PsiHDF_im_export.C

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/* Gnome gxsm - Gnome X Scanning Microscopy
 * universal STM/AFM/SARLS/SPALEED/... controlling and
 * data analysis software
 *
 * Gxsm Plugin Name: PsiHDF_im_export.C
 * ========================================
 * 
 * Copyright (C) 1999 The Free Software Foundation
 *
 * Authors: Percy Zahl <zahl@fkp.uni-hannover.de>
 * additional features: Andreas Klust <klust@fkp.uni-hannover.de>
 *
 * This program 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

/* Please do not change the Begin/End lines of this comment section!
 * this is a LaTeX style section used for auto generation of the PlugIn Manual 
 * Chapter. Add a complete PlugIn documentation inbetween the Begin/End marks!
 * --------------------------------------------------------------------------------
% BeginPlugInDocuSection
% PlugInDocuCaption: Park Scientific (HDF) data Import
% PlugInName: PsiHDF_im_export
% PlugInAuthor: Percy Zahl
% PlugInAuthorEmail: zahl@users.sf.net
% PlugInMenuPath: File/Import/PsiHDF

% PlugInDescription
\label{plugins:PsiHDF_im_export}
The \GxsmEmph{PsiHDF\_im\_export} plug-in supports reading of
Psi-HDFe files used by Park-Scientific AFM.

% PlugInUsage
The plug-in is called by \GxsmMenu{File/Import/PsiHDF}.

% OptPlugInKnownBugs
Not yet tested, porting to GXSM-2 in progress..

% EndPlugInDocuSection
 * -------------------------------------------------------------------------------- 
 */

#include <gtk/gtk.h>
#include "config.h"
#include "gxsm/plugin.h"
#include "gxsm/dataio.h"
#include "gxsm/action_id.h"
#include "gxsm/util.h"
#include "batch.h"
#include "fileio.c"
#include "psihdf.h"

using namespace std;

#define IMGMAXCOLORS 64

// Plugin Prototypes
static void PsiHDF_im_export_init (void);
static void PsiHDF_im_export_query (void);
static void PsiHDF_im_export_about (void);
static void PsiHDF_im_export_configure (void);
static void PsiHDF_im_export_cleanup (void);

static void PsiHDF_im_export_filecheck_load_callback (gpointer data );
static void PsiHDF_im_export_filecheck_save_callback (gpointer data );

static void PsiHDF_im_export_import_callback (GtkWidget *w, void *data);
static void PsiHDF_im_export_export_callback (GtkWidget *w, void *data);

// Fill in the GxsmPlugin Description here
GxsmPlugin PsiHDF_im_export_pi = {
  NULL,                   // filled in and used by Gxsm, don't touch !
  NULL,                   // filled in and used by Gxsm, don't touch !
  0,                      // filled in and used by Gxsm, don't touch !
  NULL,                   // The Gxsm-App Class Ref.pointer (called "gapp" in Gxsm) is 
                          // filled in here by Gxsm on Plugin load, 
                          // just after init() is called !!!
  "PsiHDF-ImExport",
  NULL,                   // PlugIn's Categorie, set to NULL for all, I just don't want this always to be loaded!
  // Description, is shown by PluginViewer (Plugin: listplugin, Tools->Plugin Details)
  "Im/Export of PsiHDF file format.",
  "Percy Zahl",
  N_("_File/_Import/,_File/_Export/"),
  N_("PsiHDF,PsiHDF"),
  N_("PsiHDF import,PsiHDF export"),
  N_("Park Scientific HDF import and export filter."),
  NULL,          // error msg, plugin may put error status msg here later
  NULL,          // Plugin Status, managed by Gxsm, plugin may manipulate it too
  PsiHDF_im_export_init,
  PsiHDF_im_export_query,
  // about-function, can be "NULL"
  // can be called by "Plugin Details"
  PsiHDF_im_export_about,
  // configure-function, can be "NULL"
  // can be called by "Plugin Details"
  PsiHDF_im_export_configure,
  // run-function, can be "NULL", if non-Zero and no query defined, 
  // it is called on menupath->"plugin"
  NULL,
  // cleanup-function, can be "NULL"
  // called if present at plugin removeal
  PsiHDF_im_export_cleanup
};

