Add a routine to read dump files header.

	* mln/io/dump/all.hh: Include a new file.

	* mln/io/dump/get_header.hh: New.

milena/ChangeLog

+2010-02-16  Guillaume Lazzara  <z@lrde.epita.fr>
+
+	Add a routine to read dump files header.
+
+	* mln/io/dump/all.hh: Include a new file.
+
+	* mln/io/dump/get_header.hh: New.
+
 2010-02-16  Guillaume Lazzara  <z@lrde.epita.fr>
 	Add a routine to read DICOM files header.

milena/mln/io/dump/all.hh

@@ -41,6 +41,7 @@ namespace mln
 
 }
 
+# include <mln/io/dump/get_header.hh>
 # include <mln/io/dump/load.hh>
 # include <mln/io/dump/save.hh>
 

milena/mln/io/dump/get_header.hh

+// Copyright (C) 2010 EPITA Research and Development Laboratory (LRDE)
+//
+// This file is part of Olena.
+//
+// Olena 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, version 2 of the License.
+//
+// Olena 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 Olena.  If not, see <http://www.gnu.org/licenses/>.
+//
+// As a special exception, you may use this file as part of a free
+// software project without restriction.  Specifically, if other files
+// instantiate templates or use macros or inline functions from this
+// file, or you compile this file and link it with other files to produce
+// an executable, this file does not by itself cause the resulting
+// executable to be covered by the GNU General Public License.  This
+// exception does not however invalidate any other reasons why the
+// executable file might be covered by the GNU General Public License.
+
+#ifndef MLN_IO_DUMP_GET_HEADER_HH
+# define MLN_IO_DUMP_GET_HEADER_HH
+
+/// \file
+///
+/// Load a Milena image dumped into a file.
+
+# include <iostream>
+# include <fstream>
+
+# include <mln/core/concept/image.hh>
+# include <mln/core/routine/initialize.hh>
+# include <mln/core/box_runstart_piter.hh>
+# include <mln/core/pixel.hh>
+# include <mln/data/memcpy_.hh>
+
+namespace mln
+{
+
+  namespace io
+  {
+
+    namespace dump
+    {
+
+      /// Store dump file header.
+      struct dump_header
+      {
+	unsigned dim;
+	std::string value_type;
+	util::array<unsigned> size;
+      };
+
+
+      /// Retrieve header in a dump file.
+      dump_header get_header(const std::string& filename);
+
+
+# ifndef MLN_INCLUDE_ONLY
+
+
+      dump_header get_header(const std::string& filename)
+      {
+	trace::entering("mln::io::dump::get_header");
+
+	dump_header header;
+
+	std::ifstream file(filename.c_str());
+	if (! file)
+	{
+	  std::cerr << "io::dump::get_header - Error: cannot open file '"
+		    << filename << "'!"
+		    << std::endl;
+	  abort();
+	}
+
+
+	// Milena's file type ?
+	std::string file_type;
+	file >> file_type;
+	if (file_type != "milena/dump")
+	{
+	  std::cerr << "io::dump::load - Error: invalid file type. '"
+		    << filename
+		    << "' is NOT a valid milena/dump file!"
+		    << std::endl;
+	  abort();
+	}
+
+	// Dimension
+	file >> header.dim;
+
+	// Size information - Skip it, useless.
+	header.size.resize(header.dim);
+	for (unsigned i = 0; i < header.dim; ++i)
+	  file >> header.size[i];
+
+	// Skipping endline.
+	char c;
+	file.get(c);
+
+	// Value type name ?
+	// WARNING: value type name limited to 255 characters...
+	char value_type[255];
+	file.getline(value_type, 255);
+	header.value_type = value_type;
+
+	trace::exiting("mln::io::dump::get_header");
+	return header;
+      }
+
+
+# endif // ! MLN_INCLUDE_ONLY
+
+    } // end of namespace mln::io::dump
+
+  } // end of namespace mln::io
+
+} // end of namespace mln
+
+#endif // ! MLN_IO_DUMP_GET_HEADER_HH
+