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More flexible io.streams.limited, works with encoded streams

db4
Slava Pestov 2008-06-17 00:10:09 -05:00
parent 24e9149a2e
commit dc7b414f57
2 changed files with 17 additions and 4 deletions
extra/io/streams/limited

8
extra/io/streams/limited/limited-tests.factor
View File

@ -30,3 +30,11 @@ namespaces tools.test strings kernel ;
[ "abc" CHAR: \n ] [ "\n" "limited" get stream-read-until [ >string ] dip ] unit-test
[ "\n" "limited" get stream-read-until ] [ limit-exceeded? ] must-fail-with
[ "he" CHAR: l ] [
B{ CHAR: h CHAR: e CHAR: l CHAR: l CHAR: o }
ascii <byte-reader> [
5 limit-input
"l" read-until
] with-input-stream
] unit-test

13
extra/io/streams/limited/limited.factor
View File

@ -1,7 +1,7 @@
! Copyright (C) 2008 Slava Pestov
! See http://factorcode.org/license.txt for BSD license.
USING: kernel math io destructors accessors sequences
namespaces ;
USING: kernel math io io.encodings destructors accessors
sequences namespaces ;
IN: io.streams.limited
TUPLE: limited-stream stream count limit ;
@ -12,8 +12,13 @@ TUPLE: limited-stream stream count limit ;
swap >>stream
0 >>count ;
: limit-input ( limit -- )
input-stream [ swap <limited-stream> ] change ;
GENERIC# limit 1 ( stream limit -- stream' )
M: decoder limit [ clone ] dip [ limit ] curry change-stream ;
M: object limit <limited-stream> ;
: limit-input ( limit -- ) input-stream [ swap limit ] change ;
ERROR: limit-exceeded ;