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/* -*- C++ -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library

 *

 * Copyright (C) 2003-2008

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

///\ingroup demos

///\file

///\brief Demonstrating graph input and output

///

/// This simple demo program gives an example of how to read and write

/// a graph and additional maps (on the nodes or the edges) from/to a

/// stream. 

///

/// \include reader_writer_demo.cc

#include <iostream>

#include <lemon/smart_graph.h>

#include <lemon/lgf_reader.h>

#include <lemon/lgf_writer.h>

#include <lemon/random.h>

using namespace lemon;

int main(int argc, const char *argv[]) {

  const int n = argc > 1 ? std::atoi(argv[1]) : 20;

  const int m = argc > 3 ? std::atoi(argv[3]) : 100;

  SmartDigraph digraph;

  std::stringstream ss;

  try {

    typedef SmartDigraph Digraph;

    typedef Digraph::Node Node;

    typedef Digraph::Arc Arc;

    typedef Digraph::ArcIt ArcIt;

    typedef Digraph::NodeMap<int> PotentialMap;

    typedef Digraph::ArcMap<int> CapacityMap;

    typedef Digraph::ArcMap<std::string> NameMap;

    Digraph digraph;

    PotentialMap potential(digraph);

    CapacityMap capacity(digraph);

    NameMap name(digraph);

    std::vector<Node> nodes;

    for (int i = 0; i < n; ++i) {

      Node node = digraph.addNode();

      potential[node] = rnd[m];

      nodes.push_back(node);

    }

    std::vector<Arc> arcs;

    for (int i = 0; i < e; ++i) {

      int s = rnd[n];

      int t = rnd[n];

      int c = rnd[m];

      Arc arc = digraph.addArc(nodes[s], nodes[t]);

      capacity[arc] = c;

      std::ostringstream os;

      os << "arc \t" << i << std::endl;

      name[arc] = os.str();

      arcs.push_back(arc);

    }

    DigraphWriter<Digraph>(ss, digraph).

      nodeMap("potential", potential).

      arcMap("capacity", capacity).

      arcMap("name", name).

      node("source", nodes[0]).

      node("target", nodes[1]).

      arc("bottleneck", arcs[e / 2]).

      attribute("creator", "lemon library").

      run();

  } catch (DataFormatError& error) {

    std::cerr << error.what() << std::endl;

  }

  try {

    typedef SmartDigraph Digraph;

    typedef Digraph::Node Node;

    typedef Digraph::Arc Arc;

    typedef Digraph::ArcIt ArcIt;

  inline void assert_fail_abort(const char *file, int line,

				const char *function, const char* message,

				const char *assertion)

  {

    assert_fail_log(file, line, function, message, assertion);

    std::abort();

  }

  namespace _assert_bits {

    inline const char* cstringify(const std::string& str) {

      return str.c_str();

    }

    inline const char* cstringify(const char* str) {

      return str;

    }    

  }

}

#endif // LEMON_ASSERT_H

#undef LEMON_ASSERT

#undef LEMON_FIXME

#undef LEMON_DEBUG

#if (defined(LEMON_ASSERT_LOG) ? 1 : 0) +		\

  (defined(LEMON_ASSERT_ABORT) ? 1 : 0) +		\

  (defined(LEMON_ASSERT_CUSTOM) ? 1 : 0) > 1

#error "LEMON assertion system is not set properly"

#endif

#if ((defined(LEMON_ASSERT_LOG) ? 1 : 0) +		\

     (defined(LEMON_ASSERT_ABORT) ? 1 : 0) +		\

     (defined(LEMON_ASSERT_CUSTOM) ? 1 : 0) == 1 ||	\

     defined(LEMON_ENABLE_ASSERTS)) &&			\

  (defined(LEMON_DISABLE_ASSERTS) ||			\

   defined(NDEBUG))

#error "LEMON assertion system is not set properly"

