X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fio-1.0.19%2Fodsopen.m;fp=octave_packages%2Fio-1.0.19%2Fodsopen.m;h=3f02ddca55d8b706007c79fd1e7b4e052b00e41b;hp=0000000000000000000000000000000000000000;hb=c880e8788dfc484bf23ce13fa2787f2c6bca4863;hpb=1705066eceaaea976f010f669ce8e972f3734b05

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+## Copyright (C) 2009,2010,2011,2012 Philip Nienhuis <prnienhuis at users.sf.net>
+## 
+## 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 Octave; see the file COPYING.  If not, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} @var{ods} = odsopen (@var{filename})
+## @deftypefnx {Function File} @var{ods} = odsopen (@var{filename}, @var{readwrite})
+## @deftypefnx {Function File} @var{ods} = odsopen (@var{filename}, @var{readwrite}, @var{reqintf})
+## Get a pointer to an OpenOffice_org spreadsheet in the form of return
+## argument @var{ods}.
+##
+## Calling odsopen without specifying a return argument is fairly useless!
+##
+## To make this function work at all, you need the Java package >= 1.2.5 plus
+## ODFtoolkit (version 0.7.5 or 0.8.6+) & xercesImpl, and/or jOpenDocument, and/or
+## OpenOffice.org (or clones) installed on your computer + proper javaclasspath
+## set. These interfaces are referred to as OTK, JOD, and UNO resp., and are
+## preferred in that order by default (depending on their presence).
+## For (currently experimental) UNO support, Octave-Java package 1.2.8 + latest
+## fixes is imperative; furthermore the relevant classes had best be added to
+## the javaclasspath by utility function chk_spreadsheet_support().
+##
+## @var{filename} must be a valid .ods OpenOffice.org file name including
+## .ods suffix. If @var{filename} does not contain any directory path,
+## the file is saved in the current directory.
+## For UNO bridge, filenames need to be in the form "file:///<path_to_file>/filename";
+## a URL will also work. If a plain file name is given (absolute or relative),
+## odsopen() will transform it into proper form.
+##
+## @var{readwrite} must be set to true or numerical 1 if writing to spreadsheet
+## is desired immediately after calling odsopen(). It merely serves proper
+## handling of file errors (e.g., "file not found" or "new file created").
+##
+## Optional input argument @var{reqintf} can be used to override the ODS
+## interface automatically selected by odsopen. Currently implemented interfaces
+## are 'OTK' (Java/ODF Toolkit), 'JOD' (Java/jOpenDocument) and 'UNO'
+## (Java/OpenOffice.org UNO bridge).
+##
+## Examples:
+##
+## @example
+##   ods = odsopen ('test1.ods');
+##   (get a pointer for reading from spreadsheet test1.ods)
+##
+##   ods = odsopen ('test2.ods', [], 'JOD');
+##   (as above, indicate test2.ods will be read from; in this case using
+##    the jOpenDocument interface is requested)
+## @end example
+##
+## @seealso {odsclose, odsread, oct2ods, ods2oct, odsfinfo, chk_spreadsheet_support}
+##
+## @end deftypefn
+
+## Author: Philip Nienhuis
+## Created: 2009-12-13
+## Updates: 
+## 2009-12-30 ....<forgot what is was >
+## 2010-01-17 Make sure proper dimensions are checked in parsed javaclasspath
+## 2010-01-24 Added warning when trying to create a new spreadsheet using jOpenDocument
+## 2010-03-01 Removed check for rt.jar in javaclasspath
+## 2010-03-04 Slight texinfo adaptation (reqd. odfdom version = 0.7.5)
+## 2010-03-14 Updated help text (section on readwrite)
+## 2010-06-01 Added check for jOpenDocument version + suitable warning
+## 2010-06-02 Added ";" to supress debug stuff around lines 115
+##     ''      Moved JOD version check to subfunc getodsinterfaces
+##     ''      Fiddled ods.changed flag when creating a spreadsheet to avoid unnamed 1st sheets
+## 2010-08-23 Added version field "odfvsn" to ods file ptr, set in getodsinterfaces() (odfdom)
+##     ''     Moved JOD version check to this func from subfunc getodsinterfaces()
+##     ''     Full support for odfdom 0.8.6 (in subfunc)
+## 2010-08-27 Improved help text
+## 2010-10-27 Improved tracking of file changes tru ods.changed
+## 2010-11-12 Small changes to help text
+##     ''     Added try-catch to file open sections to create fallback to other intf
