source: trunk/lib/File.cc @ 1239

// $Id: File.cc 1239 2010-10-23 23:57:56Z peter $

/*
  Copyright (C) 2005, 2006, 2007, 2008, 2009 Jari Häkkinen, Peter Johansson
  Copyright (C) 2010 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 "File.h"

#include "Alias.h"
#include "Colors.h"
#include "Configuration.h"
#include "Date.h"
#include "Graph.h"
#include "html_utility.h"
#include "HtmlStream.h"
#include "NodeVisitor.h"
#include "Stats.h"
#include "SVNblame.h"
#include "SVNlog.h"
#include "TinyStats.h"

#include <algorithm>
#include <cassert>
#include <cstdio>
#include <ctime>
#include <fstream>
#include <iostream>
#include <map>
#include <stdexcept>
#include <string>
#include <sstream>
#include <sys/stat.h>

namespace theplu{
namespace svndigest{


  File::File(const unsigned int level, const std::string& path, 
             const std::string& output) 
    : Node(level,path,output)
  {
    output_dir_=output;
    if (!output_dir_.empty())
      output_dir_+='/';
  }


  std::string File::blame_output_file_name(void) const
  {
    return "blame_output/" + local_path() + ".html";
  }


  std::string File::href(void) const
  { 
    return name()+".html"; 
  }


  svn_revnum_t File::last_changed_rev(void) const
  {
    return svn_info().last_changed_rev();
  }


  void File::log_core(SVNlog&) const
  {
  }


  std::string File::node_type(void) const
  {
    return std::string("file");
  }


  std::string File::output_path(void) const
  {
    return output_dir()+name()+".html";
  }


  const StatsCollection& File::parse(bool verbose, bool ignore)
  {
    if (verbose)
      std::cout << "Parsing '" << path_ << "'" << std::endl; 
    stats_.reset();
    std::string cache_dir = directory_name(path()) + std::string(".svndigest/"); 
    std::string cache_file = cache_dir + name()+std::string(".svndigest-cache");
    if (!ignore && node_exist(cache_file)){
      std::ifstream is(cache_file.c_str());
      if (stats_.load_cache(is)) {
        is.close();
        return stats_;
      }
      is.close();
    }
    else 
      stats_.parse(path_);
    if (!node_exist(cache_dir))
      mkdir(cache_dir);
    std::string tmp_cache_file(cache_file+"~");
    std::ofstream os(tmp_cache_file.c_str());
    assert(os);
    stats_.print(os);
    os.close();
    rename(tmp_cache_file, cache_file);
    return stats_;
  }


  void File::print_blame(std::ofstream& os) const
  {
    os << "<br /><h3>" << local_path() << "</h3>";
    os << "<div class=\"blame_legend\">\n";
    os << "<dl>\n";
    os << "<dt class=\"code\"></dt><dd>Code</dd>\n";
    os << "<dt class=\"comment\"></dt><dd>Comments</dd>\n";
    os << "<dt class=\"other\"></dt><dd>Other</dd>\n";
    os << "</dl>\n</div>\n";
    os << "<table class=\"blame\">\n";
    os << "<thead>\n";
    os << "<tr>\n";
    os << "<th class=\"rev\">Rev</th>\n";
    os << "<th class=\"date\">Date</th>\n";
    os << "<th class=\"author\">Author</th>\n";
    os << "<th class=\"line\">Line</th>\n";
    os << "<th></th>\n";
    os << "</tr>\n</thead>\n";
    os << "<tbody>\n";
    HtmlStream hs(os);
    SVNblame blame(path_);
    LineTypeParser parser(path_);
    while (blame.valid()) {
      parser.parse(blame.line());
      blame.next_line();
    }
    blame.reset();

