Fix unnecessary usages of Locale.getDefault()

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/EndorsedLibraryInfo.kt

@@ -1,7 +1,6 @@
 package org.jetbrains.kotlin
 
 import org.gradle.api.Project
-import java.util.*
 
 data class EndorsedLibraryInfo(val project: Project, val name: String) {
 
@@ -9,6 +8,6 @@ data class EndorsedLibraryInfo(val project: Project, val name: String) {
         get() = project.name
 
     val taskName: String by lazy {
-        projectName.split('.').joinToString(separator = "") { it.replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.getDefault()) else it.toString() } }
+        projectName.split('.').joinToString(separator = "") { name -> name.replaceFirstChar { it.uppercase() } }
     }
 }

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/FrameworkTest.kt

@@ -19,7 +19,6 @@ import java.io.Serializable
 import java.nio.file.Files
 import java.nio.file.Path
 import java.nio.file.Paths
-import java.util.*
 
 /**
  * Test task for -produce framework testing. Requires a framework to be built by the Konan plugin
@@ -146,9 +145,8 @@ open class FrameworkTest : DefaultTask(), KonanTestExecutable {
         val provider = Paths.get(testOutput, name, "provider.swift")
         FileWriter(provider.toFile()).use { writer ->
             val providers = swiftSources.toFiles(Language.Swift)
-                    .map {
-                        it.name.toString().removeSuffix(".swift")
-                            .replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.getDefault()) else it.toString() }
+                    .map { file ->
+                        file.name.toString().removeSuffix(".swift").replaceFirstChar { it.uppercase() }
                     }
                     .map { "${it}Tests" }
 

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/Utils.kt

@@ -64,7 +64,7 @@ val Project.testTarget
     get() = findProperty("target") as? KonanTarget ?: HostManager.host
 
 val Project.testTargetSuffix
-    get() = (findProperty("target") as KonanTarget).name.replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.getDefault()) else it.toString() }
+    get() = (findProperty("target") as KonanTarget).name.replaceFirstChar { it.uppercase() }
 
 val Project.verboseTest
     get() = hasProperty("test_verbose")
@@ -214,14 +214,7 @@ fun Project.getFilesToCompile(compile: List<String>, exclude: List<String>): Lis
 //region Task dependency.
 
 fun Project.findKonanBuildTask(artifact: String, target: KonanTarget): TaskProvider<Task> =
-    tasks.named(
-        "compileKonan${artifact.replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.getDefault()) else it.toString() }}${
-            target.name.replaceFirstChar {
-                if (it.isLowerCase()) it.titlecase(
-                    Locale.getDefault()
-                ) else it.toString()
-            }
-        }")
+    tasks.named("compileKonan${artifact.replaceFirstChar { it.uppercase() }}${target.name.replaceFirstChar { it.uppercase() }}")
 
 fun Project.dependsOnDist(taskName: String) {
     project.tasks.getByName(taskName).dependsOnDist()

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/bitcode/CompileToBitcodePlugin.kt

@@ -13,7 +13,6 @@ import org.jetbrains.kotlin.konan.target.PlatformManager
 import org.jetbrains.kotlin.konan.target.SanitizerKind
 import org.jetbrains.kotlin.konan.target.supportedSanitizers
 import java.io.File
-import java.util.*
 import javax.inject.Inject
 
 /**
@@ -54,12 +53,9 @@ open class CompileToBitcodeExtension @Inject constructor(val project: Project) {
             val sanitizers: List<SanitizerKind?> = target.supportedSanitizers() + listOf(null)
             sanitizers.forEach { sanitizer ->
                 project.tasks.register(
-                    "${targetName}${
-                        name.snakeCaseToCamelCase()
-                            .replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.getDefault()) else it.toString() }
-                    }${suffixForSanitizer(sanitizer)}",
-                    CompileToBitcode::class.java,
-                    name, targetName, outputGroup
+                        "${targetName}${name.snakeCaseToCamelCase().replaceFirstChar { it.uppercase() }}${suffixForSanitizer(sanitizer)}",
+                        CompileToBitcode::class.java,
+                        name, targetName, outputGroup
                 ).configure {
                     srcDirs = project.files(srcRoot.resolve("cpp"))
                     headersDirs = srcDirs + project.files(srcRoot.resolve("headers"))
@@ -82,7 +78,7 @@ open class CompileToBitcodeExtension @Inject constructor(val project: Project) {
     companion object {
 
         private fun String.snakeCaseToCamelCase() =
-                split('_').joinToString(separator = "") { it.replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.getDefault()) else it.toString() } }
+                split('_').joinToString(separator = "") { word -> word.replaceFirstChar { it.uppercase() } }
 
         fun suffixForSanitizer(sanitizer: SanitizerKind?) =
             when (sanitizer) {