lib/jason.rb in jason-0.3.0 vs lib/jason.rb in jason-0.3.1

@@ -30,21 +30,32 @@
   # @return [String] the compiled template
   def self.compile(template)
     "#{eruby_template(template).src}; Jason.process(_buf)"
   end
   
+  # Process a rendered buffer.
+  # 
+  # Removes any trailing commas and compresses the buffer.
+  # 
+  # Usually, you should not have to call this method.
+  # 
+  # @param [String] buffer
   def self.process(buffer)
     JSON.load(remove_trailing_commas(buffer)).to_json
   end
   
   private
   
   def self.eruby_template(template)
     JSONEruby.new(template)
   end
   
+  # Based upon the string scanner found in jnunemaker's crack.
+  # 
+  # @see https://github.com/jnunemaker/crack crack
   def self.remove_trailing_commas(json)
+    json = json.dup
     comma_position = nil
     quoting = nil
     scanner = StringScanner.new(json)
     
     while scanner.scan_until(/(\\['"]|['",\]\}])/)
@@ -54,10 +65,10 @@
           quoting = char
         elsif quoting == char
           quoting = nil
         end
       when ']', '}'
-        if comma_position && json[comma_position + 1...scanner.pos - 1] =~ /^\s*$/
+        if comma_position && json[comma_position + 1...scanner.pos - 1] =~ /\A\s*\z/
           json[comma_position] = ''
           scanner.pos -= 1
           comma_position = nil
         end
       when ','
\ No newline at end of file