Merge pull request #50 from stiell/hyde

---

These commits add better support for generating and serving files with custom or no filename extensions.

The tagger plugin can now generate archives without any filename extension if it is set to `null` in `site.yaml`:

    tagger:
        archives:
            all:
                extension:
                target: t
                …

The `hyde serve` command has a new argument to modify the MIME type extensions map. Example:

    hyde serve -t text/html -t text/plain .srt .asc -t application/x-xz .xz

This sets the default MIME type to `text/html` (rather than `application/octet-stream`) and maps `.srt` and `.asc` to `text/plain` and `.xz` to `application/x-xz`.

hyde/engine.py

@@ -99,6 +99,9 @@ class Engine(Application):
             help='The configuration used to generate the site')
     @store('-d', '--deploy-path', dest='deploy', default=None,
                     help='Where should the site be generated?')
+    @append('-t', '--type', dest='types', default=[], nargs='+',
+                    metavar=('TYPE', 'EXT'), help='Add a MIME type mapping for'
+                    ' one or more extensions, or set the default MIME type.')
     def serve(self, args):
         """
         The serve command. Serves the site at the given
@@ -109,7 +112,10 @@ class Engine(Application):
         sitepath = Folder(Folder(args.sitepath).fully_expanded_path)
         config_file = sitepath.child(args.config)
         site = self.make_site(args.sitepath, args.config, args.deploy)
-        from hyde.server import HydeWebServer
+        from hyde.server import HydeWebServer, HydeRequestHandler
+        for t in args.types:
+          for e in t[1:] or ['']:
+            HydeRequestHandler.extensions_map[e] = t[0]
         server = HydeWebServer(site, args.address, args.port)
         logger.info("Starting webserver at [%s]:[%d]", args.address, args.port)
         try:

hyde/ext/plugins/tagger.py

@@ -142,5 +142,6 @@ class TaggerPlugin(Plugin):
                                         "walk_resources_tagged_with_%s" % tag)
                                 ))
                 archive_text = self.template.render(text, context)
-                archive_file = File(target.child("%s.%s" % (tag, extension)))
+                archive_file = File(target.child("%s.%s" % (tag, extension)
+                    if extension is not None else tag))
                 archive_file.write(archive_text)