On Wed, Jul 11, 2012 at 14:46 +0200, Tassilo Horn wrote: > Hm, probably yes. But you can implement the other arities quiet easily. > So that version also accepts the version that reads into a byte array. > The third version is left as an exercise for the reader. ;-)
Thanks, I've done that and had to change your code a little in order to
provide the same behaviour as the Java equivalent. (return -1 when no data can
be read). The following is the implementation I use without problems now:
--- snip ---
(defn concat-input-stream
"Gets one or many input streams and returns a new input stream that
concatenates the given streams."
^java.io.InputStream [^java.io.InputStream is & more]
(proxy [java.io.InputStream] []
(read
([]
(let [input (.read is)]
(if (and (== -1 input) (seq more))
(.read (apply concat-input-stream (first more) (rest more)))
input)))
([arr]
(loop [i 0]
(if (== i (alength arr))
i
(let [input (.read this)]
(if (== -1 input)
(if (== 0 i) input i)
(do
(clojure.core/aset arr i (byte input))
(recur (inc i))))))))
([arr off len]
(loop [i 0]
(if (or (== i len)
(== (+ off i) (alength arr)))
i
(let [input (.read this)]
(if (== -1 input)
(if (== 0 i) input i)
(do
(clojure.core/aset arr (+ off i) (byte input))
(recur (inc i)))))))))))
--- snip ---
Thanks again for your help. Unfortunately I am still not sure what to use if I
face even more horrible SGML in the future, but I think the best solution
depends on the exact data ... Be that as it may: I am happy now. :)
--
Wolodja <babi...@gmail.com>
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