--- /dev/null
+// File : SMESH_File.cxx
+// Created : Wed Mar 10 11:23:25 2010
+// Author : Edward AGAPOV (eap)
+
+
+#include "SMESH_File.hxx"
+#include "utilities.h"
+
+#include <OSD_File.hxx>
+#include <Standard_ProgramError.hxx>
+#include <Standard_ErrorHandler.hxx>
+#include <Standard_Failure.hxx>
+
+#include <fcntl.h>
+#include <sys/stat.h>
+
+#ifdef WIN32
+#include <io.h>
+#else
+#include <sys/mman.h>
+#endif
+
+//================================================================================
+/*!
+ * \brief Creator opening the file for reading by default
+ */
+//================================================================================
+
+SMESH_File::SMESH_File(const std::string& name, bool open)
+ :_name(name), _size(-1), _file(0), _map(0), _pos(0), _end(0)
+{
+ if ( open ) this->open();
+}
+
+//================================================================================
+/*!
+ * \brief Destructor closing the file
+ */
+//================================================================================
+
+SMESH_File::~SMESH_File()
+{
+ close();
+}
+
+//================================================================================
+/*!
+ * \brief Open file for reading. Return true if there is something to read
+ */
+//================================================================================
+
+bool SMESH_File::open()
+{
+ int length = size();
+ if ( !_map && length > 0 )
+ {
+#ifdef WNT
+ _file = CreateFile(_name.data(), GENERIC_READ, FILE_SHARE_READ,
+ NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+ bool ok = ( _file != INVALID_HANDLE_VALUE );
+#else
+ _file = ::open(_name.data(), O_RDONLY );
+ bool ok = ( _file > 0 );
+#endif
+ if ( ok )
+ {
+#ifdef WNT
+ _mapObj = CreateFileMapping(_file, NULL, PAGE_READONLY, 0, (DWORD)length, NULL);
+ _map = (void*) MapViewOfFile( _mapObj, FILE_MAP_READ, 0, 0, 0 );
+#else
+ _map = ::mmap(0,length,PROT_READ,MAP_PRIVATE,_file,0);
+ if ( _map == MAP_FAILED ) _map = NULL;
+#endif
+ if ( _map != NULL )
+ {
+ _size = length;
+ _pos = (char*) _map;
+ _end = _pos + _size;
+ }
+ else
+ {
+#ifdef WNT
+ CloseHandle(_mapObj);
+ CloseHandle(_file);
+#else
+ ::close(_file);
+#endif
+ }
+ }
+ }
+ return _pos;
+}
+
+//================================================================================
+/*!
+ * \brief Close the file
+ */
+//================================================================================
+
+void SMESH_File::close()
+{
+ if ( _map != NULL )
+ {
+#ifdef WNT
+ UnmapViewOfFile(_map);
+ CloseHandle(_mapObj);
+ CloseHandle(_file);
+#else
+ ::munmap(_map, _size);
+ ::close(_file);
+#endif
+ _map = NULL;
+ _pos = _end = 0;
+ _size = -1;
+ }
+}
+
+//================================================================================
+/*!
+ * \brief Remove the file
+ */
+//================================================================================
+
+bool SMESH_File::remove()
+{
+ close();
+ try {
+ OSD_File( TCollection_AsciiString((char*)_name.data()) ).Remove();
+ }
+ catch ( Standard_ProgramError ) {
+ MESSAGE("Can't remove file: " << _name << " ; file does not exist or permission denied");
+ return false;
+ }
+ return true;
+}
+
+//================================================================================
+/*!
+ * \brief Return file size
+ */
+//================================================================================
+
+int SMESH_File::size() const
+{
+ if ( _size >= 0 ) return _size; // size of open file
+
+ int size = -1;
+ int file = ::open( _name.data(), O_RDONLY );
+ if ( file > 0 )
+ {
+ struct stat status;
+ int err = fstat( file, &status);
+ if ( !err )
+ size = status.st_size;
+ ::close( file );
+ }
+ return size;
+}
+
+//================================================================================
+/*!
+ * \brief Set cursor to the given position
+ */
+//================================================================================
+
+void SMESH_File::setPos(const char* pos)
+{
+ if ( pos > (const char*)_map && pos < _end )
+ _pos = (char*) pos;
+}
+
+//================================================================================
+/*!
+ * \brief Skip till current line end and return the skipped string
+ */
+//================================================================================
+
+std::string SMESH_File::getLine()
+{
+ std::string line;
+ const char* p = _pos;
+ while ( !eof() )
+ if ( *(++_pos) == '\n' )
+ break;
+ line.append( p, _pos );
+ if ( !eof() ) _pos++;
+ return line;
+}
+
+//================================================================================
+/*!
+ * \brief Move cursor to the file beginning
+ */
+//================================================================================
+
+void SMESH_File::rewind()
+{
+ _pos = (char*) _map;
+}
+
+//================================================================================
+/*!
+ * \brief Fill vector by reading out integers from file. Vector size gives number
+ * of integers to read
+ */
+//================================================================================
+
+bool SMESH_File::getInts(std::vector<int>& ints)
+{
+ int i = 0;
+ while ( i < ints.size() )
+ {
+ while ( !isdigit( *_pos ) && !eof()) ++_pos;
+ if ( eof() ) break;
+ if ( _pos[-1] == '-' ) --_pos;
+ ints[ i++ ] = strtol( _pos, (char**)&_pos, 10 );
+ }
+ return ( i == ints.size() );
+}
--- /dev/null
+// Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
+//
+// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+//
+// 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 2.1 of the License.
+//
+// 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
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+// File : SMESH_File.hxx
+// Created : Wed Mar 10 10:33:04 2010
+// Author : Edward AGAPOV (eap)
+
+
+#ifndef __SMESH_File_HXX__
+#define __SMESH_File_HXX__
+
+#include "SMESH_SMESH.hxx"
+
+#include <string>
+#include <vector>
+
+/*!
+ * \brief High level util for effective file reading and other file operations
+ */
+class SMESH_File
+{
+public:
+
+ SMESH_File(const std::string& name, bool open=true);
+
+ ~SMESH_File();
+
+ std::string getName() const { return _name; }
+
+ bool open();
+
+ void close();
+
+ bool remove();
+
+ int size() const;
+
+ // ------------------------
+ // Access to file contents
+ // ------------------------
+
+ operator const char*() const { return _pos; }
+
+ bool operator++() { return ++_pos < _end; }
+
+ void operator +=(int posDelta) { _pos+=posDelta; }
+
+ bool eof() const { return _pos >= _end; }
+
+ const char* getPos() const { return _pos; }
+
+ void setPos(const char* pos);
+
+ std::string getLine();
+
+ void rewind();
+
+ bool getInts(std::vector<int>& ids);
+
+private:
+
+ std::string _name; //!< file name
+ int _size; //!< file size
+#ifdef WNT
+ HANDLE _file, _mapObj;
+#else
+ int _file;
+#endif
+ void* _map;
+ const char* _pos; //!< current position
+ const char* _end; //!< position after file end
+};
+
+#endif
