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Add support for decoding base64url variant. #16

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Add support for decoding base64url variant. #16

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3 changes: 3 additions & 0 deletions lib/base64-arraybuffer.js
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,9 @@
for (var i = 0; i < chars.length; i++) {
lookup[chars.charCodeAt(i)] = i;
}
// base64url equivalents
lookup['-'.charCodeAt(0)] = 62;
lookup['_'.charCodeAt(0)] = 63;

exports.encode = function(arraybuffer) {
var bytes = new Uint8Array(arraybuffer),
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1 change: 1 addition & 0 deletions test/base64-arraybuffer_test.js
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Expand Up @@ -53,4 +53,5 @@ describe('decode', () => {
it('decode "Hello world"', () => ok(testArrayBuffers(decode("SGVsbG8gd29ybGQ="), stringArrayBuffer("Hello world"))));
it('decode "Hello worlds!"', () => ok(testArrayBuffers(decode("SGVsbG8gd29ybGRzIQ=="), stringArrayBuffer("Hello worlds!"))));
it('decode all binary characters', () => ok(testArrayBuffers(decode("AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w=="), rangeArrayBuffer())));
it('decode all binary characters from base64url', () => ok(testArrayBuffers(decode("AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0-P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn-AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq-wsbKztLW2t7i5uru8vb6_wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t_g4eLj5OXm5-jp6uvs7e7v8PHy8_T19vf4-fr7_P3-_w=="), rangeArrayBuffer())));
});