Expand support of Apple platforms

Author: lauzadis

runtime/runtime-core/common/src/aws/smithy/kotlin/runtime/util/Platform.kt

@@ -6,6 +6,7 @@
 package aws.smithy.kotlin.runtime.util
 
 import aws.smithy.kotlin.runtime.InternalApi
+import kotlinx.coroutines.awaitAll
 
 public interface PlatformEnvironProvider :
     EnvironmentProvider,
@@ -58,6 +59,9 @@ public enum class OsFamily {
     Windows,
     Android,
     Ios,
+    IpadOs,
+    TvOs,
+    WatchOs,
     Unknown,
     ;
 
@@ -67,6 +71,9 @@ public enum class OsFamily {
         Windows -> "windows"
         Android -> "android"
         Ios -> "ios"
+        IpadOs -> "ipados"
+        TvOs -> "tvos"
+        WatchOs -> "watchos"
         Unknown -> "unknown"
     }
 }

runtime/runtime-core/native/src/aws/smithy/kotlin/runtime/util/PlatformNative.kt

@@ -74,14 +74,17 @@ internal actual object SystemDefaultProvider : PlatformProvider {
 
         val sysName = utsname.sysname.toKString().lowercase()
         val version = utsname.release.toKString()
-        val machine = utsname.machine.toKString() // Helps differentiate iOS/macOS
+        val machine = utsname.machine.toKString().lowercase() // Helps differentiate Apple platforms
 
         val family = when {
             sysName.contains("darwin") -> {
-                if (machine.startsWith("iPhone") || machine.startsWith("iPad")) {
-                    OsFamily.Ios
-                } else {
-                    OsFamily.MacOs
+                when {
+                    machine.startsWith("iphone") -> OsFamily.Ios
+                    // TODO Validate that iPadOS/tvOS/watchOS resolves correctly on each of these devices
+                    machine.startsWith("ipad") -> OsFamily.IpadOs
+                    machine.startsWith("tv") -> OsFamily.TvOs
+                    machine.startsWith("watch") -> OsFamily.WatchOs
+                    else -> OsFamily.MacOs
                 }
             }
             sysName.contains("linux") -> OsFamily.Linux