On Mon, Aug 11, 2008 at 07:22:53PM +0200, Marco Gerards wrote: > Hi, > > "y.volta" <[EMAIL PROTECTED]> writes: > > > i've made a little patch for pkziped ( deflate mode ) file. by > > using this, we can have both gunzip and pkunzip supported: they have > > only header different with the same file. ;-) > > > > please note, if your file is too small, pkzip will not compress it > > but store the orginal data to the output file. > > Isn't this patented?
According to Wikipedia [1], the usual compression algorithm in ZIPs is the deflate, same as gzip. I believe older variants use the LZW algorithm, but the patents [2] for these have expired (at least in the US), and we happen to be using it already in our LZMA (and LZO?) code. [1] http://en.wikipedia.org/wiki/ZIP_(file_format) [2] http://en.wikipedia.org/wiki/LZW#Patents -- Robert Millan The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and how) you may access your data; but nobody's threatening your freedom: we still allow you to remove your data and not access it at all." _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
