Add windows vendor and tests

Author: brianmichel

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+[*.swift]
+indent_style = tab
+indent_size = 4

Sources/Segment/Plugins/Platforms/Vendors/WindowsUtils.swift

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+import Foundation
+
+#if os(Windows)
+
+import WinSDK
+
+internal class WindowsVendorSystem: VendorSystem {
+	override var manufacturer: String {
+		return "unknown"
+	}
+
+	override var type: String {
+		return "Windows"
+	}
+
+	override var model: String {
+		return "unknown"
+	}
+
+	override var name: String {
+		return "unknown"
+	}
+
+	override var identifierForVendor: String? {
+		return nil
+	}
+
+	override var systemName: String {
+		// If the name is larger than 256 characters, we might get an error.
+		var size: DWORD = 256
+		var buffer = [CHAR](repeating: 0, count: Int(size))
+		guard GetComputerNameA(&buffer, &size) else {
+			return "unknown"
+		}
+
+		return String(cString: buffer)
+	}
+
+	override var systemVersion: String {
+		let version = ProcessInfo.processInfo.operatingSystemVersion
+		return "\(version.majorVersion).\(version.minorVersion).\(version.patchVersion)"
+	}
+
+	override var screenSize: ScreenSize {
+		var rect: RECT = .init(left: 0, top: 0, right: 0, bottom: 0)
+		guard SystemParametersInfoA(UInt32(SPI_GETWORKAREA), 0, &rect, 0) else {
+			return ScreenSize(width: 0, height: 0)
+		}
+
+		return ScreenSize(width: rect.width, height: rect.height)
+	}
+
+	override var userAgent: String? {
+		return "unknown"
+	}
+
+	override var connection: ConnectionStatus {
+		return .unknown
+	}
+
+	override var requiredPlugins: [any PlatformPlugin] {
+		[]
+	}
+}
+
+extension RECT {
+	internal var width: Double {
+		Double(right - left)
+	}
+
+	internal var height: Double {
+		Double(bottom - top)
+	}
+}
+#endif

Tests/Segment-Tests/WindowsVendorSystem_Tests.swift

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+import XCTest
+@testable import Segment
+
+#if os(Windows)
+
+final class WindowsVendorSystem_Tests: XCTestCase {
+	func testScreenSizeReturnsNonEmpty() {
+		let system = WindowsVendorSystem()
+
+		let screen = system.screenSize
+
+		XCTAssertNotEqual(screen.width, 0)
+		XCTAssertNotEqual(screen.height, 0)
+	}
+
+	func testNameReturnsNonEmpty() {
+		let system = WindowsVendorSystem()
+
+		let name = system.systemName
+
+		XCTAssertNotEqual(name, "unknown")
+	}
+
+	func testVersionNumberIsWellFormatted() {
+		let system = WindowsVendorSystem()
+
+		let version = system.systemVersion
+
+		let components = version.split(separator: ".")
+
+		XCTAssertEqual(components.count, 3)
+
+		// Ensure that the version components are all numeric
+		XCTAssertTrue(components.allSatisfy({ Int($0) != nil }))
+	}
+}
+
+#endif