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36 lines
1.2 KiB
Racket
36 lines
1.2 KiB
Racket
11 years ago
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#lang racket/base
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(require racket/string racket/list racket/contract)
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(require (planet mb/pollen/readability))
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(provide (all-defined-out)
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(all-from-out racket/string racket/list racket/contract (planet mb/pollen/readability)))
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(define css-property-prefixes '("-moz-" "-webkit-" "-o-" "-ms-" ""))
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(define (join-css-strings properties)
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(define line-ending ";\n")
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(define out-string (string-join properties line-ending))
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(if (ends-with? out-string line-ending) ; might already have the line ending, so don't duplicate it
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out-string
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(string-append out-string line-ending)))
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(define (make-css-string p v)
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(string-join (list (->string p) (->string v)) ": "))
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(define (make-css-strings property-prefixes property-suffix values)
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; general function for creating groups of css properties
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; with browser prefixes and one value
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(define (map-suffix suffix prefixes)
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(map (λ(prefix) (string-append prefix suffix)) prefixes))
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(define properties (map-suffix property-suffix property-prefixes))
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; if single value provided, convert to list of values
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; so that it will work with map in the next step
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(when (not (list? values))
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(set! values (make-list (len properties) values)))
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(map make-css-string properties values))
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