--- /dev/null
+## 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{xls} = xlsopen (@var{filename})
+## @deftypefnx {Function File} @var{xls} = xlsopen (@var{filename}, @var{readwrite})
+## @deftypefnx {Function File} @var{xls} = xlsopen (@var{filename}, @var{readwrite}, @var{reqintf})
+## Get a pointer to an Excel spreadsheet in the form of return argument
+## (file pointer struct) @var{xls}. After processing the spreadsheet,
+## the file pointer must be explicitly closed by calling xlsclose().
+##
+## Calling xlsopen without specifying a return argument is fairly useless!
+##
+## To make this function work at all, you need MS-Excel (95 - 2003), and/or
+## the Java package >= 1.2.8 plus Apache POI >= 3.5 and/or JExcelAPI and/or
+## OpenXLS and/or OpenOffice.org (or clones) installed on your computer +
+## proper javaclasspath set. These interfaces are referred to as COM, POI,
+## JXL, OXS, and UNO, resp., and are preferred in that order by default
+## (depending on their presence).
+## For OOXML support, in addition to Apache POI support you also need the
+## following jars in your javaclasspath: poi-ooxml-schemas-3.5.jar,
+## xbean.jar and dom4j-1.6.1.jar (or later versions). Later OpenOffice.org
+## versions (UNO) have support for OOXML as well.
+## Excel'95 spreadsheets can only be read by JExcelAPI and OpenOffice.org.
+##
+## @var{filename} should be a valid .xls or xlsx Excel file name (including
+## extension). But if you use the COM interface you can specify any extension
+## that your installed Excel version can read AND write; the same goes for UNO
+## (OpenOffice.org). Using the other Java interfaces, only .xls or .xlsx are
+## allowed. If @var{filename} does not contain any directory path, the file
+## is saved in the current directory.
+##
+## If @var{readwrite} is set to 0 (default value) or omitted, the Excel file
+## is opened for reading. If @var{readwrite} is set to True or 1, an Excel
+## file is opened (or created) for reading & writing.
+##
+## Optional input argument @var{reqintf} can be used to override the Excel
+## interface that otherwise is automatically selected by xlsopen. Currently
+## implemented interfaces (in order of preference) are 'COM' (Excel/COM),
+## 'POI' (Java/Apache POI), 'JXL' (Java/JExcelAPI), 'OXS' (Java/OpenXLS), or
+## 'UNO' (Java/OpenOffice.org - EXPERIMENTAL!).
+## In most situations this parameter is unneeded as xlsopen automatically
+## selects the most useful interface present.
+##
+## Beware: Excel invocations may be left running invisibly in case of COM
+## errors or forgetting to close the file pointer. Similarly for OpenOffice.org
+## which may even prevent Octave from being closed.
+##
+## Examples:
+##
+## @example
+## xls = xlsopen ('test1.xls');
+## (get a pointer for reading from spreadsheet test1.xls)
+##
+## xls = xlsopen ('test2.xls', 1, 'POI');
+## (as above, indicate test2.xls will be written to; in this case using Java
+## and the Apache POI interface are requested)
+## @end example
+##
+## @seealso {xlsclose, xlsread, xlswrite, xls2oct, oct2xls, xlsfinfo}
+##
+## @end deftypefn
+
+## Author: Philip Nienhuis
+## Created: 2009-11-29
+## Updates:
+## 2010-01-03 Added OOXML support
+## 2010-01-10 Changed (java) interface preference order to COM->POI->JXL
+## 2010-01-16 Removed echoeing debug info in POI stanza
+## 2010-03-01 Removed javaclasspath check for rt.jar
+## 2010-03-14 Fixed check on xwrite flag lines 204+, if xlsopen fails xls ptr
+## should be []
+## 2010-08-25 Improved help text
+## 2010-09-27 Improved POI help message for unrecognized .xls format to hint for BIFF5/JXL
+## 2010-10-20 Improved code for tracking changes to new/existing files
+## '' Lots of code cleanup, improved error checking and catching
+## '' Implemented fallback to JXL if POI can't read a file.
