"Pavel Vozenilek" <pavel_vozenilek@hotmail.com> wrote in message news:cjlkfo$mcl$1@sea.gmane.org...
"Jonathan Turkanis" wrote:
... and lzo as well, please.
I wrote an LZO wrapper but didn't include it because of licensing concerns.
If I
am assured that I can write a wrapper intended to be used with GPL'd software without the wrapper being covered by the GPL, I'll defintely include it.
It would be most unfortunate technical progress being hindered by such approach.
It would be nice to include filters that can read and write Markus Oberhumer's lzop file format, but it does not appear to be documented and he never responded to an email I sent him. I assume there's a header specifying compression
Agred. The reason I bong it up is that I remember someone saying some like this: it's clear that under European Union law wrappers would not be covered by GPL, but under US law it might not be so clear. options
and some metadata and a trailer containing data length and a checksum, but it's difficult to decipher the source code.
LZO is absolutely undocumented and its code is one big mess (but works).
Good, so it's not just me ;-)
AFAIK Markus Oberhumer can't be reached for long time by anybody.
I'm definitely expecting more compression methods to be added in the future. I also hope that other people will write some of them ;-)
I guess this will happen. There are few very promissing compression technologies (say LZMA) around and lot of good implementations of proven ones.
This also lead me to question: is there example of any encryption/decryption filter in Iostreams?
Not yet.
There are quite many of them in C++, each using their own conventions and it may happen someone will normalize them to be useable within Iostreams.
I thought of writing wrappers for the crypto++ library, which I have used successfully before. However, the library's documentation is terrible. Also it is large, takes a long time to build and provides it's own chaining mechanism, so I'm not sure how useful wrappers would be. If you know of some links to fairly self-contained implementations of cryptographic algorithms, could you post them? Jonathan