParticleDataTable::search_for_key_end( std::istream& in,
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| 210 | const char* key ) {
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| 211 | /// (this method borrowed from IO_Ascii class)
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| 212 | /// reads characters from in until the string of characters matching
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| 213 | /// key is found (success) or EOF is reached (failure).
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| 214 | /// It stops immediately thereafter. Returns T/F for success/fail
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| 215 | //
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| 216 | char c[1];
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| 217 | unsigned int index = 0;
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| 218 | while ( in.get(c[0]) ) {
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| 219 | if ( c[0] == key[index] ) {
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| 220 | ++index;
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| 221 | } else { index = 0; }
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| 222 | if ( index == strlen(key) ) return true;
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| 223 | }
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| 224 | return false;
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| 225 | }
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| 226 |
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| 227 | } // HepMC
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| 228 |
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| 229 |
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| 230 |
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| 231 |
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| 232 |
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| 233 |
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| 234 |
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| 235 |
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| 236 |
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