Nico Weber b9ce56aee6 LibWeb: Make btoa() and atob() correctly handle values between 128 and 255 ...

btoa() takes a byte string, so it must decode the UTF-8 argument into
a Vector<u8> before calling encode_base64.

Likewise, in atob() decode_base64 returns a byte string, so that needs
to be converted to UTF-8.

With this, `btoa(String.fromCharCode(255))` is '/w==' as it should
be, and `atob(btoa(String.fromCharCode(255))) == String.fromCharCode(255)`
remains true.

2020-07-22 19:22:00 +02:00

6.2 KiB

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