File: osxbundle.py

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#!/usr/bin/env python3
import fileinput
import os
import re
import shutil
import subprocess
from optparse import OptionParser

import dylib_unhell


def bundle_path(binary_name):
    return f"{binary_name}.app"

def bundle_name(binary_name):
    return os.path.basename(bundle_path(binary_name))

def target_plist(binary_name):
    return os.path.join(bundle_path(binary_name), "Contents", "Info.plist")

def target_directory(binary_name):
    return os.path.join(bundle_path(binary_name), "Contents", "MacOS")

def target_binary(binary_name):
    return os.path.join(target_directory(binary_name),
                        os.path.basename(binary_name))

def copy_bundle(binary_name, src_path):
    if os.path.isdir(bundle_path(binary_name)):
        shutil.rmtree(bundle_path(binary_name))
    shutil.copytree(
        os.path.join(src_path, "TOOLS", "osxbundle", bundle_name(binary_name)),
        bundle_path(binary_name))

def copy_binary(binary_name):
    shutil.copy(binary_name, target_binary(binary_name))

def apply_plist_template(plist_file, version, category):
    print(">> setting bundle category to " + category)
    for line in fileinput.input(plist_file, inplace=True):
        print(line.rstrip().replace("${VERSION}", version).replace("${CATEGORY}", category))

def sign_bundle(binary_name):
    sign_directories = ["Contents/Frameworks", "Contents/MacOS"]
    for sign_dir in sign_directories:
        resolved_dir = os.path.join(bundle_path(binary_name), sign_dir)
        for root, _dirs, files in os.walk(resolved_dir):
            for f in files:
                path = os.path.join(root, f)
                subprocess.run(["codesign", "--force", "-s", "-", path])
    subprocess.run(["codesign", "--force", "-s", "-", bundle_path(binary_name)])

def bundle_version(build_path):
    version = "UNKNOWN"
    version_h_path = os.path.join(build_path, "common", "version.h")
    if os.path.exists(version_h_path):
        x = open(version_h_path)
        version = re.findall(r"#define\s+VERSION\s+\"v(.+)\"", x.read())[0]
        x.close()
    return version

def main():
    usage = "usage: %prog [options] arg"
    parser = OptionParser(usage)
    parser.add_option("-s", "--skip-deps", action="store_false", dest="deps",
                      default=True,
                      help="don't bundle the dependencies")
    parser.add_option("-c", "--category", action="store", dest="category",
                      type="choice", choices=["video", "games"], default="video",
                      help="sets bundle category")

    (options, args) = parser.parse_args()

    if len(args) < 1 or len(args) > 2:
        parser.error("incorrect number of arguments")
    else:
        binary_name = args[0]
        build_path = os.path.dirname(binary_name)
        src_path = args[1] if len(args) > 1 else "."

    version = bundle_version(build_path).rstrip()

    print(f"Creating macOS application bundle (version: {version})...")
    print("> copying bundle skeleton")
    copy_bundle(binary_name, src_path)
    print("> copying binary")
    copy_binary(binary_name)
    print("> generating Info.plist")
    apply_plist_template(target_plist(binary_name), version, options.category)

    if options.deps:
        print("> bundling dependencies")
        dylib_unhell.process(target_binary(binary_name))

    print("> signing bundle with ad-hoc pseudo identity")
    sign_bundle(binary_name)

    print("done.")

if __name__ == "__main__":
    main()