6 #ifndef HEPMC3_READERFACTORY_H
7 #define HEPMC3_READERFACTORY_H
9 #include "HepMC3/ReaderAscii.h"
10 #include "HepMC3/ReaderAsciiHepMC2.h"
11 #include "HepMC3/ReaderHEPEVT.h"
12 #include "HepMC3/ReaderLHEF.h"
13 #include "HepMC3/ReaderPlugin.h"
35 std::string libHepMC3rootIO=
"libHepMC3rootIO.so.3";
36 #if defined(__darwin__) || defined(__APPLE__)
37 libHepMC3rootIO=
"libHepMC3rootIO.dydl";
39 #if (defined(WIN32) || defined(_WIN32) || defined(__WIN32)) && !defined(__CYGWIN__)
40 libHepMC3rootIO=
"HepMC3rootIO.dll";
44 if (filename.find(
"http://")!=std::string::npos) remote=
true;
45 if (filename.find(
"https://")!=std::string::npos) remote=
true;
46 if (filename.find(
"root://")!=std::string::npos) remote=
true;
47 if (filename.find(
"gsidcap://")!=std::string::npos) remote=
true;
49 std::vector<std::string> head;
53 #if (defined(WIN32) || defined(_WIN32) || defined(__WIN32)) && !defined(__CYGWIN__)
54 if (!(stat (filename.c_str(), &
buffer)==0))
56 if (!(stat (filename.c_str(), &
buffer)==0 && (S_ISFIFO(buffer.st_mode)|| S_ISREG(buffer.st_mode) || S_ISLNK(buffer.st_mode))))
59 HEPMC3_ERROR(
"deduce_reader: file " << filename <<
" does not exist or is not a regular file/FIFO/link");
60 return std::shared_ptr<Reader> (
nullptr);
63 std::ifstream*
file=
new std::ifstream(filename);
66 HEPMC3_ERROR(
"deduce_reader could not open file for testing HepMC version: " << filename);
67 return std::shared_ptr<Reader>(
nullptr);
69 if (!file->is_open()) {
70 HEPMC3_ERROR(
"deduce_reader could not open file for testing HepMC version: " << filename);
72 return std::shared_ptr<Reader>(
nullptr);
75 #if defined(__linux__) || defined(__darwin__)|| defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun)
76 pipe = S_ISFIFO(buffer.st_mode);
78 HEPMC3_DEBUG(0,
"deduce_reader: the file " << filename <<
" is a pipe");
86 if (line.empty())
continue;
96 HEPMC3_DEBUG(0,
"deduce_reader: Attempt ReaderRootTree for " << filename);
97 if ( strncmp(head.at(0).c_str(),
"root",4) == 0||remote)
98 return std::make_shared<ReaderPlugin>(
filename,libHepMC3rootIO,std::string(
"newReaderRootTreefile"));
101 HEPMC3_DEBUG(0,
"Attempt ReaderAscii for " << filename);
102 if ( strncmp(head.at(0).c_str(),
"HepMC::Version",14) == 0 && strncmp(head.at(1).c_str(),
"HepMC::Asciiv3",14)==0 )
103 return std::shared_ptr<Reader>((Reader*) (
new ReaderAscii(filename)));
104 HEPMC3_DEBUG(0,
"Attempt ReaderAsciiHepMC2 for " << filename);
105 if ( strncmp(head.at(0).c_str(),
"HepMC::Version",14) == 0 && strncmp(head.at(1).c_str(),
"HepMC::IO_GenEvent",18)==0 )
106 return std::shared_ptr<Reader>((Reader*) (
new ReaderAsciiHepMC2(filename)));
107 HEPMC3_DEBUG(0,
"Attempt ReaderLHEF for " << filename);
108 if ( strncmp(head.at(0).c_str(),
"<LesHouchesEvents",17) == 0)
109 return std::shared_ptr<Reader>((Reader*) (
new ReaderLHEF(filename)));
110 HEPMC3_DEBUG(0,
"Attempt ReaderHEPEVT for " << filename);
111 std::stringstream st_e(head.at(0).c_str());
121 if (attr==
' ')
continue;
126 HEPEVT=
static_cast<bool>(st_e>>m_i>>m_p);
129 if (HEPEVT)
return std::shared_ptr<Reader>((Reader*) (
new ReaderHEPEVT(filename)));
131 HEPMC3_DEBUG(0,
"deduce_reader: all attempts failed for " << filename);
132 return std::shared_ptr<Reader>(
nullptr);
139 std::vector<std::string> head;
142 size_t backnonempty=0;
143 while ( (back < 200 && backnonempty < 100) && stream) {
144 char c = stream.get(); back++;
146 if (head.back().length()!=0) head.push_back(
"");
148 head.back()+=
c; backnonempty++;
153 HEPMC3_WARNING(
"Input stream is too short or invalid.");
154 return std::shared_ptr<Reader>(
nullptr);
157 for (
size_t i=0; i<back; i++) stream.unget();
159 if ( strncmp(head.at(0).c_str(),
"HepMC::Version",14) == 0 && strncmp(head.at(1).c_str(),
"HepMC::Asciiv3",14)==0 )
161 HEPMC3_DEBUG(0,
"Attempt ReaderAscii");
162 return std::shared_ptr<Reader>((Reader*) (
new ReaderAscii(stream)));
165 if ( strncmp(head.at(0).c_str(),
"HepMC::Version",14) == 0 && strncmp(head.at(1).c_str(),
"HepMC::IO_GenEvent",18)==0 )
167 HEPMC3_DEBUG(0,
"Attempt ReaderAsciiHepMC2");
168 return std::shared_ptr<Reader>((Reader*) (
new ReaderAsciiHepMC2(stream)));
171 if ( strncmp(head.at(0).c_str(),
"<LesHouchesEvents",17) == 0)
173 HEPMC3_DEBUG(0,
"Attempt ReaderLHEF");
174 return std::shared_ptr<Reader>((Reader*) (
new ReaderLHEF(stream)));
176 HEPMC3_DEBUG(0,
"Attempt ReaderHEPEVT");
177 std::stringstream st_e(head.at(0).c_str());
187 if (attr==
' ')
continue;
192 HEPEVT=
static_cast<bool>(st_e>>m_i>>m_p);
195 if (HEPEVT)
return std::shared_ptr<Reader>((Reader*) (
new ReaderHEPEVT(stream)));
196 HEPMC3_DEBUG(0,
"deduce_reader: all attempts failed");
197 return std::shared_ptr<Reader>(
nullptr);