unescapeJavaScriptString(code)

function code = unescapeJavaScriptString(code)
%unescapeJavaScriptString Parse a JavaScript string.
%   unescapeJavaScriptString(S) manually interprets a JavaScript string,
%   which may contain escape characters.  This is sometimes useful when
%   scraping HTML.

% Matthew J. Simoneau, January 2009
% Copyright 2009 The MathWorks, Inc.

code = strrep(code,'\\','THIS_IS_ESCAPED_DUDE');
code = strrep(code,'\b',char(8));
code = strrep(code,'\f',char(12));
code = strrep(code,'\n',char(10));
code = strrep(code,'\0',char(0));
code = strrep(code,'\r',char(13));
code = strrep(code,'\t',char(9));
code = strrep(code,'\v',char(11));
code = strrep(code,'\''','''');
code = strrep(code,'\"','"');
code = regexprep(code, ...
    '\\(\d{3})', ...
    '${native2unicode(base2dec($1,8),''latin1'')}');
code = regexprep(code, ...
    '\\x([0-9A-Fa-f]{2})', ...
    '${native2unicode(base2dec($1,16),''latin1'')}');
code = regexprep(code, ...
    '\\u([0-9A-Fa-f]{4})', ...
    '${char(base2dec($1,16))}');
code = strrep(code,'THIS_IS_ESCAPED_DUDE','\');