lib/podoff.rb in podoff-1.2.0 vs lib/podoff.rb in podoff-1.2.1

@@ -1,8 +1,8 @@
 
 #--
-# Copyright (c) 2015-2015, John Mettraux, [e-mail]
+# Copyright (c) 2015-2017, John Mettraux, [e-mail]
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
 # in the Software without restriction, including without limitation the rights
 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
@@ -28,11 +28,11 @@
 require 'stringio'
 
 
 module Podoff
 
-  VERSION = '1.2.0'
+  VERSION = '1.2.1'
 
   def self.load(path, encoding)
 
     Podoff::Document.load(path, encoding)
   end
@@ -151,10 +151,15 @@
     def pages
 
       #@objs.values.select { |o| o.type == '/Page' }
 
       ps = @objs.values.find { |o| o.type == '/Pages' }
-      return nil unless ps
+
+      fail ArgumentError.new(
+        "no /Pages, the PDF is not usable by Podoff as is, you have to do " +
+        "`qpdf --object-streams=disable original.pdf unpacked.pdf` " +
+        "and use unpacked.pdf instead of original.pdf"
+      ) unless ps
 
       extract_refs(ps.attributes[:kids]).collect { |r| @objs[r] }
     end
 
     def page(index)