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28 lines
712 B
28 lines
712 B
#lang racket
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(define blog-location (make-parameter #f))
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(define/contract (categorize path-string)
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(-> path-string? any)
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(let-values ([(upper bottom not-root?)
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(split-path path-string)])
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(cond
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[(not (path? upper)) (list (path->string
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bottom))]
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[(not upper) '()]
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[else
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(cons (path->string bottom)
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(categorize (path->string upper)))])))
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;(define (prefix-of
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(define (get-categories path-string)
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(let ([non-categories (categorize (blog-location))])
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(filter
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(lambda (cat)
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(not
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(member cat non-categories)))
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(cdr
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(categorize path-string)))))
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(provide get-categories blog-location)
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