stdlib-gen: simpify copyright notice reading

libraries/tools/kotlin-stdlib-gen/src/generators/GenerateStandardLib.kt

@@ -35,9 +35,6 @@ fun main(args: Array<String>) {
         ComparableOps
     )
 
-    COPYRIGHT_NOTICE =
-        readCopyrightNoticeFromProfile { Thread.currentThread().contextClassLoader.getResourceAsStream("apache.xml")!!.reader() }
-
     val targetBaseDirs = mutableMapOf<KotlinTarget, File>()
 
     when (args.size) {

libraries/tools/kotlin-stdlib-gen/src/generators/math/mathTestGeneratorMain.kt

@@ -2,7 +2,6 @@ package generators.math
 
 import templates.COPYRIGHT_NOTICE
 import templates.autoGeneratedWarning
-import templates.readCopyrightNoticeFromProfile
 import java.io.File
 import java.io.FileWriter
 import kotlin.math.*
@@ -20,9 +19,6 @@ fun main(args: Array<String>) {
         }
     }
 
-    COPYRIGHT_NOTICE =
-        readCopyrightNoticeFromProfile { Thread.currentThread().contextClassLoader.getResourceAsStream("apache.xml")!!.reader() }
-
     generateUtils(baseDir.resolve("mathTestUtils.kt"))
 
     val trigonometryFunctions = listOf(

libraries/tools/kotlin-stdlib-gen/src/generators/unicode/GenerateUnicodeData.kt

@@ -14,9 +14,7 @@ import generators.unicode.mappings.string.StringLowercaseGenerator
 import generators.unicode.mappings.string.StringUppercaseGenerator
 import generators.unicode.ranges.OtherLowercaseRangesGenerator
 import generators.unicode.ranges.OtherUppercaseRangesGenerator
-import templates.COPYRIGHT_NOTICE
 import templates.KotlinTarget
-import templates.readCopyrightNoticeFromProfile
 import java.io.File
 import java.net.URL
 import kotlin.system.exitProcess
@@ -167,9 +165,6 @@ fun main(args: Array<String>) {
         }
     }
 
-    COPYRIGHT_NOTICE =
-        readCopyrightNoticeFromProfile { Thread.currentThread().contextClassLoader.getResourceAsStream("apache.xml").reader() }
-
     categoryRangesGenerators.forEach {
         bmpUnicodeDataLines.forEach { line -> it.appendLine(line) }
         it.generate()

libraries/tools/kotlin-stdlib-gen/src/templates/dsl/Writers.kt

@@ -16,7 +16,7 @@ fun autoGeneratedWarning(generator: String): String = """//
 // See: https://github.com/JetBrains/kotlin/tree/master/libraries/stdlib
 //"""
 
-lateinit var COPYRIGHT_NOTICE: String
+val COPYRIGHT_NOTICE: String by lazy { readCopyrightNoticeFromResource() }
 
 fun readCopyrightNoticeFromProfile(copyrightProfile: File): String = readCopyrightNoticeFromProfile { copyrightProfile.reader() }
 
@@ -31,6 +31,9 @@ fun readCopyrightNoticeFromProfile(getCopyrightReader: () -> Reader): String {
     return template.replace(yearTemplate, year).lines().joinToString("", prefix = "/*\n", postfix = " */\n") { " * $it\n" }
 }
 
+fun readCopyrightNoticeFromResource() = readCopyrightNoticeFromProfile { Thread.currentThread().contextClassLoader.getResourceAsStream("apache.xml")!!.reader() }
+
+
 
 data class TargetedSourceFile(
     val target: KotlinTarget,