1 files changed, 49 insertions, 0 deletions
diff --git a/tools/distrib/check_copyright.py b/tools/distrib/check_copyright.py
new file mode 100755
index 0000000000..1a47853217
--- /dev/null
+++ b/tools/distrib/check_copyright.py
@@ -0,0 +1,49 @@
+#!/usr/bin/python2.7
+import os
+import sys
+import subprocess
+
+# find our home
+ROOT = os.path.abspath(
+    os.path.join(os.path.dirname(sys.argv[0]), '../..'))
+os.chdir(ROOT)
+
+# open the license text
+with open('LICENSE') as f:
+  LICENSE = f.read().splitlines()
+
+# license format by file extension
+# key is the file extension, value is a format string
+# that given a line of license text, returns what should
+# be in the file
+LICENSE_FMT = {
+  '.c': ' * %s',
+  '.cc': ' * %s',
+  '.h': ' * %s',
+}
+
+# pregenerate the actual text that we should have
+LICENSE_TEXT = dict(
+    (k, '\n'.join((v % line).rstrip() for line in LICENSE))
+    for k, v in LICENSE_FMT.iteritems())
+
+OLD_LICENSE_TEXT = dict(
+    (k, v.replace('2015', '2014')) for k, v in LICENSE_TEXT.iteritems())
+
+# scan files, validate the text
+for filename in subprocess.check_output('git ls-tree -r --name-only -r HEAD',
+                                        shell=True).splitlines():
+  ext = os.path.splitext(filename)[1]
+  if ext not in LICENSE_TEXT: continue
+  license = LICENSE_TEXT[ext]
+  old_license = OLD_LICENSE_TEXT[ext]
+  with open(filename) as f:
+    text = '\n'.join(line.rstrip() for line in f.read().splitlines())
+  if license in text:
+    pass
+  elif old_license in text:
+    pass
+    #print 'old license in: %s' % filename
+  else:
+    print 'no license in: %s' % filename
+