72 lines
		
	
	
		
			2.0 KiB
		
	
	
	
		
			Factor
		
	
	
			
		
		
	
	
			72 lines
		
	
	
		
			2.0 KiB
		
	
	
	
		
			Factor
		
	
	
| ! Copyright (C) 2008, 2011 Slava Pestov.
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| ! See http://factorcode.org/license.txt for BSD license.
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| USING: arrays sequences kernel kernel.private accessors math
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| alien.accessors byte-arrays io io.encodings io.encodings.utf8
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| io.encodings.utf16n io.streams.byte-array io.streams.memory system
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| system.private alien strings combinators namespaces init ;
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| IN: alien.strings
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| 
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| GENERIC# alien>string 1 ( c-ptr encoding -- string/f )
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| 
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| M: c-ptr alien>string
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|     [ <memory-stream> ] [ <decoder> ] bi*
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|     "\0" swap stream-read-until drop ;
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| 
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| M: object alien>string
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|     [ underlying>> ] dip alien>string ;
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| 
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| M: f alien>string
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|     drop ;
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| 
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| ERROR: invalid-c-string string ;
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| 
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| : check-string ( string -- )
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|     0 over member-eq? [ invalid-c-string ] [ drop ] if ;
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| 
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| GENERIC# string>alien 1 ( string encoding -- byte-array )
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| 
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| M: c-ptr string>alien drop ;
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| 
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| M: string string>alien
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|     over check-string
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|     <byte-writer>
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|     [ stream-write ]
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|     [ 0 swap stream-write1 ]
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|     [ stream>> >byte-array ]
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|     tri ;
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| 
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| M: tuple string>alien drop underlying>> ;
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| 
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| HOOK: native-string-encoding os ( -- encoding ) foldable
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| 
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| M: unix native-string-encoding utf8 ;
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| M: windows native-string-encoding utf16n ;
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| 
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| : alien>native-string ( alien -- string )
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|     native-string-encoding alien>string ; inline
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| 
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| : native-string>alien ( string -- alien )
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|     native-string-encoding string>alien ; inline
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| 
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| : dll-path ( dll -- string )
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|     path>> alien>native-string ;
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| 
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| GENERIC: string>symbol ( str/seq -- alien )
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| 
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| M: string string>symbol utf8 string>alien ;
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| 
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| M: sequence string>symbol [ utf8 string>alien ] map ;
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| 
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| : (symbol>string) ( alien -- str )
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|     utf8 alien>string ;
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| 
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| GENERIC: symbol>string ( symbol(s) -- string(s) )
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| M: byte-array symbol>string (symbol>string) ;
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| M: array symbol>string [ (symbol>string) ] map ;
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| 
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| [
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|     OBJ-CPU special-object utf8 alien>string string>cpu \ cpu set-global
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|     OBJ-OS special-object utf8 alien>string string>os \ os set-global
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|     OBJ-VM-COMPILER special-object utf8 alien>string \ vm-compiler set-global
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| ] "alien.strings" add-startup-hook
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