Trying to convert arbitrary strings to Clojure objects via read-string is 
rather dangerous – read-string can execute arbitrary code (if the string 
happens to look like a tagged literal).

 

Aside from that, read-string is only going to read the first expression from 
the string:

 

                (read-string “42 13”) ;=> 42 – the “ 13” portion is just ignored

 

And anything like a file path is going to give you a read failure as well:

 

                (read-string "/path/to/file") ;=> java.lang.RuntimeException: 
Invalid token: /path/to/file

 

or if it’s a Windows path with a drive specifier:

 

                (read-string "c\\:/path/to/file") ;=> c – and the rest of the 
string is ignored

 

Sean Corfield -- (970) FOR-SEAN -- (904) 302-SEAN
An Architect's View -- http://corfield.org/

"If you're not annoying somebody, you're not really alive."
-- Margaret Atwood

 

On 4/14/17, 2:39 PM, "clojure@googlegroups.com on behalf of 
manas.mar...@gmail.com" <clojure@googlegroups.com on behalf of 
manas.mar...@gmail.com> wrote:

 

Hi

 I am trying to compare two eclipse preferences files with a piece of code I 
picked from internet

 Some of the values in the file are version numbers and clojure is throwing 
number format error. How to force clojure read the properties as strings.

 

 

    

 CompilerException java.lang.NumberFormatException: Invalid number: 2.1.2, 
compiling:(CompareEclipsePrefs.clj:25:21) 

 

 

 Code I used is below. Please can someone advise how to prevent number 
conversion from string

 

(require 'clojure.java.io);'
(defn load-props
  [file-name]
  (with-open [^java.io.Reader reader (clojure.java.io/reader file-name)] 
    (let [props (java.util.Properties.)]
      (.load props reader)
      (into {} 
        (for [[k v] props] [(keyword k) (read-string v)])))))

 

 

thanks

Manas

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