+## 2010-10-30 More fine-grained file existence/writable checks
+## 2010-11-01 Added <COM>.Application.DisplayAlerts=0 in COM section to avoid Excel pop-ups
+## 2010-11-05 Option for multiple requested interface types (cell array)
+## '' Bug fix: JXL fallback from POI for BIFF5 is only useful for reading
+## 2010-11-05 Slight change to reporting to screen
+## 2010-11-08 Tested with POI 3.7 (OK)
+## 2010-11-10 Texinfo header updated
+## 2010-12-01 Small bugfix - reset xlssupport in l. 102
+## 2010-12-06 Textual changes to info header
+## 2011-03-26 OpenXLS support added
+## 2011-05-18 Experimental UNO support added, incl. creating new spreadsheets
+## 2011-05-22 Textual changes in header
+## 2011-05-29 Cleanup of comments & messages
+## 2011-09-03 Reset chkintf to [] if no xls support was discovered (to allow
+## rediscovery of interfaces between xlsopen calls, e.g. javaclasspath changes)
+## 2011-09-08 Minor code cleanup
+## 2012-01-26 Fixed "seealso" help string
+## 2012-06-06 Improved interface detection logic. No more messages if same interface is
+## requested & used consecutively
+## 2012-06-07 Fixed mixed-up lastintf assignments for POI and JXL
+##
+## Latest subfunction update: 2012-06-06
+
+function [ xls ] = xlsopen (filename, xwrite=0, reqinterface=[])
+
+ persistent xlsinterfaces; persistent chkintf; persistent lastintf;
+ # xlsinterfaces.<intf> = [] (not yet checked), 0 (found to be unsupported) or 1 (OK)
+ if (isempty (chkintf));
+ chkintf = 1;
+ xlsinterfaces = struct ('COM', [], 'POI', [], 'JXL', [], 'OXS', [], 'UNO', []);
+ endif
+ if (isempty (lastintf))
+ lastintf = "---";
+ endif
+
+ xlssupport = 0;
+
+ if (nargout < 1)
+ usage ("XLS = xlsopen (Xlfile [, Rw] [, reqintf]). But no return argument specified!");
+ endif
+
+ if (~(islogical (xwrite) || isnumeric (xwrite)))
+ usage ("Numerical or logical value expected for arg # 2")
+ 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
+ xlsinterfaces.COM = 0; xlsinterfaces.POI = 0; xlsinterfaces.JXL = 0;
+ xlsinterfaces.OXS = 0; xlsinterfaces.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 (strcmpi (reqintf, 'COM'))
+ xlsinterfaces.COM = [];
+ elseif (strcmpi (reqintf, 'POI'))
+ xlsinterfaces.POI = [];
+ elseif (strcmpi (reqintf, 'JXL'))
+ xlsinterfaces.JXL = [];
+ elseif (strcmpi (reqintf, 'OXS'))
+ xlsinterfaces.OXS = [];
+ elseif (strcmpi (reqintf, 'UNO'))
+ xlsinterfaces.UNO = [];
+ else
+ usage (sprintf ("Unknown .xls interface \"%s\" requested. Only COM, POI, JXL, OXS or UNO supported\n", reqinterface{}));
+ endif
+ endfor
+ printf ("Checking requested interface(s):\n");
+ xlsinterfaces = getxlsinterfaces (xlsinterfaces);
+ # Well, is/are the requested interface(s) supported on the system?
+ # FIXME check for multiple interfaces
+ xlsintf_cnt = 0;
+ for ii=1:numel (reqinterface)
+ if (~xlsinterfaces.(toupper (reqinterface{ii})))
+ # No it aint
+ printf ("%s is not supported.\n", upper (reqinterface{ii}));
+ else
+ ++xlsintf_cnt;
+ endif
+ endfor
+ # Reset interface check indicator if no requested support found
+ if (~xlsintf_cnt)
+ chkintf = [];
+ xls = [];
+ return
+ endif
+ endif
+ endif
+
+ # Var xwrite is really used to avoid creating files when wanting to read, or
+ # not finding not-yet-existing files when wanting to write.
