Migrate DXF library to Gradle (processing#981)

Author: LalitNarayanYadav

java/build.gradle.kts

@@ -1,90 +1,30 @@
 plugins {
-    id("java")
+    java
 }
 
-repositories{
-    mavenCentral()
-    google()
-    maven { url = uri("https://jogamp.org/deployment/maven") }
-}
-
-sourceSets{
-    main{
-        java{
-            srcDirs("src")
-            exclude("processing/mode/java/preproc/**")
-        }
-    }
-    test{
-        java{
-            srcDirs("test")
-        }
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(17))
     }
 }
 
-dependencies{
-    implementation(project(":app"))
-    implementation(project(":core"))
-    implementation(project(":java:preprocessor"))
-
-    implementation(libs.eclipseJDT)
-    implementation(libs.eclipseJDTCompiler)
-    implementation(libs.classpathExplorer)
-    implementation(libs.netbeansSwing)
-    implementation(libs.ant)
-    implementation(libs.lsp4j)
-    implementation(libs.jsoup)
-    implementation(libs.antlr)
+val coreJar = file("../../../core/library/core.jar")
 
-    testImplementation(libs.junit)
-    testImplementation(libs.mockito)
+dependencies {
+    implementation(files(coreJar))
 }
 
-tasks.compileJava{
-    options.encoding = "UTF-8"
-}
-
-// LEGACY TASKS
-// Most of these are shims to be compatible with the old build system
-// They should be removed in the future, as we work towards making things more Gradle-native
-tasks.register<Copy>("extraResources"){
-    dependsOn(":java:copyCore")
-    from(".")
-    include("keywords.txt")
-    include("theme/**/*")
-    include("application/**/*")
-    into( layout.buildDirectory.dir("resources-bundled/common/modes/java"))
-}
-tasks.register<Copy>("copyCore"){
-    val coreProject = project(":core")
-    dependsOn(coreProject.tasks.jar)
-    from(coreProject.tasks.jar) {
-        include("core*.jar")
-    }
-    rename("core.+\\.jar", "core.jar")
-    into(coreProject.layout.projectDirectory.dir("library"))
-}
-
-val libraries = arrayOf("dxf","io","net","pdf","serial","svg")
-libraries.forEach { library ->
-    tasks.register<Copy>("library-$library-extraResources"){
-        val build = project(":java:libraries:$library").tasks.named("build")
-        build.configure {
-            dependsOn(":java:copyCore")
+tasks.register("checkCore") {
+    doFirst {
+        if (!coreJar.exists()) {
+            throw GradleException("Missing core.jar at $coreJar. Please build the core module first.")
         }
-        dependsOn(build)
-        from("libraries/$library")
-        include("*.properties")
-        include("library/**/*")
-        include("examples/**/*")
-        into( layout.buildDirectory.dir("resources-bundled/common/modes/java/libraries/$library"))
     }
-    tasks.named("extraResources"){ dependsOn("library-$library-extraResources") }
 }
-tasks.jar { dependsOn("extraResources") }
-tasks.processResources{ finalizedBy("extraResources") }
-tasks.compileTestJava{ finalizedBy("extraResources") }
 
-tasks.test {
-    useJUnit()
-}
+tasks.register<Jar>("dxfJar") {
+    dependsOn("checkCore", "classes")
+    archiveBaseName.set("dxf")
+    destinationDirectory.set(file("library"))
+    from(sourceSets.main.get().output)
+}

java/libraries/dxf/build.gradle.kts

@@ -30,8 +30,3 @@ tasks.register<Jar>("dxfJar") {
     from(sourceSets.main.get().output)
 }
 
-tasks.register("clean") {
-    doLast {
-        delete("build", "library/dxf.jar")
-    }
-}

java/libraries/dxf/build/tmp/dxfJar/MANIFEST.MF

@@ -0,0 +1,2 @@
+Manifest-Version: 1.0
+

settings.gradle.kts

@@ -1,3 +1,17 @@
+pluginManagement {
+    plugins {
+        id("org.gradle.toolchains.foojay-resolver-convention") version("0.7.0")
+    }
+    repositories {
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id("org.gradle.toolchains.foojay-resolver-convention") version "0.7.0"
+}
+
+rootProject.name = "processing"
 rootProject.name = "processing"
 include(
     "core",