From a0163068af99b0a4f73607ded10046d37fa9296e Mon Sep 17 00:00:00 2001
From: Stefan Schlott <stefan@ploing.de>
Date: Sat, 24 Aug 2013 11:04:18 +0200
Subject: [PATCH] Path names for articles

---
 Rules                 | 18 ++++++++++++++++++
 lib/articlehelpers.rb | 20 ++++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 lib/articlehelpers.rb

diff --git a/Rules b/Rules
index 38c52c2d..4bc80dd8 100644
--- a/Rules
+++ b/Rules
@@ -67,6 +67,24 @@ route "/htaccess" do
   "/.htaccess"
 end
 
+route '/articles/*' do
+  # Find corresponding article (for getting metadata)
+  articleitem = article_base_item(item)
+  if articleitem
+    # Create directory basename
+    url = '/' + pathname_of_article(articleitem)
+    # Main article goes to index.html, don't touch other filenames
+    if item.equal? articleitem then
+      url + '/index.html'
+    else
+      idparts = item.identifier.split('/')
+      url + "/#{idparts.last}.#{item[:extension]}"
+    end
+  else
+    nil
+  end
+end
+
 route '*' do
   if item.binary?
     item.identifier.chop + '.' + item[:extension]
diff --git a/lib/articlehelpers.rb b/lib/articlehelpers.rb
new file mode 100644
index 00000000..1b855e4a
--- /dev/null
+++ b/lib/articlehelpers.rb
@@ -0,0 +1,20 @@
+def article_base_item(item)
+  idparts = item.identifier.split('/')
+  articleid = "/#{idparts[1]}/#{idparts[2]}/"
+  if idparts.length>3 then
+    result = @items[articleid]
+    if (!result)
+      raise Nanoc::Errors::GenericTrivial.new("Base article #{articleid} for item #{item.identifier} not found!")
+    end
+    result
+  else
+    item
+  end
+end
+
+def pathname_of_article(item)
+  idparts = item.identifier.split('/')
+  time = item[:created_at]
+  slug = idparts[2].sub( %r{^[0-9]*-}, "" )
+  time.strftime('%Y-%m-%d') + '-' + slug
+end