On Fri, 10 Dec 2021 at 22:29, reilithion wrote:
>
>
> On Friday, January 13, 2017 at 5:32:51 AM UTC-8 Tony Garnock-Jones wrote:
>
>> On 01/12/2017 11:32 PM, Lehi Toskin wrote:
>> > P.S. I didn't see an implementation of ADLER32 anywhere, so I had to
>> write my own, which took a little longer
On Friday, January 13, 2017 at 5:32:51 AM UTC-8 Tony Garnock-Jones wrote:
> On 01/12/2017 11:32 PM, Lehi Toskin wrote:
> > P.S. I didn't see an implementation of ADLER32 anywhere, so I had to
> write my own, which took a little longer than expected, but oh well.
>
> Oh, cool. That'd probably
On Friday, January 13, 2017 at 5:32:51 AM UTC-8, Tony Garnock-Jones wrote:
>
> Oh, cool. That'd probably be a useful thing for Racket's
> net/git-checkout module, which has a piece of code in `zlib-inflate`
> that reads:
>
> ...
> (inflate i o)
> ;; Verify checksum?
> (read-bytes-exactly
On 01/12/2017 11:32 PM, Lehi Toskin wrote:
> `number->bytes`, is a function I made; its definition is
> (define (number->bytes num)
> (define hex (number->string num 16))
> ; from file/sha1
> (hex-string->bytes (if (even? (string-length hex)) hex (string-append "0"
> hex
You might be
On 01/12/2017 11:32 PM, Lehi Toskin wrote:
> P.S. I didn't see an implementation of ADLER32 anywhere, so I had to write my
> own, which took a little longer than expected, but oh well.
Oh, cool. That'd probably be a useful thing for Racket's
net/git-checkout module, which has a piece of code in
Thanks to Tonyg's links, I figured out that the part I was missing was the
ADLER-32 check of the uncompressed data added to the end of the byte string.
That makes the total byte string composition look like this:
(bytes #x78 #x9c) compressed-data-from-deflate (number->bytes (adler32
Hi Lehi,
On 01/12/2017 06:17 PM, Lehi Toskin wrote:
> Now that I think about it, it's probably naive of
> me to simple add those two bytes and expect everything to actually be
> working as expected [...] I'm assuming the Z_BUF_ERROR is being
> reported because it's not as flexible and the
On Thursday, January 12, 2017 at 10:59:13 AM UTC-8, Ethan Estrada wrote:
> Then, is this a bug or something that should be an optional argument on the
> function like `#:ignore-initial-bytes #t`? I am not deeply familiar with the
> DEFLATE file format, but this seems like bug since it doesn't
Interesting... If I prepend `(bytes #x78 #x9c)` to the compressed data created
by deflate, zlib-flate will uncompress it. Same thing happens in reverse where
I skip the first two bytes of the zlib-flate'd data and process it with inflate.
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If I run `gunzip-through-ports`, it errors out with "gnu-unzip: bad header"
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