added property file to scala-library.jar

git-svn-id: http://lampsvn.epfl.ch/svn-repos/scala/scala/trunk@11012 5e8d7ff9-d8ef-0310-90f0-a4852d11357a

build.xml

@@ -65,6 +65,7 @@ PROPERTIES
   <property name="scaladoc.exec.name" value="scaladoc"/>
   <property name="fsc.exec.name" value="fsc"/>
   <property name="comp.prop.name" value="compiler.properties"/>
+  <property name="lib.prop.name" value="library.properties"/>
 
 <!-- ===========================================================================
 ANT INITIALISATION
@@ -346,6 +347,16 @@ BUILD LOCAL REFERENCE (LOCKER) LAYER
       <exclude name="scala/actors/**"/>
       <excludesfile name="${nsc.excludes.file}" if="excludes.avail"/>
     </starr>
+    <echo
+      file="${locker.dir}/lib/library/${lib.prop.name}"
+      message="version.number=${version.number}${line.separator}"
+      append="false"
+    />
+    <echo
+      file="${locker.dir}/lib/library/${lib.prop.name}"
+      message="copyright.string=${copyright.string}${line.separator}"
+      append="true"
+    />
   <!-- Build compiler -->
     <mkdir dir="${locker.dir}/lib/compiler"/>
     <starr
@@ -466,6 +477,16 @@ BUILD QUICK-TEST LAYER
       <exclude name="scala/actors/**"/>
       <excludesfile name="${nsc.excludes.file}" if="excludes.avail"/>
     </locker>
+    <echo
+      file="${quick.dir}/lib/library/${lib.prop.name}"
+      message="version.number=${version.number}${line.separator}"
+      append="false"
+    />
+    <echo
+      file="${quick.dir}/lib/library/${lib.prop.name}"
+      message="copyright.string=${copyright.string}${line.separator}"
+      append="true"
+    />
   <!-- Build DBC -->
     <mkdir dir="${quick.dir}/lib/dbc"/>
     <locker
@@ -668,6 +689,16 @@ TEST
       <exclude name="scala/actors/**"/>
       <excludesfile name="${nsc.excludes.file}" if="excludes.avail"/>
     </quick>
+    <echo
+      file="${strap.dir}/lib/library/${lib.prop.name}"
+      message="version.number=${version.number}${line.separator}"
+      append="false"
+    />
+    <echo
+      file="${strap.dir}/lib/library/${lib.prop.name}"
+      message="copyright.string=${copyright.string}${line.separator}"
+      append="true"
+    />
   <!-- Build DBC -->
     <mkdir dir="${strap.dir}/lib/dbc"/>
     <quick
@@ -970,6 +1001,7 @@ GENERATES A DISTRIBUTION
       <manifest>
         <attribute name="Signature-Version" value="${version.number}"/>
         <attribute name="Built-By" value="${user.name}"/>
+        <attribute name="Main-Class" value="scala.tools.nsc.Main"/>
         <attribute name="Class-Path" value="${lib.jar.name}"/>
         <section name="scala/tools/nsc">
           <attribute name="Extension-Name" value="scala.tools.nsc"/>
@@ -988,6 +1020,7 @@ GENERATES A DISTRIBUTION
       <manifest>
         <attribute name="Signature-Version" value="${version.number}"/>
         <attribute name="Built-By" value="${user.name}"/>
+        <attribute name="Main-Class" value="scala.runtime.Properties"/>
         <section name="scala">
           <attribute name="Extension-Name" value="scala"/>
           <attribute name="Specification-Title" value="Scala Library"/>

src/library/scala/runtime/Properties.scala

@@ -0,0 +1,57 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2006-2007, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+// $Id$
+
+package scala.runtime
+
+/** A utility to load the library properties from a Java properties file
+ *  included in the jar.
+ *
+ *  @author Stephane Micheloud
+ */
+object Properties {
+
+  /** The name of the properties file */
+  private val propFilename = "/library.properties"
+
+  /** The loaded properties */
+  private val props = {
+    val props = new java.util.Properties
+    val stream = classOf[Application].getResourceAsStream(propFilename)
+    if (stream != null)
+      props.load(stream)
+    props
+  }
+
+  /** The version number of the jar this was loaded from, or
+    * "(unknown)" if it cannot be determined.
+    */
+  val versionString: String = {
+    val defaultString = "(unknown)"
+    "version " + props.getProperty("version.number")
+  }
+  
+  val copyrightString: String = {
+    val defaultString = "(c) 2002-2007 LAMP/EPFL"
+    props.getProperty("copyright.string", defaultString)
+  }
+
+  val encodingString: String = {
+    val defaultString = "ISO-8859-1"
+    props.getProperty("file.encoding", defaultString)
+  }
+
+  private val writer = new java.io.PrintWriter(Console.err, true)
+
+  val versionMsg = "Scala library " + versionString + " -- " + copyrightString
+
+  def main(args: Array[String]) {
+    writer.println(versionMsg)
+  }
+}