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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 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} split (@var{s}, @var{t}) |
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22 ## Divides the string @var{s} into pieces separated by @var{t}, returning |
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23 ## the result in a string array (padded with blanks to form a valid |
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24 ## matrix). For example, |
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25 ## |
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26 ## @example |
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27 ## split ("Test string", "t") |
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28 ## @result{} "Tes " |
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29 ## " s " |
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30 ## "ring" |
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31 ## @end example |
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32 ## @end deftypefn |
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33 |
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34 ## Author: Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at> |
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35 ## Adapted-By: jwe |
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36 |
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37 function m = split (s, t) |
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38 |
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39 if (nargin != 2) |
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40 usage ("split (s, t)"); |
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41 endif |
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42 |
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43 if (isstr (s) && isstr (t)) |
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44 |
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45 l_s = length (s); |
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46 l_t = length (t); |
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47 |
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48 if (l_s == 0) |
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49 m = ""; |
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50 return; |
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51 elseif (l_s < l_t) |
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52 error ("split: s must not be shorter than t"); |
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53 endif |
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54 |
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55 if (l_t == 0) |
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56 ind = 1 : (l_s + 1); |
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57 else |
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58 ind = findstr (s, t, 0); |
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59 if (length (ind) == 0) |
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60 m = s; |
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61 return; |
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62 endif |
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63 ind = [1 - l_t, ind, l_s + 1]; |
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64 endif |
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65 |
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66 cmd = ""; |
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67 |
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68 limit = length (ind) - 1; |
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69 |
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70 for k = 1 : limit |
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71 |
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72 range = (ind (k) + l_t) : ind (k + 1) - 1; |
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73 |
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74 if (k != limit) |
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75 cmd = sprintf ("%s\"%s\", ", cmd, undo_string_escapes (s (range))); |
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76 else |
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77 cmd = sprintf ("%s\"%s\"", cmd, undo_string_escapes (s (range))); |
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78 endif |
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79 |
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80 endfor |
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81 |
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82 m = eval (sprintf ("str2mat (%s);", cmd)); |
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83 |
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84 else |
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85 error ("split: both s and t must be strings"); |
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86 endif |
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87 |
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88 endfunction |
