--- /dev/null
+// File : FrontTrack_Utils.cxx
+// Created : Tue Apr 25 17:28:58 2017
+// Author : Edward AGAPOV (eap)
+
+#include "FrontTrack_Utils.hxx"
+
+#include <XAO_Xao.hxx>
+#include <XAO_Group.hxx>
+
+#include <fcntl.h>
+#include <boost/filesystem.hpp>
+
+namespace boofs = boost::filesystem;
+
+//================================================================================
+/*
+ * \brief Check if a file exists
+ */
+//================================================================================
+
+bool FT_Utils::fileExists( const std::string& path )
+{
+ if ( path.empty() )
+ return false;
+
+ boost::system::error_code err;
+ bool res = boofs::exists( path, err );
+
+ return err ? false : res;
+}
+
+//================================================================================
+/*!
+ * \brief Check if a file can be created/overwritten
+ */
+//================================================================================
+
+bool FT_Utils::canWrite( const std::string& path )
+{
+ if ( path.empty() )
+ return false;
+
+ bool can = false;
+#ifdef WIN32
+
+ HANDLE file = CreateFile( path.c_str(), // name of the write
+ GENERIC_WRITE, // open for writing
+ 0, // do not share
+ NULL, // default security
+ OPEN_ALWAYS, // CREATE NEW or OPEN EXISTING
+ FILE_ATTRIBUTE_NORMAL, // normal file
+ NULL); // no attr. template
+ can = ( file != INVALID_HANDLE_VALUE );
+ CloseHandle( file );
+
+#else
+
+ int file = ::open( path.c_str(),
+ O_WRONLY | O_CREAT,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ); // rw-r--r--
+ can = ( file >= 0 );
+
+#endif
+
+ return can;
+}
+
+//================================================================================
+/*!
+ * \brief Make a map of XAO groups
+ */
+//================================================================================
+
+FT_Utils::XaoGroups::XaoGroups( const XAO::Xao* theXao )
+{
+ XAO::Xao* xao = const_cast< XAO::Xao* >( theXao );
+
+ for ( int iG = 0; iG < theXao->countGroups(); ++iG )
+ {
+ XAO::Group* group = xao->getGroup( iG );
+
+ if ( group->getDimension() == 1 )
+
+ _xaoGroups[ 0 ].insert( std::make_pair( group->getName(), group ));
+
+ else if ( group->getDimension() == 2 )
+
+ _xaoGroups[ 1 ].insert( std::make_pair( group->getName(), group ));
+ }
+}
+
+//================================================================================
+/*!
+ * \brief Return FT_Projector's by a group name
+ * \param [in] groupName - the group name
+ * \param [in] dim - the group dimension
+ * \param [in] allProjectors - the projector of all shapes of \a dim dimension
+ * \param [out] groupProjectors - projectors to shapes of the group
+ * \return int - number of found shapes
+ */
+//================================================================================
+
+int FT_Utils::XaoGroups::getProjectors( const std::string& groupName,
+ const int dim,
+ const std::vector< FT_Projector > & allProjectors,
+ std::vector< const FT_Projector* > & groupProjectors) const
+{
+ // get namesake groups
+
+ const TGroupByNameMap* groupMap = 0;
+ if ( dim == 1 )
+ groupMap = &_xaoGroups[ 0 ];
+ else if ( dim == 2 )
+ groupMap = &_xaoGroups[ 1 ];
+ else
+ return 0;
+
+ TGroupByNameMap::const_iterator name2gr = groupMap->find( groupName );
+ if ( name2gr == groupMap->end() )
+ return 0;
+
+ std::vector< XAO::Group* > groups;
+ groups.push_back( name2gr->second );
+
+ for ( ++name2gr; name2gr != groupMap->end(); ++name2gr )
+ {
+ if ( name2gr->second->getName() == groupName )
+ groups.push_back( name2gr->second );
+ else
+ break;
+ }
+
+ // get projectors
+
+ int nbFound = 0;
+ for ( size_t i = 0; i < groups.size(); ++i )
+ {
+ // IDs in XAO correspond to indices of allProjectors
+ std::set<int>::iterator id = groups[i]->begin(), end = groups[i]->end();
+ for ( ; id != end; ++id, ++nbFound )
+ if ( *id < allProjectors.size() )
+ groupProjectors.push_back ( & allProjectors[ *id ]);
+ }
+
+ return nbFound;
+}
