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1 ## Copyright (C) 2000, 2001, 2004, 2005 Paul Kienzle |
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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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18 ## 02110-1301, USA. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {[@var{n}, @var{s}] =} weekday (@var{d}, [@var{form}]) |
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22 ## Return the day of week as a number in @var{n} and a string in @var{s}, |
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23 ## for example @code{[1, "Sun"]}, @code{[2, "Mon"]}, @dots{}, or |
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24 ## @code{[7, "Sat"]}. |
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25 ## |
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26 ## @var{d} is a serial date number or a date string. |
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27 ## |
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28 ## If the string @var{form} is given and is @code{"long"}, @var{s} will |
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29 ## contain the full name of the weekday; otherwise (or if @var{form} is |
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30 ## @code{"short"}), @var{s} will contain the abbreviated name of the weekday. |
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31 ## @seealso{datenum, datevec, eomday} |
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32 ## @end deftypefn |
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33 |
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34 ## Author: pkienzle <pkienzle@users.sf.net> |
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35 ## Created: 10 October 2001 (CVS) |
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36 ## Adapted-By: William Poetra Yoga Hadisoeseno <williampoetra@gmail.com> |
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37 |
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38 function [n, s] = weekday (d, form) |
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39 |
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40 if (nargin < 1 || nargin > 2) |
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41 usage("[n, s] = weekday (d, [form])"); |
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42 endif |
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43 |
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44 if (nargin < 2) |
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45 form = "short"; |
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46 endif |
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47 |
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48 v = datevec (d); |
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49 t = strptime (sprintf ("%d-%d-%d", v(3), v(2), v(1)), "%d-%m-%Y"); |
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50 |
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51 n = t.wday + 1; |
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52 |
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53 if (nargout > 1) |
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54 if (strcmpi (form, "long")) |
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55 s = strftime ("%A", t); |
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56 else |
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57 s = strftime ("%a", t); |
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58 endif |
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59 endif |
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60 |
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61 endfunction |
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62 |
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63 # tests |
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64 %!assert(weekday(728647),2) |
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65 %!assert(weekday('19-Dec-1994'),2) |
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66 # demos |
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67 %!demo |
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68 %! [n, s] = weekday (now ()) |
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69 %!demo |
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70 %! [n, s] = weekday (728647) |
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71 %!demo |
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72 %! [n, s] = weekday ('19-Dec-1994') |
