Test for existence of *.sch file so Eeschema does not create a new one.

#include <dialogs/dialog_sch_sheet_props.h>

#include <wildcards_and_files_ext.h>

#include <project.h>

bool SCH_EDIT_FRAME::EditSheet( SCH_SHEET* aSheet, wxDC* aDC )

    // Duplicate sheet names are not valid.

    const SCH_SHEET* sheet = GetScreen()->GetSheet( dlg.GetSheetName() );

    if( (sheet != NULL) && (sheet != aSheet) )

    if( sheet && sheet != aSheet )

    {

        DisplayError( this, wxString::Format( _( "A sheet named \"%s\" already exists." ),

                                              GetChars( dlg.GetSheetName() ) ) );

    bool loadFromFile = false;

    SCH_SCREEN* useScreen = NULL;

    wxString newFullFilename = fileName.GetFullPath();

    // Inside Eeschema, filenames are stored using unix notation

    newFullFilename.Replace( wxT("\\"), wxT("/") );

    wxString newFilename = fileName.GetFullPath();

    // Search for a schematic file having the same filename

    // already in use in the hierarchy or on disk, in order to reuse it.

    if( !g_RootSheet->SearchHierarchy( newFilename, &useScreen ) )

    {

        // if user entered a relative path, allow that to stay, but do the

        // file existence test with an absolute (full) path.  This transformation

        // is local to this scope, but is the same one used at load time later.

        wxString absolute = Prj().AbsolutePath( newFilename );

    // Search for a schematic file having the same filename exists,

    // already in use in the hierarchy, or on disk,

    // in order to reuse it

    if( !g_RootSheet->SearchHierarchy( newFullFilename, &useScreen ) )

        loadFromFile = fileName.FileExists();

        loadFromFile = wxFileExists( absolute );

    }

    // Inside Eeschema, filenames are stored using unix notation

    newFilename.Replace( wxT("\\"), wxT("/") );

    if( aSheet->GetScreen() == NULL )                          // New sheet.

    {

        if( ( useScreen != NULL ) || loadFromFile )            // Load from existing file.

        if( useScreen || loadFromFile )            // Load from existing file.

        {

            if( useScreen != NULL )

            {

                msg.Printf( _( "A file named '%s' already exists in the current schematic hierarchy." ),

                            GetChars( newFullFilename ) );

                            GetChars( newFilename ) );

            }

            else

            {

                msg.Printf( _( "A file named '%s' already exists." ),

                            GetChars( newFullFilename ) );

                            GetChars( newFilename ) );

            }

            msg += _("\n\nDo you want to create a sheet with the contents of this file?" );

        else                                                   // New file.

        {

            aSheet->SetScreen( new SCH_SCREEN( &Kiway() ) );

            aSheet->GetScreen()->SetFileName( newFullFilename );

            aSheet->GetScreen()->SetFileName( newFilename );

        }

    }

    else                                                       // Existing sheet.

        // to avoid issues under Windows, although under Unix

        // filenames are case sensitive.

        // But many users create schematic under both Unix and Windows

        if( newFullFilename.CmpNoCase( aSheet->GetFileName() ) != 0 )

        if( newFilename.CmpNoCase( aSheet->GetFileName() ) != 0 )

        {

            // Sheet file name changes cannot be undone.

            isUndoable = false;

            msg = _( "Changing the sheet file name cannot be undone.  " );

            if( ( useScreen != NULL ) || loadFromFile )        // Load from existing file.

            if( useScreen || loadFromFile )        // Load from existing file.

            {

                wxString tmp;

                if( useScreen != NULL )

                {

                    tmp.Printf( _( "A file named <%s> already exists in the current schematic hierarchy." ),

                                GetChars( newFullFilename ) );

                                GetChars( newFilename ) );

                }

                else

                {

                    tmp.Printf( _( "A file named <%s> already exists." ),

                                GetChars( newFullFilename ) );

                                GetChars( newFilename ) );

                }

                msg += tmp;

        if( renameFile )

        {

            aSheet->GetScreen()->SetFileName( newFullFilename );

            aSheet->GetScreen()->SetFileName( newFilename );

            SaveEEFile( aSheet->GetScreen() );

            // If the the associated screen is shared by more than one sheet, remove the

        }

    }

    aSheet->SetFileName( newFullFilename );

    aSheet->SetFileName( newFilename );

    if( useScreen )

        aSheet->SetScreen( useScreen );