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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
package import Foundation
import LanguageServerProtocolExtensions
import TSCExtensions
import class TSCBasic.Process
#if os(Windows)
import WinSDK
#endif
// Returns the path to the given tool, as found by `xcrun --find` on macOS, or `which` on Linux.
package func findTool(name: String) async -> URL? {
#if os(macOS)
let cmd = ["/usr/bin/xcrun", "--find", name]
#elseif os(Windows)
var buf = [WCHAR](repeating: 0, count: Int(MAX_PATH))
GetWindowsDirectoryW(&buf, DWORD(MAX_PATH))
let wherePath = String(decodingCString: &buf, as: UTF16.self)
.appendingPathComponent("system32")
.appendingPathComponent("where.exe")
let cmd = [wherePath, name]
#elseif os(Android)
let cmd = ["/system/bin/which", name]
#else
let cmd = ["/usr/bin/which", name]
#endif
guard let result = try? await Process.run(arguments: cmd, workingDirectory: nil) else {
return nil
}
guard var path = try? String(bytes: result.output.get(), encoding: .utf8) else {
return nil
}
#if os(Windows)
// where.exe returns all files that match the name. We only care about the first one.
if let newlineIndex = path.firstIndex(where: \.isNewline) {
path = String(path[..<newlineIndex])
}
#endif
path = path.trimmingCharacters(in: .whitespacesAndNewlines)
if path.isEmpty {
return nil
}
return URL(fileURLWithPath: path, isDirectory: false)
}
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