/
LogManager.scala
56 lines (49 loc) · 2.03 KB
/
LogManager.scala
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/* sbt -- Simple Build Tool
* Copyright 2010 Mark Harrah
*/
package sbt
import java.io.PrintWriter
import LogManager._
import std.Transform
import Project.ScopedKey
import Keys.{logLevel, logManager, persistLogLevel, persistTraceLevel, traceLevel}
object LogManager
{
def construct(data: Settings[Scope]) = (task: ScopedKey[_], to: PrintWriter) =>
{
val manager = logManager in task.scope get data getOrElse default
manager(data, task, to)
}
lazy val default: LogManager = withLoggers()
def defaultScreen: AbstractLogger = ConsoleLogger()
def defaultBacked(useColor: Boolean): PrintWriter => AbstractLogger =
to => ConsoleLogger(ConsoleLogger.printWriterOut(to), useColor = useColor) // TODO: should probably filter ANSI codes when useColor=false
def withScreenLogger(mk: => AbstractLogger): LogManager = withLoggers(mk)
def withLoggers(screen: => AbstractLogger = defaultScreen, backed: PrintWriter => AbstractLogger = defaultBacked(true)): LogManager =
new LogManager {
def apply(data: Settings[Scope], task: ScopedKey[_], to: PrintWriter): Logger =
defaultLogger(data, task, screen, backed(to))
}
def defaultLogger(data: Settings[Scope], task: ScopedKey[_], console: AbstractLogger, backed: AbstractLogger): Logger =
{
val scope = task.scope
def getOr[T](key: AttributeKey[T], default: T): T = data.get(scope, key) getOrElse default
val screenLevel = getOr(logLevel.key, Level.Info)
val backingLevel = getOr(persistLogLevel.key, Level.Debug)
val screenTrace = getOr(traceLevel.key, -1)
val backingTrace = getOr(persistTraceLevel.key, Int.MaxValue)
val multi = new MultiLogger(console :: backed :: Nil)
// sets multi to the most verbose for clients that inspect the current level
multi setLevel Level.union(backingLevel, screenLevel)
// set the specific levels
console setLevel screenLevel
backed setLevel backingLevel
console setTrace screenTrace
backed setTrace backingTrace
multi: Logger
}
}
trait LogManager
{
def apply(data: Settings[Scope], task: ScopedKey[_], writer: PrintWriter): Logger
}