addpw.m

matlab book matlab book2

function success = addpw(NAME,pwtoadd)
% takes username and password, adds username to list and creates file with
% password signal data 
%
% append username to list, with one username per list
ulist = fopen('userlist.txt','a');
if (ulist < 0)
   error('could not open file');
   success = 0; return;
end;
fprintf(ulist,'%s\n',NAME);
fclose(ulist);

% create file of signal data
pfilename = [NAME '.txt']; 
pfile = fopen(pfilename,'w');
if (pfile < 0)
   error('could not open file');
   success = 0; return;
end;

% write data to file
[pwrows,pwcols] = size(pwtoadd);
for rcount = 1:pwrows
    for ccount = 1:pwcols % should be 12 (number of co-efficients)
        fprintf(pfile,'%f\n',pwtoadd(rcount,pwcols));
    end;
end;

fclose(pfile);
success = 1; % output that files changed/added successfully
% otherwise zero

return;