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author | Andreas Rottmann <a.rottmann@gmx.at> | 2010-11-21 23:17:54 +0100 |
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committer | Ludovic Courtès <ludo@gnu.org> | 2010-11-24 23:04:24 +0100 |
commit | 1044537dff91146ed17f13cfa8d1eca5f92f4307 (patch) | |
tree | 37657d8486996f73b95b1f0b279ff82935bbc637 /module/rnrs | |
parent | a5484153b83b04f8e9bbe392b97904e9493da44e (diff) | |
download | guile-1044537dff91146ed17f13cfa8d1eca5f92f4307.tar.gz |
Add implementation of "transcoded ports"
* libguile/r6rs-ports.c (make_tp, tp_write, tp_fill_input, tp_flush)
(tp_close, initialize_transcoded_ports, scm_i_make_transcoded_port): New
functions.
(scm_init_r6rs_ports): Call `initialize_transcoded_ports'.
* module/rnrs/ports.scm (transcoded-port): Actually implement,
using `%make-transcoded-port'.
* test-suite/tests/r6rs-ports.test ("8.2.6 Input and output ports"): Added a
few tests for `transcoded-port'.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Diffstat (limited to 'module/rnrs')
-rw-r--r-- | module/rnrs/io/ports.scm | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/module/rnrs/io/ports.scm b/module/rnrs/io/ports.scm index 31c1e2935..73271add8 100644 --- a/module/rnrs/io/ports.scm +++ b/module/rnrs/io/ports.scm @@ -191,8 +191,13 @@ ;; So far, we don't support transcoders other than the binary transcoder. #t) -(define (transcoded-port port) - (error "port transcoders are not supported" port)) +(define (transcoded-port port transcoder) + "Return a new textual port based on @var{port}, using +@var{transcoder} to encode and decode data written to or +read from its underlying binary port @var{port}." + (let ((result (%make-transcoded-port port))) + (set-port-encoding! result (transcoder-codec transcoder)) + result)) (define (port-position port) "Return the offset (an integer) indicating where the next octet will be |