Path fixing when creating files that need URIs

anvil/rules/closure_js_rules.py

@@ -400,7 +400,8 @@ class JsDependencyGraph(object):
       rel_path = os.path.relpath(dep_file.src_path, base_path)
       rel_path = anvil.util.strip_build_paths(rel_path)
       lines.append('goog.addDependency(\'%s\', %s, %s);' % (
-          rel_path, dep_file.provides, dep_file.requires))
+          anvil.util.ensure_forwardslashes(rel_path),
+          dep_file.provides, dep_file.requires))
     return u'\n'.join(lines)
 
   def get_transitive_closure(self, entry_points):

anvil/util.py

@@ -37,6 +37,18 @@ def get_script_path():
   return os.path.dirname(os.path.abspath(inspect.stack()[1][1]))
 
 
+def ensure_forwardslashes(path):
+  """Fixes a potentially Windows-esque file path into a valid URI.
+
+  Args:
+    path: File path, maybe containing \\.
+
+  Returns:
+    The input path with the separators flipped to URI standard /.
+  """
+  return string.replace(path, '\\', '/')
+
+
 def strip_build_paths(path):
   """Strips out build-*/ from the given path.