/usr/share/octave/packages/io-2.4.5/private/chk_jar_entries.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.
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##
## 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 3 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/>.
## chk_jar_entries - internal function finding Java .jar names in javaclasspath
## Author: Philip Nienhuis <prnienhuis@users.sf.net>
## Created: 2012-10-07
function [ retval, missing ] = chk_jar_entries (jcp, entries, dbug=0)
retval = 0;
missing = zeros (1, numel (entries));
for jj=1:length (entries)
found = 0;
for ii=1:length (jcp)
## Get jar (or folder/map/subdir) name from java classpath entry
jentry = strsplit (lower (jcp{ii}), filesep){end};
kk = 0;
while (++kk <= size (char (entries{jj}), 1) && ! found)
if (! isempty (strfind (jentry, strtrim (lower (char (entries{jj})(kk, :))))))
++retval;
found = 1;
if (dbug > 2)
fprintf (" - %s OK\n", jentry);
endif
endif
endwhile
endfor
if (! found)
if (dbug > 2)
if (iscellstr (entries{jj}))
entrtxt = sprintf ("%s/", entries{jj}{:});
entrtxt(end) = "";
else
entrtxt = entries{jj};
endif
printf (" %s....jar missing\n", entrtxt);
endif
missing(jj) = 1;
endif
endfor
endfunction
## FIXME -- reinstate these tests one there if a way is found to test private
## functions directly
##%!test
##%! entries = {"abc", {"def", "ghi"}, "jkl"};
##%! jcp1 = {"/usr/lib/java/abcx.jar", "/usr/lib/java/defz.jar", "/usr/lib/java/jkl3.jar"};
##%! jcp1 = strrep (jcp1, "/", filesep);
##%! assert (chk_jar_entries (jcp1, entries), 3);
##%!test
##%! entries = {"abc", {"def", "ghi"}, "xyz"};
##%! jcp2 = {"/usr/lib/java/abcy.jar", "/usr/lib/java/ghiw.jar", "/usr/lib/java/jkl6.jar"};
##%! jcp2 = strrep (jcp2, "/", filesep);
##%! [aaa, bbb] = chk_jar_entries (jcp2, entries);
##%! assert (aaa, 2);
##%! assert (bbb, [0 0 1]);
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