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baconjs now decodes hidden bacon code (uppercase is and lowercase is B or vice versa) #32

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baconjs now decodes hidden bacon code (uppercase is and lowercase is B or vice versa) #32

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41 changes: 36 additions & 5 deletions bacon/vendor/bacon.js
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Original file line number Diff line number Diff line change
Expand Up @@ -20,18 +20,49 @@
var DEFAULT_ALPHABET = 'ABCDEFGHIKLMNOPQRSTUWXYZ';

var decode = function(ciphertext, options) {
ciphertext = ciphertext.toUpperCase();
// Use the most common 24-letter Bacon alphabet by default.
// the baconcode is hidden in the ciphertext (eg uppercase = 'A' and lowercase = 'B')
var alphabet = options && options.alphabet != null ?
options.alphabet.toUpperCase() :
DEFAULT_ALPHABET;
var index = -1;
var index = 0;
var length = ciphertext.length;
var symbol;
var alphabetIndex;
symbol = ciphertext.charAt(0);
// x is for aB and X for Ab
if (symbol == 'x'){
while (++index < length) {
alphabetIndex = alphabet.indexOf(ciphertext.charAt(index).toUpperCase());
if (alphabetIndex > -1) {
symbol = ciphertext.charAt(index);
if (symbol == symbol.toUpperCase()){
ciphertext = ciphertext.substring(0, index) + 'B' + ciphertext.substring(index + 1);
} else {
ciphertext = ciphertext.substring(0, index) + 'A' + ciphertext.substring(index + 1);
}
}
}
}
else if (symbol == 'X'){
while (++index < length) {
alphabetIndex = alphabet.indexOf(ciphertext.charAt(index).toUpperCase());
if (alphabetIndex > -1) {
symbol = ciphertext.charAt(index);
if (symbol == symbol.toUpperCase()){
ciphertext = ciphertext.substring(0, index) + 'A' + ciphertext.substring(index + 1);
} else {
ciphertext = ciphertext.substring(0, index) + 'B' + ciphertext.substring(index + 1);
}
}
}
}
// continue normal decoding
ciphertext = ciphertext.toUpperCase();
// Use the most common 24-letter Bacon alphabet by default.
index = -1;
var space = '';
var result = '';
var buffer = [];
var symbol;
var alphabetIndex;
while (++index < length) {
symbol = ciphertext.charAt(index);
if (symbol == 'A' || symbol == 'B') {
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