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package ch.jodersky.jni
import java.io.IOException
import scala.sys.process.Process
/**
* A platform is the representation of an architecture-kernel combination.
* It is a somewhat ambigous concept defined as the set of all system configurations
* capable of running a native binary.
*/
case class Platform private (arch: String, kernel: String) {
/**
* String representation of this platform. It is inspired by Autotools' platform
* triplet, without the vendor field.
*/
def id = arch + "-" + kernel
}
object Platform {
final val Unknown = Platform("unknown", "unknown")
/** Create a platform with spaces stripped and case normalized. */
def normalized(arch: String, kernel: String): Platform = {
def normalize(str: String) = str.toLowerCase.filter(!_.isWhitespace)
Platform(normalize(arch), normalize(kernel))
}
/** Run 'uname' to determine current platform. Returns None if uname does not exist. */
def uname: Option[Platform] = {
val lineOpt = try {
Some(Process("uname -sm").lines.head)
} catch {
case _: IOException => None
}
lineOpt.map { line =>
val parts = line.split(" ")
if (parts.length != 2) {
sys.error("Could not determine platform: 'uname -sm' returned unexpected string: " + line)
} else {
Platform.normalized(parts(1), parts(0))
}
}
}
def current = uname
}
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