[Compiler CLI] Use reading language version settings from environment only if the resource is presented or flag is set

compiler/cli/src/org/jetbrains/kotlin/cli/common/CLITool.kt

@@ -26,7 +26,9 @@ import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.INFO
 import org.jetbrains.kotlin.cli.jvm.compiler.CompileEnvironmentException
 import org.jetbrains.kotlin.cli.jvm.compiler.setupIdeaStandaloneExecution
 import org.jetbrains.kotlin.config.KotlinCompilerVersion
+import org.jetbrains.kotlin.config.LanguageVersionSettings
 import org.jetbrains.kotlin.config.Services
+import org.jetbrains.kotlin.utils.PathUtil
 import java.io.PrintStream
 import java.net.URL
 import java.net.URLConnection
@@ -48,7 +50,11 @@ abstract class CLITool<A : CommonToolArguments> {
     ): ExitCode {
         val arguments = createArguments()
         parseCommandLineArguments(args.asList(), arguments)
-        parseCommandLineArgumentsFromEnvironment(arguments)
+
+        if (isReadingSettingsFromEnvironmentAllowed) {
+            parseCommandLineArgumentsFromEnvironment(arguments)
+        }
+
         val collector = PrintingMessageCollector(errStream, messageRenderer, arguments.verbose)
 
         try {
@@ -128,6 +134,9 @@ abstract class CLITool<A : CommonToolArguments> {
 
     abstract fun executableScriptFileName(): String
 
+    var isReadingSettingsFromEnvironmentAllowed: Boolean =
+        this::class.java.classLoader.getResource(LanguageVersionSettings.RESOURCE_NAME_TO_ALLOW_READING_FROM_ENVIRONMENT) != null
+
     companion object {
         private fun defaultMessageRenderer(): MessageRenderer =
             when (System.getProperty(MessageRenderer.PROPERTY_KEY)) {

compiler/cli/src/org/jetbrains/kotlin/cli/common/utils.kt

@@ -27,7 +27,11 @@ import org.jetbrains.kotlin.name.isSubpackageOf
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.util.Logger
 import org.jetbrains.kotlin.utils.KotlinPaths
+import java.io.ByteArrayOutputStream
 import java.io.File
+import java.util.zip.ZipEntry
+import java.util.zip.ZipFile
+import java.util.zip.ZipOutputStream
 import kotlin.system.exitProcess
 
 fun incrementalCompilationIsEnabled(arguments: CommonCompilerArguments): Boolean {
@@ -97,4 +101,5 @@ fun MessageCollector.toLogger(): Logger =
         override fun log(message: String) {
             report(CompilerMessageSeverity.LOGGING, message)
         }
-    }
+    }
+

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/KotlinCoreEnvironment.kt

@@ -54,9 +54,7 @@ import org.jetbrains.kotlin.asJava.LightClassGenerationSupport
 import org.jetbrains.kotlin.asJava.classes.FacadeCache
 import org.jetbrains.kotlin.asJava.finder.JavaElementFinder
 import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
-import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
-import org.jetbrains.kotlin.cli.common.CliModuleVisibilityManagerImpl
-import org.jetbrains.kotlin.cli.common.CompilerSystemProperties
+import org.jetbrains.kotlin.cli.common.*
 import org.jetbrains.kotlin.cli.common.config.ContentRoot
 import org.jetbrains.kotlin.cli.common.config.KotlinSourceRoot
 import org.jetbrains.kotlin.cli.common.config.kotlinSourceRoots
@@ -66,7 +64,6 @@ import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.ERROR
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.STRONG_WARNING
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
-import org.jetbrains.kotlin.cli.common.toBooleanLenient
 import org.jetbrains.kotlin.cli.jvm.compiler.jarfs.FastJarFileSystem
 import org.jetbrains.kotlin.cli.jvm.config.*
 import org.jetbrains.kotlin.cli.jvm.index.*

compiler/tests-common/tests/org/jetbrains/kotlin/cli/AbstractCliTest.java

@@ -106,6 +106,7 @@ public abstract class AbstractCliTest extends TestCaseWithTmpdir {
 
         File environmentTestConfig = new File(fileName.replaceFirst("\\.args$", ".env"));
         if (environmentTestConfig.exists()) {
+            compiler.setReadingSettingsFromEnvironmentAllowed(true);
             CompilerSystemProperties.LANGUAGE_VERSION_SETTINGS.setValue(FilesKt.readText(environmentTestConfig, Charsets.UTF_8));
         }
 

compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt

@@ -464,6 +464,10 @@ interface LanguageVersionSettings {
 
     // Please do not use this to enable/disable specific features/checks. Instead add a new LanguageFeature entry and call supportsFeature
     val languageVersion: LanguageVersion
+
+    companion object {
+        const val RESOURCE_NAME_TO_ALLOW_READING_FROM_ENVIRONMENT = "META-INF/allow-configuring-from-environment"
+    }
 }
 
 class LanguageVersionSettingsImpl @JvmOverloads constructor(