Do you know a function that takes a Clojure string and converts it to a map. For example, if the function gets the string
:first "John" :last "Lukas" :city "London"
it returns a map with the previous key-value relations.
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1 Answer
You can use the clojure.end/read-string function for this. It makes sure that nobody injects code to your system, but otherwise will parse clojure data structures. Prepend "{" and append "}" to make it a map, that can be parsed that way:
(def stringtoparse ":first \"John\" :last \"Lukas\" :city \"London\"")
(clojure.edn/read-string (str "{" stringtoparse "}"))
7 Comments
CrazySynthax
When I use the module clojure.edn I get an error: ClassNotFoundException clojure.edn java.net.URLClassLoader.findClass (URLClassLoader.java:381) I use Clojure 1.7. Does this module exist only in Clojure 1.8 ? Is there anyway to use it in version 1.7 ?
Matthias Wimmer
What version of clojure are use using? The clojure.edn namespace is present since Clojure 1.5.
CrazySynthax
@Mattias Wimmer, before typing clojure.edn/read-string I did: (require '[clojure.edn]) and then it passed.
Arthur Ulfeldt
If you are using read-string you have a security hole and your app will be pwn3e. @Elogent is completely correct here and it's important. If you dismiss this because you are sure the "special flag" is set to false, and you run this in production then you will randomly have a security hole sometime in the future.
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