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/**
* Copyright (C) 2009-2011 Scalable Solutions AB <http://scalablesolutions.se>
*
* Based on Configgy by Robey Pointer.
* Copyright 2009 Robey Pointer <robeypointer@gmail.com>
* http://www.apache.org/licenses/LICENSE-2.0
*/
package akka.config
import java.io.File
object Configuration {
val DefaultPath = new File(".").getCanonicalPath
val DefaultImporter = new FilesystemImporter(DefaultPath)
def load(data: String, importer: Importer = DefaultImporter): Configuration = {
val parser = new ConfigParser(importer = importer)
new Configuration(parser parse data)
}
def fromFile(filename: String, importer: Importer): Configuration = {
load(importer.importFile(filename), importer)
}
def fromFile(path: String, filename: String): Configuration = {
val importer = new FilesystemImporter(path)
fromFile(filename, importer)
}
def fromFile(filename: String): Configuration = {
val n = filename.lastIndexOf('/')
if (n < 0) {
fromFile(DefaultPath, filename)
} else {
fromFile(filename.substring(0, n), filename.substring(n + 1))
}
}
def fromResource(filename: String): Configuration = {
fromResource(filename, ClassLoader.getSystemClassLoader)
}
def fromResource(filename: String, classLoader: ClassLoader): Configuration = {
val importer = new ResourceImporter(classLoader)
fromFile(filename, importer)
}
def fromMap(map: Map[String, Any]) = {
new Configuration(map)
}
def fromString(data: String): Configuration = {
load(data)
}
}
class Configuration(val map: Map[String, Any]) {
private val trueValues = Set("true", "on")
private val falseValues = Set("false", "off")
def contains(key: String): Boolean = map contains key
def keys: Iterable[String] = map.keys
def getAny(key: String): Option[Any] = {
try {
Some(map(key))
} catch {
case _ => None
}
}
def getAny(key: String, defaultValue: Any): Any = getAny(key).getOrElse(defaultValue)
def getSeqAny(key: String): Seq[Any] = {
try {
map(key).asInstanceOf[Seq[Any]]
} catch {
case _ => Seq.empty[Any]
}
}
def getString(key: String): Option[String] = map.get(key).map(_.toString)
def getString(key: String, defaultValue: String): String = getString(key).getOrElse(defaultValue)
def getList(key: String): Seq[String] = {
try {
map(key).asInstanceOf[Seq[String]]
} catch {
case _ => Seq.empty[String]
}
}
def getInt(key: String): Option[Int] = {
try {
Some(map(key).toString.toInt)
} catch {
case _ => None
}
}
def getInt(key: String, defaultValue: Int): Int = getInt(key).getOrElse(defaultValue)
def getLong(key: String): Option[Long] = {
try {
Some(map(key).toString.toLong)
} catch {
case _ => None
}
}
def getLong(key: String, defaultValue: Long): Long = getLong(key).getOrElse(defaultValue)
def getFloat(key: String): Option[Float] = {
try {
Some(map(key).toString.toFloat)
} catch {
case _ => None
}
}
def getFloat(key: String, defaultValue: Float): Float = getFloat(key).getOrElse(defaultValue)
def getDouble(key: String): Option[Double] = {
try {
Some(map(key).toString.toDouble)
} catch {
case _ => None
}
}
def getDouble(key: String, defaultValue: Double): Double = getDouble(key).getOrElse(defaultValue)
def getBoolean(key: String): Option[Boolean] = {
getString(key) flatMap { s =>
val isTrue = trueValues.contains(s)
if (!isTrue && !falseValues.contains(s)) None
else Some(isTrue)
}
}
def getBoolean(key: String, defaultValue: Boolean): Boolean = getBool(key).getOrElse(defaultValue)
def getBool(key: String): Option[Boolean] = getBoolean(key)
def getBool(key: String, defaultValue: Boolean): Boolean = getBoolean(key, defaultValue)
def apply(key: String): String = getString(key) match {
case None => throw new ConfigurationException("undefined config: " + key)
case Some(v) => v
}
def apply(key: String, defaultValue: String) = getString(key, defaultValue)
def apply(key: String, defaultValue: Int) = getInt(key, defaultValue)
def apply(key: String, defaultValue: Long) = getLong(key, defaultValue)
def apply(key: String, defaultValue: Boolean) = getBool(key, defaultValue)
def getSection(name: String): Option[Configuration] = {
val l = name.length + 1
val m = map.collect { case (k, v) if k.startsWith(name) => (k.substring(l), v) }
if (m.isEmpty) None
else Some(new Configuration(m))
}
}
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