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package mill.scalalib.publish
import mill.api.Loose.Agg
import scala.xml.{Atom, Elem, NodeSeq, PrettyPrinter}
object Pom {
val head = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
implicit class XmlOps(val e: Elem) extends AnyVal {
// source: https://stackoverflow.com/a/5254068/449071
def optional : NodeSeq = {
require(e.child.length == 1)
e.child.head match {
case atom: Atom[Option[_]] => atom.data match {
case None => NodeSeq.Empty
case Some(x) => e.copy(child = x match {
case n: NodeSeq => n
case x => new Atom(x)
})
}
case _ => e
}
}
}
//TODO - not only jar packaging support?
def apply(artifact: Artifact,
dependencies: Agg[Dependency],
name: String,
pomSettings: PomSettings): String = {
val xml =
<project
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
xmlns ="http://maven.apache.org/POM/4.0.0">
<modelVersion>4.0.0</modelVersion>
<name>{name}</name>
<groupId>{artifact.group}</groupId>
<artifactId>{artifact.id}</artifactId>
<packaging>jar</packaging>
<description>{pomSettings.description}</description>
<version>{artifact.version}</version>
<url>{pomSettings.url}</url>
<licenses>
{pomSettings.licenses.map(renderLicense)}
</licenses>
<scm>
{ <connection>{pomSettings.versionControl.connection}</connection>.optional }
{ <developerConnection>{pomSettings.versionControl.developerConnection}</developerConnection>.optional }
{ <tag>{pomSettings.versionControl.tag}</tag>.optional }
{ <url>{pomSettings.versionControl.browsableRepository}</url>.optional }
</scm>
<developers>
{pomSettings.developers.map(renderDeveloper)}
</developers>
<dependencies>
{dependencies.map(renderDependency).toSeq}
</dependencies>
</project>
val pp = new PrettyPrinter(120, 4)
head + pp.format(xml)
}
private def renderLicense(l: License): Elem = {
<license>
<name>{l.name}</name>
<url>{l.url}</url>
<distribution>{l.distribution}</distribution>
</license>
}
private def renderDeveloper(d: Developer): Elem = {
<developer>
<id>{d.id}</id>
<name>{d.name}</name>
{ <organization>{d.organization}</organization>.optional }
{ <organizationUrl>{d.organizationUrl}</organizationUrl>.optional }
</developer>
}
private def renderDependency(d: Dependency): Elem = {
val scope = d.scope match {
case Scope.Compile => NodeSeq.Empty
case Scope.Provided => <scope>provided</scope>
case Scope.Test => <scope>test</scope>
case Scope.Runtime => <scope>runtime</scope>
}
if (d.exclusions.isEmpty)
<dependency>
<groupId>{d.artifact.group}</groupId>
<artifactId>{d.artifact.id}</artifactId>
<version>{d.artifact.version}</version>
{scope}
</dependency>
else
<dependency>
<groupId>{d.artifact.group}</groupId>
<artifactId>{d.artifact.id}</artifactId>
<version>{d.artifact.version}</version>
<exclusions>
{d.exclusions.map(ex =>
<exclusion>
<groupId>{ex._1}</groupId>
<artifactId>{ex._2}</artifactId>
</exclusion>
)}
</exclusions>
{scope}
</dependency>
}
}
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