70 lines
2.2 KiB
Matlab
70 lines
2.2 KiB
Matlab
function retval = getStrMoveRight(str)
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%function retval = getStrMoveRight(str)
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% Helper function common to OLS routines. Given a string finds expr
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% moving from left to right (potentially contained in parenthesis) until
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% it gets to the + or -. e.g., given: str =
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% '(log(DE_SIN(-1))-log(DE_SIN))+anotherparam1*log(DE_SIN)', returns
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% '(log(DE_SIN(-1))-log(DE_SIN))'
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%
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% INPUTS
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% str [string] string
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%
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% OUTPUTS
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% none
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%
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% SPECIAL REQUIREMENTS
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% none
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% Copyright (C) 2017 Dynare Team
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%
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% This file is part of Dynare.
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%
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% Dynare is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% Dynare is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with Dynare. If not, see <http://www.gnu.org/licenses/>.
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if isempty(str)
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retval = '';
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return
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end
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mathidxs = regexp(str, '[\+\-]');
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openidxs = strfind(str, '(');
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if isempty(openidxs) ...
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|| (~isempty(mathidxs) ...
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&& min(mathidxs) < min(openidxs))
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if isempty(mathidxs)
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retval = str;
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else
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retval = str(1:min(mathidxs)-1);
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end
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else
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openidxs = [(1:length(openidxs))' openidxs'];
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closedidxs = strfind(str, ')');
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closedidxs = [(1:length(closedidxs))' closedidxs'];
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assert(rows(openidxs) == rows(closedidxs));
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for i = 1:rows(closedidxs)
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closedparenidx = sum(openidxs(:, 2) < closedidxs(i, 2));
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if openidxs(closedparenidx, 1) == closedidxs(i, 1)
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break;
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end
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end
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retval = str(1:closedidxs(closedparenidx, 2));
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if length(str) > closedidxs(closedparenidx, 2) + 1
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if any(strfind('*^/', str(closedidxs(closedparenidx, 2) + 1)))
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retval = [retval ...
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str(closedidxs(closedparenidx, 2) + 1) ...
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getStrMoveRight(str(closedidxs(closedparenidx, 2) + 2:end))];
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end
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end
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end
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