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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 not(ischar (s) && ischar (t)) |
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44 error ("split: both s and t must be strings"); |
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45 endif |
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46 |
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47 |
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48 l_s = length (s); |
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49 l_t = length (t); |
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50 |
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51 if (l_s == 0) |
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52 m = ""; |
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53 return; |
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54 elseif (l_t == 0) |
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55 m = s'; |
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56 return; |
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57 elseif (l_s < l_t) |
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58 error ("split: s must not be shorter than t"); |
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59 endif |
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60 |
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61 if (min(size(s)) ~= 1 | min(size(t)) ~= 1) |
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62 error("split: multible strings are not supported"); |
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63 endif |
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64 |
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65 ind = findstr (s, t, 0); |
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66 if (length (ind) == 0) |
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67 m = s; |
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68 return; |
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69 endif |
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70 ind2 = [1, ind+l_t]; |
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71 ind = [ind, l_s+1]; |
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72 |
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73 ind_diff = ind-ind2; |
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74 % Create a matrix of the correct size that's filled with spaces |
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75 m_rows = length(ind); |
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76 m_cols = max(ind_diff); |
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77 m = char( zeros(m_rows, m_cols) + ' ' ); |
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78 |
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79 % Copy the strings to the matrix |
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80 for i = 1:length(ind) |
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81 tmp = ind2(i):(ind(i)-1); |
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82 m(i, 1:length(tmp)) = s(tmp); |
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83 end |
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84 |
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85 endfunction |