+## 2011-05-06 Experimental UNO support
+## 2011-05-18 Creating new spreadsheet docs in UNO now works
+## 2011-06-06 Tamed down interface verbosity on first startup
+##     ''     Multiple requested interfaces now possible 
+## 2011-09-03 Reset chkintf if no ods support was found to allow full interface rediscovery
+##            (otherwise javaclasspath additions will never be picked up)
+## 2012-01-26 Fixed "seealso" help string
+## 2012-02-26 Added ";" to suppress echo of filename f UNO
+## 2012-06-06 Made interface checking routine less verbose when same requested interface
+##            was used consecutively
+##
+## Latest change on subfunctions below: 2012-06-08
+
+function [ ods ] = odsopen (filename, rw=0, reqinterface=[])
+
+  persistent odsinterfaces; persistent chkintf; persistent lastintf;
+  if (isempty (chkintf))
+    odsinterfaces = struct ( "OTK", [], "JOD", [], "UNO", [] );
+    chkintf = 1;
+  endif
+  if (isempty (lastintf)); lastintf = '---'; endif 
+  
+  if (nargout < 1) usage ("ODS = odsopen (ODSfile, [Rw]). But no return argument specified!"); endif
+
+  if (~isempty (reqinterface))
+    if ~(ischar (reqinterface) || iscell (reqinterface)), usage ("Arg # 3 not recognized"); endif
+    # Turn arg3 into cell array if needed
+    if (~iscell (reqinterface)), reqinterface = {reqinterface}; endif
+    ## Check if previously used interface matches a requested interface
+    if (isempty (regexpi (reqinterface, lastintf, 'once'){1}))
+      ## New interface requested
+      odsinterfaces.OTK = 0; odsinterfaces.JOD = 0; odsinterfaces.UNO = 0;
+      for ii=1:numel (reqinterface)
+        reqintf = toupper (reqinterface {ii});
+        # Try to invoke requested interface(s) for this call. Check if it
+        # is supported anyway by emptying the corresponding var.
+        if     (strcmp (reqintf, 'OTK'))
+          odsinterfaces.OTK = [];
+        elseif (strcmp (reqintf, 'JOD'))
+          odsinterfaces.JOD = [];
+        elseif (strcmp (reqintf, 'UNO'))
+          odsinterfaces.UNO = [];
+        else 
+          usage (sprintf ("Unknown .ods interface \"%s\" requested. Only OTK, JOD or UNO supported\n", reqinterface{}));
+        endif
+      endfor
+      printf ("Checking requested interface(s):\n");
+      odsinterfaces = getodsinterfaces (odsinterfaces);
+      # Well, is/are the requested interface(s) supported on the system?
+      # FIXME check for multiple interfaces
+      odsintf_cnt = 0;
+      for ii=1:numel (reqinterface)
+        if (~odsinterfaces.(toupper (reqinterface{ii})))
+          # No it aint
+          printf ("%s is not supported.\n", toupper (reqinterface{ii}));
+        else
+          ++odsintf_cnt;
+        endif
+      endfor
+      # Reset interface check indicator if no requested support found
+      if (~odsintf_cnt)
+        chkintf = [];
+        ods = [];
+        return
+      endif
+    endif
+  endif
+  
+  # Var rw is really used to avoid creating files when wanting to read, or
+  # not finding not-yet-existing files when wanting to write.
+
+  if (rw), rw = 1; endif    # Be sure it's either 0 or 1 initially
+
+  # Check if ODS file exists. Set open mode based on rw argument
+  if (rw), fmode = 'r+b'; else fmode = 'rb'; endif
+  fid = fopen (filename, fmode);
+  if (fid < 0)
+    if (~rw)      # Read mode requested but file doesn't exist
+      err_str = sprintf ("File %s not found\n", filename);
+      error (err_str)
+    else        # For writing we need more info:
+      fid = fopen (filename, 'rb');  # Check if it can be opened for reading
+      if (fid < 0)  # Not found => create it
+        printf ("Creating file %s\n", filename);
+        rw = 3;
+      else      # Found but not writable = error
+        fclose (fid);  # Do not forget to close the handle neatly
+        error (sprintf ("Write mode requested but file %s is not writable\n", filename))
+      endif
+    endif
+  else
+    # close file anyway to avoid Java errors
+    fclose (fid);
+  endif
+
+# Check for the various ODS interfaces. No problem if they've already
+# been checked, getodsinterfaces (far below) just returns immediately then.
