Very fast and small Base64 Codec project at Source Forge

Hi,

I've just uploaded a project to Source Forge. It's a Base64 Codec.

"MiGBase64 is a very fast and small Base64 Codec written in Java. It is currently faster than any other Java codecs I know of and it doesn't create any temporary arrays which many others do. 3-30x faster than Sun's and 2x faster than Commons Codec"

It's under BSD licence, so feel free to use it!

MiGBase64

Cheers,
Mikael Grev

Interesting. How did you actually get that kind of a performance boost compared to other implementations? And how are you avoiding the temporary arrays? By creating a big enough array in the beginning that you know won't need a resize?

I couple of smart tricks ;-). Basically moving ALL but the absolute necessary out of the main loop.

Temp array: When encoding the array is possibly to precalculate, for decoding I have a normal and a "fast" varsion. Both are "fast" though. the normal do a pre-scan to know the exact returned length and the "fast" version has to be fed with data that are somewhat well behaved:

From Javadoc:

+ The array must have a line length of 76 chars OR no line separators at all (one line).
+ Line separator must be "\r\n", as specified in RFC 2045
+ The array must not contain illegal characters within the encoded string
+ The array CAN have illegal characters at the beginning and end, those will be dealt with appropriately.<br>

ps. You can check out the source, it's only some 50 lines per encode/decode pair.

Cheers,
Mikael

Thanks.

Also a lot of performance charts is posted on the home page at:

http://migbase64.sourceforge.net/

Cheers,
Mikael