Add release_utils.py that automaticlaly updates the version.txt (#101)

Summary:
Pull Request resolved: #101

Use fairseq/release_utils.py (https://github.com/facebookresearch/fairseq/blob/main/release_utils.py) as a reference to update version.txt programatically.

In the next diff, I'll add .github/workflow/release.yml to use this functionality

Reviewed By: georges-berenger

Differential Revision: D41759248

fbshipit-source-id: 7ad4df52eeacbbbee462cb24d5e935a27920031b

release_utils.py

@@ -0,0 +1,80 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# 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 argparse
+from typing import Tuple
+
+
+def get_next_version(release_type) -> Tuple[Tuple[int, int, int], str, str]:
+    current_version = open("version.txt", "r").read().strip()
+    version_list = [int(x) for x in current_version.strip("'").split(".")]
+    major, minor, patch = version_list[0], version_list[1], version_list[2]
+    if release_type == "patch":
+        patch += 1
+    elif release_type == "minor":
+        minor += 1
+        patch = 0
+    elif release_type == "major":
+        major += 1
+        minor = patch = 0
+    else:
+        raise ValueError(
+            "Incorrect release type specified. Acceptable types are major, minor and patch."
+        )
+
+    new_version_tuple = (major, minor, patch)
+    new_version_str = ".".join([str(x) for x in new_version_tuple])
+    new_tag_str = "v" + new_version_str
+    return new_version_tuple, new_version_str, new_tag_str
+
+
+def update_version(new_version_tuple) -> None:
+    """
+    given the current version, update the version to the
+    next version depending on the type of release.
+    """
+
+    with open("version.txt", "w") as writer:
+        writer.write(".".join([str(x) for x in new_version_tuple]))
+
+
+def main(args):
+    if args.release_type in ["major", "minor", "patch"]:
+        new_version_tuple, new_version, new_tag = get_next_version(args.release_type)
+    else:
+        raise ValueError("Incorrect release type specified")
+
+    if args.update_version:
+        update_version(new_version_tuple)
+
+    print(new_version, new_tag)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Versioning utils")
+    parser.add_argument(
+        "--release-type",
+        type=str,
+        required=True,
+        help="type of release = major/minor/patch",
+    )
+    parser.add_argument(
+        "--update-version",
+        action="store_true",
+        required=False,
+        help="updates the version in version.txt",
+    )
+
+    args = parser.parse_args()
+    main(args)