Add a license check to tidy. rust-lang#4018

Author: brson

src/etc/check-summary.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 import sys
 

src/etc/combine-tests.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 # this combines all the working run-pass tests into a single large crate so we
 # can run it "fast": spawning zillions of windows processes is our major build

src/etc/extract-tests.py

@@ -1,3 +1,5 @@
+# xfail-license
+
 # Script for extracting compilable fragments from markdown
 # documentation. See prep.js for a description of the format
 # recognized by this tool. Expects a directory fragements/ to exist

src/etc/extract_grammar.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 # This script is for extracting the grammar from the rust docs.
 

src/etc/get-snapshot.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 import os, tarfile, re, shutil, sys
 from snapshot import *

src/etc/latest-unix-snaps.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 import os, tarfile, hashlib, re, shutil, sys
 from snapshot import *

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
+

src/etc/make-snapshot.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 import snapshot, sys
 

src/etc/mirror-all-snapshots.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 import os, tarfile, hashlib, re, shutil
 from snapshot import *

src/etc/snapshot.py

@@ -1,3 +1,5 @@
+# xfail-license
+
 import re, os, sys, glob, tarfile, shutil, subprocess, tempfile
 
 try: