Finished storage compression patch for rsync
maxb at ukf.net
Sun Jan 19 12:35:02 EST 2003
Harald Fielker wrote:
> Am Samstag, 18. Januar 2003 22:54 schrieb Max Bowsher:
>> Green, Paul wrote:
>>> You might consider using zlib instead of gzip; same algorithm, same
>>> author, but you can access the compression code via a subroutine
> Do you have an idea how i can use it for compressing a whole file?
> Is there a de/compress (char *file) function?
>>> interface. You would not have to spawn another process to run gzip,
>>> and you would not be dependent upon the user having gzip installed.
> You are right - an internal compression to rsync would be nice. But i
> would also suggest having a userdefinable option for the compressing
> program. I prefer lzo (http://www.oberhumer.com/opensource/lzo/). The
> compressor depends on the files you are using, e.g. bzip2 is good for
> small textfiles - lzo is fast and can be used for large database
> files where there are changes every 3-4 days.
>> Well, I presume it is, since it's what rsync uses to implement
>> in-transfer compression (-z option).
>> Which means you shouldn't even need to deal with adding it to the
>> rsync build system.
> Just tell me the function i have to call ;)
I believe gzopen/gzread/gzwrite/gzclose would be the easiest to use.
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