+
+ # Check if Excel file exists. Adapt file open mode for readwrite argument
+ if (xwrite), fmode = 'r+b'; else fmode = 'rb'; endif
+ fid = fopen (filename, fmode);
+ if (fid < 0) # File doesn't exist...
+ if (~xwrite) # ...which obviously is fatal for reading...
+ error ( sprintf ("File %s not found\n", filename));
+ else # ...but for writing, we need more info:
+ fid = fopen (filename, 'rb'); # Check if it exists at all...
+ if (fid < 0) # File didn't exist yet. Simply create it
+ printf ("Creating file %s\n", filename);
+ xwrite = 3;
+ else # File exists, but is 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 COM or Java errors
+ fclose (fid);
+ endif
+
+ # Check for the various Excel interfaces. No problem if they've already
+ # been checked, getxlsinterfaces (far below) just returns immediately then.
+ xlsinterfaces = getxlsinterfaces (xlsinterfaces);
+
+ # Supported interfaces determined; Excel file type check moved to seperate interfaces.
+ chk1 = strcmpi (filename(end-3:end), '.xls'); # Regular (binary) BIFF
+ chk2 = strcmpi (filename(end-4:end-1), '.xls'); # Zipped XML / OOXML
+
+ # Initialize file ptr struct
+ xls = struct ("xtype", 'NONE', "app", [], "filename", [], "workbook", [], "changed", 0, "limits", []);
+
+ # Keep track of which interface is selected
+ xlssupport = 0;
+
+ # Interface preference order is defined below: currently COM -> POI -> JXL -> OXS -> UNO
+ if (xlsinterfaces.COM && ~xlssupport)
+ # Excel functioning has been tested above & file exists, so we just invoke it
+ app = actxserver ("Excel.Application");
+ try # Because Excel itself can still crash on file formats etc.
+ app.Application.DisplayAlerts = 0;
+ if (xwrite < 2)
+ # Open workbook
+ wb = app.Workbooks.Open (canonicalize_file_name (filename));
+ elseif (xwrite > 2)
+ # Create a new workbook
+ wb = app.Workbooks.Add ();
+ ### Uncommenting the below statement can be useful in multi-user environments.
+ ### Be sure to uncomment correspondig stanza in xlsclose to avoid zombie Excels
+ # wb.SaveAs (canonicalize_file_name (filename))
+ endif
+ xls.app = app;
+ xls.xtype = 'COM';
+ xls.workbook = wb;
+ xls.filename = filename;
+ xlssupport += 1;
+ lastintf = 'COM';
+ catch
+ warning ( sprintf ("ActiveX error trying to open or create file %s\n", filename));
+ app.Application.DisplayAlerts = 1;
+ app.Quit ();
+ delete (app);
+ end_try_catch
+ endif
+
+ if (xlsinterfaces.POI && ~xlssupport)
+ if ~(chk1 || chk2)
+ error ("Unsupported file format for Apache POI.")