#endif

#if defined LEMON_ASSERT_LOG

#  undef LEMON_ASSERT_HANDLER

#  define LEMON_ASSERT_HANDLER ::lemon::assert_fail_log

#elif defined LEMON_ASSERT_ABORT

#  undef LEMON_ASSERT_HANDLER

#  define LEMON_ASSERT_HANDLER ::lemon::assert_fail_abort

#elif defined LEMON_ASSERT_CUSTOM

#  undef LEMON_ASSERT_HANDLER

#  ifndef LEMON_CUSTOM_ASSERT_HANDLER

#    error "LEMON_CUSTOM_ASSERT_HANDLER is not set"

#  endif

#  define LEMON_ASSERT_HANDLER LEMON_CUSTOM_ASSERT_HANDLER

#elif defined LEMON_DISABLE_ASSERTS

#  undef LEMON_ASSERT_HANDLER

#elif defined NDEBUG

#  undef LEMON_ASSERT_HANDLER

#else

#  define LEMON_ASSERT_HANDLER ::lemon::assert_fail_abort

#endif

#ifndef LEMON_FUNCTION_NAME

#endif

#ifdef DOXYGEN

/// \ingroup exceptions

///

/// \brief Macro for assertion with customizable message

///

/// Macro for assertion with customizable message.  \param exp An

/// expression that must be convertible to \c bool.  If it is \c

/// false, then an assertion is raised. The concrete behaviour depends

/// on the settings of the assertion system.  \param msg A <tt>const

/// char*</tt> parameter, which can be used to provide information

/// about the circumstances of the failed assertion.

///

/// The assertions are enabled in the default behaviour.

/// You can disable them with the following code:

/// \code

/// #define LEMON_DISABLE_ASSERTS

/// \endcode

/// or with compilation parameters:

/// \code

/// g++ -DLEMON_DISABLE_ASSERTS

/// make CXXFLAGS='-DLEMON_DISABLE_ASSERTS'

/// \endcode

/// The checking is also disabled when the standard macro \c NDEBUG is defined.

/// 

/// The LEMON assertion system has a wide range of customization

/// properties. As a default behaviour the failed assertion prints a

/// short log message to the standard error and aborts the execution.

///

/// The following modes can be used in the assertion system: 

///

/// - \c LEMON_ASSERT_LOG The failed assertion prints a short log

///   message to the standard error and continues the execution.

/// - \c LEMON_ASSERT_ABORT This mode is similar to the \c

///   LEMON_ASSERT_LOG, but it aborts the program. It is the default

///   behaviour.

/// - \c LEMON_ASSERT_CUSTOM The user can define own assertion handler

///   function.

///   \code

///     void custom_assert_handler(const char* file, int line, const char* function,

///                                const char* message, const char* assertion);

///   \endcode

///   The name of the function should be defined as the \c

///   LEMON_CUSTOM_ASSERT_HANDLER macro name. 

///   \code

///     #define LEMON_CUSTOM_ASSERT_HANDLER custom_assert_handler

///   \endcode

///   Whenever an assertion is occured, the custom assertion

///   handler is called with appropiate parameters.

///

/// The assertion mode can also be changed within one compilation unit.

/// If the macros are redefined with other settings and the

/// \ref lemon/assert.h "assert.h" file is reincluded, then the

/// behaviour is changed appropiately to the new settings.

#  define LEMON_ASSERT(exp, msg)					\

  (static_cast<void> (!!(exp) ? 0 : (					\

    LEMON_ASSERT_HANDLER(__FILE__, __LINE__,				\

			 LEMON_FUNCTION_NAME,				\

			 ::lemon::_assert_bits::cstringify(msg), #exp), 0)))

