Simplify generate-changelog-file rule

The debian package changlog file doesn't have to contain the real CHANGELOG.md.
Parsing change log is error-prone and caused our release job to fail everytime,
so here we simplified the script for generating changelog.

Fix https://github.com/bazelbuild/bazel/issues/4530

Change-Id: I8adc5a98def5709ea57f9edbed9f0cf772a48d76
PiperOrigin-RevId: 183651058

1 files changed, 42 insertions, 0 deletions

diff --git a/scripts/packages/debian/generate_changelog.py b/scripts/packages/debian/generate_changelog.py
new file mode 100644
index 0000000000..df4d903429
--- /dev/null
+++ b/scripts/packages/debian/generate_changelog.py
@@ -0,0 +1,42 @@
+# pylint: disable=g-bad-file-header
+# Copyright 2015 The Bazel Authors. All rights reserved.
+#
+# 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.
+"""This tool generates a debian changelog file."""
+
+from datetime import datetime
+import sys
+
+
+def main(input_file, output_file):
+  changelog_out = open(output_file, "w")
+  version = None
+  with open(input_file, "r") as status_file:
+    for line in status_file:
+      line = line.strip()
+      if line.startswith("RELEASE_NAME "):
+        version = line[len("RELEASE_NAME "):].strip()
+
+  if version:
+    changelog_out.write("bazel (%s) unstable; urgency=low\n" % version)
+    changelog_out.write("\n    Bumped Bazel version to %s.\n" % version)
+  else:
+    changelog_out.write("bazel (@HEAD) unstable; urgency=low\n")
+    changelog_out.write("\n    Development version\n")
+  changelog_out.write(
+      "\n -- The Bazel Authors <bazel-dev@googlegroups.com>  %s\n\n" %
+      datetime.now().strftime("%a, %d %b %Y %H:%M:%S +0100"))
+
+
+if __name__ == "__main__":
+  main(sys.argv[1], sys.argv[2])