Thanks, header seems very useful and relevant to what I was doing, but I
ended up doing something slightly different because I needed to include the
information retrieved using the chunk header codec in the final result
(specifically, the type of the chunk). Here is some code:
Hello,
Is it possible to use 'repeated with a dynamic size if the length-defining
prefix does not directly precede the content? For example, see PNG chunks:
http://en.wikipedia.org/wiki/Portable_Network_Graphics#.22Chunks.22_within_the_file
The codec would be:
(def chunk
(b/ordered-map
I would use header for this:
(def chunk
(header :int-be
#(ordered-map
:type (b/repeated :byte :length 4)
:data (b/repeated :byte :length %)
:crc (b/repeated :byte :length 4))
#(count (:data %
The
Thanks, I fixed the documentation issues. Feel free to share your id3 tags
parser, if you like :) You can see that mine is still stuck at the very
beginning..
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On Jan 30, 2014, at 01:36 , Steffen steffen.die...@gmail.com wrote:
If you would like to use a specific codec other than :byte or :ubyte but also
restrict the number of bytes read this would only work if you expected to
have some kind of optional padding after your objects, like:
Am Donnerstag, 30. Januar 2014 14:05:07 UTC+1 schrieb Michael Gardner:
On Jan 30, 2014, at 01:36 , Steffen steffen...@gmail.com javascript:
wrote:
If you would like to use a specific codec other than :byte or :ubyte but
also restrict the number of bytes read this would only work if you
On Jan 30, 2014, at 08:10 , Steffen Dienst steffen.die...@gmail.com wrote:
That's exactly what padding is designed to do: Let's say you know there is a
run of bytes with a known length (from a header field maybe) and you want to
parse an unbounded number of objects within this area. You
Hello Clojure community,
there are already two excellent libraries for reading/writing/manipulating
binary data: Zach's Lamina and Clojurewerkz' Buffy for java's ByteBuffers.
I would like to offer another library for java's Input/OutputStreams. It is
inspired by Lamina but not compatible in
Looks good! A few questions:
1) Is it possible to specify a byte length for a 'repeated codec, rather than a
number of objects?
2) Would you consider an enum type, for convenience? Something like:
(defn enum [type m]
(compile-codec type m
(clojure.set/map-invert m)))
3) In the
Please see below.
Am Mittwoch, 29. Januar 2014 17:49:56 UTC+1 schrieb Michael Gardner:
Looks good! A few questions:
Thanks.
1) Is it possible to specify a byte length for a 'repeated codec, rather
than a number of objects?
If your 'object' is a byte,sure:
(repeated :byte :length
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