https://developer.mozilla.org/en/data_URIs

function generateDataURI(file) {
 var contentType = Components.classes["@mozilla.org/mime;1"]
                             .getService(Components.interfaces.nsIMIMEService)
                             .getTypeFromFile(file);
 var inputStream = Components.classes["@mozilla.org/network/file-input-stream;1"]
                             .createInstance(Components.interfaces.nsIFileInputStream);
 inputStream.init(file, 0x01, 0600, 0);
 var stream = Components.classes["@mozilla.org/binaryinputstream;1"]
                        .createInstance(Components.interfaces.nsIBinaryInputStream);
 stream.setInputStream(inputStream);
 var encoded = btoa(stream.readBytes(stream.available()));
 return "data:" + contentType + ";base64," + encoded;

}

--
map{ map{tr|10|# |;print} split//,sprintf"%.8b\n",$_}
unpack'C*',unpack'u*',"5`#8<3'X`'#8^-@`<-CPP`#8V/C8`"

http://www.moserware.com/2009/09/stick-figure-guide-to-advanced.html

http://www.moserware.com/2009/09/stick-figure-guide-to-advanced.html
--
map{ map{tr|10|# |;print} split//,sprintf"%.8b\n",$_}
unpack'C*',unpack'u*',"5`#8<3'X`'#8^-@`<-CPP`#8V/C8`"

P-UP-DOWN-DOWN-LEFT-RIGHT-LEFT-RIGHT-B-A-

UP-UP-DOWN-DOWN-LEFT-RIGHT-LEFT-RIGHT-B-A- --
map{ map{tr|10|# |;print} split//,sprintf"%.8b\n",$_}
unpack'C*',unpack'u*',"5`#8<3'X`'#8^-@`<-CPP`#8V/C8`"