source: branches/replacing_gnuplot/lib/BlameStats.cc @ 845

// $Id: BlameStats.cc 845 2009-11-16 22:27:19Z jari $

/*
  Copyright (C) 2005 Peter Johansson
  Copyright (C) 2006, 2007 Jari Häkkinen, Peter Johansson
  Copyright (C) 2009 Peter Johansson

  This file is part of svndigest, http://dev.thep.lu.se/svndigest

  svndigest is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 3 of the License, or
  (at your option) any later version.

  svndigest is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with svndigest. If not, see <http://www.gnu.org/licenses/>.
*/

#include "BlameStats.h"

#include "Functor.h"
#include "SVNblame.h"
#include "SVNinfo.h"
#include "SVNlog.h"
#include "utility.h"

#include <algorithm>
#include <cassert>
#include <cstdlib>
#include <fstream>
#include <functional>
#include <iostream>
#include <iterator>
#include <map>
#include <numeric>
#include <string>
#include <sstream>
#include <unistd.h>
#include <utility>
#include <vector>


namespace theplu{
namespace svndigest{


  BlameStats::BlameStats(const std::string& path)
    : Stats(path)
  {
  }


  BlameStats::BlameStats(const BlameStats& other)
  : Stats(other)
  {
  }


  void BlameStats::fill_in(Author2Vector& a2v, svn_revnum_t rev)
  {
    if (rev==0)
      return;
    for (std::set<std::string>::const_iterator iter(authors().begin());
         iter!=authors().end(); ++iter) {
      std::vector<unsigned int>& vec = a2v[*iter];
      vec.resize(revision()+1);
      assert(rev<static_cast<svn_revnum_t>(vec.size()));
      vec[rev]=vec[rev-1];
    }
  }


  void BlameStats::do_parse(const std::string& path, svn_revnum_t first_rev)
  {
    SVNlog log(path);
    typedef std::set<svn_revnum_t> RevSet;
    RevSet revs;
    std::transform(log.commits().begin(), log.commits().end(),
                   std::inserter(revs, revs.begin()), 
                   std::mem_fun_ref(&Commitment::revision));
    for (RevSet::reverse_iterator rev_iter=revs.rbegin();
         rev_iter!=revs.rend() && *rev_iter>=first_rev; ++rev_iter){
      SVNblame svn_blame(path, *rev_iter);
      LineTypeParser parser(path);
      while (svn_blame.valid()) {
        add(svn_blame.author(), *rev_iter, parser.parse(svn_blame.line()));
        // I dont trust blame and log behave consistent (stop-on-copy).
        revs.insert(svn_blame.revision());
        svn_blame.next_line();
      }
    }
    
    // filling in pristine revisions, i.e., revs that are larger than
    // first_rev and not occuring in revs.
    RevSet::iterator rev_iter=revs.begin();
    svn_revnum_t rev = first_rev;
    while (rev<=revision()) {
      if (rev_iter!=revs.end() && rev>*rev_iter)
        ++rev_iter;
      else if (rev_iter!=revs.end() && rev==*rev_iter) {
        ++rev_iter;
        ++rev;
      }
      else {
        fill_in(code_stats(),rev);
        fill_in(comment_stats(),rev);
        fill_in(other_stats(),rev);
        fill_in(copyright_stats(),rev);
        ++rev;
      }
    }
  }


}} // end of namespace svndigest and namespace theplu