Keith Devens .com - Weblog: Base64 decoding

Monday, May 13, 2002

Base64 decoding

I just needed to decode a base64 encoded file. First I tried writing a small script with REBOL's debase function, but that didn't work. REBOL's save function kept saving it in a REBOL-readable form, not in a binary form (I was decoding a PNG), even when I used the /png refinement.

So I went looking for something already written and the first hit on Google was this very useful utility for encoding and decoding base64. Worked right away, no hitch Thanks John Walker (not that John Walker). He also has a similar utility for encoding and decoding quoted-printable encoding.

Permalink | 3 Comments | id 1988

16:34 (utc-4)

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∴ M. Bean | 13-May-2002 10:53pm est | http://www.yaysoft.com/ | #394

I was actually thinking of that. I expected it to be trivial in REBOL, so that's why I tried it first. Literally, it should have been:

save %g1.png debase read %g1.png.base64

but that turned out not to work. So I went searching for a utility and immediately found the one I linked to. If I hadn't found anything to do it, I possibly would have gone the PHP route, which would be the next easiest (and probably would have actually worked!)

Alekk wrote:

REBOL:
You should use write/binary, as "save" writes data "for REBOL", and "save/png" converts (and saves) internal rebol image datatype to png.

There should be:
write/binary %g1.png debase read %g1.png.base64

∴ Alekk | 31-Jan-2004 7:38am est | #3850

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