-
Notifications
You must be signed in to change notification settings - Fork 1
/
middleware.clj
45 lines (42 loc) · 1.59 KB
/
middleware.clj
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
(ns configurati.middleware
(:require
[clojure.string :as string]
[cheshire.core :as json]))
(defn- re-quote [s]
(let [special-characters (set ".?*+^$[]\\(){}|")
escape-fn #(if (special-characters %) (str \\ %) %)]
(clojure.string/join (map escape-fn s))))
(defn json-parsing-middleware
([] (json-parsing-middleware {}))
([opts]
(fn [source parameter-name]
(let [key-fn (get opts :key-fn true)
parse-fn (get opts :parse-fn
(fn [value] (json/parse-string value key-fn)))
parameters-to-parse (set (get opts :only))
parameter-value (get source parameter-name)]
(if (or (empty? parameters-to-parse)
(parameters-to-parse parameter-name))
(parse-fn parameter-value)
parameter-value)))))
(defn separator-parsing-middleware
([] (separator-parsing-middleware {}))
([opts]
(fn [source parameter-name]
(let [separator (get opts :separator ",")
trim (get opts :trim true)
parse-fn
(get opts :parse-fn
(fn [value]
(if value
(let [parts (string/split value
(re-pattern (re-quote separator)))
trimmed (if trim (map #(string/trim %) parts) parts)]
trimmed)
value)))
parameters-to-parse (set (get opts :only))
parameter-value (get source parameter-name)]
(if (or (empty? parameters-to-parse)
(parameters-to-parse parameter-name))
(parse-fn parameter-value)
parameter-value)))))