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## Copyright (C) 2009,2010.2011,2012,2013 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 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/>.
## Parse a string representing a range of cells for a spreadsheet
## into nr of rows and nr of columns and also extract top left
## cell address + top row + left column. Some error checks are implemented.
## Author: Philip Nienhuis <pr.nienhuis at users.sf.net>
## Created: 2009-06-20
## Latest update 2010-01-13
## 2013-12-06 Updated copyright strings; style fixes
## 2014-04-13 Invoke binary __char2num__ for col->colnr conversion
## 2014_08_25 Switch to col2num (.oct) for colstr->col conversion to allow
## compilation on 64-bit MingW systems (mex won't compile int64_t)
## '' Clean up code
function [topleft, nrows, ncols, toprow, lcol] = parse_sp_range (range_org)
crange = strrep (deblank (upper (range_org)), " ", "");
range_error = 0;
nrows = 0;
ncols = 0;
# Basic checks
if (index (crange, ':') == 0)
if (isempty (crange))
range_error = 0;
leftcol = 'A';
rightcol = 'A';
else
# Only upperleft cell given, just complete range to 1x1
# (needed for some routines)
crange = [crange ":" crange];
endif
endif
# Split up both sides of the range
[topleft, lowerright] = strtok (crange, ':');
# Get toprow and clean up left column
[st, en] = regexp (topleft, '\d+');
toprow = str2double (topleft(st:en));
lcol = col2num (topleft(1:st-1));
# Get bottom row and clean up right column
[st, en] = regexp (lowerright, '\d+');
bottomrow = str2double (lowerright(st:en));
rcol = col2num (lowerright (2:st-1));
# Check nr. of rows
nrows = bottomrow - toprow + 1;
if (nrows < 1)
range_error = 1;
endif
if (range_error == 0)
# Check
ncols = rcol - lcol + 1;
if (ncols < 1)
range_error = 1;
endif
endif
if (range_error > 0)
ncols = 0;
nrows = 0;
error ("Spreadsheet range error!");
endif
endfunction
## FIXME -- reinstate these tests one there if a way is found to test private
## functions directly
#%!test
#%! [a b c d e] = parse_sp_range ('A1:B2');
#%! assert ([a b c d e], ['A1', 2, 2, 1, 1]);
#%
#%!test
#%! [a b c d e] = parse_sp_range ('A1:AB200');
#%! assert ([a b c d e], ['A1', 200, 28, 1, 1]);
#%
#%!test
#%! [a b c d e] = parse_sp_range ('cd230:iY65536');
#%! assert ([a b c d e], ['CD230', 65307, 178, 230, 82]);
#%
#%!test
#%! [a b c d e] = parse_sp_range ('BvV12798 : xFd1054786');
#%! assert ([b c d e], [1041989, 14439, 12798, 1946]);
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