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• ammonite-repl_2.13.5
• 3.0.0-2-6342755f
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• Defaults.scala

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ammonite.main.Defaults.scala Maven / Gradle / Ivy

package ammonite.main

import java.io.InputStream

import ammonite.util.Util
import coursierapi.Dependency

import scala.io.Codec

/**
 * Constants used in the default configuration for the Ammonite REPL
 */
object Defaults extends DefaultsScalaVersionSpecific {

  val welcomeBanner = {
    def ammoniteVersion = ammonite.Constants.version
    def javaVersion = System.getProperty("java.version")
    Util.normalizeNewlines(
      s"Welcome to the Ammonite Repl $ammoniteVersion (Scala %SCALA_VERSION% Java $javaVersion)"
    )
  }

  def ammoniteHome = os.Path(System.getProperty("user.home")) / ".ammonite"

  def alreadyLoadedDependencies(
      resourceName: String = "amm-dependencies.txt"
  ): Seq[Dependency] = {

    var is: InputStream = null

    try {
      is = Thread.currentThread().getContextClassLoader.getResourceAsStream(resourceName)
      if (is == null)
        throw new Exception(s"Resource $resourceName not found")
      scala.io.Source.fromInputStream(is)(Codec.UTF8)
        .mkString
        .split('\n')
        .filter(_.nonEmpty)
        .map(l =>
          l.split(':') match {
            case Array(org, name, ver) =>
              Dependency.of(org, name, ver)
            case other =>
              throw new Exception(s"Cannot parse line '$other' from resource $resourceName")
          }
        )
    } finally {
      if (is != null)
        is.close()
    }
  }

}