    std::vector<LineTypeParser::line_type>::const_iterator 
      line_type(parser.type().begin());
    int last=0;
    int first=0;
    bool using_dates=true;
    if (!Graph::date_xticks()) {
      using_dates=false;
      last = stats_["classic"].revision();
    }
    else {
      last = Graph::xticks().back();
      // earliest date corresponds either to revision 0 or revision 1 
      first = std::min(Graph::xticks()[0],Graph::xticks()[1]);
    }
    // color is calculated linearly on time, c = kt + m
    // brightest color (for oldest rev in log) is set to 192.
    double k = 192.0/(first-last);
    double m = -last*k; 
    while (blame.valid()) {
      std::string color;
      if (using_dates)
        color = hex(static_cast<int>(k*Date(blame.date()).seconds()+m),2);
      else
        color = hex(static_cast<int>(k*blame.revision()+m),2);
      os << "<tr>\n<td class=\"rev\">";
      std::stringstream color_ss;
      color_ss << "#" << color << color << color; 
      os << "<font color=\"" << color_ss.str() << "\">"
         << trac_revision(blame.revision(), color_ss.str())
         << "</font></td>\n<td class=\"date\"><font color=\"#" << color 
         << color << color << "\">" ;
      hs << Date(blame.date())("%d %b %y");
      os << "</font></td>\n<td class=\"author\">";
      const std::string& author_color = 
        Colors::instance().color_str(blame.author());
      assert(!author_color.empty());
      os << "<font color=\"#" << author_color << "\">";
      hs << blame.author();
      os << "</td>\n<td class=\"";
      assert(line_type!=parser.type().end());
      if (*line_type==LineTypeParser::other)
        os << "line-other";
      else if (*line_type==LineTypeParser::comment || 
               *line_type==LineTypeParser::copyright)       
        os << "line-comment";
      else if (*line_type==LineTypeParser::code)
        os << "line-code";
      else {
        std::string msg="File::print_blame(): unexpected line type found";
        throw std::runtime_error(msg);
      }
      os << "\">" << blame.line_no()+1
         << "</td>\n<td>";
      hs << blame.line();
      os << "</td>\n</tr>\n";
      blame.next_line();
      ++line_type;
    }
    os << "</tbody>\n";
    os << "</table>\n";
  }


  void File::print_core(const bool verbose) const 
  {
    mkdir_p(directory_name(blame_output_file_name()));
    std::ofstream os(blame_output_file_name().c_str());
    assert(os.good());
    print_html_start(os, "svndigest", level_+1);
    if (Configuration::instance().output_blame_information())
      print_blame(os);
    print_footer(os);
    os.close();
  }


  void File::print_core(const std::string& stats_type, 
                        const std::string& user, const std::string& line_type,
                        const SVNlog& log) const 
  {
    std::string lpath = local_path();
    if (lpath.empty())
      lpath = "index";
    std::string outpath = stats_type+"/"+user+"/"+line_type+"/"+lpath;
    std::string imagefile = stats_type+"/"+"images/"+line_type+"/"+lpath;
    std::string html_name(outpath + ".html");
    mkdir_p(directory_name(html_name));
    mkdir_p(directory_name(imagefile));
    std::ofstream os(html_name.c_str());
    assert(os);
    print_header(os, name(), level_+3, user, line_type, lpath+".html",
                 stats_type);
    path_anchor(os);

    std::stringstream ss;
    for (size_t i=0; i<level_; ++i)
      ss << "../";
    ss << "../../../";
    if (user=="all")
      ss << stats_[stats_type].plot(imagefile,line_type);
    else
      ss << imagefile;
    os << "<p class=\"plot\">\n"; 
    os << image(ss.str());
    os << "</p>\n";

    print_author_summary(os, stats_[stats_type], line_type, log);
    os << "\n";
    os << "<h3>"
       << anchor(blame_output_file_name(), 
                 "Blame Information", level_+3) 
       << "</h3>\n";

    print_footer(os);
    os.close(); 
  }


  void File::traverse(NodeVisitor& visitor)
  {
    visitor.visit(*this);
  }

}} // end of namespace svndigest and namespace theplu