Introduce a gradle spotbugs plugin (#242)

Author: yutaro-sakamoto

.github/workflows/cicd.yml

@@ -96,8 +96,6 @@ jobs:
         run: |
           sudo apt-get update -y
           sudo apt-get install -y clang-format cppcheck
-          curl -L -o spotbugs-4.7.3.zip https://github.com/spotbugs/spotbugs/releases/download/4.7.3/spotbugs-4.7.3.zip
-          unzip spotbugs-4.7.3.zip
 
       - name: Install opensource COBOL 4J
         run: |
@@ -110,15 +108,16 @@ jobs:
         run: |
           ./check-format
 
-      - name: Run SpotBugs
+      - name: Run SpotBugs (ignore results)
         run: |
-          java -jar spotbugs-4.7.3/lib/spotbugs.jar -textui libcobj/app/build/classes
+          cd libcobj
+          ./gradlew spotbugsMain || true
 
       - name: Run PMD
         run: |
           cd libcobj
           ./gradlew pmdMain
 
-      - name: Run cppcheck
+      - name: Run cppcheck (ignore results)
         run: |
           cd cobj && cppcheck cobj.c cobj.h codegen.c config.c error.c field.c pplex.c ppparse.c ppparse.h reserved.c tree.c tree.h typeck.c

libcobj/app/build.gradle.kts

@@ -7,6 +7,7 @@ plugins {
     id("com.github.sherter.google-java-format") version "0.9"
     id("maven-publish")
     pmd
+    id("com.github.spotbugs") version "6.0.0-rc.2"
 }
 
 repositories {
@@ -15,8 +16,8 @@ repositories {
 
 dependencies {
     implementation("com.google.guava:guava:31.1-jre")
-
     implementation("org.xerial:sqlite-jdbc:3.30.1")
+    spotbugs("com.github.spotbugs:spotbugs:4.8.0")
 }
 
 java {