+
+  [odsinterfaces] = getodsinterfaces (odsinterfaces);
+
+# Supported interfaces determined; now check ODS file type.
+
+  chk1 = strcmp (tolower (filename(end-3:end)), '.ods');
+  # Only jOpenDocument (JOD) can read from .sxc files, but only if odfvsn = 2
+  chk2 = strcmp (tolower (filename(end-3:end)), '.sxc');
+#  if (~chk1)
+#    error ("Currently ods2oct can only read reliably from .ods files")
+#  endif
+
+  ods = struct ("xtype", [], "app", [], "filename", [], "workbook", [], "changed", 0, "limits", [], "odfvsn", []);
+
+  # Preferred interface = OTK (ODS toolkit & xerces), so it comes first. 
+  # Keep track of which interface is selected. Can be used for fallback to other intf
+  odssupport = 0;
+
+  if (odsinterfaces.OTK && ~odssupport)
+    # Parts after user gfterry in
+    # http://www.oooforum.org/forum/viewtopic.phtml?t=69060
+    odftk = 'org.odftoolkit.odfdom.doc';
+    try
+      if (rw > 2)
+        # New spreadsheet
+        wb = java_invoke ([odftk '.OdfSpreadsheetDocument'], 'newSpreadsheetDocument');
+      else
+        # Existing spreadsheet
+        wb = java_invoke ([odftk '.OdfDocument'], 'loadDocument', filename);
+      endif
+      ods.workbook = wb.getContentDom ();    # Reads the entire spreadsheet
+      ods.xtype = 'OTK';
+      ods.app = wb;
+      ods.filename = filename;
+      ods.odfvsn = odsinterfaces.odfvsn;
+      odssupport += 1;
+      lastintf = 'OTK';
+    catch
+      if (odsinterfaces.JOD && ~rw && chk2)
+        printf ('Couldn''t open file %s using OTK; trying .sxc format with JOD...\n', filename);
+      else
+        error ('Couldn''t open file %s using OTK', filename);
+      endif
+    end_try_catch
+  endif
+
+  if (odsinterfaces.JOD && ~odssupport)
+    file = java_new ('java.io.File', filename);
+    jopendoc = 'org.jopendocument.dom.spreadsheet.SpreadSheet';
+    try
+      if (rw > 2)
+        # Create an empty 2 x 2 default TableModel template
+        tmodel= java_new ('javax.swing.table.DefaultTableModel', 2, 2);
+        wb = java_invoke (jopendoc, 'createEmpty', tmodel);
+      else
+        wb = java_invoke (jopendoc, 'createFromFile', file);
+      endif
+      ods.workbook = wb;
+      ods.filename = filename;
+      ods.xtype = 'JOD';
+      ods.app = 'file';
+      # Check jOpenDocument version. This can only work here when a
+      # workbook has been opened
+      sh = ods.workbook.getSheet (0);
+      cl = sh.getCellAt (0, 0);
+      try
+        # 1.2b3 has public getValueType ()
+        cl.getValueType ();
+        ods.odfvsn = 3;
+      catch
+        # 1.2b2 has not
+        ods.odfvsn = 2;
+        printf ("NOTE: jOpenDocument v. 1.2b2 has limited functionality. Try upgrading to 1.2\n");
+      end_try_catch
+      odssupport += 2;
+      lastintf = 'JOD';
+    catch
+      error ('Couldn''t open file %s using JOD', filename);
+    end_try_catch
+  endif
+
+  if (odsinterfaces.UNO && ~odssupport)
+    # First the file name must be transformed into a URL
+    if (~isempty (strmatch ("file:///", filename)) || ~isempty (strmatch ("http:///", filename))...
