chore(release): add Swift packaging scripts

Author: reez

scripts/swift_create_xcframework_archive.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+XCFRAMEWORK_PATH="${ROOT_DIR}/cktap-swift/cktapFFI.xcframework"
+ZIP_PATH="${ROOT_DIR}/cktap-swift/cktapFFI.xcframework.zip"
+
+if [ ! -d "${XCFRAMEWORK_PATH}" ]; then
+    echo "Missing xcframework at ${XCFRAMEWORK_PATH}" >&2
+    exit 1
+fi
+
+ditto -c -k --sequesterRsrc --keepParent "${XCFRAMEWORK_PATH}" "${ZIP_PATH}"
+CHECKSUM="$(swift package compute-checksum "${ZIP_PATH}")"
+echo "New checksum: ${CHECKSUM}"
+
+python3 "${ROOT_DIR}/scripts/swift_update_package_checksum.py" --checksum "${CHECKSUM}"

scripts/swift_update_package_checksum.py

@@ -0,0 +1,100 @@
+import argparse
+import json
+import os
+import re
+import sys
+
+
+def run(new_checksum: str = None, new_tag: str = None):
+    if new_checksum is None and new_tag is None:
+        print("At least one of --checksum or --tag arguments must be provided.", file=sys.stderr)
+        sys.exit(1)
+
+    if new_checksum is not None:
+        if not new_checksum.isalnum():
+            print("Checksum must be alphanumeric.", file=sys.stderr)
+            sys.exit(1)
+
+        if not new_checksum.islower():
+            print("Checksum must be lowercase.", file=sys.stderr)
+            sys.exit(1)
+
+        try:
+            int(new_checksum, 16)
+        except ValueError:
+            print("Checksum must be hexadecimal.", file=sys.stderr)
+            sys.exit(1)
+
+    if new_tag is not None:
+        if new_tag.strip() != new_tag:
+            print("Tag must not contain any whitespace.", file=sys.stderr)
+            sys.exit(1)
+
+        tag_regex = re.compile(r"^v?\d+[.]\d+[.]\d+$")
+        tag_match = tag_regex.match(new_tag)
+        if tag_match is None:
+            print("Tag must adhere to vX.Y.Z or X.Y.Z format.", file=sys.stderr)
+            sys.exit(1)
+
+    settings = [
+        {"variable_name": "checksum", "value": new_checksum},
+        {"variable_name": "tag", "value": new_tag},
+    ]
+
+    package_file_path = os.path.realpath(
+        os.path.join(os.path.dirname(__file__), "../Package.swift")
+    )
+
+    try:
+        with open(package_file_path, "r") as package_file_handle:
+            package_file = package_file_handle.read()
+    except OSError:
+        print("Failed to read Package.swift file.", file=sys.stderr)
+        sys.exit(1)
+
+    updated_package_file = package_file
+    for current_setting in settings:
+        current_variable_name = current_setting["variable_name"]
+        new_value = current_setting["value"]
+        if new_value is None:
+            continue
+
+        print(f"setting {current_variable_name} (JSON-serialization):")
+        print(json.dumps(new_value))
+
+        regex = re.compile(rf"(let\s+{current_variable_name}\s*=\s*)(.*)")
+        match = regex.search(updated_package_file)
+        if match is None:
+            print(
+                f"Failed to find {current_variable_name} in Package.swift.",
+                file=sys.stderr,
+            )
+            sys.exit(1)
+
+        previous_value = match.group(2)
+        updated_package_file = updated_package_file.replace(previous_value, f'"{new_value}"')
+
+    with open(package_file_path, "w") as package_file_handle:
+        package_file_handle.write(updated_package_file)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        description="Update Swift package checksum and tag."
+    )
+    parser.add_argument(
+        "--checksum",
+        type=str,
+        help="new checksum of cktapFFI.xcframework.zip",
+        required=False,
+        default=None,
+    )
+    parser.add_argument(
+        "--tag",
+        type=str,
+        help="new release tag (vX.Y.Z or X.Y.Z)",
+        required=False,
+        default=None,
+    )
+    args = parser.parse_args()
+    run(new_checksum=args.checksum, new_tag=args.tag)