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import $ivy.`com.github.rockjam::license-headers:0.0.1`
import mill._, scalalib._
import mill.eval.PathRef
import de.heikoseeberger.sbtheader.{CommentStyle, FileType, HeaderCreator, License}
trait Headers extends ScalaModule {
val headerMappings = Map(
FileType.scala.extension -> (FileType.scala, CommentStyle.cStyleBlockComment),
FileType.java.extension -> (FileType.java, CommentStyle.cStyleBlockComment)
)
val license = {
val currentYear = java.time.Year.now(java.time.Clock.systemUTC).getValue
License.Custom(
s"Copyright (C) 2009-$currentYear Lightbend Inc. <https://www.lightbend.com>"
)
}
def headerCreate() = T.command {
val withoutHeaders = filesWithoutHeaders(sources() ++ resources())
val updatedFiles = withoutHeaders.map {
case (file, updated) =>
os.write.over(file, updated)
file
}
if (updatedFiles.nonEmpty) {
T.ctx.log.info(
s"Headers created for ${updatedFiles.size} files:\n${updatedFiles.mkString("\n")}")
}
updatedFiles
}
def headerCheck() = T.command {
val withoutHeaders = filesWithoutHeaders(sources() ++ resources()).map(_._1)
if (withoutHeaders.nonEmpty) {
sys.error(
s"There are files without headers!\n${withoutHeaders.mkString("\n")}"
)
}
}
private def filesWithoutHeaders(input: Seq[PathRef]) = {
for {
ref <- input if os.exists(ref.path)
file <- os.walk(ref.path) if os.isFile(file)
(fileType, commentStyle) <- headerMappings.get(file.ext)
updatedContent <- HeaderCreator(
fileType,
commentStyle,
license,
log = _ => (),
os.read.inputStream(file)
).createText
} yield file -> updatedContent
}
}
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