Index: tools/BUILD_simulator.py |
diff --git a/tools/BUILD_simulator.py b/tools/BUILD_simulator.py |
new file mode 100644 |
index 0000000000000000000000000000000000000000..65e6b7d11ed769ce5369baffb3dfee644a7390ba |
--- /dev/null |
+++ b/tools/BUILD_simulator.py |
@@ -0,0 +1,42 @@ |
+#!/usr/bin/env python |
+# |
+# Copyright 2015 Google Inc. |
+# |
+# Use of this source code is governed by a BSD-style license that can be |
+# found in the LICENSE file. |
+ |
+# This script does a very rough simulation of BUILD file expansion, |
+# mostly to see the effects of glob(). |
+ |
+# We start by adding some symbols to our namespace that BUILD.public calls. |
+ |
+# We don't really care about this, so just no-op it. |
+def exports_files(files): |
+ pass |
+ |
+# Simulates BUILD file glob(). |
+def glob(include, exclude=()): |
+ from glob import glob as python_glob |
+ |
+ files = set() |
+ for pattern in include: |
+ files.update(python_glob(pattern)) |
+ for pattern in exclude: |
+ files.difference_update(python_glob(pattern)) |
+ return list(sorted(files)) |
+ |
+# We've put enough into our environment now to treat BUILD.public as if it were |
+# Python code. This pulls its variable definitions (SRCS, HDRS, DEFINES, etc.) |
+# into our local namespace. |
+execfile('BUILD.public') |
+ |
+# Pretty-print every variable whose name is COMPLETELY_UPPERCASE, |
+# i.e. every variable from BUILD.public. This is obviously quite heuristic. |
+from pprint import pprint |
+with open('tools/BUILD.public.expected', 'w') as out: |
+ print >>out, "This file is auto-generated by tools/BUILD_simulator.py." |
+ print >>out, "It expands BUILD.public to make it easy to see changes." |
+ for name, value in sorted(locals().items()): |
+ if name.isupper(): |
+ print >>out, name, '= ', |
+ pprint(value, out) |