Working on compatibility with Create 6.

gradle/property_loader.gradle

@@ -0,0 +1,48 @@
+/*
+ This module can inject build properties from a JSON file. Each property in the
+ JSON file will be mapped to a build property using the key of that property.
+ Property keys ending with _comment will be skipped.
+
+ If a secretFile property exists and points to a valid JSON file that file will
+ be automatically loaded. You can manually load a file using the loadProperties
+ method.
+*/
+import groovy.json.JsonSlurper
+
+// Auto detects a secret file and injects it.
+if (project.rootProject.hasProperty("secretFile")) {
+    project.logger.lifecycle("Automatically loading properties from the secretFile")
+    final def secretsFile = project.rootProject.file(project.rootProject.getProperty("secretFile"))
+
+    if (secretsFile.exists() && secretsFile.name.endsWith(".json")) {
+        loadProperties(secretsFile)
+    }
+}
+
+// Loads properties using a specified json file.
+def loadProperties(propertyFile) {
+    if (propertyFile.exists()) {
+        propertyFile.withReader {
+            Map propMap = new JsonSlurper().parse it
+
+            for (entry in propMap) {
+
+                // Filter entries that use _comment in the key.
+                if (!entry.key.endsWith("_comment")) {
+
+                    project.ext.set(entry.key, entry.value)
+                }
+            }
+
+            project.logger.lifecycle("Successfully loaded " + propMap.size() + " properties")
+            propMap.clear()
+        }
+    } else {
+        project.logger.warn("The property file " + propertyFile.getName() + " could not be loaded. It does not exist.")
+    }
+}
+
+// Allows other scripts to use these methods.
+ext {
+    loadProperties = this.&loadProperties
+}