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object Foo {
import java.io.FileOutputStream
import java.util.jar.JarEntry
import ammonite.ops.{ls, pwd, read}
import forge.{Discovered, Target}
import forge.util.{Args, PathRef}
val workspacePath = pwd / 'target / 'workspace / 'javac
val javacSrcPath = pwd / 'src / 'test / 'examples / 'javac
val javacDestPath = workspacePath / 'src
val sourceRootPath = javacDestPath / 'src
val resourceRootPath = javacDestPath / 'resources
// sourceRoot -> allSources -> classFiles
// |
// v
// resourceRoot ----> jar
val sourceRoot = Target.path(sourceRootPath)
val resourceRoot = Target.path(resourceRootPath)
val allSources = list(sourceRoot)
val classFiles = compileAll(allSources)
val jar = jarUp(resourceRoot, classFiles)
def compileAll(sources: Target[Seq[PathRef]]) = {
new Target.Subprocess(
Seq(sources),
args =>
Seq("javac") ++
args[Seq[PathRef]](0).map(_.path.toString) ++
Seq("-d", args.dest.toString)
).map(_.dest)
}
def list(root: Target[PathRef]): Target[Seq[PathRef]] = {
root.map(x => ls.rec(x.path).map(PathRef(_)))
}
case class jarUp(roots: Target[PathRef]*) extends Target[PathRef] {
val inputs = roots
def evaluate(args: Args): PathRef = {
val output = new java.util.jar.JarOutputStream(new FileOutputStream(args.dest.toIO))
for {
root0 <- args.args
root = root0.asInstanceOf[PathRef]
path <- ls.rec(root.path)
if path.isFile
} {
val relative = path.relativeTo(root.path)
output.putNextEntry(new JarEntry(relative.toString))
output.write(read.bytes(path))
}
output.close()
PathRef(args.dest)
}
}
}
@main def main(): Any = Foo -> forge.Discovered[Foo.type]
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