mdoc.internal.markdown.VariableRegex.scala Maven / Gradle / Ivy
package mdoc.internal.markdown
import scala.meta.inputs.Input
import scala.meta.inputs.Position
import mdoc.Reporter
import mdoc.internal.cli.Settings
import mdoc.internal.pos.PositionSyntax._
object VariableRegex {
private val Variable = """@(\w+)@""".r
def replaceVariables(
input: Input,
variables: Map[String, String],
reporter: Reporter,
settings: Settings
): Input.VirtualFile = {
val text = Variable.replaceAllIn(
input.text, { m =>
input.chars.lift(m.start - 1) match {
case Some('@') =>
Position.Range(input, m.start + 1, m.end).text
case _ =>
val key = m.group(1)
variables.get(key) match {
case Some(value) => value
case None =>
val pos = Position.Range(input, m.start, m.end)
reporter.error(pos, s"key not found: $key")
pos.text
}
}
}
)
Input.VirtualFile(input.toFilename(settings), text)
}
}