Add task to generate locales_config.xml (#7754)

.gitignore

@@ -14,3 +14,6 @@ app/**/output.json
 
 # Hebrew assets are copied on build
 app/src/main/res/values-iw/
+
+# Generated
+locales_config.xml

app/build.gradle.kts

@@ -281,6 +281,8 @@ dependencies {
 }
 
 tasks {
+    val localesConfigTask = registerLocalesConfigTask(project)
+
     withType<Test> {
         useJUnitPlatform()
         testLogging {
@@ -313,7 +315,7 @@ tasks {
     }
 
     preBuild {
-        dependsOn(formatKotlin, copyHebrewStrings)
+        dependsOn(formatKotlin, copyHebrewStrings, localesConfigTask)
     }
 }
 

app/src/main/AndroidManifest.xml

@@ -27,6 +27,7 @@
         android:hardwareAccelerated="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
+        android:localeConfig="@xml/locales_config"
         android:largeHeap="true"
         android:requestLegacyExternalStorage="true"
         android:roundIcon="@mipmap/ic_launcher_round"

buildSrc/build.gradle.kts

@@ -1,6 +1,14 @@
 plugins {
     `kotlin-dsl`
 }
+
+dependencies {
+    compileOnly("org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinLibs.versions.kotlin.version.get()}")
+
+    implementation(gradleApi())
+}
+
 repositories {
     mavenCentral()
+    google()
 }

buildSrc/settings.gradle.kts

@@ -0,0 +1,7 @@
+dependencyResolutionManagement {
+    versionCatalogs {
+        create("kotlinLibs") {
+            from(files("../gradle/kotlinx.versions.toml"))
+        }
+    }
+}

buildSrc/src/main/kotlin/LocalesConfigPlugin.kt

@@ -0,0 +1,40 @@
+import org.gradle.api.Project
+import org.gradle.api.Task
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.kotlin.dsl.TaskContainerScope
+
+fun TaskContainerScope.registerLocalesConfigTask(project: Project): TaskProvider<Task> {
+    return with(project) {
+        register("generateLocalesConfig") {
+            val emptyResourcesElement = "<resources>\\s*<\\/resources>|<resources\\/>".toRegex()
+            val valuesPrefix = "values-?".toRegex()
+
+            val languages = fileTree("$projectDir/src/main/res/")
+                .matching {
+                    include("**/strings.xml")
+                }
+                .filterNot {
+                    it.readText().contains(emptyResourcesElement)
+                }
+                .joinToString(separator = "\n") {
+                    val language = it.parentFile.name
+                        .replace(valuesPrefix, "")
+                        .takeIf(String::isNotBlank) ?: "en"
+                    "   <locale android:name=\"$language\"/>"
+                }
+
+
+            val content = """
+<?xml version="1.0" encoding="utf-8"?>
+<locale-config xmlns:android="http://schemas.android.com/apk/res/android">
+$languages
+</locale-config>
+    """.trimIndent()
+
+            val localeFile = file("$projectDir/src/main/res/xml/locales_config.xml")
+            localeFile.parentFile.mkdirs()
+            localeFile.writeText(content)
+        }
+    }
+}
+