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#ifndef BOOK_FOR_ROOT_HISTOGRAMS
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#define BOOK_FOR_ROOT_HISTOGRAMS
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#include <map>
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#include <string>
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#include "poly.h"
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#include <boost/regex.hpp>
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#include "TH1.h"
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#include "TH1D.h"
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#include "TH2D.h"
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#include "TH3D.h"
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class Book {
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typedef std::map<std::string, TH1*> book_t;
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book_t book;
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const std::string _title;
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typedef const double& double_t;
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typedef const unsigned long& uint_t;
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public:
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Book() : _title("") {}
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Book(const std::string& t) : _title(t) {}
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const std::string& title() const {return _title;}
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TH1* operator()(const std::string& name) { return book[name]; }
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TH1* operator()(const std::string& name) const { return book.find(name)->second; }
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bool contains (const std::string& name) const { return book.find(name) != book.end(); }
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bool empty() const { return book.empty(); }
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long size () const { return book.size(); }
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class const_iterator;
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const_iterator begin(const std::string& re=".*") const {return const_iterator( book.begin(), book.begin(), book.end(), boost::regex(re) ); }
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const_iterator end(const std::string& re=".*") const {return const_iterator( book.end(), book.begin(), book.end(), boost::regex(re) ); }
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void fill( double_t X, const poly<std::string>& names, uint_t NbinsX, double_t Xlow, double_t Xup, double_t W=1 )
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{
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BOOST_FOREACH(std::string name, std::make_pair(names.begin(),names.end())) {
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book_t::const_iterator current = book.find(name);
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if( current == book.end() ) {
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TH1* histogram = book[name] = new TH1D((_title+"/"+name).c_str(), "", NbinsX, Xlow, Xup);
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histogram->SetDirectory(0);
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histogram->Sumw2();
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histogram->Fill(X,W);
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} else current->second->Fill(X,W);
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}
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}
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void fill( double_t X, double_t Y, const poly<std::string>& names, uint_t NbinsX, double_t Xlow, double_t Xup,
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uint_t NbinsY, double_t Ylow, double_t Yup, double_t W=1 )
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{
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BOOST_FOREACH(std::string name, std::make_pair(names.begin(),names.end())) {
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book_t::const_iterator current = book.find(name);
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if( current == book.end() ) {
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TH1* histogram = book[name] = new TH2D((_title+"/"+name).c_str(), "", NbinsX, Xlow, Xup, NbinsY, Ylow, Yup);
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histogram->SetDirectory(0);
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histogram->Sumw2();
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static_cast<TH2*>(histogram)->Fill(X,Y,W);
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} else static_cast<TH2*>(current->second)->Fill(X,Y,W);
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}
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}
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void fill( double_t X, double_t Y, double_t Z, const poly<std::string>& names, uint_t NbinsX, double_t Xlow, double_t Xup,
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uint_t NbinsY, double_t Ylow, double_t Yup,
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uint_t NbinsZ, double_t Zlow, double_t Zup, double_t W=1 )
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{
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BOOST_FOREACH(std::string name, std::make_pair(names.begin(),names.end())) {
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book_t::const_iterator current = book.find(name);
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if( current == book.end() ) {
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TH1* histogram = book[name] = new TH3D((_title+"/"+name).c_str(), "", NbinsX, Xlow, Xup, NbinsY, Ylow, Yup, NbinsZ, Zlow, Zup);
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histogram->SetDirectory(0);
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histogram->Sumw2();
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static_cast<TH3*>(histogram)->Fill(X,Y,Z,W);
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} else static_cast<TH3*>(current->second)->Fill(X,Y,Z,W);
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}
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}
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class const_iterator
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: public boost::iterator_facade< const_iterator, TH1* const, boost::bidirectional_traversal_tag, TH1* const> {
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friend class boost::iterator_core_access;
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std::map<std::string, TH1*>::const_iterator base, begin, end;
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boost::regex expression;
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void increment() { while( ++base!=end && !regex_match( base->first, expression) ); }
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void decrement() { while( base!=begin && !regex_match((--base)->first, expression) ); }
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bool equal(const const_iterator& rhs) const { return base==rhs.base; }
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TH1* const dereference() const { return base->second; }
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typedef std::map<std::string,TH1*>::const_iterator base_t;
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public:
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const_iterator(const base_t& base, const base_t& begin, const base_t& end, const boost::regex& expression )
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: base(base), begin(begin), end(end), expression(expression) { if(base!=end && !regex_match(base->first, expression) ) increment();}
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const std::string& name() {return base->first;}
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typedef TH1* type;
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};
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//long count(const std::string& pattern) const;
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};
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#endif
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