1 files changed, 70 insertions, 0 deletions
diff --git a/src/arrow/dev/archery/archery/utils/rat.py b/src/arrow/dev/archery/archery/utils/rat.py
new file mode 100644
index 000000000..e7fe19a7e
--- /dev/null
+++ b/src/arrow/dev/archery/archery/utils/rat.py
@@ -0,0 +1,70 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+import fnmatch
+import re
+from xml.etree import ElementTree
+
+from ..lang.java import Jar
+from .cache import Cache
+from .command import capture_stdout
+
+RAT_VERSION = 0.13
+RAT_JAR_FILENAME = "apache-rat-{}.jar".format(RAT_VERSION)
+RAT_URL_ = "https://repo1.maven.org/maven2/org/apache/rat/apache-rat"
+RAT_URL = "/".join([RAT_URL_, str(RAT_VERSION), RAT_JAR_FILENAME])
+
+
+class Rat(Jar):
+    def __init__(self):
+        jar = Cache().get_or_insert_from_url(RAT_JAR_FILENAME, RAT_URL)
+        Jar.__init__(self, jar)
+
+    @capture_stdout(strip=False)
+    def run_report(self, archive_path, **kwargs):
+        return self.run("--xml", archive_path, **kwargs)
+
+    def report(self, archive_path, **kwargs):
+        return RatReport(self.run_report(archive_path, **kwargs))
+
+
+def exclusion_from_globs(exclusions_path):
+    with open(exclusions_path, 'r') as exclusions_fd:
+        exclusions = [e.strip() for e in exclusions_fd]
+        return lambda path: any([fnmatch.fnmatch(path, e) for e in exclusions])
+
+
+class RatReport:
+    def __init__(self, xml):
+        self.xml = xml
+        self.tree = ElementTree.fromstring(xml)
+
+    def __repr__(self):
+        return "RatReport({})".format(self.xml)
+
+    def validate(self, exclusion=None):
+        for r in self.tree.findall('resource'):
+            approvals = r.findall('license-approval')
+            if not approvals or approvals[0].attrib['name'] == 'true':
+                continue
+
+            clean_name = re.sub('^[^/]+/', '', r.attrib['name'])
+
+            if exclusion and exclusion(clean_name):
+                continue
+
+            yield clean_name