+      || ~isempty (strmatch ("ftp:///", filename)) || ~isempty (strmatch ("www:///", filename)))
+      # Seems in proper shape for OOO (at first sight)
+    else
+      # Transform into URL form
+      fname = canonicalize_file_name (strsplit (filename, filesep){end});
+      # On Windows, change backslash file separator into forward slash
+      if (strcmp (filesep, "\\"))
+        tmp = strsplit (fname, filesep);
+        flen = numel (tmp);
+        tmp(2:2:2*flen) = tmp;
+        tmp(1:2:2*flen) = '/';
+        fname = [ tmp{:} ];
+      endif
+      filename = [ 'file://' fname ];
+    endif
+    try
+      xContext = java_invoke ("com.sun.star.comp.helper.Bootstrap", "bootstrap");
+      xMCF = xContext.getServiceManager ();
+      oDesktop = xMCF.createInstanceWithContext ("com.sun.star.frame.Desktop", xContext);
+      # Workaround:
+      unotmp = java_new ('com.sun.star.uno.Type', 'com.sun.star.frame.XComponentLoader');
+      aLoader = oDesktop.queryInterface (unotmp);
+      # Some trickery as Octave Java cannot create non-numeric arrays
+      lProps = javaArray ('com.sun.star.beans.PropertyValue', 1);
+      lProp = java_new ('com.sun.star.beans.PropertyValue', "Hidden", 0, true, []);
+      lProps(1) = lProp;
+      if (rw > 2)
+        xComp = aLoader.loadComponentFromURL ("private:factory/scalc", "_blank", 0, lProps);
+      else
+        xComp = aLoader.loadComponentFromURL (filename, "_blank", 0, lProps);
+      endif
+      # Workaround:
+      unotmp = java_new ('com.sun.star.uno.Type', 'com.sun.star.sheet.XSpreadsheetDocument');
+      # save in ods struct:
+      xSpdoc = xComp.queryInterface (unotmp);
+      ods.workbook = xSpdoc;      # Needed to be able to close soffice in odsclose()
+      ods.filename = filename;
+      ods.xtype = 'UNO';
+      ods.app.xComp = xComp;      # Needed to be able to close soffice in odsclose()
+      ods.app.aLoader = aLoader;  # Needed to be able to close soffice in odsclose()
+      ods.odfvsn = 'UNO';
+      odssupport += 4;
+      lastintf = 'UNO';
+    catch
+      error ('Couldn''t open file %s using UNO', filename);
+    end_try_catch
+  endif
+
+#  if 
+#    <other interfaces here>
+
+  if (~odssupport)
+    printf ("None.\n");
+    warning ("No support for OpenOffice.org .ods I/O"); 
+    ods = [];
+    chkintf = [];
+  else
+    # From here on rw is tracked via ods.changed in the various lower
+    # level r/w routines and it is only used to determine if an informative
+    # message is to be given when saving a newly created ods file.
+    ods.changed = rw;
+
+    # Until something was written to existing files we keep status "unchanged".
+    # ods.changed = 0 (existing/only read from), 1 (existing/data added), 2 (new,
+    # data added) or 3 (pristine, no data added).
+    if (ods.changed == 1) ods.changed = 0; endif
+  endif
+
+endfunction
+
+
+## Copyright (C) 2009,2010,2011,2012 Philip Nienhuis <prnienhuis at users.sf.net>
+## 
+## 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 Octave; see the file COPYING.  If not, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} @var{odsinterfaces} = getodsinterfaces (@var{odsinterfaces})
+## Get supported OpenOffice.org .ods file read/write interfaces from
+## the system.
+## Each interface for which the corresponding field is set to empty
+## will be checked. So by manipulating the fields of input argument
+## @var{odsinterfaces} it is possible to specify which
+## interface(s) should be checked.
