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44 lines
1.7 KiB
44 lines
1.7 KiB
(ns NoteHub.settings |
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(:refer-clojure :exclude [replace reverse]) |
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(:use [clojure.string])) |
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; Loads and parses any file with each line consisting a key and |
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; a value separated by a "=", and returns a corresponding key-value map. |
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(defn- get-pairs-map [file] |
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(let [file-content (slurp file) |
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pairs (map #(map trim (split % #"=" 2)) |
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(remove blank? (split-lines file-content)))] |
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(apply hash-map |
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(mapcat #(list (keyword (first %)) (second %)) pairs)))) |
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; Loads the setting file to a map |
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(def settings-map |
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(get-pairs-map "settings")) |
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; Loads the messages file to a map |
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(def messages-map |
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(get-pairs-map "messages")) |
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(defn get-message [key] |
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"Returns messages used in layouts. Every key should be a keyword, e.g. (get-message :title)." |
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(messages-map key)) |
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(defn get-setting |
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"Takes a settings key, a converter function and a default value, and returns a corresponding |
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setting value. The default value is returned back when no setting value was found. |
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The converter function can be provided to convert the setting from string to a needed type. |
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This function is not applied to the specified default value! |
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Every specified key should be a keyword, e.g. (get-setting :page-width)." |
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[key & more] |
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(let [converter (first more) |
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default (second more) |
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value (settings-map key) |
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; Through this hack we can read security-critical settings from (previously |
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; set) shell variables without commiting their content to CVS |
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value (if value value |
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(System/getenv |
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(upper-case |
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(replace (name key) #"-" ""))))] |
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(if value |
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(if (fn? converter) (converter value) value) |
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default)))
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