Add a license check to tidy. #4018

1 files changed, 72 insertions, 0 deletions

diff --git a/src/etc/licenseck.py b/src/etc/licenseck.py
new file mode 100644
index 00000000000..14d00e8c2cb
--- /dev/null
+++ b/src/etc/licenseck.py
@@ -0,0 +1,72 @@
+# Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+license1 = """// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+"""
+
+license2 = """// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+"""
+
+license3 = """# Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+"""
+
+licenses = [license1, license2, license3]
+
+exceptions = [
+    "rt/rust_android_dummy.cpp", # BSD, chromium
+    "rt/rust_android_dummy.h", # BSD, chromium
+    "rt/isaac/randport.cpp", # public domain
+    "rt/isaac/rand.h", # public domain
+    "rt/isaac/standard.h", # public domain
+]
+
+def check_license(name, contents):
+    valid_license = False
+    for a_valid_license in licenses:
+        if contents.startswith(a_valid_license):
+            valid_license = True
+            break
+    if valid_license:
+        return True
+
+    for exception in exceptions:
+        if name.endswith(exception):
+            return True
+
+    firstlineish = contents[:100]
+    if firstlineish.find("xfail-license") != -1:
+        return True
+
+    return False
+