Add a license check to tidy. #4018

13 files changed, 113 insertions, 2 deletions

diff --git a/src/etc/check-summary.py b/src/etc/check-summary.py
index 7faacbfbb26..272bbc6fbbd 100755
--- a/src/etc/check-summary.py
+++ b/src/etc/check-summary.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 import sys
 
diff --git a/src/etc/combine-tests.py b/src/etc/combine-tests.py
index 1e3c0bcfbfc..d6efcbc4642 100755
--- a/src/etc/combine-tests.py
+++ b/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
diff --git a/src/etc/extract-tests.py b/src/etc/extract-tests.py
index 891e8674f88..9d9b7817f4b 100644
--- a/src/etc/extract-tests.py
+++ b/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
diff --git a/src/etc/extract_grammar.py b/src/etc/extract_grammar.py
index 63e89563464..58d1975c042 100755
--- a/src/etc/extract_grammar.py
+++ b/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.
 
diff --git a/src/etc/get-snapshot.py b/src/etc/get-snapshot.py
index 7d390c8c9aa..130ace64ce4 100755
--- a/src/etc/get-snapshot.py
+++ b/src/etc/get-snapshot.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 import os, tarfile, re, shutil, sys
 from snapshot import *
diff --git a/src/etc/latest-unix-snaps.py b/src/etc/latest-unix-snaps.py
index 01d9edddf78..7a2ddba3a16 100755
--- a/src/etc/latest-unix-snaps.py
+++ b/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 *
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
+
diff --git a/src/etc/make-snapshot.py b/src/etc/make-snapshot.py
index 4c2950af1cc..27d17c2ff16 100755
--- a/src/etc/make-snapshot.py
+++ b/src/etc/make-snapshot.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 import snapshot, sys
 
diff --git a/src/etc/mirror-all-snapshots.py b/src/etc/mirror-all-snapshots.py
index f4bb8c042ea..f1fce7a94b5 100644
--- a/src/etc/mirror-all-snapshots.py
+++ b/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 *
diff --git a/src/etc/snapshot.py b/src/etc/snapshot.py
index b19a44e968d..123987d4b1e 100644
--- a/src/etc/snapshot.py
+++ b/src/etc/snapshot.py
@@ -1,3 +1,5 @@
+# xfail-license
+
 import re, os, sys, glob, tarfile, shutil, subprocess, tempfile
 
 try:
diff --git a/src/etc/sugarise-doc-comments.py b/src/etc/sugarise-doc-comments.py
index bd21447ffcc..6399cff6b88 100755
--- a/src/etc/sugarise-doc-comments.py
+++ b/src/etc/sugarise-doc-comments.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 #
 # this script attempts to turn doc comment attributes (#[doc = "..."])
diff --git a/src/etc/tidy.py b/src/etc/tidy.py
index 2c498b9283f..e866d80062d 100644
--- a/src/etc/tidy.py
+++ b/src/etc/tidy.py
@@ -1,6 +1,8 @@
 #!/usr/bin/env python
+# xfail-license
 
 import sys, fileinput, subprocess, re
+from licenseck import *
 
 err=0
 cols=78
@@ -13,14 +15,25 @@ result=config_proc.communicate()[0]
 true="true".encode('utf8')
 autocrlf=result.strip() == true if result is not None else False
 
-def report_err(s):
+def report_error_name_no(name, no, s):
     global err
-    print("%s:%d: %s" % (fileinput.filename(), fileinput.filelineno(), s))
+    print("%s:%d: %s" % (name, no, s))
     err=1
 
+def report_err(s):
+    report_error_name_no(fileinput.filename(), fileinput.filelineno(), s)
+
+def do_license_check(name, contents):
+    if not check_license(name, contents):
+        report_error_name_no(name, 1, "incorrect license")
+
+
 file_names = [s for s in sys.argv[1:] if (not s.endswith("_gen.rs"))
                                      and (not ".#" in s)]
 
+current_name = ""
+current_contents = ""
+
 try:
     for line in fileinput.input(file_names,
                                 openhook=fileinput.hook_encoded("utf-8")):
@@ -42,6 +55,19 @@ try:
 
         if line_len > cols:
             report_err("line longer than %d chars" % cols)
+
+        if fileinput.isfirstline() and current_name != "":
+            do_license_check(current_name, current_contents)
+
+        if fileinput.isfirstline():
+            current_name = fileinput.filename()
+            current_contents = ""
+
+        current_contents += line
+
+    if current_name != "":
+        do_license_check(current_name, current_contents)
+
 except UnicodeDecodeError, e:
     report_err("UTF-8 decoding error " + str(e))
 
diff --git a/src/etc/unicode.py b/src/etc/unicode.py
index ff9f75e996e..5dabf34953b 100755
--- a/src/etc/unicode.py
+++ b/src/etc/unicode.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# xfail-license
 
 # This digests UnicodeData.txt and DerivedCoreProperties.txt and emits rust
 # code covering the core properties. Since this is a pretty rare event we