From db05eaa4e5f22f9f4e47c85648d3acb41599dad5 Mon Sep 17 00:00:00 2001
From: Li Haoyi <haoyi.sg@gmail.com>
Date: Thu, 16 Jan 2025 20:57:11 +0800
Subject: [PATCH] Add second graal doc example (#4341)

extracted from https://github.com/com-lihaoyi/mill/pull/4340
---
 .../8-native-image-config/build.mill          | 36 +++++++++++++++++++
 .../foo/src/foo/Foo.java                      | 34 ++++++++++++++++++
 2 files changed, 70 insertions(+)
 create mode 100644 example/javalib/publishing/8-native-image-config/build.mill
 create mode 100644 example/javalib/publishing/8-native-image-config/foo/src/foo/Foo.java

diff --git a/example/javalib/publishing/8-native-image-config/build.mill b/example/javalib/publishing/8-native-image-config/build.mill
new file mode 100644
index 00000000000..b4ee04314fe
--- /dev/null
+++ b/example/javalib/publishing/8-native-image-config/build.mill
@@ -0,0 +1,36 @@
+package build
+import mill._, javalib._
+import mill.define.ModuleRef
+
+object foo extends JavaModule with NativeImageModule {
+  def ivyDeps = Agg(
+    ivy"net.sourceforge.argparse4j:argparse4j:0.9.0",
+    ivy"org.thymeleaf:thymeleaf:3.1.1.RELEASE",
+    ivy"org.slf4j:slf4j-nop:2.0.7"
+  )
+
+  def zincWorker = ModuleRef(ZincWorkerGraalvm)
+
+  def nativeImageOptions = Seq(
+    "--no-fallback",
+    "-H:IncludeResourceBundles=net.sourceforge.argparse4j.internal.ArgumentParserImpl"
+  )
+}
+
+object ZincWorkerGraalvm extends ZincWorkerModule {
+  def jvmId = "graalvm-community:17.0.9"
+}
+
+// This example shows how to generate native images for projects using third-party
+// libraries, in this case ArgParse4J and Thymeleaf. ArgParse4J does use some dynamic
+// resource loading and reflection, and so we need to pass the `-H:IncludeResourceBundles`
+// flag to `nativeImageOptions` in order to be compatible.
+
+/** Usage
+
+> ./mill show foo.nativeImage
+
+> ./out/foo/nativeImage.dest/native-executable --text hello-world
+<h1>hello-world</h1>
+
+*/
diff --git a/example/javalib/publishing/8-native-image-config/foo/src/foo/Foo.java b/example/javalib/publishing/8-native-image-config/foo/src/foo/Foo.java
new file mode 100644
index 00000000000..26a6c1174e4
--- /dev/null
+++ b/example/javalib/publishing/8-native-image-config/foo/src/foo/Foo.java
@@ -0,0 +1,34 @@
+package foo;
+
+import net.sourceforge.argparse4j.ArgumentParsers;
+import net.sourceforge.argparse4j.inf.ArgumentParser;
+import net.sourceforge.argparse4j.inf.Namespace;
+import org.thymeleaf.TemplateEngine;
+import org.thymeleaf.context.Context;
+
+public class Foo {
+  public static String generateHtml(String text) {
+    Context context = new Context();
+    context.setVariable("text", text);
+    return new TemplateEngine().process("<h1 th:text=\"${text}\"></h1>", context);
+  }
+
+  public static void main(String[] args) {
+    ArgumentParser parser = ArgumentParsers.newFor("template")
+        .build()
+        .defaultHelp(true)
+        .description("Inserts text into a HTML template");
+
+    parser.addArgument("-t", "--text").required(true).help("text to insert");
+
+    Namespace ns = null;
+    try {
+      ns = parser.parseArgs(args);
+    } catch (Exception e) {
+      System.out.println(e.getMessage());
+      System.exit(1);
+    }
+
+    System.out.println(generateHtml(ns.getString("text")));
+  }
+}