From 3ad19aadcd0b5bdc15abd11d1369f0cadc14c981 Mon Sep 17 00:00:00 2001
From: Vadim Kononov <vadim@konoson.com>
Date: Thu, 2 Dec 2021 00:17:46 -0600
Subject: [PATCH] Improve README documentation and error messaging.

---
 README.md                   | 1 +
 lib/fillable-pdf.rb         | 2 +-
 lib/fillable-pdf/version.rb | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 92a5434..10c115c 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ FillablePDF is an extremely simple and lightweight utility that bridges iText an
     gem 'spring-watcher-listen'
     ```
 
+3. Read-only, write-protected or encrypted PDF files are currently not supported.
 
 ## Deployment with Heroku
 
diff --git a/lib/fillable-pdf.rb b/lib/fillable-pdf.rb
index 34c6313..425e8ce 100644
--- a/lib/fillable-pdf.rb
+++ b/lib/fillable-pdf.rb
@@ -21,7 +21,7 @@ def initialize(file_path)
       @pdf_form = ITEXT::PdfAcroForm.getAcroForm(@pdf_doc, true)
       @form_fields = @pdf_form.getFormFields
     rescue StandardError => e
-      raise "#{e.message} (input file may be corrupt, incompatible, or may not have any forms)"
+      raise "#{e.message} (Input file may be corrupt, incompatible, read-only, write-protected, encrypted, or may not have any form fields)" # rubocop:disable Layout/LineLength
     end
   end
 
diff --git a/lib/fillable-pdf/version.rb b/lib/fillable-pdf/version.rb
index 5b20281..78c23cc 100644
--- a/lib/fillable-pdf/version.rb
+++ b/lib/fillable-pdf/version.rb
@@ -1,3 +1,3 @@
 class FillablePDF
-  VERSION = '0.9.2'
+  VERSION = '0.9.3'
 end