upload recipe bootstrap script (6a4b2e4)

recipes.py

 #!/usr/bin/env python
 
 # Copyright 2016 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 """Bootstrap script to clone and forward to the recipe engine tool.
 
 ***********************************************************************
 ** DO NOT MODIFY EXCEPT IN THE PER-REPO CONFIGURATION SECTION BELOW. **
@@ skipping 33 matching lines @@
   repo.
 
   We assume all fields are repeated since we don't have a proto spec to work
   with.
 
   Args:
     fh: a filehandle containing the text format protobuf.
   Returns:
     A recursive dictionary of lists.
   """
-  def parse_atom(text):
+  def parse_atom(field, text):
     if text == 'true':
       return True
     if text == 'false':
       return False
+
+    # repo_type is an enum. Since it does not have quotes,
+    # invoking literal_eval would fail.
+    if field == 'repo_type':
+      return text
+
     return ast.literal_eval(text)
 
   ret = {}
   for line in fh:
     line = line.strip()
     m = re.match(r'(\w+)\s*:\s*(.*)', line)
     if m:
-      ret.setdefault(m.group(1), []).append(parse_atom(m.group(2)))
+      ret.setdefault(m.group(1), []).append(parse_atom(m.group(1), m.group(2)))
       continue
 
     m = re.match(r'(\w+)\s*{', line)
     if m:
       subparse = parse_protobuf(fh)
       ret.setdefault(m.group(1), []).append(subparse)
       continue
 
     if line == '}':
       return ret
@@ skipping 79 matching lines @@
     ensure_engine()
 
   args = ['--package', recipes_cfg_path,
           '--bootstrap-script', __file__] + sys.argv[1:]
   return _subprocess_call([
       sys.executable, '-u',
       os.path.join(engine_path, engine_subpath, 'recipes.py')] + args)
 
 if __name__ == '__main__':
   sys.exit(main())