// Text used in Aboutbox, please update!!
static const char *about_text = N_("This GXSM plugin allows im- and export of the Park Scientifi HDF file format"
                                   " "
        );

static const char *file_mask = "*.hdf";

// Symbol "get_gxsm_plugin_info" is resolved by dlsym from Gxsm, used to get Plugin's info!! 
// Essential Plugin Function!!
GxsmPlugin *get_gxsm_plugin_info ( void ){ 
  PsiHDF_im_export_pi.description = g_strdup_printf(N_("Gxsm im_export plugin %s"), VERSION);
  return &PsiHDF_im_export_pi; 
}

// Query Function, installs Plugin's in File/Import and Export Menupaths!
// ----------------------------------------------------------------------
// Import Menupath is "File/Import/GME Dat"
// Export Menupath is "File/Export/GME Dat"
// ----------------------------------------------------------------------
// !!!! make sure the "PsiHDF_im_export_cleanup()" function (see below) !!!!
// !!!! removes the correct menuentries !!!!

static void PsiHDF_im_export_query(void)
{
        gchar **path  = g_strsplit ( PsiHDF_im_export_pi.menupath, ",", 2);
        gchar **entry = g_strsplit ( PsiHDF_im_export_pi.menuentry, ",", 2);
        gchar **help  = g_strsplit ( PsiHDF_im_export_pi.help, ",", 2);

        static GnomeUIInfo menuinfo_i[] = { 
                { GNOME_APP_UI_ITEM, NULL, NULL,
                  NULL, NULL,
                  NULL, GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_OPEN,
                  0, GDK_CONTROL_MASK, NULL },
                GNOMEUIINFO_END
        };
        menuinfo_i[0].label  = entry[0];
        menuinfo_i[0].hint   = help[0];
        menuinfo_i[0].moreinfo  = (gpointer) PsiHDF_im_export_import_callback; 
        menuinfo_i[0].user_data = PsiHDF_im_export_pi.name;

        gnome_app_insert_menus (
                GNOME_APP(PsiHDF_im_export_pi.app->getApp()), 
                path[0], 
                menuinfo_i
                );
        

        static GnomeUIInfo menuinfo_e[] = { 
                { GNOME_APP_UI_ITEM, NULL, NULL,
                  NULL, NULL,
                  NULL, GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_SAVE,
                  0, GDK_CONTROL_MASK, NULL },
                GNOMEUIINFO_END
        };
        menuinfo_e[0].label  = entry[1];
        menuinfo_e[0].hint   = help[1];
        menuinfo_e[0].moreinfo  = (gpointer) PsiHDF_im_export_export_callback; 
        menuinfo_e[0].user_data = PsiHDF_im_export_pi.name;

        gnome_app_insert_menus (
                GNOME_APP(PsiHDF_im_export_pi.app->getApp()), 
                path[1],
                menuinfo_e
                );

        if(PsiHDF_im_export_pi.status) g_free(PsiHDF_im_export_pi.status); 
        PsiHDF_im_export_pi.status = g_strconcat (
                N_("Plugin query has attached "),
                PsiHDF_im_export_pi.name, 
                N_(": File IO Filters are ready to use."),
                NULL);
        
        // clean up
        g_strfreev (path);
        g_strfreev (entry);
        g_strfreev (help);

        // register this plugins filecheck functions with Gxsm now!
        // This allows Gxsm to check files from DnD, open, 
        // and cmdline sources against all known formats automatically - no explicit im/export is necessary.
        PsiHDF_im_export_pi.app->ConnectPluginToLoadFileEvent (PsiHDF_im_export_filecheck_load_callback);
        PsiHDF_im_export_pi.app->ConnectPluginToSaveFileEvent (PsiHDF_im_export_filecheck_save_callback);
}


// 5.) Start here with the plugins code, vars def., etc.... here.
// ----------------------------------------------------------------------
//


// init-Function
static void PsiHDF_im_export_init(void)
{
        PI_DEBUG (DBG_L2, PsiHDF_im_export_pi.name << "Plugin Init");
}

