split blog index over two pages

input/blog.md

@@ -12,5 +12,9 @@ noheader: true
 To receive my latest updates, you can subscribe to the <a href="rss.xml"><img src="img/rss.png">RSS Feed</a>.
 
 <!--%
-printBlogMenu()
+import datetime
+year = int(datetime.date.today().year)
+printBlogMenu(str(year - 5), None)
 %-->
+
+[Click here](blog_old.html) for older blog posts.

input/blog_old.md

@@ -0,0 +1,16 @@
+title: Old Blog Posts
+parent: none
+noheader: true
+---
+
+# Old Blog Archive
+
+[Click here](blog.html) for the more recent blog posts.
+
+To receive my latest updates, you can subscribe to the <a href="rss.xml"><img src="img/rss.png">RSS Feed</a>.
+
+<!--%
+import datetime
+year = int(datetime.date.today().year)
+printBlogMenu(None, str(year - 5 - 1))
+%-->

macros.py

@@ -170,9 +170,15 @@ def printRecentMenu(count = 5):
     for p in posts:
         printMenuItem(p, False, False, False, True, "0", "", False)
 
-def printBlogMenu():
+def printBlogMenu(year_min=None, year_max=None):
     posts = [p for p in pages if "post" in p and p.lang == "en"]
     posts.sort(key=lambda p: p.get("date", "9999-01-01"), reverse=True)
+
+    if year_min != None:
+        posts = [p for p in posts if int(p.get("date", "9999-01-01")[0:4]) >= int(year_min)]
+    if year_max != None:
+        posts = [p for p in posts if int(p.get("date", "9999-01-01")[0:4]) <= int(year_max)]
+
     lastyear = "0"
     for p in posts:
         lastyear = printMenuItem(p, True, False, False, True, lastyear)