Alternative `loc-tree` strategy
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(def ^:private loc-tree | |
(let [loc-tree* | |
(memoize | |
(fn [loc & [unpadded?]] | |
(let [loc-parts (str/split (-> loc locale-key name) #"[-_]") | |
loc-tree (mapv #(keyword (str/join "-" %)) | |
(take-while identity (iterate butlast loc-parts))) | |
loc-tree-padded (into (vec (repeat (- 3 (count loc-tree)) nil)) | |
loc-tree)] | |
(if unpadded? loc-tree loc-tree-padded))))] | |
(identity ; memoize ; Also used runtime by translation fns | |
(fn [loc-or-locs] | |
(if-not (vector? loc-or-locs) | |
(loc-tree* loc-or-locs :unpadded) ; Build search tree from single locale | |
(->> loc-or-locs ; Build search tree from multiple desc-preference locales | |
(mapv loc-tree*) | |
(apply encore/interleave-all) | |
(filterv identity) | |
(encore/distinctv))))))) | |
(comment | |
(loc-tree :en-US) ; [:en-US :en] | |
(loc-tree [:en-US]) ; [:en-US :en] | |
(loc-tree [:en-GB :en-US]) ; [:en-GB :en-US :en] | |
(loc-tree [:en-GB :en :en-US]) ; [:en-GB :en-US :en] | |
(loc-tree [:en-GB :fr-FR :en-US]) ; [:en-GB :fr-FR :en-US :en :fr] | |
(loc-tree [:en-US :fr-FR :fr :en :DE-de]) ; [:en-US :fr-FR :de-DE :en :fr :de] | |
(time (dotimes [_ 10000] (loc-tree [:en-US :fr-FR :fr :en :DE-de])))) |
Author
ptaoussanis
commented
May 4, 2014
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