// about-Function
static void PsiHDF_im_export_about(void)
{
        const gchar *authors[] = { PsiHDF_im_export_pi.authors, NULL};
        gtk_widget_show(gnome_about_new ( PsiHDF_im_export_pi.name,
                                          VERSION,
                                          N_("(C) 2001 the Free Software Foundation"),
                                          about_text,
                                          authors,
                                          NULL, NULL, NULL
                                          ));
}

// configure-Function
static void PsiHDF_im_export_configure(void)
{
        if(PsiHDF_im_export_pi.app)
                PsiHDF_im_export_pi.app->message("PsiHDF_im_export Plugin Configuration");
}

// cleanup-Function, make sure the Menustrings are matching those above!!!
static void PsiHDF_im_export_cleanup(void)
{
        gchar **path  = g_strsplit (PsiHDF_im_export_pi.menupath, ",", 2);
        gchar **entry = g_strsplit (PsiHDF_im_export_pi.menuentry, ",", 2);

        gchar *tmp = g_strconcat (path[0], entry[0], NULL);
        gnome_app_remove_menus (GNOME_APP (PsiHDF_im_export_pi.app->getApp()), tmp, 1);
        g_free (tmp);

        tmp = g_strconcat (path[1], entry[1], NULL);
        gnome_app_remove_menus (GNOME_APP (PsiHDF_im_export_pi.app->getApp()), tmp, 1);
        g_free (tmp);

        g_strfreev (path);
        g_strfreev (entry);

        PI_DEBUG (DBG_L2, "Plugin Cleanup done.");
}

// make a new derivate of the base class "Dataio"
class PsiHDF_ImExportFile : public Dataio{
public:
        PsiHDF_ImExportFile(Scan *s, const char *n) : Dataio(s,n){ };
        virtual FIO_STATUS Read();
        virtual FIO_STATUS Write();
private:
        FIO_STATUS import(const char *fname);
        int numDD;  // number of data descriptors
};

FIO_STATUS PsiHDF_ImExportFile::Read(){
        FIO_STATUS ret;
        gchar *fname=NULL;

        fname = (gchar*)name;

        // name should have at least 4 chars: ".ext"
        if (fname == NULL || strlen(fname) < 4)
                return  FIO_NOT_RESPONSIBLE_FOR_THAT_FILE;
 
        // check for file exists and is OK !
        // else open File Dlg
        ifstream f;
        f.open(fname, ios::in);
        if(!f.good()){
                PI_DEBUG (DBG_L2, "File Fehler");
                return status=FIO_OPEN_ERR;
        }
        f.close();

        // Check all known File Types:
        
        // is this a PsiHDF file?
        if ((ret=import (fname)) !=  FIO_NOT_RESPONSIBLE_FOR_THAT_FILE)
                return ret;

        return  FIO_NOT_RESPONSIBLE_FOR_THAT_FILE;
}

//=======================================================================
//
// PsiHDF  -   HDF-Format von Park Scientific Instr.
//
// up to now only reading of HDF implemented
//
//=======================================================================
FIO_STATUS PsiHDF_ImExportFile::import(const char *fname){
        ifstream f;
        gchar *tmp = NULL;
        GString *FileList=NULL;

        f.open(name, ios::in);
        if (!f.good())
                return status=FIO_OPEN_ERR;

        // check some magics of this type...
        if (TRUE){
                f.close ();
                return FIO_NOT_RESPONSIBLE_FOR_THAT_FILE;
        }
        
        time_t t; // Scan - Startzeit eintragen 
        time(&t);
        tmp = g_strconcat ((ctime(&t)), " (Imported)", NULL); scan->data.ui.SetDateOfScan (tmp); g_free (tmp);
        scan->data.ui.SetName (fname);
        scan->data.ui.SetOriginalName (fname);
        scan->data.ui.SetType ("old dat"); 


        // this is mandatory.
        scan->data.s.ntimes  = 1;
        scan->data.s.nvalues = 1;
  
  
        // put some usefull values in the ui structure
        if(getlogin()){
                scan->data.ui.SetUser (getlogin());
        }
        else{
                scan->data.ui.SetUser ("unkonwn user");
        }

