/usr/share/octave/packages/io-2.4.5/private/spsh_prstype.m is in octave-io 2.4.5-1.
This file is owned by root:root, with mode 0o644.
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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
## this program; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} [ @var{type-array} ] = spsh_prstype ( @var{iarray}, @var{rowsize}, @var{colsize}, @var{celltypes}, @var{options})
## (Internal function) Return rectangular array with codes for cell types in rectangular input cell array @var{iarray}.
## Codes are contained in input vector in order of Numeric, Boolean, Text, Formula and Empty, resp.
##
## spsh_prstype should not be invoked directly but rather through oct2xls or oct2ods.
##
## Example:
##
## @example
## typarr = spsh_chkrange (cellarray, nr, nc, ctypes, options);
## @end example
##
## @end deftypefn
## Author: Philip Nienhuis, <prnienhuis@users.sf.net>
## Created: 2010-08-02
function [ typearr ] = spsh_prstype (obj, nrows, ncols, ctype, spsh_opts)
## ctype index:
## 1 = numeric
## 2 = boolean
## 3 = text
## 4 = formula
## 5 = error / NaN / empty
typearr = ctype(5) * ones (nrows, ncols); ## type "EMPTY", provisionally
obj2 = cell (size (obj)); ## Temporary storage for strings
txtptr = cellfun ('isclass', obj, 'char'); ## type "STRING" replaced by "NUMERIC"
obj2(txtptr) = obj(txtptr);
obj(txtptr) = ctype(3); ## Save strings in a safe place
emptr = cellfun ("isempty", obj);
obj(emptr) = ctype(5); ## Set empty cells to NUMERIC
lptr = cellfun ("islogical" , obj); ## Find logicals...
obj2(lptr) = obj(lptr); ## .. and set them to BOOLEAN
ptr = cellfun ("isnan", obj); ## Find NaNs & set to BLANK
typearr(ptr) = ctype(5);
typearr(! ptr) = ctype(1); ## All other cells are now numeric
obj(txtptr) = obj2(txtptr); ## Copy strings back into place
obj(lptr) = obj2(lptr); ## Same for logicals
obj(emptr) = -1; ## Add in a filler value for empty cells
typearr(txtptr) = ctype(3); ## ...and clean up
typearr(emptr) = ctype(5); ## EMPTY
typearr(lptr) = ctype(2); ## BOOLEAN
if (! spsh_opts.formulas_as_text)
## Find formulas (designated by a string starting with "=")
fptr = cellfun (@(x) ischar (x) && strncmp (x, "=", 1), obj);
typearr(fptr) = ctype(4); ## FORMULA
endif
endfunction
## FIXME -- reinstate these tests one there if a way is found to test private
## functions directly
##%!test
##%! tstobj = {1.5, true, []; 'Text1', '=A1+B1', '=SQRT(A1)'; NaN, {}, 0};
##%! typarr = spsh_prstype (tstobj, 3, 3, [1 2 3 4 5], struct ("formulas_as_text", 0));
##%! assert (typarr, [1 2 5; 3 4 4; 5 5 1]);
##%!test
##%! tstobj = {1.5, true, []; 'Text1', '=A1+B1', '=SQRT(A1)'; NaN, {}, 0};
##%! typarr = spsh_prstype (tstobj, 3, 3, [1 2 3 4 5], struct ("formulas_as_text", 1));
##%! assert (typarr, [1 2 5; 3 3 3; 5 5 1]);
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