Add script to create Swift xcframework archive and update Package.swift

scripts/create_xcframework_archive.sh

@@ -0,0 +1,4 @@
+ditto -c -k --sequesterRsrc --keepParent ./bindings/swift/LDKNodeFFI.xcframework ./bindings/swift/LDKNodeFFI.xcframework.zip || exit 1
+CHECKSUM=`swift package compute-checksum ./bindings/swift/LDKNodeFFI.xcframework.zip` || exit 1
+echo "New checksum: $CHECKSUM" || exit 1
+python3 ./scripts/update_swift_package_checksum.py --checksum "${CHECKSUM}" || exit 1

scripts/update_swift_package_checksum.py

@@ -0,0 +1,81 @@
+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:
+			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)
+
+		tag_regex = re.compile("^\d+[.]\d+[.]\d+$")
+		tag_match = tag_regex.match(new_tag)
+		if tag_match is None:
+			print('Tag must adhere to x.x.x major/minor/patch format.', file=sys.stderr)
+
+	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'))
+	print(package_file_path)
+
+
+
+	original_package_file = None
+	try:
+		with open(package_file_path, 'r') as package_file_handle:
+			original_package_file = package_file_handle.read()
+	except:
+		print('Failed to read Package.swift file.', file=sys.stderr)
+		sys.exit(1)
+
+	package_file = original_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(f'(let[\s]+{current_variable_name}[\s]*=[\s]*)(.*)')
+
+		previous_value = regex.search(package_file).group(2)
+		# new_package_file = checksum_regex.sub(f'\g<1>"{new_checksum}"', package_file)
+		package_file = package_file.replace(previous_value, f'"{new_value}"')
+
+	with open(package_file_path, "w") as f:
+		f.write(package_file)
+
+
+
+if __name__ == '__main__':
+	parser = argparse.ArgumentParser(description='Process some integers.')
+	parser.add_argument('--checksum', type=str, help='new checksum of LDKNode.xcframework.zip', required=False, default=None)
+	parser.add_argument('--tag', type=str, help='new release tag', required=False, default=None)
+	args = parser.parse_args()
+	run(new_checksum=args.checksum, new_tag=args.tag)