/usr/share/octave/packages/io-2.4.5/private/getxlsinterfaces.m is in octave-io 2.4.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 | ## Copyright (C) 2009-2016 Philip Nienhuis
##
## 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!!
## - native Octave, only for .xlsx (OOXML), .ODS1.2, . gnumeric
##
## Examples:
##
## @example
## xlsinterfaces = getxlsinterfaces (xlsinterfaces);
## @end example
## Author: Philip Nienhuis <prnienhuis at users.sf.net>
## Created: 2009-11-29
function [xlsinterfaces] = getxlsinterfaces (xlsinterfaces)
## tmp1 = [] (not initialized), 0 (No Java detected), or 1 (Working Java found)
persistent tmp1 = [];
persistent tmp2 = [];
persistent has_java = []; ## Built-in Java support
persistent jcp; ## Java class path
persistent uno_1st_time = 0;
if (isempty (has_java))
has_java = __have_feature__ ("JAVA");
endif
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.COM) || isempty (xlsinterfaces.POI) ...
|| isempty (xlsinterfaces.JXL) || isempty (xlsinterfaces.OXS) ...
|| isempty (xlsinterfaces.UNO))
## Can't be first call. Here one of the Java interfaces may be requested
if (! tmp1)
## Check Java support again
tmp1 = [];
elseif (has_java)
## Renew jcp (javaclasspath) as it may have been updated since last call
jcp = javaclasspath ("-all"); ## For java pkg >= 1.2.8
if (isempty (jcp))
## For java pkg < 1.2.8
jcp = javaclasspath;
endif
if (isunix && ! iscell (jcp));
jcp = strsplit (char (jcp), pathsep ());
endif
endif
endif
## deflt signals that some default interface has been selected. Just used
## for cosmetic purposes
deflt = 0;
## Check if MS-Excel COM ActiveX server runs (only on Windows!)
if (ispc && isempty (xlsinterfaces.COM))
xlsinterfaces.COM = 0;
try
app = actxserver ("Excel.application");
## 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
## If we get here, the call succeeded & COM works.
xlsinterfaces.COM = 1;
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
if (has_java)
if (isempty (tmp1))
## Check Java support
[tmp1, jcp] = __chk_java_sprt__ ();
if (! tmp1)
## 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-based 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
endif
endif
## Try Java & Apache POI
if (isempty (xlsinterfaces.POI))
xlsinterfaces.POI = 0;
## Check basic .xls (BIFF8) support
[chk, ~, missing2] = __POI_chk_sprt__ (jcp);
if (chk)
xlsinterfaces.POI = 1;
printf ("POI");
if (isempty (missing2))
printf (" (& OOXML)");
endif
if (deflt)
printf ("; ");
else
printf ("*; ");
deflt = 1;
endif
endif
endif
## Try Java & JExcelAPI
if (isempty (xlsinterfaces.JXL))
xlsinterfaces.JXL = 0;
chk = __JXL_chk_sprt__ (jcp);
if (chk)
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;
chk = __OXS_chk_sprt__ (jcp);
## Beware of unsupported openxls jar versions (chk must be > 0)
if (chk >= 1)
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;
chk = __UNO_chk_sprt__ (jcp);
if (chk)
xlsinterfaces.UNO = 1;
printf ("UNO");
if (deflt);
printf ("; ");
else
printf ("*; ");
deflt = 1;
uno_1st_time = min (++uno_1st_time, 2);
endif
endif
endif
else
## Set Java-based interfaces to 0 anyway as there's no Java support
xlsinterfaces.POI = 0;
xlsinterfaces.JXL = 0;
xlsinterfaces.OXS = 0;
xlsinterfaces.UNO = 0;
## End of has_java block
endif
## Native Octave
if (isempty (xlsinterfaces.OCT))
## Nothing to check, always supported
xlsinterfaces.OCT = 1;
printf ("OCT");
if (deflt)
printf ("; ");
else
printf ("*; ");
deflt = 1;
endif
endif
## ---- Other interfaces here, similar to the ones above.
## Java interfaces should be in the has-java if-block
if (deflt)
printf ("(* = default 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
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