blob: e6e3bfa3da207e32182a62b598796d95ad7d95a8 [file] [log] [blame]
// Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// @dart=2.9
import 'dart:ffi';
import 'dart:io';
const arm = 'arm';
const arm64 = 'arm64';
const ia32 = 'ia32';
const x64 = 'x64';
// https://stackoverflow.com/questions/45125516/possible-values-for-uname-m
final _unames = {
'arm': arm,
'aarch64_be': arm64,
'aarch64': arm64,
'armv8b': arm64,
'armv8l': arm64,
'i386': ia32,
'i686': ia32,
'x86_64': x64,
};
String _checkRunningMode(String architecture) {
// Check if we're running in 32bit mode.
final int pointerSize = sizeOf<IntPtr>();
if (pointerSize == 4 && architecture == x64) return ia32;
if (pointerSize == 4 && architecture == arm64) return arm;
return architecture;
}
String _architecture() {
final String uname = Process.runSync('uname', ['-m']).stdout.trim();
final String architecture = _unames[uname];
if (architecture == null) {
throw Exception('Unrecognized architecture: "$uname"');
}
// Check if we're running in 32bit mode.
return _checkRunningMode(architecture);
}
String _platformPath(String name, {String path = ''}) {
if (Platform.isMacOS || Platform.isIOS) {
return '${path}mac/${_architecture()}/lib$name.dylib';
}
if (Platform.isWindows) {
return '${path}win/${_checkRunningMode(x64)}/$name.dll';
}
// Unknown platforms default to Unix implementation.
return '${path}linux/${_architecture()}/lib$name.so';
}
DynamicLibrary dlopenPlatformSpecific(String name, {String path}) {
final String fullPath = _platformPath(name, path: path);
return DynamicLibrary.open(fullPath);
}