Mauch MIREX 2010

%

%DEGREES2SEMITONES convert a degree list to an array of semitone values

% 

% [semitones, success, errormessage] = degrees2semitones(degreelist, {verbose})

% 

% Converts a list of degrees to corresponding semitone intervals 

% 

% Success = 1 if symbols parsed correctly, 0 otherwise.

% 

% If optional argument 'verbose' is 1, function prints any errormessage to 

% the screen.

% 

% calls degree2semitone

% 

% returns:  semitones (array of integers)

%           success (boolean)

%           errormessage (string)

%

%

% Author: Christopher Harte,  August 2005

% 

% Copyright: Centre for Digital Music, Queen Mary University of London 2005 

%

% This file is part of the C4DM Chord Toolkit.  

%

% The C4DM Chord Toolkit 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.

%

% The C4DM Chord Toolkit 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 should have received a copy of the GNU General Public License

% along with the C4DM Toolkit; if not, write to the Free Software

% Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

%

function [semitones, success, errormessage] = degrees2semitones(degreelist, verbose)

% set verbose default to 0

if nargin < 2

    verbose = 0;

end

errormessage = '';

ilength = length(degreelist);

index = 1;

tempindex = 1;

tempstring = '';

success = 1;

parindex  = 1;

semitones = [];

while index <= ilength

    while (degreelist(index) ~= ',')  

        tempstring(tempindex) = degreelist(index);

        tempindex = tempindex +1;

        index = index + 1;

        if(index > ilength)

            break;

        end

        if (degreelist(index) == ',') && (index == ilength)

            success = 0;

            errormessage = sprintf(['Error in degrees2semitones: degree list finishes with a comma "' degreelist '"\n']);

        end

    end

        [semitones(parindex),ok, error] = degree2semitone(tempstring);

        % concatenate error messages if there are any...

        errormessage = [errormessage error];

        if(ok == 1)

            tempstring = '';

            tempindex = 1;

            parindex = parindex + 1;

            index = index + 1;

        else

            errormessage = [errormessage sprintf(['Error in degrees2semitones: incorrect degree in list "' degreelist '"\n'])];

            success = 0;

            index = ilength +1;            

        end

end

if (success == 0) && (verbose == 1)

    fprintf(1,errormessage)

end