?? winenvar.m
字號(hào):
function d=winenvar(n)
%WINENVAR get windows environment variable [D]=(N)
%
% Inputs: N name of environment variable (e.g. 'temp')
%
% Outputs: D value of variable or [] is non-existant
%
% Notes: (1) This is WINDOWS specific and needs to be fixed to work on UNIX
% (2) The search is case insensitive (like most of WINDOWS).
%
% Examples: (1) Open a temporary text file:
% d=winenar('temp'); fid=fopen(fullfile(d,'temp.txt'),'wt');
% Copyright (c) 2005 Mike Brookes, mike.brookes@ic.ac.uk
% Version: $Id: winenvar.m,v 1.2 2007/05/04 07:01:39 dmb Exp $
%
% VOICEBOX is a MATLAB toolbox for speech processing.
% Home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2 of the License, or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You can obtain a copy of the GNU General Public License from
% http://www.gnu.org/copyleft/gpl.html or by writing to
% Free Software Foundation, Inc.,675 Mass Ave, Cambridge, MA 02139, USA.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
p=['%',n,'%'];
[s,d]=system(['echo ',p]);
while d(end)<=' ';
d(end)=[];
end
if strcmp(d,p)
d=[];
end
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