function htmlOut = visdiff(fname1, fname2, showchars) %VISDIFF Compare similarity of two entries % VISDIFF(fname1,fname2) brings up an HTML version of the difference % between the two files. % VISDIFF(fname1,fname2,showchars) makes the HTML display width for each % file showchars characters wide. % Copyright 1984-2003 The MathWorks, Inc. if nargin < 3 showchars = 40; end % Respect a fully qualified path if one is being given [pt1,nm1,xt1] = fileparts(fname1); if isempty(pt1) fname1 = which(fname1); [pt1,nm1,xt1] = fileparts(fname1); end d1 = dir(fname1); [pt2,nm2,xt2] = fileparts(fname2); if isempty(pt2) fname2 = which(fname2); [pt2,nm2,xt2] = fileparts(fname2); end d2 = dir(fname2); f1 = textread(fname1,'%s','delimiter','\n','whitespace',''); f2 = textread(fname2,'%s','delimiter','\n','whitespace',''); [a1,a2,score] = diffcode(f1,f2); % Construct a final version of the file for display % Skipped lines are indicated by "-----" blankLine = char(32*ones(1,showchars)); f1n = [{blankLine}; f1]; f2n = [{blankLine}; f2]; a1Final = cell(size(a1)); a1Final = f1n(a1+1); a2Final = cell(size(a2)); a2Final = f2n(a2+1); % Generate the HTML s = {}; s{1} = makeheadhtml; s{end+1} = 'File Difference'; s{end+1} = ''; s{end+1} = ''; s{end+1} = ''; s{end+1} = ''; s{end+1} = sprintf('', ... fname1,[nm1 xt1]); s{end+1} = sprintf('', ... fname2,[nm2 xt2]); s{end+1} = ''; s{end+1} = ''; s{end+1} = sprintf('',pt1); s{end+1} = sprintf('',pt2); s{end+1} = ''; s{end+1} = ''; s{end+1} = sprintf('',d1.date); s{end+1} = sprintf('',d2.date); s{end+1} = ''; s{end+1} = ''; s{end+1} = ''; s{end+1} = sprintf('',blankLine); s{end+1} = sprintf('',blankLine); s{end+1} = '
%s%s
%s%s
%s%s
    
%s   
%s
'; match = zeros(size(a1)); s{end+1} = '
';

for n = 1: length(a1Final)
    line1 = blankLine;
    line1Len = min(length(a1Final{n}),length(blankLine));
    line1(1:line1Len) = a1Final{n}(1:line1Len);
    line2 = blankLine;
    line2Len = min(length(a2Final{n}),length(blankLine));
    line2(1:line2Len) = a2Final{n}(1:line2Len);
    line1 = code2html(line1);
    line2 = code2html(line2);

    % Increment counters here
    if isequal(a1Final{n},a2Final{n})
        match(n) = 1;
        s{end+1} = sprintf('%3d %s . %s %3d
',a1(n),line1,line2,a2(n));
    elseif a1(n)==0
        s{end+1} = sprintf('  - %s > %s %3d
', ...
            line1,line2,fname2,a2(n),a2(n));
    elseif a2(n)==0
        s{end+1} = sprintf('%3d %s < %s   -
', ...
            fname1,a1(n),a1(n),line1,line2);
    else
        s{end+1} = sprintf('%3d %s x %s %3d
', ...
            fname1,a1(n),a1(n),line1,line2,fname2,a2(n),a2(n));
    end

end
s{end+1} = '
'; numMatch = sum(match); s{end+1} = sprintf('

Number of matched lines: %d
', numMatch); s{end+1} = ''; s{end+1} = ''; sOut = [s{:}]; if nargout == 0 web(['text://' sOut],'-noaddressbox'); else htmlOut = sOut; end