1 files changed, 34 insertions, 0 deletions
diff --git a/_plugins/relativize_url.rb b/_plugins/relativize_url.rb
new file mode 100644
index 0000000..23e1712
--- /dev/null
+++ b/_plugins/relativize_url.rb
@@ -0,0 +1,34 @@
+require 'pathname'
+
+module Jekyll
+  module UrlRelativizer
+    # def relativize_url(url)
+    #   pageUrl = @context.registers[:page]["url"]
+    #   if pageUrl[-1] == "/"
+    #     pageDir = Pathname(pageUrl)
+    #   else
+    #     pageDir = Pathname(pageUrl).parent
+    #   end
+    # ret = Pathname(url).relative_path_from(pageDir).to_s
+    # puts pageDir.to_s + + " -> " + url.to_s + " => " + ret
+    # ret
+    # end
+
+    def relativize_url(input)
+      return if input.nil?
+      input = ensure_leading_slash(input)
+      page_url = @context.registers[:page]["url"]
+      if page_url[-1]
+        page_dir = Pathname(page_url)
+      else
+        page_dir = Pathname(page_url).parent
+      end
+
+      ret = Pathname(input).relative_path_from(page_dir).to_s
+      # puts page_url.to_s + "," + page_dir.to_s + + "," + input.to_s + "," + ret
+      return ret
+    end
+  end
+end
+
+Liquid::Template.register_filter(Jekyll::UrlRelativizer)