        // initialize scan structure -- this is a minimum example
        scan->data.s.nx = 1;
        scan->data.s.ny = 1;
        scan->data.s.dx = 1;
        scan->data.s.dy = 1;
        scan->data.s.dz = 1;
        scan->data.s.rx = scan->data.s.nx;
        scan->data.s.ry = scan->data.s.ny;
        scan->data.s.x0 = 0;
        scan->data.s.y0 = 0;
        scan->data.s.alpha = 0;

        // be nice and reset this to some defined state
        scan->data.display.cpshigh       = 1e3;
        scan->data.display.cpslow        = 1.;
        scan->data.display.cnttime       = 1.;

        // set the default view parameters
        scan->data.display.bright = 32.;
        scan->data.display.contrast = 1.0;

        // FYI: (PZ)
        //  scan->data.display.vrange_z  = ; // View Range Z in base ZUnits
        //  scan->data.display.voffset_z = 0; // View Offset Z in base ZUnits
        //  scan->AutoDisplay([...]); // may be used too...
  

        FileList = g_string_new ("Imported by GXSM from old dat filetype.\n");
        g_string_sprintfa (FileList, "Original Filename: %s\n", fname);
//      g_string_append (FileList, "blaa\n");
        
        int magic;
        PsiHEADER header;

        f.open(name, std::ios::in);
        if(!f.good())
                return status=FIO_OPEN_ERR;

        // get magic number
        f.seekg(0, std::ios::beg);
        f.read((char*)(&magic), 4);
  
        if (magic != HDF_MAGIC_NUM)  {
                XSM_DEBUG_ERROR (DBG_L1, "PsiHDF: wrong magic number! (magic = " << magic << " )");
                return FIO_READ_ERR;
        }
  
        // read PSI binary Header
        f.seekg(PSI_HEADER_OFFSET, std::ios::beg);
        f.read((char*)&header, sizeof(PsiHEADER));
        // dirty hack to correct differences in the behavior of 16 and 32bit architectures:
        // under Linux, 32bit variables like int or float are moved to the beginning
        // of a 32bit segment.  unfortunately there are an odd number of shorts before the
        // float header.fXScansize :-(  This is corrected by the following hack:  the header
        // is read two times 
# define XOFFS(X) ((char*)(&X) - (char*)(&header))
        f.seekg(PSI_HEADER_OFFSET + XOFFS(header.fXScanSize) + 2, std::ios::beg);
        f.read((char*)&header.fXScanSize, sizeof(PsiHEADER) - XOFFS(header.fXScanSize));

        if(f.fail()){
                f.close();
                return status=FIO_READ_ERR; 
        }

        /* grrrrrrrrrr
           XSM_DEBUG_ERROR (DBG_L1,  "PsiHDF: source: " << header.szSourceName );
           XSM_DEBUG_ERROR (DBG_L1,  "PsiHDF: mode: " << header.szImageMode );
           XSM_DEBUG_ERROR (DBG_L1,  "PsiHDF: image size: " << header.nCols << " x " << header.nRows );
           XSM_DEBUG_ERROR (DBG_L1,  "PsiHDF: scan size in um: " << header.fXScanSize << " x " << header.fYScanSize );
           XSM_DEBUG_ERROR (DBG_L1,  "PsiHDF: setpoint unit: " << header.szSetPointUnit );
           XSM_DEBUG_ERROR (DBG_L1,  "PsiHDF: scan rate: " << header.fScanRate );
           XSM_DEBUG_ERROR (DBG_L1,  "PsiHDF: data min: " << header.nDataMin << " max: " << header.nDataMax );

