From 2437820b0fd29fde81e4bd919adff80a1c87ead8 Mon Sep 17 00:00:00 2001
From: Kamil Rytarowski <kamil@mageia.org>
Date: Tue, 25 Dec 2012 14:18:23 +0000
Subject: Initial import.

---
 main.cpp | 167 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 167 insertions(+)
 create mode 100644 main.cpp

(limited to 'main.cpp')

diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..2e44f8b
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,167 @@
+/*
+** 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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