/// \ingroup exceptions

///

/* -*- C++ -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library

 *

 * Copyright (C) 2003-2008

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

#ifndef LEMON_GRAPH_TO_EPS_H

#define LEMON_GRAPH_TO_EPS_H

#include<iostream>

#include<fstream>

#include<sstream>

#include<algorithm>

#include<vector>

#ifndef WIN32

#include<sys/time.h>

#include<ctime>

#else

#include<windows.h>

#endif

#include<lemon/math.h>

#include<lemon/bits/invalid.h>

#include<lemon/dim2.h>

#include<lemon/maps.h>

#include<lemon/color.h>

#include<lemon/bits/bezier.h>

///\ingroup eps_io

///\file

///\brief A well configurable tool for visualizing graphs

namespace lemon {

  namespace _graph_to_eps_bits {

    template<class MT>

    class _NegY {

    public:

      typedef typename MT::Key Key;

      typedef typename MT::Value Value;

      const MT ↦

      int yscale;

      _NegY(const MT &m,bool b) : map(m), yscale(1-b*2) {}

      Value operator[](Key n) { return Value(map[n].x,map[n].y*yscale);}

    };

  }

///Default traits class of \ref GraphToEps

///Default traits class of \ref GraphToEps

///

///\c G is the type of the underlying graph.

template<class G>

struct DefaultGraphToEpsTraits

{

  typedef G Graph;

  typedef typename Graph::Node Node;

  typedef typename Graph::NodeIt NodeIt;

  typedef typename Graph::Arc Arc;

  typedef typename Graph::ArcIt ArcIt;

  typedef typename Graph::InArcIt InArcIt;

  typedef typename Graph::OutArcIt OutArcIt;

  const Graph &g;

  std::ostream& os;

  typedef ConstMap<typename Graph::Node,dim2::Point<double> > CoordsMapType;

  CoordsMapType _coords;

  ConstMap<typename Graph::Node,double > _nodeSizes;

  ConstMap<typename Graph::Node,int > _nodeShapes;

  ConstMap<typename Graph::Node,Color > _nodeColors;

  ConstMap<typename Graph::Arc,Color > _arcColors;

  ConstMap<typename Graph::Arc,double > _arcWidths;

  double _arcWidthScale;

  double _nodeScale;

    ArcIt nthIt(int n) const {

      return ArcIt(*this, n);

    }

    /// \brief The length of the path.

    int length() const { return len; }

    /// \brief Return true when the path is empty.

    int empty() const { return len == 0; }

    /// \break Erase all arcs in the digraph.

    void clear() {

      len = 0;

      if (arcs) delete[] arcs;

      arcs = 0;

    }

    /// \brief The first arc of the path.

    const Arc& front() const {

      return arcs[0];

    }

    /// \brief The last arc of the path.

    const Arc& back() const {

      return arcs[len - 1];

    }

    typedef True BuildTag;

    template <typename CPath>

    void build(const CPath& path) {

      len = path.length();

      arcs = new Arc[len];

      int index = 0;

      for (typename CPath::ArcIt it(path); it != INVALID; ++it) {

        arcs[index] = it;

        ++index;

      }

    }

    template <typename CPath>

    void buildRev(const CPath& path) {

      len = path.length();

      arcs = new Arc[len];

      int index = len;

      for (typename CPath::RevArcIt it(path); it != INVALID; ++it) {

        --index;

        arcs[index] = it;

      }

    }

  private:

    int len;

    Arc* arcs;

  };

  ///////////////////////////////////////////////////////////////////////

  // Additional utilities

  ///////////////////////////////////////////////////////////////////////

  namespace _path_bits {

    template <typename Path, typename Enable = void>

      static const bool value = false;

    };

    > {

      static const bool value = true;

    };

    template <typename Target, typename Source,

    struct PathCopySelector {

      static void copy(Target& target, const Source& source) {

        target.clear();

        for (typename Source::ArcIt it(source); it != INVALID; ++it) {

          target.addBack(it);

        }

      }

    };

      static void copy(Target& target, const Source& source) {

        target.clear();

        for (typename Source::RevArcIt it(source); it != INVALID; ++it) {

          target.addFront(it);

        }

      }

    };

      static void copy(Target& target, const Source& source) {

        target.clear();

        target.build(source);

      }

    };

    template <typename Target, typename Source>

      static void copy(Target& target, const Source& source) {

        target.clear();

        target.buildRev(source);

      }

    };

  }

  /// \brief Make a copy of a path.

