37 lines
977 B
Factor
37 lines
977 B
Factor
! Copyright (C) 2004, 2005 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: strings
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USING: generic kernel kernel-internals lists math namespaces
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sequences strings ;
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: empty-sbuf ( len -- sbuf )
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dup <sbuf> [ set-length ] keep ; inline
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: fill ( count char -- string )
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<repeated> >string ; inline
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: padding ( string count char -- string )
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>r swap length - dup 0 <= [ r> 2drop "" ] [ r> fill ] if ;
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flushable
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: pad-left ( string count char -- string )
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pick >r padding r> append ; flushable
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: pad-right ( string count char -- string )
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pick >r padding r> swap append ; flushable
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: ch>string ( ch -- str )
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1 <sbuf> [ push ] keep (sbuf>string) ; flushable
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: >sbuf ( seq -- sbuf )
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dup length <sbuf> [ swap nappend ] keep ; inline
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M: object >string >sbuf (sbuf>string) ;
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M: string thaw >sbuf ;
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M: string like ( seq sbuf -- string ) drop >string ;
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M: sbuf like ( seq sbuf -- sbuf )
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drop dup sbuf? [ >sbuf ] unless ;
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