Reformat code

Apply automatic code formatting using google-java-format and ktfmt. Enforce the coding standards in CI.

.github/workflows/gradle.yml

@@ -37,6 +37,11 @@ jobs:
         run: |
           git_hash=$(git rev-parse --short "$GITHUB_SHA")
           echo "git_hash=$git_hash" >> $GITHUB_ENV
+      - name: Check format
+        uses: gradle/actions/setup-gradle@v3
+        with:
+          build-root-directory: play-validations
+          arguments: spotlessCheck
       - name: Build memory-footprint.jar
         uses: gradle/actions/setup-gradle@v3
         with:
@@ -84,6 +89,11 @@ jobs:
         run: |
           git_hash=$(git rev-parse --short "$GITHUB_SHA")
           echo "git_hash=$git_hash" >> $GITHUB_ENV
+      - name: Check format
+        uses: gradle/actions/setup-gradle@v3
+        with:
+          build-root-directory: tools
+          arguments: spotlessCheck
       - name: Build wff-optimizer.jar
         uses: gradle/actions/setup-gradle@v3
         with:

README.md

@@ -42,6 +42,13 @@ optimizing aspects of your WFF XML and your resources.
 
 For WFF samples, please see the [Wear OS Samples repository][samples] on GitHub.
 
+## Developer Considerations
+
+### Formatting
+
+This codebase is automatically formatted using [spotless](https://github.com/diffplug/spotless) To
+reformat, from the project root directory, run `./gradlew spotlessApply`.
+
 ## License
 
 Watch Face Format is distributed under the Apache 2.0 license, see the
@@ -55,4 +62,4 @@ Watch Face Format is distributed under the Apache 2.0 license, see the
 [xsd-specs]: third_party/wff/specification/documents/1/
 [xsd-validator]: third_party/wff/README.md
 [wff-features]: https://developer.android.com/training/wearables/wff/features
-[optimizer]: tools/wff-optimizer/
+[optimizer]: tools/wff-optimizer/

play-validations/build.gradle

@@ -27,9 +27,25 @@ buildscript {
     }
 }
 
+plugins {
+    id "com.diffplug.spotless" version "6.25.0" apply false
+}
+
 allprojects { project ->
     repositories {
         google()
         mavenCentral()
     }
+
+    // Ignore third party code
+    if (project.name != 'validator') {
+        apply plugin: 'com.diffplug.spotless'
+        spotless {
+            java {
+                target("src/**/*.java")
+                googleJavaFormat().aosp().reflowLongStrings()
+                removeUnusedImports()
+            }
+        }
+    }
 }

play-validations/memory-footprint/src/main/java/com/google/wear/watchface/dfx/memory/ActiveMemoryFootprintCalculator.java

@@ -3,9 +3,8 @@
 import static com.google.wear.watchface.dfx.memory.DrawableResourceDetails.findInMap;
 import static com.google.wear.watchface.dfx.memory.WatchFaceDocuments.findSceneNode;
 
-import org.w3c.dom.Document;
-
 import java.util.Map;
+import org.w3c.dom.Document;
 
 /** Computes the memory footprint of a watch face in active. */
 public class ActiveMemoryFootprintCalculator {

play-validations/memory-footprint/src/main/java/com/google/wear/watchface/dfx/memory/AmbientMemoryFootprintCalculator.java

@@ -18,21 +18,18 @@
 
 import static com.google.wear.watchface.dfx.memory.WatchFaceDocuments.findSceneNode;
 import static com.google.wear.watchface.dfx.memory.WatchFaceDocuments.getNodeAttribute;
-
 import static java.lang.Math.min;
 import static java.util.stream.Collectors.toSet;
 
 import com.google.common.collect.ImmutableList;
-
-import org.w3c.dom.Document;
-import org.w3c.dom.Node;
-import org.w3c.dom.NodeList;
-
 import java.util.ArrayDeque;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
 
 /**
  * Computes the memory footprint of a watch face in ambient.

play-validations/memory-footprint/src/main/java/com/google/wear/watchface/dfx/memory/AndroidResource.java

@@ -5,11 +5,10 @@
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-/**
- * Represents a resource, from an AAB or APK.
- */
+/** Represents a resource, from an AAB or APK. */
 public class AndroidResource {
-    private static final Pattern VALID_RESOURCE_PATH = Pattern.compile(".*res/([^-/]+).*/([^.]+)(\\.|)(.*|)$");
+    private static final Pattern VALID_RESOURCE_PATH =
+            Pattern.compile(".*res/([^-/]+).*/([^.]+)(\\.|)(.*|)$");
     private static final int VALID_RESOURCE_GROUPS = 4;
 
     // Resource type, for example "raw", "asset", "drawable" etc.
@@ -33,8 +32,7 @@ public AndroidResource(
             String resourceName,
             String extension,
             Path filePath,
-            byte[] data
-    ) {
+            byte[] data) {
         this.resourceType = resourceType;
         this.resourceName = resourceName;
         this.extension = extension;
@@ -60,13 +58,21 @@ public Boolean isWatchFaceXml() {
         return "xml".equals(extension) && "raw".equals(resourceType);
     }
 
-    public Boolean isDrawable() { return "drawable".equals(resourceType); }
+    public Boolean isDrawable() {
+        return "drawable".equals(resourceType);
+    }
 
-    public Boolean isFont() { return "font".equals(resourceType); }
+    public Boolean isFont() {
+        return "font".equals(resourceType);
+    }
 
-    public Boolean isAsset() { return "asset".equals(resourceType); }
+    public Boolean isAsset() {
+        return "asset".equals(resourceType);
+    }
 
-    public Boolean isRaw() { return "raw".equals(resourceType); }
+    public Boolean isRaw() {
+        return "raw".equals(resourceType);
+    }
 
     static AndroidResource fromPath(Path filePath, byte[] data) {
         String pathWithFwdSlashes = filePath.toString().replace('\\', '/');
@@ -75,13 +81,7 @@ static AndroidResource fromPath(Path filePath, byte[] data) {
             String resType = m.group(1);
             String resName = m.group(2);
             String ext = m.group(4);
-            return new AndroidResource(
-                    resType,
-                    resName,
-                    ext,
-                    filePath,
-                    data
-            );
+            return new AndroidResource(resType, resName, ext, filePath, data);
         }
         throw new RuntimeException("Not a valid resource file: " + m.matches());
     }