matthiasm@8: %
matthiasm@8: %DEGREES2SEMITONES convert a degree list to an array of semitone values
matthiasm@8: % 
matthiasm@8: % [semitones, success, errormessage] = degrees2semitones(degreelist, {verbose})
matthiasm@8: % 
matthiasm@8: % Converts a list of degrees to corresponding semitone intervals 
matthiasm@8: % 
matthiasm@8: % Success = 1 if symbols parsed correctly, 0 otherwise.
matthiasm@8: % 
matthiasm@8: % If optional argument 'verbose' is 1, function prints any errormessage to 
matthiasm@8: % the screen.
matthiasm@8: % 
matthiasm@8: % calls degree2semitone
matthiasm@8: % 
matthiasm@8: % returns:  semitones (array of integers)
matthiasm@8: %           success (boolean)
matthiasm@8: %           errormessage (string)
matthiasm@8: %
matthiasm@8: %
matthiasm@8: % Author: Christopher Harte,  August 2005
matthiasm@8: % 
matthiasm@8: % Copyright: Centre for Digital Music, Queen Mary University of London 2005 
matthiasm@8: %
matthiasm@8: % This file is part of the C4DM Chord Toolkit.  
matthiasm@8: %
matthiasm@8: % The C4DM Chord Toolkit is free software; you can redistribute it and/or 
matthiasm@8: % modify it under the terms of the GNU General Public License as published 
matthiasm@8: % by the Free Software Foundation; either version 2 of the License, or
matthiasm@8: % (at your option) any later version.
matthiasm@8: %
matthiasm@8: % The C4DM Chord Toolkit is distributed in the hope that it will be useful,
matthiasm@8: % but WITHOUT ANY WARRANTY; without even the implied warranty of
matthiasm@8: % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
matthiasm@8: % GNU General Public License for more details.
matthiasm@8: %
matthiasm@8: % You should have received a copy of the GNU General Public License
matthiasm@8: % along with the C4DM Toolkit; if not, write to the Free Software
matthiasm@8: % Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
matthiasm@8: %
matthiasm@8: 
matthiasm@8: function [semitones, success, errormessage] = degrees2semitones(degreelist, verbose)
matthiasm@8: 
matthiasm@8: % set verbose default to 0
matthiasm@8: if nargin < 2
matthiasm@8:     verbose = 0;
matthiasm@8: end
matthiasm@8: 
matthiasm@8: errormessage = '';
matthiasm@8: 
matthiasm@8: ilength = length(degreelist);
matthiasm@8: 
matthiasm@8: index = 1;
matthiasm@8: 
matthiasm@8: tempindex = 1;
matthiasm@8: 
matthiasm@8: tempstring = '';
matthiasm@8: 
matthiasm@8: success = 1;
matthiasm@8: 
matthiasm@8: parindex  = 1;
matthiasm@8: 
matthiasm@8: semitones = [];
matthiasm@8: 
matthiasm@8: 
matthiasm@8: while index <= ilength
matthiasm@8:     
matthiasm@8:    
matthiasm@8:     while (degreelist(index) ~= ',')  
matthiasm@8:         
matthiasm@8:         tempstring(tempindex) = degreelist(index);
matthiasm@8:         tempindex = tempindex +1;
matthiasm@8:         index = index + 1;
matthiasm@8:         
matthiasm@8:         if(index > ilength)
matthiasm@8:             break;
matthiasm@8:         end
matthiasm@8:         
matthiasm@8:         if (degreelist(index) == ',') && (index == ilength)
matthiasm@8:             success = 0;
matthiasm@8:             errormessage = sprintf(['Error in degrees2semitones: degree list finishes with a comma "' degreelist '"\n']);
matthiasm@8:         end
matthiasm@8:             
matthiasm@8:             
matthiasm@8:     end
matthiasm@8:     
matthiasm@8:         [semitones(parindex),ok, error] = degree2semitone(tempstring);
matthiasm@8:         % concatenate error messages if there are any...
matthiasm@8:         errormessage = [errormessage error];
matthiasm@8:         
matthiasm@8:         if(ok == 1)
matthiasm@8:             tempstring = '';
matthiasm@8:             tempindex = 1;
matthiasm@8:             parindex = parindex + 1;
matthiasm@8:             index = index + 1;
matthiasm@8:         else
matthiasm@8: 
matthiasm@8:             errormessage = [errormessage sprintf(['Error in degrees2semitones: incorrect degree in list "' degreelist '"\n'])];
matthiasm@8:             success = 0;
matthiasm@8:             index = ilength +1;            
matthiasm@8:         end
matthiasm@8:     
matthiasm@8:     
matthiasm@8: end
matthiasm@8: 
matthiasm@8: if (success == 0) && (verbose == 1)
matthiasm@8: 
matthiasm@8:     fprintf(1,errormessage)
matthiasm@8:     
matthiasm@8: end    
matthiasm@8: 
matthiasm@8: 
matthiasm@8: 
matthiasm@8: 
matthiasm@8: 
matthiasm@8: 
matthiasm@8: 
matthiasm@8: