I'm jumping in really late on this thread but I stumbled across an Xtra that
claims to do Base64 encoding... I haven't actually tried it though. The URL
is http://erichu.topcities.com/index.htm
HTH
Jorge Pe�a
M�bius Multimedia
> grimmwerks wrote:
>
> > can I do base64 encoding?
>
> You can encode & decode binary data using Lingo. Base64 encoding uses an
> algorithm sort of similar to uuEncode or xxEncode, but with a different
> output character set. In a nutshell, the idea is to read in whatever
> data you need to encode as binary (BinaryIO Xtra can help you here),
> then convert it to a range of ASCII values that falls into the printable
> character range.
>
> The conversion algorithm involves the following steps:
>
> 1) convert each byte of data to 8-bit binary values
> 2) arrange the 8-bit values into groups of three 24-bit chunks
> 3) chop the 24 bits into four 6-bit bytes
> 4) index those four bytes' values into a printable char set's range
> 5) repeat steps 1-4 for the next three bytes, until the last
> 6) convert any remaining empty bytes to "="
>
> Here's the usage of a Base64 encoder/decoder I wrote last year as part
> of an encryption suite (ince this is email, I'm encoding text instead of
> binary data):
>
> -- Welcome to Director
> encodedStr = Encode64("Hey look, I'm using Base64 in Lingo")
> put encodedStr
> -- "SGV5IGxvb2ssIEknbSB1c2luZyBCYXNlNjQgaW4gTGluZ28="
>
> put Decode64( encodedStr )
> -- "Hey look, I'm using Base64 in Lingo"
>
> I think there's more detail on the uuEncode algorithm on DOUG too, if
> you're interested. Is this what you're looking for?
>
> Rob
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