33 lines
924 B
Factor
33 lines
924 B
Factor
USING: sequences kernel namespaces splitting math ;
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IN: wrap
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! Very stupid word wrapping/line breaking
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! This will be replaced by a Unicode-aware method,
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! which works with variable-width fonts
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SYMBOL: width
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: line-chunks ( string -- words-lines )
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"\n" split [ " \t" split [ empty? not ] subset ] map ;
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: (split-chunk) ( words -- )
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-1 over [ length + 1+ dup width get > ] find drop nip
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[ 1 max cut-slice swap , (split-chunk) ] [ , ] if* ;
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: split-chunk ( words -- lines )
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[ (split-chunk) ] { } make ;
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: join-spaces ( words-seqs -- lines )
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[ [ " " join ] map ] map concat ;
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: broken-lines ( string width -- lines )
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width [
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line-chunks [ split-chunk ] map join-spaces
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] with-variable ;
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: line-break ( string width -- newstring )
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broken-lines "\n" join ;
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: indented-break ( string width indent -- newstring )
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[ length - broken-lines ] keep [ prepend ] curry map "\n" join ;
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