wrw/wmako.py

   1 import os, threading
   2 from mako import template, lookup, filters
   3 from . import util, form, session, env, resp
   4
   5 # It seems Mako isn't thread-safe.
   6 makolock = threading.Lock()
   7
   8 class liblookup(lookup.TemplateLookup):
   9     def __init__(self, *args, **kwargs):
  10         lookup.TemplateLookup.__init__(self, *args, **kwargs)
  11
  12     def adjust_uri(self, uri, relativeto):
  13         return uri
  14
  15 libdirs = []
  16 homedir = os.getenv("HOME")
  17 if homedir is not None:
  18     usrdir = os.path.join(homedir, "wmako")
  19     if os.path.exists(usrdir):
  20         libdirs.append(usrdir)
  21 libdirs.append(os.path.join(os.path.dirname(__file__), "makolib"))
  22 cachedir = os.path.join("/tmp/", "mako-" + str(os.getuid()))
  23 defargs = {"output_encoding": "utf-8",
  24            "input_encoding": "utf-8",
  25            "default_filters": ["decode.utf8"],
  26            "module_directory": cachedir,
  27     }
  28
  29 def makelib(init=liblookup, directories=[], **kwargs):
  30     ad = dict(defargs)
  31     ad.update(kwargs)
  32     return init(directories = libdirs + directories, **ad)
  33
  34 lib = env.var(makelib())
  35
  36 if not os.path.exists(cachedir):
  37     os.mkdir(cachedir)
  38 def handle(req, filename, **kw):
  39     with makolock:
  40         tt = template.Template(filename = filename, lookup = lib.val, **defargs)
  41     req.ohead["Content-Type"] = "text/html; charset=utf-8"
  42     return [tt.render(request = req, **kw)]
  43
  44 @util.wsgiwrap
  45 def application(req):
  46     if req.method not in ["GET", "HEAD"]:
  47         raise resp.httperror(405)
  48     return handle(req, req.filename,
  49                   form = form.formdata(req),
  50                   session = session.get(req))