Initial BUCK build
Change-Id: I64e8a979301989062f4545a4841b06c15a372049
diff --git a/buck-tools/util.py b/buck-tools/util.py
new file mode 100644
index 0000000..96f6047
--- /dev/null
+++ b/buck-tools/util.py
@@ -0,0 +1,102 @@
+# Copyright (C) 2013 The Android Open Source Project
+#
+# Licensed 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 os
+from os import path
+
+REPO_ROOTS = {
+ 'GERRIT': 'http://gerrit-maven.storage.googleapis.com',
+ 'GERRIT_API': 'https://gerrit-api.commondatastorage.googleapis.com/release',
+ 'MAVEN_CENTRAL': 'http://repo1.maven.org/maven2',
+ 'MAVEN_LOCAL': 'file://' + path.expanduser('~/.m2/repository'),
+}
+
+
+def resolve_url(url, redirects):
+ """ Resolve URL of a Maven artifact.
+
+ prefix:path is passed as URL. prefix identifies known or custom
+ repositories that can be rewritten in redirects set, passed as
+ second arguments.
+
+ A special case is supported, when prefix neither exists in
+ REPO_ROOTS, no in redirects set: the url is returned as is.
+ This enables plugins to pass custom maven_repository URL as is
+ directly to maven_jar().
+
+ Returns a resolved path for Maven artifact.
+ """
+ s = url.find(':')
+ if s < 0:
+ return url
+ scheme, rest = url[:s], url[s+1:]
+ if scheme in redirects:
+ root = redirects[scheme]
+ elif scheme in REPO_ROOTS:
+ root = REPO_ROOTS[scheme]
+ else:
+ return url
+ root = root.rstrip('/')
+ rest = rest.lstrip('/')
+ return '/'.join([root, rest])
+
+
+def hash_file(hash_obj, path):
+ """Hash the contents of a file.
+
+ Args:
+ hash_obj: an open hash object, e.g. hashlib.sha1().
+ path: path to the file to hash.
+
+ Returns:
+ The passed-in hash_obj.
+ """
+ with open(path, 'rb') as f:
+ while True:
+ b = f.read(8192)
+ if not b:
+ break
+ hash_obj.update(b)
+ return hash_obj
+
+
+def hash_bower_component(hash_obj, path):
+ """Hash the contents of a bower component directory.
+
+ This is a stable hash of a directory downloaded with `bower install`, minus
+ the .bower.json file, which is autogenerated each time by bower. Used in lieu
+ of hashing a zipfile of the contents, since zipfiles are difficult to hash in
+ a stable manner.
+
+ Args:
+ hash_obj: an open hash object, e.g. hashlib.sha1().
+ path: path to the directory to hash.
+
+ Returns:
+ The passed-in hash_obj.
+ """
+ if not os.path.isdir(path):
+ raise ValueError('Not a directory: %s' % path)
+
+ path = os.path.abspath(path)
+ for root, dirs, files in os.walk(path):
+ dirs.sort()
+ for f in sorted(files):
+ if f == '.bower.json':
+ continue
+ p = os.path.join(root, f)
+ hash_obj.update(p[len(path)+1:])
+ hash_file(hash_obj, p)
+
+ return hash_obj