Multiple CMS improvements

sitescripts/cms/sources.py

Index: sitescripts/cms/sources.py
===================================================================
--- a/sitescripts/cms/sources.py
+++ b/sitescripts/cms/sources.py
@@ -22,16 +22,20 @@ from ConfigParser import SafeConfigParse
 class Source:
   def resolve_link(self, url, locale):
     parsed = urlparse.urlparse(url)
     page = parsed.path
     if parsed.scheme != "" or page.startswith("/") or page.startswith("."):
       # Not a page link
       return None, None
 
+    if parsed.path == "" and url != "":
+      # Page-relative link
+      return None, None
+
     config = self.read_config()
     default_locale = config.get("general", "defaultlocale")
     default_page = config.get("general", "defaultpage")
 
     checked_page = page
     if config.has_option("locale_overrides", page):
       checked_page = config.get("locale_overrides", page)
 
@@ -62,17 +66,17 @@ class Source:
 
   @staticmethod
   def page_filename(page, format):
     return "pages/%s.%s" % (page, format)
 
   def list_pages(self):
     for filename in self.list_files("pages"):
       root, ext = os.path.splitext(filename)
-      format = ext[1:]
+      format = ext[1:].lower()
       yield root, format
 
   def has_page(self, page, format):
     return self.has_file(self.page_filename(page, format))
 
   def read_page(self, page, format):
     return self.read_file(self.page_filename(page, format))
 
@@ -82,17 +86,17 @@ class Source:
 
   @staticmethod
   def localizable_file_filename(locale, filename):
     return "locales/%s/%s" % (locale, filename)
 
   def list_localizable_files(self):
     default_locale = self.read_config().get("general", "defaultlocale")
     return filter(
-      lambda f: os.path.splitext(f)[1] != ".json",
+      lambda f: os.path.splitext(f)[1].lower() != ".json",
       self.list_files("locales/%s" % default_locale)
     )
 
   def has_localizable_file(self, locale, filename):
     return self.has_file(self.localizable_file_filename(locale, filename))
 
   def read_localizable_file(self, locale, filename):
     return self.read_file(self.localizable_file_filename(locale, filename), binary=True)
@@ -237,17 +241,21 @@ class FileSource(Source):
   def read_file(self, filename, binary=False):
     encoding = None if binary else "utf-8"
     with codecs.open(self.get_path(filename), "rb", encoding=encoding) as handle:
       return handle.read()
 
   def list_files(self, subdir):
     result = []
     def do_list(dir, relpath):
-      files = os.listdir(dir)
+      try:
+        files = os.listdir(dir)
+      except OSError:
+        return
+
       for filename in files:
         path = os.path.join(dir, filename)
         if os.path.isfile(path):
           result.append(relpath + filename)
         elif os.path.isdir(path):
           do_list(path, relpath + filename + "/")
     do_list(self.get_path(subdir), "")
     return result