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/*
** Copyright 2012 Kamil Rytarowski < kamil AT mageia DOT org >
**
** This Source Code Form is subject to the terms of the Mozilla Public
** License, v. 2.0. If a copy of the MPL was not distributed with this
** file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <chrono>
#include <cstdlib>
#include <ctime>
#include <iomanip>
#include <iostream>
#include <locale>
#include <map>
#include <set>
#include <sstream>
#include <string>
#include <tuple>
#include <vector>
#include <boost/date_time/posix_time/posix_time.hpp>
#include "pugixml.hpp"
typedef std::tuple<unsigned long /* revision */,
std::string /* author */,
boost::posix_time::ptime /* date */> tuple;
int main(int argc, char **argv)
{
/*
** Read text stream from stdin
*/
std::cin >> std::noskipws; /* Don't skip whitespaces */
/*
** Use iterators to slurp data from the standard input
*/
std::istream_iterator<char> it(std::cin);
std::istream_iterator<char> end;
const std::string input(it, end);
pugi::xml_document doc;
pugi::xml_parse_result result = doc.load_buffer(input.c_str(), input.size());
#ifndef NDEBUG
std::cerr << "Load result: " << result.description() << "\n";
#endif
/*
** <?xml version="1.0" encoding="UTF-8"?>
** <log>
** <logentry
** revision="1234">
** <author>author</author>
** <date>2012-01-21T10:00:00.000000Z</date>
** </logentry>
** </log>
*/
pugi::xml_node log = doc.child("log");
std::vector<tuple> table;
for (pugi::xml_node logentry: log.children())
{
unsigned long revision = std::stoul(logentry.attribute("revision").value());
std::string author = logentry.child("author").text().get();
#ifndef NDEBUG
std::cerr << revision << "\t" << author << "\t";
#endif
std::string datetime = logentry.child("date").text().get();
boost::posix_time::time_input_facet * facet =
new boost::posix_time::time_input_facet("%Y-%m-%dT%H:%M:%sZ"); /* 'Z' stands for UTC */
std::stringstream ss;
ss.imbue(std::locale(std::locale(), facet));
ss << datetime;
boost::posix_time::ptime date;
ss >> date;
#ifndef NDEBUG
std::cerr << datetime << "\t" << date << "\n";
#endif
table.push_back(std::make_tuple(revision, author, date));
}
/*
** Statistics:
**
** 1. Overall number of the commiters
** 2. Number of commits per a commiter
** 3.
*/
/*
** 1. Overall number of the commiters
*/
unsigned int overall_commiters = 0;
{
std::set<std::string> tmp_set;
overall_commiters =
(unsigned int) count_if(table.begin(), table.end(), [&tmp_set](tuple & t)
{
std::string author = std::get<1>(t);
if (tmp_set.empty())
{
tmp_set.insert(author);
return true;
}
else
{
if (tmp_set.find(author) == tmp_set.end())
{
tmp_set.insert(author);
return true;
}
else
return false;
}
}
);
}
#ifndef NDEBUG
std::cerr << "Overall commiters: " << overall_commiters << "\n";
#endif
/*
** 2. Number of commits per a commiter
*/
std::map<std::string, unsigned int> commits_per_a_commiter;
{
for(auto t : table)
{
std::string author = std::get<1>(t);
if (commits_per_a_commiter.empty())
commits_per_a_commiter.insert(std::pair<std::string, unsigned int>(author, 1));
else
{
auto a = commits_per_a_commiter.find(author);
if (a == commits_per_a_commiter.end())
commits_per_a_commiter.insert(std::pair<std::string, unsigned int>(author, 1));
else
commits_per_a_commiter.at(author) = (commits_per_a_commiter.at(author) + 1);
}
}
}
#ifndef NDEBUG
std::cerr << "Commits per a commiter:\n";
for(auto c : commits_per_a_commiter)
{
std::cerr << "\t" << (c.first) << "\t" << (c.second) << "\n";
}
#endif
return EXIT_SUCCESS;
}
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