           char dum[4];
           f.seekg(0x03e2, std::ios::beg);
           f.read(dum, 4);
           XSM_DEBUG_ERROR (DBG_L1,  "dum: " << (int)dum[0] << " " << (int)dum[1] << " " << (int)dum[2] << " " << (int)dum[3] );
           XSM_DEBUG_ERROR (DBG_L1,  "dum: " << *((float*)dum) );
           f.seekg(0x03e6, std::ios::beg);
           f.read(dum, 4);
           XSM_DEBUG_ERROR (DBG_L1,  "dum: " << (int)dum[0] << " " << (int)dum[1] << " " << (int)dum[2] << " " << (int)dum[3] );
           XSM_DEBUG_ERROR (DBG_L1,  "dum: " << *((float*)dum) );
           XSM_DEBUG_ERROR (DBG_L1,  "dum size " << (int)((char*)&header.fXScanSize)[0] << " " << (int)((char*)&header.fXScanSize)[1] << " " << (int)((char*)&header.fXScanSize)[2] << " " << (int)((char*)&header.fXScanSize)[3] );
           XSM_DEBUG_ERROR (DBG_L1,  "dum size " << (int)((char*)&header.fYScanSize)[0] << " " << (int)((char*)&header.fYScanSize)[1] << " " << (int)((char*)&header.fYScanSize)[2] << " " << (int)((char*)&header.fYScanSize)[3] );
           XSM_DEBUG_ERROR (DBG_L1,  "sizeof(HEADER): " << sizeof(header) );
           XSM_DEBUG_ERROR (DBG_L1,  "offs header.nCols " << XOFFS(header.nCols) );
           XSM_DEBUG_ERROR (DBG_L1,  "offs header.nRows " << XOFFS(header.nRows) );
           XSM_DEBUG_ERROR (DBG_L1,  "offs header.dummy " << XOFFS(header.dummy) );
           XSM_DEBUG_ERROR (DBG_L1,  "offs header.fLowPass " << XOFFS(header.fLowPass) );
           XSM_DEBUG_ERROR (DBG_L1,  "offs header.b3rdOrder " << XOFFS(header.b3rdOrder) );
           XSM_DEBUG_ERROR (DBG_L1,  "offs header.bAutoFlatten " << XOFFS(header.bAutoFlatten) );
           XSM_DEBUG_ERROR (DBG_L1,  "offs header.fXScanSize " << XOFFS(header.fXScanSize) << " " << XOFFS(header.fYScanSize) );
        */

        // convert PSI header information to scan data
        // values in PSI header are in um, xxsm data has to be in Angstrom!
        scan->data.s.nx = header.nCols;
        scan->data.s.ny = header.nRows;
        scan->data.s.dx = header.fXScanSize * 10000. / header.nCols;
        scan->data.s.dy = header.fYScanSize * 10000. / header.nRows;
        scan->data.s.dz = header.fDataGain * 10000.;
        scan->data.s.rx = scan->data.s.nx*scan->data.s.dx;
        scan->data.s.ry = scan->data.s.ny*scan->data.s.dy;
        scan->data.s.x0 = header.fXOffset * 10000.;
        scan->data.s.y0 = header.fYOffset * 10000.;
        scan->data.s.alpha = 0;
        scan->data.ui.SetUser ("PSI SXM");
        tmp = g_strconcat ("PSI Mode: ", header.szImageMode, ", Source: ", header.szSourceName, NULL);
        scan->data.ui.SetComment (tmp);
        g_free (tmp);
  
        // read the data
        scan->mem2d->Resize (scan->data.s.nx, scan->data.s.ny);
        f.seekg (FILE_HEADER_SIZE, std::ios::beg);
        scan->mem2d->DataRead (f);

        scan->data.orgmode = SCAN_ORG_CENTER;
        scan->mem2d->data->MkXLookup (-scan->data.s.rx/2., scan->data.s.rx/2.);
        scan->mem2d->data->MkYLookup (-scan->data.s.ry/2., scan->data.s.ry/2.);

        if(f.fail()){
                f.close();
                return status=FIO_READ_ERR; 
        }






        scan->data.ui.SetComment (FileList->str);
        g_string_free(FileList, TRUE); 
        FileList=NULL;

        scan->data.s.dx = scan->data.s.rx / scan->data.s.nx;
        scan->data.s.dy = scan->data.s.ry / scan->data.s.ny;

        // convert to Ang
//      scan->data.s.x0 *= pzAV_x / 32767.*10. * gx ;
//      scan->data.s.y0 *= pzAV_y / 32767.*10. * gy ;

        // Read Img Data.
        
