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Provide a better error message when an older launcher is used with 0.13 and JLine classes are incompatible.

This commit is contained in:
Mark Harrah 2013-07-08 18:42:00 -04:00
parent d21ccd1662
commit e805eb919d
1 changed files with 9 additions and 0 deletions
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9
util/log/src/main/scala/sbt/ConsoleLogger.scala
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@ -78,6 +78,7 @@ object ConsoleLogger
val value = System.getProperty("sbt.log.format")
if(value eq null) (ansiSupported && !getBoolean("sbt.log.noformat")) else parseBoolean(value)
}
private[this] def jline1to2CompatMsg = "Found class jline.Terminal, but interface was expected"
private[this] def ansiSupported =
try {
@ -86,7 +87,15 @@ object ConsoleLogger
terminal.isAnsiSupported
} catch {
case e: Exception => !isWindows
// sbt 0.13 drops JLine 1.0 from the launcher and uses 2.x as a normal dependency
// when 0.13 is used with a 0.12 launcher or earlier, the JLine classes from the launcher get loaded
// this results in a linkage error as detected below. The detection is likely jvm specific, but the priority
// is avoiding mistakenly identifying something as a launcher incompatibility when it is not
case e: IncompatibleClassChangeError if e.getMessage == jline1to2CompatMsg =>
throw new IncompatibleClassChangeError("JLine incompatibility detected. Check that the sbt launcher is version 0.13.x or later.")
}
val noSuppressedMessage = (_: SuppressedTraceContext) => None
private[this] def os = System.getProperty("os.name")