Add tools/create-release.py

tools/create-release.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+#
+#  Usage: ./tools/create-release.py v0.1.0
+#
+import argparse
+import os
+import sys
+import re
+import subprocess
+
+def main():
+    parser = argparse.ArgumentParser(description="Creates a new release")
+    parser.add_argument("release", help="The release version (e.g. 'v0.1.0').")
+    args = parser.parse_args()
+
+    prev_tag = subprocess.check_output(["git", "tag", "--sort=-creatordate"], text=True).splitlines()[0]
+    next_tag = args.release
+
+    log = subprocess.check_output(["git", "shortlog", f"{prev_tag}..HEAD"], text=True)
+    print("*")
+    print(f"*  Previous release: {prev_tag}")
+    print(f"*  Next release:     {next_tag}")
+    print("*")
+    print()
+
+    if not next_tag.startswith("v"):
+        sys.exit("The next release must start with 'v'.")
+
+    if input(f"Is this correct? (y/n) ").lower() != "y":
+        print("Aborting.")
+        return
+
+    print("==> Updating crate versions...")
+    for root, dirs, files in os.walk("."):
+        for basename in files:
+            if basename != "Cargo.toml":
+                continue
+            path = os.path.join(root, basename)
+            body = open(path).read()
+            if "[package]" not in body:
+                continue
+
+            new_ver = f"version = \"{next_tag.replace('v', '')}\""
+            body = re.sub(f"^version\s+=\s+\"[^\"]+?\"", new_ver, body, count=1, flags=re.MULTILINE)
+            if new_ver not in body:
+                sys.exit(f"failed update the version in {path}")
+            open(path, "w").write(body)
+
+    print(f"==> Building the kernel")
+    subprocess.run(["make", "RELEASE=1", "build"], check=True)
+
+    print(f"==> Creating {next_tag}.log")
+    open(f"{next_tag}.log", "w").write(log)
+
+    print(f"==> Creating a commit for {next_tag}")
+    subprocess.run(["git", "add", "."], check=True)
+    subprocess.run(["git", "commit", "-m", next_tag], check=True)
+    subprocess.run(["git", "tag", next_tag], check=True)
+
+if __name__ == "__main__":
+    main()