From 49d2e2cbc275b201f24b15304b6a72a408df40ea Mon Sep 17 00:00:00 2001
From: Roque Pinel <1685896+repinel@users.noreply.github.com>
Date: Thu, 21 Nov 2019 23:13:45 -0500
Subject: [PATCH] Silence Prince message `fin|success`

Prince outputs `fin|success` to `err`. This change sends the `err` to
the `log_file`.
---
 lib/princely/pdf.rb       | 5 ++++-
 spec/princely/pdf_spec.rb | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/princely/pdf.rb b/lib/princely/pdf.rb
index 76b7b2a..ac3fbe5 100644
--- a/lib/princely/pdf.rb
+++ b/lib/princely/pdf.rb
@@ -106,8 +106,11 @@ def initialize_pdf_from_string(string, output_file, options = {})
 
       log_command path if options[:log_command]
 
+      # Make sure the log file exists before the pipe creation.
+      FileUtils.touch log_file
+
       # Actually call the prince command, and pass the entire data stream back.
-      pdf = IO.popen(path, "w+")
+      pdf = IO.popen(path, "w+", err: log_file.to_s)
       pdf.puts string
       pdf
     end
diff --git a/spec/princely/pdf_spec.rb b/spec/princely/pdf_spec.rb
index ef761c8..74f517e 100644
--- a/spec/princely/pdf_spec.rb
+++ b/spec/princely/pdf_spec.rb
@@ -8,7 +8,7 @@
   end
 
   it "generates a PDF from HTML" do
-    pdf = Princely::Pdf.new.pdf_from_string html_doc
+    pdf = Princely::Pdf.new(log_file: "/tmp/test_log").pdf_from_string html_doc
     expect(pdf).to start_with("%PDF-1.4")
     expect(pdf.rstrip).to end_with("%%EOF")
     pdf.length > 100