Add --resources option

To add a directory as resource directory

Author: alexarchambault

modules/cli/src/main/scala/scala/cli/commands/SharedOptions.scala

@@ -74,6 +74,12 @@ final case class SharedOptions(
   @Name("extraSourceJar")
     extraSourceJars: List[String] = Nil,
 
+  @Group("Java")
+  @HelpMessage("Add resource directory")
+  @ValueDescription("paths")
+  @Name("resource")
+    resources: List[String] = Nil,
+
   @Hidden
     classWrap: Boolean = false,
 
@@ -188,6 +194,9 @@ final case class SharedOptions(
         .left.map(_.describe)
         .map(f => os.read.bytes(os.Path(f, Os.pwd)))
     }
+    val resourceInputs = resources
+      .map(os.Path(_, Os.pwd))
+      .map(Inputs.ResourceDirectory(_))
     val inputs = Inputs(
       args.remaining,
       Os.pwd,
@@ -206,6 +215,7 @@ final case class SharedOptions(
       (if (defaultForbiddenDirectories) SharedOptions.defaultForbiddenDirectories else Nil) ++
         forbid.filter(_.trim.nonEmpty).map(os.Path(_, Os.pwd))
     inputs
+      .add(resourceInputs)
       .checkAttributes(directories.directories)
       .avoid(forbiddenDirs, directories.directories)
   }

modules/integration/src/test/scala/scala/cli/integration/RunTestDefinitions.scala

@@ -980,4 +980,28 @@ abstract class RunTestDefinitions(val scalaVersionOpt: Option[String])
       forbiddenDirTest()
     }
 
+  private val resourcesInputs = {
+    val resourceContent = "Hello from resources"
+    TestInputs(
+      Seq(
+        os.rel / "resources" / "test" / "data" -> resourceContent,
+        os.rel / "Test.scala" ->
+          s"""object Test {
+             |  def main(args: Array[String]): Unit = {
+             |    val cl = Thread.currentThread().getContextClassLoader
+             |    val is = cl.getResourceAsStream("test/data")
+             |    val content = scala.io.Source.fromInputStream(is)(scala.io.Codec.UTF8).mkString
+             |    assert(content == "$resourceContent")
+             |  }
+             |}
+             |""".stripMargin
+      )
+    )
+  }
+  test("resources") {
+    resourcesInputs.fromRoot { root =>
+      os.proc(TestUtil.cli, "run", ".", "--resources", "./resources").call(cwd = root)
+    }
+  }
+
 }

website/docs/reference/cli-options.md

@@ -829,6 +829,12 @@ Aliases: `--source-jar`, `--source-jars`, `--extra-source-jar`
 
 Add extra source JARs
 
+#### `--resources`
+
+Aliases: `--resource`
+
+Add resource directory
+
 #### `--class-wrap`
 
 #### `--scala-library`