lib/princely.rb in yellowlab-princely-1.2.5.yellowlab.2 vs lib/princely.rb in yellowlab-princely-1.2.5.yellowlab.3

@@ -19,21 +19,38 @@
 require 'princely/rails'
 
 class Princely
   VERSION = "1.0.0" unless const_defined?("VERSION")
   
+  cattr_writer :log_file
   attr_accessor :exe_path, :style_sheets, :log_file, :logger
 
+  def self.prince_executable
+    @@prince_executable ||= begin
+      path = `which prince`.chomp
+      raise "Cannot find prince command-line app in $PATH" if @exe_path.length == 0
+      path
+    end
+  end
+
+  def self.prince_executable=(path)
+    raise "Configured prince executable '#{path}' is not valid. Check file exists and is executable by user." if File.executable?(path)
+    @@prince_executable = path
+  end
+
+  def self.log_file
+    @@log_file ||= "#{Rails.root}/log/prince.log"
+  end
+
   # Initialize method
   #
-  def initialize()
+  def initialize
     # Finds where the application lives, so we can call it.
-    @exe_path = `which prince`.chomp
-    raise "Cannot find prince command-line app in $PATH" if @exe_path.length == 0
-  	@style_sheets = ''
-  	@log_file = "#{Rails.root}/log/prince.log"
-  	@logger = Rails.logger
+    @exe_path = self.class.prince_executable
+    @style_sheets = ''
+    @log_file = self.class.log_file
+    @logger = Rails.logger
   end
   
   # Sets stylesheets...
   # Can pass in multiple paths for css files.
   #
@@ -92,6 +109,6 @@
     # Actually call the prince command, and pass the entire data stream back.
     pdf = IO.popen(path, "w+")
     pdf.puts(string)
     pdf.close
   end
-end
\ No newline at end of file
+end