progressBar(h, currentPos, maxPos)

% Authors:
% 
% Shuang Wang, Lijuan Cui and Samuel Cheng
% 
% Copyright:
% 
% Copyright ? 2007-2011 Shuang Wang
% 
% Questions:
% 
% For any questions, please contact me by shuangwang AT ou dot edu
%
% reference
%  L. Cui, S. Wang, S. Cheng, M. Yeary, "Adaptive Binary Slepian-Wolf Decoding using Particle Based Belief Propagation", Communications, IEEE Transactions on, to appear.
%  S. Wang, L. Cui, S. Cheng, Y. Zhai, M. Yeary, Q. Wu, "Noise Adaptive LDPC Decoding Using Particle Filtering," Communications, IEEE Transactions on, Vol 59. pp. 913 - 916, April 2011.
%
function h = progressBar(h, currentPos, maxPos)
% h is the handle.
% currentPos start from 1 to maxPos;
    if(isempty(h))
        h.maxPos = maxPos;
        h.startTime = tic;
        h.totalCount = 10;
        h.step = fix((h.maxPos - 1)/h.totalCount) + 1;
        h.count = 0;        
    else
        if(currentPos >= h.maxPos)
            for i = (h.count+1):h.totalCount
                fprintf('.');
                h.count = h.count + 1;
            end
            if(h.count == h.totalCount)
                fprintf('(%s s)]', stringPad(sprintf('%3.3f', toc(h.startTime)), 7));
                h.count = h.count + 1;
            end
        elseif(mod((currentPos-1), h.step) == 0)
            if(h.count == 0)
                fprintf('[.');
            else
                fprintf('.');
            end
            h.count = h.count + 1;
        end
    end
end

function str = stringPad(str, len)
    dist = len - numel(str);
    if(dist > 0)
        spacing = '                             ';
        str = [spacing(1:dist), str];
    end
end