  ///

  ///  This function makes a copy of a path.

  template <typename Target, typename Source>

  void copyPath(Target& target, const Source& source) {

    checkConcept<concepts::PathDumper<typename Source::Digraph>, Source>();

    _path_bits::PathCopySelector<Target, Source>::copy(target, source);

  }

  /// \brief Check the consistency of a path.

  ///

  /// This function checks that the target of each arc is the same

  /// as the source of the next one. 

  /// 

  template <typename Digraph, typename Path>

  bool checkPath(const Digraph& digraph, const Path& path) {

    typename Path::ArcIt it(path);

    if (it == INVALID) return true;

    typename Digraph::Node node = digraph.target(it);

    ++it;

    while (it != INVALID) {

      if (digraph.source(it) != node) return false;

      node = digraph.target(it);

      ++it;

    }

    return true;

  }

  /// \brief The source of a path

  ///

  /// This function returns the source of the given path.

  template <typename Digraph, typename Path>

  typename Digraph::Node pathSource(const Digraph& digraph, const Path& path) {

    return digraph.source(path.front());

  }

  /// \brief The target of a path

  ///

  /// This function returns the target of the given path.

  template <typename Digraph, typename Path>

  typename Digraph::Node pathTarget(const Digraph& digraph, const Path& path) {

    return digraph.target(path.back());

  }

  /// \brief Class which helps to iterate through the nodes of a path

  ///

  /// In a sense, the path can be treated as a list of arcs. The

  /// lemon path type stores only this list. As a consequence, it

  /// cannot enumerate the nodes in the path and the zero length paths

  /// cannot have a source node.

  ///

  /// This class implements the node iterator of a path structure. To

  /// provide this feature, the underlying digraph should be passed to

  /// the constructor of the iterator.

  template <typename Path>

/* -*- C++ -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library

 *

 * Copyright (C) 2003-2008

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

#ifndef LEMON_TIME_MEASURE_H

#define LEMON_TIME_MEASURE_H

///\ingroup timecount

///\file

///\brief Tools for measuring cpu usage

#ifdef WIN32

#include <windows.h>

#include <cmath>

#else

#include <sys/times.h>

#include <sys/time.h>

#endif

#include <fstream>

#include <iostream>

namespace lemon {

  /// \addtogroup timecount

  /// @{

  /// A class to store (cpu)time instances.

  /// This class stores five time values.

  /// - a real time

  /// - a user cpu time

  /// - a system cpu time

  /// - a user cpu time of children

  /// - a system cpu time of children

  ///

  /// TimeStamp's can be added to or substracted from each other and

  /// they can be pushed to a stream.

  ///

  /// In most cases, perhaps the \ref Timer or the \ref TimeReport

  /// class is what you want to use instead.

  ///

  ///\author Alpar Juttner

  class TimeStamp

  {

    double utime;

    double stime;

    double cutime;

    double cstime;

    double rtime;

    void _reset() { 

      utime = stime = cutime = cstime = rtime = 0;

    }

  public:

    ///Read the current time values of the process

    void stamp()

    {

#ifndef WIN32

      timeval tv;

      gettimeofday(&tv, 0);

      rtime=tv.tv_sec+double(tv.tv_usec)/1e6;

      tms ts;

      double tck=sysconf(_SC_CLK_TCK);

      times(&ts);

      utime=ts.tms_utime/tck;

      stime=ts.tms_stime/tck;

      cutime=ts.tms_cutime/tck;

      cstime=ts.tms_cstime/tck;

#else

      static const double ch = 4294967296.0e-7;

      static const double cl = 1.0e-7;

      FILETIME system;

      GetSystemTimeAsFileTime(&system);

      rtime = ch * system.dwHighDateTime + cl * system.dwLowDateTime;

      FILETIME create, exit, kernel, user;

      if (GetProcessTimes(GetCurrentProcess(),&create, &exit, &kernel, &user)) {