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#include <iostream>
#include <vector>
#include <string>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/split.hpp>
#include <boost/algorithm/string/trim.hpp>
#include <boost/date_time/posix_time/ptime.hpp>
#include <boost/date_time/local_time/local_time.hpp>
#include <boost/lambda/lambda.hpp>
#include <boost/lambda/bind.hpp>
#include "string.hpp"
#include "locale.hpp"
using namespace std;
using namespace ds;
using namespace boost;
using namespace boost::lambda;
using namespace boost::posix_time;
using namespace boost::local_time;
typedef boost::split_iterator<string::iterator> string_split_iterator;
main(int argc, char *argv[]) {
csv_string s;
vector <csv_string> v;
ptime start, stop;
if (argc<2) {
cout << argv[0] << " [file.csv]" << endl;
abort();
}
std::ifstream f(argv[1]);
if (!f) {
cout << "Can't open input file " << argv[1] << endl;
abort();
}
// configuring special locale
std::locale loc(std::locale::classic(), new myctype<char>());
while (std::getline(f, s, '\n')); // caching
f.clear(); // forget we hit the end of file
f.seekg(0, ios::beg);
start = microsec_clock::local_time();
while (std::getline(f, s, '\n')) {
v = s.split(',');
// cout << v[0] << endl;
}
stop = microsec_clock::local_time();
time_period cdur0(start, stop);
f.clear(); // forget we hit the end of file
f.seekg(0, ios::beg);
start = microsec_clock::local_time();
while (std::getline(f, s, '\n')) {
v.clear();
for (ds::split_iterator i = s.create_split_iterator(','); i!=ds::split_iterator(); ++i) {
v.push_back(*i);
}
// cout << v[0] << endl;
}
stop = microsec_clock::local_time();
time_period cdur1(start, stop);
f.clear(); // forget we hit the end of file
f.seekg(0, ios::beg);
start = microsec_clock::local_time();
while (std::getline(f, s, '\n')) {
boost::split(v, s, boost::is_any_of(","));
for_each(v.begin(), v.end(), bind(trim<string>, _1, std::locale()));
// cout << v[0] << endl;
}
stop = microsec_clock::local_time();
time_period cdur2(start, stop);
f.clear(); // forget we hit the end of file
f.seekg(0, ios::beg);
start = microsec_clock::local_time();
while (std::getline(f, s, '\n')) {
v.clear();
for (string_split_iterator i = make_split_iterator(s, first_finder(",", is_equal())); i!=string_split_iterator(); ++i) {
v.push_back(trim_copy(copy_range<std::string>(*i)));
}
// cout << v[0] << endl;
}
stop = microsec_clock::local_time();
time_period cdur3(start, stop);
f.clear(); // forget we hit the end of file
f.seekg(0, ios::beg);
start = microsec_clock::local_time();
while (std::getline(f, s, '\n')) {
v.clear();
for (string_split_iterator i = make_split_iterator(s, first_finder(",", is_equal())); i!=string_split_iterator(); ++i) {
string stmp;
trim_copy_if(back_inserter(stmp), *i, is_space());
v.push_back(stmp);
}
// cout << v[0] << endl;
}
stop = microsec_clock::local_time();
time_period cdur4(start, stop);
f.clear(); // forget we hit the end of file
f.seekg(0, ios::beg);
start = microsec_clock::local_time();
while (std::getline(f, s, '\n')) {
v.clear();
for (string_split_iterator i = make_split_iterator(s, first_finder(",", is_equal())); i!=string_split_iterator(); ++i) {
string::iterator tend =
boost::algorithm::detail::trim_end(begin(*i), end(*i), is_space());
string::iterator tbegin =
boost::algorithm::detail::trim_begin(begin(*i), tend, is_space());
v.push_back(string(tbegin, tend));
}
// cout << v[2] << "." << endl;
}
stop = microsec_clock::local_time();
time_period cdur5(start, stop);
f.clear(); // forget we hit the end of file
f.seekg(0, ios::beg);
start = microsec_clock::local_time();
while (std::getline(f, s, '\n')) {
string stmp;
v.clear();
std::istringstream ins (s);
ins.imbue(loc);
while (ins >> stmp) v.push_back(stmp);
// cout << v[0] << endl;
}
stop = microsec_clock::local_time();
time_period cdur6(start, stop);
f.clear(); // forget we hit the end of file
f.seekg(0, ios::beg);
start = microsec_clock::local_time();
while (std::getline(f, s, '\n')) {
std::istringstream ins (s);
ins.imbue(loc);
istream_iterator<csv_string> start(ins);
istream_iterator<csv_string> end;
v = vector<csv_string>(start, end);
// cout << v[0] << endl;
}
stop = microsec_clock::local_time();
time_period cdur7(start, stop);
cout << "Own algorithm : " << cdur0.length() << endl;
cout << "Own algorithm (iter) : " << cdur1.length() << endl;
cout << "Boost stright forward : " << cdur2.length() << endl;
cout << "Boost optimized (1) : " << cdur3.length() << endl;
cout << "Boost optimized (2) : " << cdur4.length() << endl;
cout << "Boost optimized (3) : " << cdur5.length() << endl;
cout << "Overriding ctype facet (1) : " << cdur6.length() << " (*)" << endl;
cout << "Overriding ctype facet (2) : " << cdur7.length() << " (*)" << endl;
cout << endl << "(*) can read directly into the numericals, but triming should be worked out" << endl;
}
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