#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-or-later

# macOS utility to remove all `rpaths` and add a new one.

import os
import re
import subprocess
import sys


# Strip version numbers from dependenciesm macOS notarizatiom fails
# with version symlinks.
def strip_lib_version(name):
    name = re.sub(r'(\.[0-9]+)+.dylib', '.dylib', name)
    name = re.sub(r'(\.[0-9]+)+.so', '.so', name)
    name = re.sub(r'(\.[0-9]+)+.cpython', '.cpython', name)
    return name


rpath = sys.argv[1]
file = sys.argv[2]

# Find existing rpaths and delete them one by one.
p = subprocess.run(['otool', '-l', file], capture_output=True)
tokens = p.stdout.split()

for i, token in enumerate(tokens):
    if token == b'LC_RPATH':
        old_rpath = tokens[i + 4]
        subprocess.run(['install_name_tool', '-delete_rpath', old_rpath, file])

subprocess.run(['install_name_tool', '-add_rpath', rpath, file])

# Strip version from dependencies.
p = subprocess.run(['otool', '-L', file], capture_output=True)
tokens = p.stdout.split()
for i, token in enumerate(tokens):
    token = token.decode("utf-8")
    if token.startswith("@rpath"):
        new_token = strip_lib_version(token)
        subprocess.run(['install_name_tool', '-change', token, new_token, file])

# Strip version from library itself.
new_file = strip_lib_version(file)
new_id = '@rpath/' + os.path.basename(new_file)
os.rename(file, new_file)
subprocess.run(['install_name_tool', '-id', new_id, new_file])