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1 ## Copyright (C) 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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19 |
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20 ## usage: m = split (s, t) |
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21 ## |
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22 ## Divides the string S into pieces separated by T, and stores the |
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23 ## pieces as the rows of M (padded with blanks to form a valid |
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24 ## matrix). |
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25 |
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26 ## Author: jwe |
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27 |
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28 function m = split (s, t) |
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29 |
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30 ## Original version by Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at>. |
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31 |
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32 if (nargin != 2) |
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33 usage ("split (s, t)"); |
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34 endif |
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35 |
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36 if (isstr (s) && isstr (t)) |
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37 |
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38 l_s = length (s); |
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39 l_t = length (t); |
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40 |
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41 if (l_s < l_t) |
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42 error ("split: s must not be shorter than t"); |
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43 endif |
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44 |
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45 if (l_t == 0) |
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46 ind = 1 : (l_s + 1); |
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47 else |
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48 ind = findstr (s, t, 0); |
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49 if (length (ind) == 0) |
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50 m = s; |
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51 return; |
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52 endif |
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53 ind = [1 - l_t, ind, l_s + 1]; |
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54 endif |
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55 |
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56 cmd = ""; |
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57 |
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58 limit = length (ind) - 1; |
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59 |
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60 for k = 1 : limit |
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61 |
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62 range = (ind (k) + l_t) : ind (k + 1) - 1; |
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63 |
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64 if (k != limit) |
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65 cmd = sprintf ("%s\"%s\", ", cmd, s (range)); |
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66 else |
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67 cmd = sprintf ("%s\"%s\"", cmd, s (range)); |
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68 endif |
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69 |
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70 endfor |
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71 |
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72 m = eval (sprintf ("str2mat (%s);", cmd)); |
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73 |
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74 |
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75 else |
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76 error ("split: both s and t must be strings"); |
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77 endif |
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78 |
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79 endfunction |