+ endif
+ # Get handle to workbook
+ try
+ if (xwrite > 2)
+ if (chk1)
+ wb = java_new ('org.apache.poi.hssf.usermodel.HSSFWorkbook');
+ elseif (chk2)
+ wb = java_new ('org.apache.poi.xssf.usermodel.XSSFWorkbook');
+ endif
+ xls.app = 'new_POI';
+ else
+ xlsin = java_new ('java.io.FileInputStream', filename);
+ wb = java_invoke ('org.apache.poi.ss.usermodel.WorkbookFactory', 'create', xlsin);
+ xls.app = xlsin;
+ endif
+ xls.xtype = 'POI';
+ xls.workbook = wb;
+ xls.filename = filename;
+ xlssupport += 2;
+ lastintf = 'POI';
+ catch
+ clear xlsin;
+ if (xlsinterfaces.JXL)
+ printf ('Couldn''t open file %s using POI; trying Excel''95 format with JXL...\n', filename);
+ endif
+ end_try_catch
+ endif
+
+ if (xlsinterfaces.JXL && ~xlssupport)
+ if (~chk1)
+ error ("JXL can only read reliably from .xls files")
+ endif
+ try
+ xlsin = java_new ('java.io.File', filename);
+ if (xwrite > 2)
+ # Get handle to new xls-file
+ wb = java_invoke ('jxl.Workbook', 'createWorkbook', xlsin);
+ else
+ # Open existing file
+ wb = java_invoke ('jxl.Workbook', 'getWorkbook', xlsin);
+ endif
+ xls.xtype = 'JXL';
+ xls.app = xlsin;
+ xls.workbook = wb;
+ xls.filename = filename;
+ xlssupport += 4;
+ lastintf = 'JXL';
+ catch
+ clear xlsin;
+ if (xlsinterfaces.POI)
+ printf ('... No luck with JXL either, unsupported file format.\n', filename);
+ endif
+ end_try_catch
+ endif
+
+ if (xlsinterfaces.OXS && ~xlssupport)
+ if (~chk1)
+ error ("OXS can only read from .xls files")
+ endif
+ try
+ wb = javaObject ('com.extentech.ExtenXLS.WorkBookHandle', filename);
+ xls.xtype = 'OXS';
+ xls.app = 'void - OpenXLS';
+ xls.workbook = wb;
+ xls.filename = filename;
+ xlssupport += 8;
+ lastintf = 'OXS';
+ catch
+ printf ('Unsupported file format for OpenXLS - %s\n');
+ end_try_catch
+ endif
+
+ if (xlsinterfaces.UNO && ~xlssupport)
+ # 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 for <UNOruntime>.queryInterface():
+ unotmp = java_new ('com.sun.star.uno.Type', 'com.sun.star.frame.XComponentLoader');
+ aLoader = oDesktop.queryInterface (unotmp);
+ # Some trickery as Octave Java cannot create initialized arrays
+ lProps = javaArray ('com.sun.star.beans.PropertyValue', 1);
+ lProp = java_new ('com.sun.star.beans.PropertyValue', "Hidden", 0, true, []);
+ lProps(1) = lProp;
+ if (xwrite > 2)
+ xComp = aLoader.loadComponentFromURL ("private:factory/scalc", "_blank", 0, lProps);
+ else
+ xComp = aLoader.loadComponentFromURL (filename, "_blank", 0, lProps);
+ endif
+ # Workaround for <UNOruntime>.queryInterface():
+ unotmp = java_new ('com.sun.star.uno.Type', 'com.sun.star.sheet.XSpreadsheetDocument');
+ xSpdoc = xComp.queryInterface (unotmp);
+ # save in ods struct:
+ xls.xtype = 'UNO';
+ xls.workbook = xSpdoc; # Needed to be able to close soffice in odsclose()
+ xls.filename = filename;
+ xls.app.xComp = xComp; # Needed to be able to close soffice in odsclose()
+ xls.app.aLoader = aLoader; # Needed to be able to close soffice in odsclose()
+ xls.odfvsn = 'UNO';
+ xlssupport += 16;
+ lastintf = 'UNO';
+ catch
+ error ('Couldn''t open file %s using UNO', filename);
+ end_try_catch
+ endif
+
+ # if
+ # ---- other interfaces
+ # endif
+
+ # Rounding up. If none of the xlsinterfaces is supported we're out of luck.
+ if (~xlssupport)
+ if (isempty (reqinterface))
+ printf ("None.\n");
+ warning ("No support for Excel .xls I/O");
+ else
+ warning ("File type not supported by %s %s %s %s %s", reqinterface{:});
+ endif
+ xls = [];
+ # Reset found interfaces for re-testing in the next call. Add interfaces if needed.
+ chkintf = [];
+ else
+ # From here on xwrite is tracked via xls.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 xls file.
+ xls.changed = xwrite;
+
+ # Until something was written to existing files we keep status "unchanged".
+ # xls.changed = 0 (existing/only read from), 1 (existing/data added), 2 (new,
+ # data added) or 3 (pristine, no data added).
+ if (xls.changed == 1), xls.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{xlsinterfaces} = getxlsinterfaces (@var{xlsinterfaces})
+## Get supported Excel .xls 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{xlsinterfaces} it is possible to specify which
+## interface(s) should be checked.
