Apple M1 chipset support for cwebp

booster-kotlinx/src/main/kotlin/com/didiglobal/booster/kotlinx/OS.kt

@@ -4,7 +4,11 @@ object OS {
 
     val name: String = System.getProperty("os.name", "").lowercase()
 
-    val arch: String = System.getProperty("os.arch", "").lowercase()
+    val arch: String = try {
+        "arch".execute().stdout.trim().lowercase()
+    } catch (e: Throwable) {
+        System.getProperty("os.arch", "").lowercase()
+    }
 
     val version = object : Comparable<String> {
 
@@ -62,8 +66,6 @@ object OS {
 
     fun isMac() = name.startsWith("mac")
 
-    fun isArm64Chip() = arch.startsWith("aarch64")
-
     fun isWindows() = name.startsWith("windows")
 
 }

booster-task-compression-cwebp/src/main/kotlin/com/didiglobal/booster/task/compression/cwebp/Cwebp.kt

@@ -57,13 +57,16 @@ internal val PREBUILT_CWEBP_EXECUTABLE = "bin/" + when {
         "x64", "x86_64", "amd64" -> "x64"
         else -> TODO("Unsupported architecture ${OS.arch}")
     }
-    OS.isMac() -> "macosx/" + when {
-        OS.isArm64Chip() -> "arm64"
-        OS.version >= "10.15" -> "10.15"
-        OS.version >= "10.14" -> "10.14"
-        OS.version >= "10.13" -> "10.13"
-        OS.version >= "10.12" -> "10.12"
-        else -> TODO("Unsupported system version ${OS.version}")
+    OS.isMac() -> "macosx/" + when (OS.arch) {
+        "arm64" -> "arm64"
+        "x86_64" -> "x86_64/" + when {
+            OS.version >= "10.15" -> "10.15"
+            OS.version >= "10.14" -> "10.14"
+            OS.version >= "10.13" -> "10.13"
+            OS.version >= "10.12" -> "10.12"
+            else -> TODO("Unsupported system version ${OS.version}")
+        }
+        else -> TODO("Unsupported architecture ${OS.arch}")
     }
     OS.isWindows() -> "windows/" + when (OS.arch) {
         "x64", "x86_64", "amd64" -> "x64"