add extended converter example that looks for images in multiple dirs

1 files changed, 19 insertions, 0 deletions

diff --git a/docs/modules/extend/examples/pdf-converter-multiple-imagesdirs.rb b/docs/modules/extend/examples/pdf-converter-multiple-imagesdirs.rb
new file mode 100644
index 00000000..29747feb
--- /dev/null
+++ b/docs/modules/extend/examples/pdf-converter-multiple-imagesdirs.rb
@@ -0,0 +1,19 @@
+class PDFConverterMultipleImagesdirs < (Asciidoctor::Converter.for 'pdf')
+  register_for 'pdf'
+
+  def resolve_image_path node, image_path, image_format, relative_to = true
+    if relative_to == true
+      unless File.file? image_path
+        docdir = (doc = node.document).attr 'docdir'
+        %w(imagesdir imagesdir2).each do |attr_name|
+          imagesdir = (doc.attr attr_name) || ''
+          abs_imagesdir = File.absolute_path imagesdir, docdir
+          next unless File.file? (File.absolute_path image_path, abs_imagesdir)
+          relative_to = abs_imagesdir
+          break
+        end
+      end
+    end
+    super
+  end
+end