+##
+## Currently implemented interfaces comprise:
+## - ActiveX / COM (native Excel in the background)
+## - Java & Apache POI
+## - Java & JExcelAPI
+## - Java & OpenXLS (only JRE >= 1.4 needed)
+## - Java & UNO bridge (native OpenOffice.org in background) - EXPERIMENTAL!!
+##
+## Examples:
+##
+## @example
+## xlsinterfaces = getxlsinterfaces (xlsinterfaces);
+## @end example
+
+## Author: Philip Nienhuis
+## Created: 2009-11-29
+## Last updates:
+## 2009-12-27 Make sure proper dimensions are checked in parsed javaclasspath
+## 2010-09-11 Rearranged code and clarified messages about missing classes
+## 2010-09-27 More code cleanup
+## 2010-10-20 Added check for minimum Java version (should be >= 6 / 1.6)
+## 2010-11-05 Slight change to reporting to screen
+## 2011-02-15 Adapted to javaclasspath calling style of java-1.2.8 pkg
+## 2011-03-26 OpenXLS support added
+## '' Bug fix: javaclasspath change wasn't picked up between calls with req.intf
+## 2011-05-18 Experimental UNO support added
+## 2011-05-29 Reduced verbosity
+## 2011-06-06 Fix for javaclasspath format in *nix w java-1.2.8 pkg
+## 2011-06-13 Fixed potentially faulty tests for java classlib presence
+## 2011-09-03 Fixed order of xlsinterfaces.<member> statements in Java detection try-catch
+## '' Reset tmp1 (always allow interface rediscovery) for empty xlsinterfaces arg
+## 2011-09-08 Minor code cleanup
+## 2011-09-18 Added temporary warning about UNO interface
+## 2012-03-01 Changed UNO warning so that it is suppressed when UNO is not yet chosen
+## 2012-03-07 Only check for COM if run on Windows
+## 2012-03-21 Print newline if COM found but no Java support
+## '' Improved logic for finding out what interfaces to check
+## '' Fixed bugs with Java interface checking (tmp1 initialization)
+## 2012-06-06 Improved & simplified Java check code
+
+function [xlsinterfaces] = getxlsinterfaces (xlsinterfaces)
+
+ # 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 (xlsinterfaces.COM) && isempty (xlsinterfaces.POI) && isempty (xlsinterfaces.JXL)
+ && isempty (xlsinterfaces.OXS) && isempty (xlsinterfaces.UNO))
+ # Looks like first call to xlsopen. Check Java support
+ printf ("Detected XLS interfaces: ");
+ tmp1 = [];
+ elseif (isempty (xlsinterfaces.POI) || isempty (xlsinterfaces.JXL)
+ || isempty (xlsinterfaces.OXS) || isempty (xlsinterfaces.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;
+
+ # Check if MS-Excel COM ActiveX server runs (only on Windows!)
+ if (isempty (xlsinterfaces.COM))
+ xlsinterfaces.COM = 0;
+ if (ispc)
+ try
+ app = actxserver ("Excel.application");
+ # If we get here, the call succeeded & COM works.
+ xlsinterfaces.COM = 1;
+ # Close Excel. Yep this is inefficient when we need only one r/w action,
+ # but it quickly pays off when we need to do more with the same file
+ # (+, MS-Excel code is in OS cache anyway after this call so no big deal)
+ app.Quit();
+ delete(app);
+ printf ("COM");
+ if (deflt), printf ("; "); else, printf ("*; "); deflt = 1; endif
+ catch
+ # COM non-existent. Only print message if COM is explicitly requested (tmp1==[])
+ if (~isempty (tmp1))
+ printf ("ActiveX not working; no Excel installed?\n");
+ endif
+ end_try_catch
+ endif
+ endif
+
+ if (isempty (tmp1))
+ # Check Java support. First try javaclasspath
+ try
+ jcp = javaclasspath ('-all'); # For java pkg > 1.2.7
+ 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 might be 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), ":"); endif
+ tmp1 = 1;
+ catch
+ # No Java support found
+ tmp1 = 0;
+ if (isempty (xlsinterfaces.POI) || isempty (xlsinterfaces.JXL)...