        scan->mem2d->Resize(scan->data.s.nx, scan->data.s.ny);
        scan->mem2d->DataRead(f, 1);

        scan->data.orgmode = SCAN_ORG_CENTER;
        scan->mem2d->data->MkXLookup (-scan->data.s.rx/2., scan->data.s.rx/2.);
        scan->mem2d->data->MkYLookup (-scan->data.s.ry/2., scan->data.s.ry/2.);

  
        return FIO_OK; 
}


FIO_STATUS PsiHDF_ImExportFile::Write(){

        GtkWidget *dialog = gtk_message_dialog_new (NULL,
                                                    GTK_DIALOG_DESTROY_WITH_PARENT,
                                                    GTK_MESSAGE_INFO,
                                                    GTK_BUTTONS_OK,
                                                    N_("Sorry, not yet implemented.")
                                                    );
        gtk_dialog_run (GTK_DIALOG (dialog));
        gtk_widget_destroy (dialog);

#if 0
        gchar tmp[0x4004];
        const gchar *fname;
        ofstream f;

        memset (tmp, 0, sizeof (tmp));

        if(strlen(name)>0)
                fname = (const char*)name;
        else
                fname = gapp->file_dialog("File Export: PsiHDF"," ","*.hdf","","PsiHDF write");
        if (fname == NULL) return FIO_NO_NAME;

        // check if we like to handle this
        if (strncmp(fname+strlen(fname)-4,".hdf",4))
                return FIO_NOT_RESPONSIBLE_FOR_THAT_FILE;


        f.open(name, ios::out);
        if (!f.good())
                return status=FIO_OPEN_ERR;

//      scan->mem2d->DataWrite(f);


        int pcnt=0;
        std::ofstream f;
    
        f.open(name, std::ios::out | std::ios::trunc);
        if(!f.good())
                return status=FIO_OPEN_ERR;

        f.seekp(0, std::ios::beg); // Auf Headerstart Positionieren

        // Kopf erstellen
        scan->data.ui.SetName (name);
        Kopf.ScMode    = TopoGraphic;
        Kopf.Kennung   = 0xABCE; /* NEU !!, alt=0xABCD */
        if(strlen(scan->data.ui.user) > 39)
                XSM_SHOW_ALERT(HINT_WARN, HINT_UNAME_TRUNC, " ", 0);
        if(strlen(scan->data.ui.comment) > 255)
                XSM_SHOW_ALERT(HINT_WARN, HINT_COMMENT_TRUNC, " ", 0);
        strncpy(Kopf.UserName, scan->data.ui.user, 39);
        strncpy(Kopf.comment, scan->data.ui.comment, 255);
        Kopf.nx[pcnt] = scan->data.s.nx;
        Kopf.ny[pcnt] = scan->data.s.ny;
        //* ....->Inst wird nur wegen dat-Type benötigt .... :=(
 Kopf.dx[pcnt] = R2INT(scan->data.s.dx/gapp->xsm->Inst->XResolution());
        Kopf.dy[pcnt] = R2INT(scan->data.s.dy/gapp->xsm->Inst->YResolution());
        Kopf.x_Offset[pcnt] = R2INT(scan->data.s.x0/gapp->xsm->Inst->XResolution());
        Kopf.y_Offset[pcnt] = R2INT(scan->data.s.y0/gapp->xsm->Inst->XResolution());
        Kopf.DAtoAng_X = gapp->xsm->Inst->XResolution();
        Kopf.DAtoAng_Y = gapp->xsm->Inst->YResolution();
        Kopf.DAtoAng_Z = gapp->xsm->Inst->ZResolution();
        Kopf.Rotation  = (short)(rint(scan->data.s.alpha));
        Kopf.brightfac = scan->data.display.bright;
        Kopf.greyfac   = VRangeZ_to_Contrast (scan->data.display.vrange_z, scan->data.s.dz);
//  Kopf.linefac   = scan->data.display.gamma;
        Kopf.forw_delay=10L;
        Kopf.back_delay=10L;
        Kopf.NumOfTopAve=1;
        // Kopf noch nicht vollständig ausgefüllt !