+##
+## Currently implemented interfaces comprise:
+## - Java & ODFtoolkit (www.apache.org)
+## - Java & jOpenDocument (www.jopendocument.org)
+## - Java & UNO bridge (OpenOffice.org)
+##
+## Examples:
+##
+## @example
+##   odsinterfaces = getodsinterfaces (odsinterfaces);
+## @end example
+
+## Author: Philip Nienhuis
+## Created: 2009-12-27
+## Updates:
+## 2010-01-14
+## 2010-01-17 Make sure proper dimensions are checked in parsed javaclasspath
+## 2010-04-11 Introduced check on odfdom.jar version - only 0.7.5 works properly
+## 2010-06-02 Moved in check on JOD version
+## 2010-06-05 Experimental odfdom 0.8.5 support
+## 2010-06-## dropped 0.8.5, too buggy
+## 2010-08-22 Experimental odfdom 0.8.6 support
+## 2010-08-23 Added odfvsn (odfdom version string) to output struct argument
+##     ''     Bugfix: moved JOD version check to main function (it can't work here)
+##     ''     Finalized odfdom 0.8.6 support (even prefered version now)
+## 2010-09-11 Somewhat clarified messages about missing java classes
+##     ''     Rearranged code a bit; fixed typos in OTK detection code (odfdvsn -> odfvsn)
+## 2010-09-27 More code cleanup
+## 2010-11-12 Warning added about waning support for odfdom v. 0.7.5
+## 2011-05-06 Fixed wrong strfind tests
+##     ''     Experimental UNO support added
+## 2011-05-18 Forgot to initialize odsinterfaces.UNO
+## 2011-06-06 Fix for javaclasspath format in *nix w. java-1.2.8 pkg
+##     ''     Implemented more rigid Java check
+##     ''     Tamed down verbosity
+## 2011-09-03 Fixed order of odsinterfaces.<member> statement in Java detection try-catch
+##     ''     Reset tmp1 (always allow interface rediscovery) for empty odsinterfaces arg
+## 2011-09-18 Added temporary warning about UNO interface
+## 2012-03-22 Improved Java checks (analogous to xlsopen)
+## 2012-06-06 Again improved & simplified Java-based interface checking support
+## 2012-06-08 Support for odfdom-0.8.8 (-incubator)
+
+function [odsinterfaces] = getodsinterfaces (odsinterfaces)
+
+  # tmp1 = [] (not initialized), 0 (No Java detected), or 1 (Working Java found)
+  persistent tmp1 = []; persistent jcp;  # Java class path
+  persistent uno_1st_time = 0;
+
+  if (isempty (odsinterfaces.OTK) && isempty (odsinterfaces.JOD) && isempty (odsinterfaces.UNO))
+    # Assume no interface detection has happened yet
+    printf ("Detected ODS interfaces: ");
+    tmp1 = [];
+  elseif (isempty (odsinterfaces.OTK) || isempty (odsinterfaces.JOD) || isempty (odsinterfaces.UNO))
+    # Can't be first call. Here one of the Java interfaces is requested
+    if (~tmp1)
+      # Check Java support again
+      tmp1 = [];
+    endif
+  endif
+  deflt = 0;
+
+  if (isempty (tmp1))
+  # Check Java support
+    try
+      jcp = javaclasspath ("-all");          # For java pkg >= 1.2.8
+      if (isempty (jcp)), jcp = javaclasspath; endif  # For java pkg <  1.2.8
+      # If we get here, at least Java works. Now check for proper version (>= 1.6)
+      jver = char (java_invoke ('java.lang.System', 'getProperty', 'java.version'));
+      cjver = strsplit (jver, '.');
+      if (sscanf (cjver{2}, '%d') < 6)
+        warning ("\nJava version too old - you need at least Java 6 (v. 1.6.x.x)\n");
+        return
+      endif
+      # Now check for proper entries in class path. Under *nix the classpath
+      # must first be split up. In java 1.2.8+ javaclasspath is already a cell array
+      if (isunix && ~iscell (jcp)), jcp = strsplit (char (jcp), pathsep ()); endif
+      tmp1 = 1;
+    catch
+      # No Java support
+      tmp1 = 0;
+      if (isempty (odsinterfaces.OTK) || isempty (odsinterfaces.JOD) || isempty (odsinterfaces.UNO))
+        # Some or all Java-based interface explicitly requested; but no Java support
+        warning (' No Java support found (no Java JRE? no Java pkg installed AND loaded?');
+      endif
+      # No specific Java-based interface requested. Just return
+      odsinterfaces.OTK = 0;
+      odsinterfaces.JOD = 0;
+      odsinterfaces.UNO = 0;
+      printf ("\n");
+      return;
+    end_try_catch
+  endif
+
+  # Try Java & ODF toolkit
+  if (isempty (odsinterfaces.OTK))
+    odsinterfaces.OTK = 0;
+    jpchk = 0; entries = {"odfdom", "xercesImpl"};
+    # Only under *nix we might use brute force: e.g., strfind(classpath, classname);
+    # under Windows we need the following more subtle, platform-independent approach:
+    for ii=1:length (jcp)
+      for jj=1:length (entries)
+        if (~isempty (strfind ( jcp{ii}, entries{jj}))), ++jpchk; endif
+      endfor
+    endfor
+    if (jpchk >= numel(entries))    # Apparently all requested classes present.
