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io/copy: write to a byte-output-stream shim

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io/copy handled file/stream/writer targets but not a host byte-output-stream
table (jolt-lang/http-client's ByteArrayOutputStream shim, :jolt/output-stream),
erroring 'don't know how to write to'. Dispatch through the shim's .write method,
byte-exact for a byte source — the JVM's io/copy writes to any OutputStream.
This commit is contained in:
Yogthos 2026-06-25 06:29:57 -04:00
parent 635cab0e49
commit 65c8072ec8
1 changed files with 8 additions and 0 deletions
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8
host/chez/io-streams.ss
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@ -296,6 +296,14 @@
(let ((port (open-file-output-port (path-of output) (file-options no-fail) (buffer-mode block))))
(put-bytevector port bv) (close-port port))
(jolt-spit output (input-text input)))))
;; a byte-output-stream shim (a host tagged-table with :jolt/output-stream,
;; e.g. http-client's ByteArrayOutputStream): write through its .write method,
;; byte-exact for a byte source.
((and (htable? output) (jolt-truthy? (jolt-ref-get output (keyword "jolt" "output-stream"))))
(let ((bv (input-bytes input)))
(record-method-dispatch output "write"
(list->cseq (list (if bv (make-jolt-array (list->vector (bytevector->u8-list bv)) 'byte)
(input-text input)))))))
(else (error #f "io/copy: don't know how to write to" output)))
jolt-nil)
(def-var! "clojure.java.io" "copy" jio-copy)