        f.write((const char*)&Kopf, sizeof(HEADER));
        if(f.fail()){
                f.close();
                return status=FIO_WRITE_ERR; 
        }

        scan->mem2d->DataWrite(f);

        if(f.fail()){
                f.close();
                return status=FIO_WRITE_ERR; 
        }
        f.close();



#endif
  return FIO_OK; 
}

// Plugin's Notify Cb's, registered to be called on file load/save to check file
// return via filepointer, it is set to Zero or passed as Zero if file has been processed!
// That's all fine, you should just change the Text Stings below...


static void PsiHDF_im_export_filecheck_load_callback (gpointer data ){
        gchar **fn = (gchar**)data;
        if (*fn){
                PI_DEBUG (DBG_L2, 
                          "Check File: PsiHDF_im_export_filecheck_load_callback called with >"
                          << *fn << "<" );

                Scan *dst = gapp->xsm->GetActiveScan();
                if(!dst){ 
                        gapp->xsm->ActivateFreeChannel();
                        dst = gapp->xsm->GetActiveScan();
                }
                PsiHDF_ImExportFile fileobj (dst, *fn);

                FIO_STATUS ret = fileobj.Read(); 
                if (ret != FIO_OK){ 
                        // I'am responsible! (But failed)
                        if (ret != FIO_NOT_RESPONSIBLE_FOR_THAT_FILE)
                                *fn=NULL;
                        // no more data: remove allocated and unused scan now, force!
                        gapp->xsm->SetMode(-1, ID_CH_M_OFF, TRUE); 
                        PI_DEBUG (DBG_L2, "Read Error " << ((int)ret) << "!!!!!!!!" );
                }else{
                        // got it!
                        *fn=NULL;

                        // Now update gxsm main window data fields
                        gapp->xsm->ActiveScan->GetDataSet(gapp->xsm->data);
                        gapp->spm_update_all();
                        dst->draw();
                }
        }else{
                PI_DEBUG (DBG_L2, "PsiHDF_im_export_filecheck_load: Skipping" );
        }
}

static void PsiHDF_im_export_filecheck_save_callback (gpointer data ){
        gchar **fn = (gchar**)data;
        if (*fn){
                Scan *src;
                PI_DEBUG (DBG_L2,
                          "Check File: PsiHDF_im_export_filecheck_save_callback called with >"
                          << *fn << "<" );

                PsiHDF_ImExportFile fileobj (src = gapp->xsm->GetActiveScan(), *fn);

                FIO_STATUS ret;
                ret = fileobj.Write(); 

                if(ret != FIO_OK){
                        // I'am responsible! (But failed)
                        if (ret != FIO_NOT_RESPONSIBLE_FOR_THAT_FILE)
                                *fn=NULL;
                        PI_DEBUG (DBG_L2, "Write Error " << ((int)ret) << "!!!!!!!!" );
                }else{
                        // write done!
                        *fn=NULL;
                }
        }else{
                PI_DEBUG (DBG_L2, "PsiHDF_im_export_filecheck_save: Skipping >" << *fn << "<" );
        }
}

// Menu Call Back Fkte

static void PsiHDF_im_export_import_callback(GtkWidget *w, void *data){
        gchar **help = g_strsplit (PsiHDF_im_export_pi.help, ",", 2);
        gchar *dlgid = g_strconcat (PsiHDF_im_export_pi.name, "-import", NULL);
        gchar *fn = gapp->file_dialog(help[0], NULL, file_mask, NULL, dlgid);
        g_strfreev (help); 
        g_free (dlgid);
        PsiHDF_im_export_filecheck_load_callback (&fn );
}

static void PsiHDF_im_export_export_callback(GtkWidget *w, void *data){
        gchar **help = g_strsplit (PsiHDF_im_export_pi.help, ",", 2);
        gchar *dlgid = g_strconcat (PsiHDF_im_export_pi.name, "-export", NULL);
        gchar *fn = gapp->file_dialog(help[1], NULL, file_mask, NULL, dlgid);
        g_strfreev (help); 
        g_free (dlgid);
        PsiHDF_im_export_filecheck_save_callback (&fn );
}

---