From 95890a2a611100a833ee727a4a39d5334b017ddf Mon Sep 17 00:00:00 2001
From: Nathan Yergler <nathan@yergler.net>
Date: Mon, 29 Jul 2013 08:10:28 -0400
Subject: [PATCH] Allow definition of pagination rules by page index.

---
 pelican/paginator.py | 20 ++++++++++++++++++--
 pelican/settings.py  | 15 +++++++++++++--
 2 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/pelican/paginator.py b/pelican/paginator.py
index e29a32fe..b5db2d7d 100644
--- a/pelican/paginator.py
+++ b/pelican/paginator.py
@@ -3,6 +3,7 @@ from __future__ import unicode_literals, print_function
 import six
 
 # From django.core.paginator
+from collections import namedtuple
 import functools
 import logging
 import os
@@ -11,6 +12,13 @@ from math import ceil
 
 logger = logging.getLogger(__name__)
 
+
+PaginationRule = namedtuple(
+    'PaginationRule',
+    'min_page URL SAVE_AS',
+)
+
+
 class Paginator(object):
     def __init__(self, name, object_list, settings):
         self.name = name
@@ -109,8 +117,16 @@ class Page(object):
         """Returns URL information as defined in settings. Similar to
         URLWrapper._from_settings, but specialized to deal with pagination
         logic."""
-        setting = "%s_%s" % ('PAGINATION', key)
-        value = self.settings[setting]
+
+        rule = None
+
+        # find the last matching pagination rule
+        for p in self.settings['PAGINATION_PATTERNS']:
+            if p.min_page <= self.number:
+                rule = p
+
+        value = getattr(rule, key)
+
         if not isinstance(value, six.string_types):
             logger.warning('%s is set to %s' % (setting, value))
             return value
diff --git a/pelican/settings.py b/pelican/settings.py
index b65a6df7..ff5f4ce4 100644
--- a/pelican/settings.py
+++ b/pelican/settings.py
@@ -73,8 +73,9 @@ DEFAULT_CONFIG = {
     'TAG_SAVE_AS': os.path.join('tag', '{slug}.html'),
     'AUTHOR_URL': 'author/{slug}.html',
     'AUTHOR_SAVE_AS': os.path.join('author', '{slug}.html'),
-    'PAGINATION_URL': '{name}{number}.html',
-    'PAGINATION_SAVE_AS': '{name}{number}.html',
+    'PAGINATION_PATTERNS': [
+        (0, '{name}{number}.html', '{name}{number}.html'),
+    ],
     'YEAR_ARCHIVE_SAVE_AS': False,
     'MONTH_ARCHIVE_SAVE_AS': False,
     'DAY_ARCHIVE_SAVE_AS': False,
@@ -238,6 +239,16 @@ def configure_settings(settings):
             'http://docs.getpelican.com/en/latest/settings.html#timezone '
             'for more information')
 
+    # fix up pagination rules
+    from pelican.paginator import PaginationRule
+    pagination_rules = [
+        PaginationRule(*r) for r in settings['PAGINATION_PATTERNS']
+    ]
+    settings['PAGINATION_PATTERNS'] = sorted(
+        pagination_rules,
+        key=lambda r: r[0],
+    )
+
     # Save people from accidentally setting a string rather than a list
     path_keys = (
             'ARTICLE_EXCLUDES',