annotate scripts/strings/strrep.m @ 2313:5ca126254d15

[project @ 1996-07-11 21:25:22 by jwe]
author jwe
date Thu, 11 Jul 1996 21:25:22 +0000
parents 204cc7db6f4a
children b5568c31ee2c
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1 ## Copyright (C) 1995, 1996 Kurt Hornik
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 2, or (at your option)
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8 ## any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, write to the Free
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17 ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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18 ## 02111-1307, USA.
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20 ## usage: strrep (s, x, y)
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21 ##
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22 ## Replace all occurences of the substring x of the string s with the
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23 ## string y.
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24
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25 ## Author: Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at>
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26 ## Created: 11 November 1994
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27 ## Adapted-By: jwe
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28
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29 function t = strrep (s, x, y)
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30
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31 if (nargin <> 3)
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32 usage ("strrep (s, x, y)");
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33 endif
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34
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35 if (! (isstr (s) && isstr (x) && isstr (y)))
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36 error ("strrep: all arguments must be strings");
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37 endif
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38
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39 if (length (x) > length (s) || isempty (x))
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40 t = s;
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41 return;
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42 endif
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43
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44 ind = findstr (s, x, 0);
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45 len = length (ind);
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46 if (len == 0)
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47 t = s;
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48 else
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49 s = toascii (s);
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50 x = toascii (x);
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51 y = toascii (y);
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52
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53 l_x = length (x);
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54 tmp = s (1 : ind (1) - 1);
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55 t = [tmp, y];
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56 for k = 1 : len - 1
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57 tmp = s (ind (k) + l_x : ind (k+1) - 1);
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58 t = [t, tmp, y];
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59 endfor
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60 tmp = s (ind(len) + l_x : length (s));
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61 t = [t, tmp];
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62 t = setstr (t);
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63 endif
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64
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65 endfunction