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1 ## Copyright (C) 2000 Etienne Grossman |
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2 ## |
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3 ## This program is free software; you can redistribute it and/or modify |
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4 ## it under the terms of the GNU General Public License as published by |
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5 ## the Free Software Foundation; either version 2 of the License, or |
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6 ## (at your option) any later version. |
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7 ## |
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8 ## This program is distributed in the hope that it will be useful, |
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9 ## but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 ## GNU General Public License for more details. |
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12 ## |
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13 ## You should have received a copy of the GNU General Public License |
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14 ## along with this program; if not, write to the Free Software |
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15 ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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16 |
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17 ## t = rmfield(s,key1,...) |
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18 ## |
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19 ## Removes key1, key2, ... from structure s. |
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20 ## Return s if s is not a struct. Any better behavior? |
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21 ## |
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22 ## For m****b compatibility and flexibility. |
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23 ## |
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24 ## Basically, does a 'filtering' copy of s. |
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25 ## |
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26 ## See also cmpstruct, fields, setfield, isstruct, getfield, isfield, |
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27 ## catstruct and struct. |
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28 ## |
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29 |
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30 ## Author: Etienne Grossmann <etienne@isr.ist.utl.pt> |
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31 ## Last modified: January 2000 |
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32 ## November 2000: Paul Kienzle <pkienzle@kienzle.powernet.co.uk> |
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33 ## return error rather than trapping to keyboard |
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34 |
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35 function t = rmfield(s,...) |
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36 if ! is_struct(s) , |
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37 t = s ; |
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38 return |
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39 end |
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40 va_start() ; |
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41 rmf = ' ' ; |
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42 nargin-- ; |
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43 while nargin-- , |
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44 tmp = va_arg() ; |
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45 if ! isstr(tmp) , |
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46 error('rmfield: called with non-string key'); |
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47 else |
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48 rmf = [rmf,tmp,' '] ; |
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49 end |
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50 end |
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51 for [val, key] = s , |
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52 if ! index(rmf,[' ',key,' ']) , % Check if key is wanted |
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53 eval(['t.',key,'=val;']) ; % Copy |
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54 end |
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55 end |
