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## Copyright (C) 1996 Kurt Hornik
##
## This file is part of Octave.
##
## Octave 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, or (at your option)
## any later version.
##
## Octave 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, write to the Free
## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
## 02111-1307, USA.
## usage: m = split (s, t)
##
## Divides the string S into pieces separated by T, and stores the
## pieces as the rows of M (padded with blanks to form a valid
## matrix).
## Author: Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at>
## Adapted-By: jwe
function m = split (s, t)
if (nargin != 2)
usage ("split (s, t)");
endif
if (isstr (s) && isstr (t))
l_s = length (s);
l_t = length (t);
if (l_s == 0)
m = "";
return;
elseif (l_s < l_t)
error ("split: s must not be shorter than t");
endif
if (l_t == 0)
ind = 1 : (l_s + 1);
else
ind = findstr (s, t, 0);
if (length (ind) == 0)
m = s;
return;
endif
ind = [1 - l_t, ind, l_s + 1];
endif
cmd = "";
limit = length (ind) - 1;
for k = 1 : limit
range = (ind (k) + l_t) : ind (k + 1) - 1;
if (k != limit)
cmd = sprintf ("%s\"%s\", ", cmd, undo_string_escapes (s (range)));
else
cmd = sprintf ("%s\"%s\"", cmd, undo_string_escapes (s (range)));
endif
endfor
m = eval (sprintf ("str2mat (%s);", cmd));
else
error ("split: both s and t must be strings");
endif
endfunction
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