16 lines
462 B
Factor
16 lines
462 B
Factor
! Copyright (C) 2008 Daniel Ehrenberg.
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! See http://factorcode.org/license.txt for BSD license.
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USING: io io.encodings strings kernel math sequences byte-arrays io.encodings ;
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IN: io.encodings.ascii
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: encode-check>= ( string max -- byte-array )
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dupd [ >= ] curry all? [ >byte-array ] [ encode-error ] if ;
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TUPLE: ascii ;
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M: ascii encode-string
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drop 127 encode-check>= ;
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M: ascii decode-step
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3drop dup 127 >= [ encode-error ] when over push f f ;
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