Add settings to change the URL's and SAVE_AS paths

Example usage:

* ARTICLE_URL = 'posts/{date:%Y}/{date:%b}/{date:%d}/{slug}/'
* ARTICLE_SAVE_AS = 'posts/{date:%Y}/{date:%b}/{date:%d}/{slug}/index.html'

This removes CLEAN_URLS and ARTICLE_PERMALINK_STRUCTURE because these
new settings can produce the same result.

pelican/contents.py

@@ -24,6 +24,7 @@ class Page(object):
         if not settings:
             settings = _DEFAULT_CONFIG
 
+        self.settings = settings
         self._content = content
         self.translations = []
 
@@ -55,29 +56,6 @@ class Page(object):
         if not hasattr(self, 'slug') and hasattr(self, 'title'):
             self.slug = slugify(self.title)
 
-        # create save_as from the slug (+lang)
-        if not hasattr(self, 'save_as') and hasattr(self, 'slug'):
-            if self.in_default_lang:
-                if settings.get('CLEAN_URLS', False):
-                    self.save_as = '%s/index.html' % self.slug
-                else:
-                    self.save_as = '%s.html' % self.slug
-
-                clean_url = '%s/' % self.slug
-            else:
-                if settings.get('CLEAN_URLS', False):
-                    self.save_as = '%s-%s/index.html' % (self.slug, self.lang)
-                else:
-                    self.save_as = '%s-%s.html' % (self.slug, self.lang)
-
-                clean_url = '%s-%s/' % (self.slug, self.lang)
-
-        # change the save_as regarding the settings
-        if settings.get('CLEAN_URLS', False):
-            self.url = clean_url
-        elif hasattr(self, 'save_as'):
-            self.url = self.save_as
-
         if filename:
             self.filename = filename
 
@@ -115,6 +93,30 @@ class Page(object):
             if not hasattr(self, prop):
                 raise NameError(prop)
 
+    @property
+    def url_format(self):
+        return {
+            'slug': getattr(self, 'slug', ''),
+            'lang': getattr(self, 'lang', 'en'),
+            'date': getattr(self, 'date', datetime.now()),
+            'author': self.author,
+            'category': getattr(self, 'category', 'misc'),
+        }
+
+    @property
+    def url(self):
+        if self.in_default_lang:
+            return self.settings.get('PAGE_URL', 'pages/{slug}.html').format(**self.url_format)
+
+        return self.settings.get('PAGE_LANG_URL', 'pages/{slug}-{lang}.html').format(**self.url_format)
+
+    @property
+    def save_as(self):
+        if self.in_default_lang:
+            return self.settings.get('PAGE_SAVE_AS', 'pages/{slug}.html').format(**self.url_format)
+
+        return self.settings.get('PAGE_LANG_SAVE_AS', 'pages/{slug}-{lang}.html').format(**self.url_format)
+
     @property
     def content(self):
         if hasattr(self, "_get_content"):
@@ -138,6 +140,20 @@ class Page(object):
 class Article(Page):
     mandatory_properties = ('title', 'date', 'category')
 
+    @property
+    def url(self):
+        if self.in_default_lang:
+            return self.settings.get('ARTICLE_URL', '{slug}.html').format(**self.url_format)
+
+        return self.settings.get('ARTICLE_LANG_URL', '{slug}-{lang}.html').format(**self.url_format)
+
+    @property
+    def save_as(self):
+        if self.in_default_lang:
+            return self.settings.get('ARTICLE_SAVE_AS', '{slug}.html').format(**self.url_format)
+
+        return self.settings.get('ARTICLE_LANG_SAVE_AS', '{slug}-{lang}.html').format(**self.url_format)
+
 
 class Quote(Page):
     base_properties = ('author', 'date')