WIP Allow loading iOS configuration from local.properties

Author: opatry

buildSrc/src/main/kotlin/IosTargetsExt.kt

@@ -21,15 +21,33 @@
  */
 
 import org.gradle.api.Project
+import java.io.File
+import java.util.*
 
 // can't use by lazy, we need Project.findProperty not accessible there
 @Suppress("ObjectPropertyName")
 private lateinit var _iosTargets: List<String>
 
+private val localProperties = Properties()
+private fun Project.getIosTargetedConfiguration(): String? {
+    return findProperty("ios.target") as? String
+        ?: run {
+            if (localProperties.isEmpty) {
+                val localPropertiesFile = File("local.properties")
+                if (localPropertiesFile.isFile) {
+                    localPropertiesFile.inputStream().use { reader ->
+                        localProperties.load(reader)
+                    }
+                }
+            }
+            localProperties.getProperty("ios.target")
+        }
+}
+
 val Project.iosTargets: List<String>
     get() {
         if (!::_iosTargets.isInitialized) {
-            _iosTargets = when (findProperty("ios.target") as? String) {
+            _iosTargets = when (getIosTargetedConfiguration()) {
                 // We ignore "iosX64", not considered as a use case
                 "all" -> listOf("iosArm64", "iosSimulatorArm64")
                 "simulator" -> listOf("iosSimulatorArm64")