git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@36 331e1502-861f-0410-8da2-ba01fb791d7f

trunk/paradiseo-moeo/tutorials/lesson1/FlowShopBenchmarkParser.h

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+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+// "FlowShopBenchmarkParser.h"
+
+// (c) OPAC Team, LIFL, March 2006
+
+/* This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library 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
+   Lesser General Public License for more details.
+   
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+   
+   Contact: Arnaud.Liefooghe@lifl.fr
+*/
+
+#ifndef _FlowShopBenchmarkParser_h
+#define _FlowShopBenchmarkParser_h
+
+// general include
+#include <stdexcept>
+#include <fstream>
+
+/** Web site to download benchmarks  */
+const static
+  std::string
+  BENCHMARKS_WEB_SITE = "www.lifl.fr/~liefooga/benchmarks/";
+
+
+/** 
+ * Class to handle parameters of a flow-shop instance from a benchmark file
+ * benchmark files are available at www.lifl.fr/~basseur/BenchsUncertain/
+ */
+class FlowShopBenchmarkParser
+{
+
+public:
+
+  /**
+   * constructor
+   * @param const string _benchmarkFileName  the name of the benchmark file
+   */
+  FlowShopBenchmarkParser (const string _benchmarkFileName)
+  {
+    init (_benchmarkFileName);
+  }
+
+  /**
+   * the number of machines
+   */
+  const unsigned
+  getM ()
+  {
+    return M;
+  }
+
+  /**
+   * the number of jobs
+   */
+  const unsigned
+  getN ()
+  {
+    return N;
+  }
+
+  /**
+   * the processing times
+   */
+  const
+    std::vector < std::vector < unsigned > >
+  getP ()
+  {
+    return p;
+  }
+
+  /**
+   * the due-dates
+   */
+  const
+  std::vector < unsigned >
+  getD ()
+  {
+    return d;
+  }
+
+  /** 
+   * printing...
+   */
+  void
+  printOn (ostream & _os) const
+  {
+    _os <<
+      "M=" <<
+      M <<
+      " N=" <<
+      N <<
+      endl;
+    _os <<
+      "*** processing times" <<
+      endl;
+    for (unsigned i = 0; i < M; i++)
+      {
+	for (unsigned j = 0; j < N; j++)
+	  {
+	    _os << p[i][j] << " ";
+	  }
+	_os <<
+	  endl;
+      }
+    _os << "*** due-dates" << endl;
+    for (unsigned j = 0; j < N; j++)
+      {
+	_os << d[j] << " ";
+      }
+    _os << endl << endl;
+  }
+
+private:
+  /** number of machines */
+  unsigned
+    M;
+  /** number of jobs */
+  unsigned
+    N;
+  /** p[i][j] = processing time of job j on machine i */
+  std::vector < std::vector < unsigned > >
+    p;
+  /** d[j] = due-date of the job j */
+  std::vector < unsigned >
+    d;
+
+
+  /**
+   * Initialisation of the parameters with the data contained in the benchmark file
+   * @param const string _benchmarkFileName  the name of the benchmark file
+   */
+  void
+  init (const string _benchmarkFileName)
+  {
+    string buffer;
+    string::size_type start, end;
+    ifstream inputFile (_benchmarkFileName.data (), ios::in);
+    // opening of the benchmark file
+    if (!inputFile)
+      cerr << "*** ERROR : Unable to open the benchmark file '" <<
+	_benchmarkFileName << "'" << endl;
+    // number of jobs (N)
+    getline (inputFile, buffer, '\n');
+    N = atoi (buffer.data ());
+    // number of machines M
+    getline (inputFile, buffer, '\n');
+    M = atoi (buffer.data ());
+    // initial and current seeds (not used)
+    getline (inputFile, buffer, '\n');
+    // processing times and due-dates
+    p = std::vector < std::vector < unsigned > > (M, N);
+    d = std::vector < unsigned > (N);
+    // for each job...
+    for (unsigned j = 0; j < N; j++)
+      {
+	// index of the job (<=> j)
+	getline (inputFile, buffer, '\n');
+	// due-date of the job j
+	getline (inputFile, buffer, '\n');
+	d[j] = atoi (buffer.data ());
+	// processing times of the job j on each machine
+	getline (inputFile, buffer, '\n');
+	start = buffer.find_first_not_of (" ");
+	for (unsigned i = 0; i < M; i++)
+	  {
+	    end = buffer.find_first_of (" ", start);
+	    p[i][j] = atoi (buffer.substr (start, end - start).data ());
+	    start = buffer.find_first_not_of (" ", end);
+	  }
+      }
+    // closing of the input file
+    inputFile.close ();
+  }
+
+};
+
+#endif