Created
April 4, 2018 15:24
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(ns bbcode-obfuscator) | |
(defn opening-tag [tag-name] | |
(format "[%s]" tag-name)) | |
(defn closing-tag [tag-name] | |
(format "[/%s]" tag-name)) | |
(defn tag-info [tag-name] | |
{:name tag-name | |
:open (opening-tag tag-name) | |
:close (closing-tag tag-name)}) | |
(def tags | |
(for [tag ["b" "i" "u"]] | |
(tag-info tag))) | |
(defn pick-tag-to-add [opened-tags] | |
(let [tag (rand-nth tags)] | |
(if-not (contains? opened-tags tag) | |
[(:open tag) (conj opened-tags tag)] | |
[(:close tag) (disj opened-tags tag)]))) | |
(defn close-open-tags [opened-tags] | |
(->> opened-tags | |
(map :close) | |
(apply str))) | |
(defn mut-str | |
[string] | |
(if (clojure.string/blank? string) | |
string | |
(let [state (reduce (fn [state character] | |
(let [[tag-text opened-tags] (pick-tag-to-add (:opened-tags state))] | |
(-> state | |
(assoc :result | |
(if (java.lang.Character/isWhitespace character) | |
(str tag-text (:result state)) | |
(str (:result state) tag-text character))) | |
(assoc :opened-tags opened-tags)))) | |
{:result nil | |
:opened-tags #{}} | |
(seq string))] | |
(str (:result state) (close-open-tags (:opened-tags state)))))) | |
(comment | |
(mut-str "Obfuscated") | |
;=> "[b]O[/b]b[b]f[i]u[u]s[/i]c[i]a[/u]t[/i]e[u]d[/u][/b]" | |
(mut-str "O b f u s c a t e d") | |
;=> [i][/i][/i][i][i][/i][/i][b][/u][u]O[i]b[/b]f[i]u[b]s[/i]c[/b]a[i]t[b]e[/b]d[/i] | |
) |
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