Migrated the svg library from Ant-based build.xml to Gradle build.gradle.kts

java/libraries/svg/build.gradle.kts

@@ -1 +1,138 @@
-ant.importBuild("build.xml")
+import java.net.URI
+
+plugins {
+    id("java-library")
+}
+
+repositories {
+    mavenCentral()
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(17))
+    }
+}
+
+val coreJar = file("../../../core/library/core.jar")
+val batikVersion = "1.19"
+
+// The .zip file to be downloaded
+val batikZip = "batik-bin-$batikVersion.zip"
+
+// The .jar that we need from the download
+val batikJar = file("library/batik.jar")
+
+// URL for the version of Batik currently supported by this library
+val batikUrl = "https://dlcdn.apache.org//xmlgraphics/batik/binaries/$batikZip"
+
+// Storing a "local" copy in case the original link goes dead. When updating
+// releases, please upload the new version to download.processing.org.
+val batikBackupUrl = "https://download.processing.org/batik/$batikZip"
+
+
+// Download Batik dependency if not present
+// OK to ignore failed downloads if we at least have a version that's local
+val downloadBatik by tasks.registering {
+    outputs.file(batikJar)
+
+    doLast {
+        if (batikJar.exists()) {
+            logger.lifecycle("Batik JAR already exists, skipping download.")
+            return@doLast
+        }
+
+        batikJar.parentFile.mkdirs()
+        val zipFile = file(batikZip)
+        val urlsToTry = listOf(batikUrl, batikBackupUrl)
+
+        val success = urlsToTry.any { url ->
+            try {
+                logger.lifecycle("Downloading Batik from $url")
+                URI(url).toURL().openStream().use { input ->
+                    zipFile.outputStream().use { output ->
+                        input.copyTo(output)
+                    }
+                }
+                copy {
+                    from(zipTree(zipFile)) {
+                        include("batik-$batikVersion/lib/batik-all-$batikVersion.jar")
+                    }
+                    into(batikJar.parentFile)
+                    eachFile {
+                        path = batikJar.name
+                    }
+                    includeEmptyDirs = false
+                }
+
+                zipFile.delete()
+
+                if (batikJar.exists()) {
+                    logger.lifecycle("Successfully extracted Batik JAR to ${batikJar.absolutePath}")
+                    true
+                } else {
+                    logger.error("Extraction failed")
+                    false
+                }
+            } catch (e: Exception) {
+                logger.warn("Failed to download from $url: ${e.message}")
+                false
+            }
+        }
+
+        if (!success) {
+            throw GradleException("Failed to download Batik from all sources and no local copy found.")
+        }
+    }
+}
+
+tasks.register("checkCore") {
+    doFirst {
+        if (!coreJar.exists()) {
+            throw GradleException("Missing core.jar at $coreJar. Please build the core module first.")
+        }
+    }
+}
+
+sourceSets {
+    main {
+        java {
+            srcDirs("src")
+        }
+    }
+}
+
+dependencies {
+    implementation(project(":core"))
+    implementation(files(batikJar))
+}
+
+// Compile sources
+tasks.named<JavaCompile>("compileJava") {
+    dependsOn(downloadBatik, "checkCore")
+    options.encoding = "UTF-8"
+}
+
+tasks.named<Jar>("jar") {
+    dependsOn("checkCore")
+    archiveBaseName.set("svg")
+    destinationDirectory.set(file("library"))
+    from(sourceSets.main.get().output)
+}
+
+tasks.register<Jar>("svgJar") {
+    dependsOn("checkCore", "classes")
+    archiveBaseName.set("svg")
+    destinationDirectory.set(file("library"))
+    from(sourceSets.main.get().output)
+}
+
+// Clean the build directories
+tasks.named<Delete>("clean") {
+    delete("bin", "library/svg.jar")
+}
+
+
+tasks.register<Delete>("cleanLibs") {
+    delete(batikJar)
+}