+      # Only now we can check for proper odfdom version (only 0.7.5 & 0.8.6 work OK).
+      # The odfdom team deemed it necessary to change the version call so we need this:
+      odfvsn = ' ';
+      try
+        # New in 0.8.6
+        odfvsn = java_invoke ('org.odftoolkit.odfdom.JarManifest', 'getOdfdomVersion');
+      catch
+        odfvsn = java_invoke ('org.odftoolkit.odfdom.Version', 'getApplicationVersion');
+      end_try_catch
+      # For odfdom-incubator, strip extra info
+      odfvsn = regexp (odfvsn, '\d\.\d\.\d', "match"){1};
+      if ~(strcmp  (odfvsn, "0.7.5") || strcmp (odfvsn, "0.8.6") || strcmp (odfvsn, "0.8.7")
+        || strfind (odfvsn, "0.8.8"))
+        warning ("\nodfdom version %s is not supported - use v. 0.8.6 or later\n", odfvsn);
+      else
+        if (strcmp (odfvsn, '0.7.5'))
+          warning ("odfdom v. 0.7.5 support won't be maintained - please upgrade to 0.8.6 or higher."); 
+        endif
+        odsinterfaces.OTK = 1;
+        printf ("OTK");
+        if (deflt), printf ("; "); else, printf ("*; "); deflt = 1; endif
+      endif
+      odsinterfaces.odfvsn = odfvsn;
+    else
+      warning ("\nNot all required classes (.jar) in classpath for OTK");
+    endif
+  endif
+
+  # Try Java & jOpenDocument
+  if (isempty (odsinterfaces.JOD))
+    odsinterfaces.JOD = 0;
+    jpchk = 0; entries = {"jOpenDocument"};
+    for ii=1:length (jcp)
+      for jj=1:length (entries)
+        if (~isempty (strfind (jcp{ii}, entries{jj}))), ++jpchk; endif
+      endfor
+    endfor
+    if (jpchk >= numel(entries))
+      odsinterfaces.JOD = 1;
+      printf ("JOD");
+      if (deflt), printf ("; "); else, printf ("*; "); deflt = 1; endif
+    else
+      warning ("\nNot all required classes (.jar) in classpath for JOD");
+    endif
+  endif
+
+  # Try Java & UNO
+  if (isempty (odsinterfaces.UNO))
+    odsinterfaces.UNO = 0;
+    # entries(1) = not a jar but a directory (<000_install_dir/program/>)
+    jpchk = 0; entries = {'program', 'unoil', 'jurt', 'juh', 'unoloader', 'ridl'};
+    for jj=1:numel (entries)
+      for ii=1:numel (jcp)
+        jcplst = strsplit (jcp{ii}, filesep);
+        jcpentry = jcplst {end};
+        if (~isempty (strfind (lower (jcpentry), lower (entries{jj}))))
+          jpchk = jpchk + 1;
+        endif
+      endfor
+    endfor
+    if (jpchk >= numel (entries))
+      odsinterfaces.UNO = 1;
+      printf ("UNO");
+      if (deflt), printf ("; "); else, printf ("*; "); deflt = 1; uno_1st_time = min (++uno_1st_time, 2); endif
+    else
+      warning ("\nOne or more UNO classes (.jar) missing in javaclasspath");
+    endif
+  endif
+  
+  # ---- Other interfaces here, similar to the ones above
+
+  if (deflt), printf ("(* = active interface)\n"); endif
+
+  ## FIXME the below stanza should be dropped once UNO is stable.
+  # Echo a suitable warning about experimental status:
+  if (uno_1st_time == 1)
+    ++uno_1st_time;
+    printf ("\nPLEASE NOTE: UNO (=OpenOffice.org-behind-the-scenes) is EXPERIMENTAL\n");
+    printf ("After you've opened a spreadsheet file using the UNO interface,\n");
+    printf ("odsclose on that file will kill ALL OpenOffice.org invocations,\n");
+    printf ("also those that were started outside and/or before Octave!\n");
+    printf ("Trying to quit Octave w/o invoking odsclose will only hang Octave.\n\n");
+  endif
+  
+endfunction