- Fix a bug whereby a ``renderer`` argument to the ``@bfg_view``

  decorator that provided a package-relative template filename might
  not have been resolved properly.  Symptom: inappropriate ``Missing
  template resource`` errors.

1 files changed, 16 insertions, 0 deletions

diff --git a/repoze/bfg/resource.py b/repoze/bfg/resource.py
index 25e6af4f7..ff10273e4 100644
--- a/repoze/bfg/resource.py
+++ b/repoze/bfg/resource.py
@@ -5,6 +5,7 @@ from zope.interface import implements
 
 from repoze.bfg.interfaces import IPackageOverrides
 
+from repoze.bfg.path import package_path
 from repoze.bfg.threadlocal import get_current_registry
 
 class OverrideProvider(pkg_resources.DefaultProvider):
@@ -180,3 +181,18 @@ def resolve_resource_spec(spec, package_name='__main__'):
     elif package_name is None:
         package_name, filename = None, spec
     return package_name, filename
+
+def resource_spec_from_abspath(abspath, package):
+    """ Try to convert an absolute path to a resource in a package to
+    a resource specification if possible; otherwise return the
+    absolute path.  """
+    if getattr(package, '__name__', None) == '__main__':
+        return abspath
+    pp = package_path(package) + os.path.sep
+    if abspath.startswith(pp):
+        relpath = abspath[len(pp):]
+        return '%s:%s' % (package.__name__,
+                          relpath.replace(os.path.sep, '/'))
+    return abspath
+            
+