+ || isempty (xlsinterfaces.OXS) || isempty (xlsinterfaces.UNO))
+ # Some or all Java-based interface(s) explicitly requested but no Java support
+ warning (' No Java support found (no Java JRE? no Java pkg installed AND loaded?');
+ endif
+ # Set Java interfaces to 0 anyway as there's no Java support
+ xlsinterfaces.POI = 0;
+ xlsinterfaces.JXL = 0;
+ xlsinterfaces.OXS = 0;
+ xlsinterfaces.UNO = 0;
+ printf ("\n");
+ # No more need to try any Java interface
+ return
+ end_try_catch
+ endif
+
+ # Try Java & Apache POI
+ if (isempty (xlsinterfaces.POI))
+ xlsinterfaces.POI = 0;
+ # Check basic .xls (BIFF8) support
+ jpchk1 = 0; entries1 = {"poi-3", "poi-ooxml-3"};
+ # Only under *nix we might use brute force: e.g., strfind (classname, classpath);
+ # under Windows we need the following more subtle, platform-independent approach:
+ for ii=1:length (jcp)
+ for jj=1:length (entries1)
+ if (isempty (strfind (tolower (jcp{ii}), entries1{jj}))), ++jpchk1; endif
+ endfor
+ endfor
+ if (jpchk1 > 1)
+ xlsinterfaces.POI = 1;
+ printf ("POI");
+ endif
+ # Check OOXML support
+ jpchk2 = 0; entries2 = {"xbean", "poi-ooxml-schemas", "dom4j"};
+ for ii=1:length (jcp)
+ for jj=1:length (entries2)
+ if (isempty (strfind (lower (jcp{ii}), entries2{jj}))), ++jpchk2; endif
+ endfor
+ endfor
+ if (jpchk2 > 2), printf (" (& OOXML)"); endif
+ if (xlsinterfaces.POI)
+ if (deflt), printf ("; "); else, printf ("*; "); deflt = 1; endif
+ endif
+ endif
+
+ # Try Java & JExcelAPI
+ if (isempty (xlsinterfaces.JXL))
+ xlsinterfaces.JXL = 0;
+ jpchk = 0; entries = {"jxl"};
+ for ii=1:length (jcp)
+ for jj=1:length (entries)
+ if (isempty (strfind (lower (jcp{ii}), entries{jj}))), ++jpchk; endif
+ endfor
+ endfor
+ if (jpchk > 0)
+ xlsinterfaces.JXL = 1;
+ printf ("JXL");
+ if (deflt), printf ("; "); else, printf ("*; "); deflt = 1; endif
+ endif
+ endif
+
+ # Try Java & OpenXLS
+ if (isempty (xlsinterfaces.OXS))
+ xlsinterfaces.OXS = 0;
+ jpchk = 0; entries = {"openxls"};
+ for ii=1:length (jcp)
+ for jj=1:length (entries)
+ if (isempty (strfind (lower (jcp{ii}), entries{jj}))), ++jpchk; endif
+ endfor
+ endfor
+ if (jpchk > 0)
+ xlsinterfaces.OXS = 1;
+ printf ("OXS");
+ if (deflt), printf ("; "); else, printf ("*; "); deflt = 1; endif
+ endif
+ endif
+
+ # Try Java & UNO
+ if (isempty (xlsinterfaces.UNO))
+ xlsinterfaces.UNO = 0;
+ # entries0(1) = not a jar but a directory (<00o_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; endif
+ endfor
+ endfor
+ if (jpchk >= numel (entries))
+ xlsinterfaces.UNO = 1;
+ printf ('UNO');
+ if (deflt), printf ("; "); else, printf ("*; "); deflt = 1; uno_1st_time = min (++uno_1st_time, 2); endif
+ 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 ("xlsclose 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 xlsclose will only hang Octave.\n\n");
+ endif
+
+endfunction
git://git.creatis.insa-lyon.fr / CreaPhase.git / blobdiff