This site is a static rendering of the Trac instance that was used by R7RS-WG1 for its work on R7RS-small (PDF), which was ratified in 2013. For more information, see Home. For a version of this page that may be more recent, see BlobIoShinn in WG2's repo for R7RS-large.

BlobIoShinn

cowan

2011-06-29 08:57:49

To work with mixed binary/textual I/O, the following R6RS-compatible procedures are proposed:

(read-blob <length> [<input-port>])
(read-blob! <blob> <length> [<input-port>])
(write-blob <blob> [<output-port>])
(utf8->string <blob>)
(string->utf8 <string>)

It's an error to pass invalid bytes to utf8->string. A plausible recovery strategy is to convert each invalid byte into a U+FFFD character.