Remove com.intellij usages from Gradle plugin

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerRunner.kt

@@ -27,7 +27,6 @@ import org.jetbrains.kotlin.cli.common.messages.CompilerMessageLocation
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.cli.common.messages.MessageRenderer
-import com.intellij.openapi.util.io.FileUtil
 import org.gradle.api.invocation.Gradle
 import org.jetbrains.kotlin.config.Services
 import org.jetbrains.kotlin.daemon.client.CompileServiceSession
@@ -40,6 +39,7 @@ import org.jetbrains.kotlin.gradle.utils.relativeToRoot
 import org.jetbrains.kotlin.gradle.plugin.kotlinDebug
 import org.jetbrains.kotlin.gradle.tasks.InspectClassesForMultiModuleIC
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+import org.jetbrains.kotlin.gradle.utils.newTmpFile
 import org.jetbrains.kotlin.incremental.*
 import java.io.ByteArrayOutputStream
 import java.io.File
@@ -404,7 +404,7 @@ internal class GradleCompilerRunner(private val project: Project) : KotlinCompil
             val log = project.logger
             if (clientIsAliveFlagFile == null || !clientIsAliveFlagFile!!.exists()) {
                 val projectName = project.rootProject.name.normalizeForFlagFile()
-                clientIsAliveFlagFile =  FileUtil.createTempFile("kotlin-compiler-in-$projectName-", ".alive", /*deleteOnExit =*/ true)
+                clientIsAliveFlagFile =  newTmpFile(prefix = "kotlin-compiler-in-$projectName-", suffix = ".alive")
                 log.kotlinDebug { CREATED_CLIENT_FILE_PREFIX + clientIsAliveFlagFile!!.canonicalPath }
             }
             else {
@@ -429,7 +429,7 @@ internal class GradleCompilerRunner(private val project: Project) : KotlinCompil
             val log = project.logger
             if (sessionFlagFile == null || !sessionFlagFile!!.exists()) {
                 val sessionFilesDir = sessionsDir(project).apply { mkdirs() }
-                sessionFlagFile = FileUtil.createTempFile(sessionFilesDir, "kotlin-compiler-", ".salive", /*deleteOnExit =*/ true)
+                sessionFlagFile = newTmpFile(prefix = "kotlin-compiler-", suffix = ".salive", directory = sessionFilesDir)
                 log.kotlinDebug { CREATED_SESSION_FILE_PREFIX + sessionFlagFile!!.relativeToRoot(project) }
             }
             else {

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/KaptGenerateStubsTask.kt

@@ -16,7 +16,6 @@
 
 package org.jetbrains.kotlin.gradle.internal
 
-import com.intellij.openapi.util.io.FileUtil
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.file.FileCollection
 import org.gradle.api.tasks.*
@@ -27,6 +26,7 @@ import org.jetbrains.kotlin.gradle.tasks.FilteringSourceRootsContainer
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 import org.jetbrains.kotlin.gradle.tasks.SourceRoots
 import org.jetbrains.kotlin.gradle.incremental.ChangedFiles
+import org.jetbrains.kotlin.gradle.utils.isParentOf
 import org.jetbrains.kotlin.incremental.classpathAsList
 import org.jetbrains.kotlin.incremental.destinationAsFile
 import org.jetbrains.kotlin.gradle.utils.pathsAsStringRelativeTo
@@ -62,13 +62,10 @@ open class KaptGenerateStubsTask : KotlinCompile() {
         super.setSource(sourceRootsContainer.set(sources))
     }
 
-    private fun isSourceRootAllowed(source: File): Boolean {
+    private fun isSourceRootAllowed(source: File): Boolean =
-        fun File.isInside(parent: File) = FileUtil.isAncestor(parent, this, /* strict = */ false)
+        !destinationDir.isParentOf(source) &&
-
+           !stubsDir.isParentOf(source) &&
-        return !source.isInside(destinationDir) &&
+           !generatedSourcesDir.isParentOf(source)
-               !source.isInside(stubsDir) &&
-               !source.isInside(generatedSourcesDir)
-    }
 
     override fun setupCompilerArgs(args: K2JVMCompilerArguments, defaultsOnly: Boolean) {
         kotlinCompileTask.setupCompilerArgs(args)

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/KaptTask.kt

@@ -1,7 +1,5 @@
 package org.jetbrains.kotlin.gradle.internal
 
-import com.intellij.openapi.util.io.FileUtil
-import com.intellij.openapi.util.text.StringUtil.compareVersionNumbers
 import org.gradle.api.GradleException
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.file.FileCollection
@@ -11,9 +9,11 @@ import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments
 import org.jetbrains.kotlin.compilerRunner.GradleCompilerEnvironment
 import org.jetbrains.kotlin.compilerRunner.GradleCompilerRunner
 import org.jetbrains.kotlin.compilerRunner.OutputItemsCollectorImpl
+import org.jetbrains.kotlin.gradle.plugin.compareVersionNumbers
 import org.jetbrains.kotlin.gradle.plugin.PLUGIN_CLASSPATH_CONFIGURATION_NAME
 import org.jetbrains.kotlin.gradle.tasks.*
 import org.jetbrains.kotlin.gradle.utils.isJavaFile
+import org.jetbrains.kotlin.gradle.utils.isParentOf
 import org.jetbrains.kotlin.gradle.utils.toSortedPathsArray
 import java.io.File
 
@@ -101,8 +101,7 @@ open class KaptTask : ConventionTask(), CompilerArgumentAwareWithInput<K2JVMComp
             .filterTo(HashSet(), ::isRootAllowed)
 
     private fun isRootAllowed(file: File): Boolean =
-        !FileUtil.isAncestor(destinationDir, file, /* strict = */ false) &&
+        !destinationDir.isParentOf(file) && !classesDir.isParentOf(file)
-                !FileUtil.isAncestor(classesDir, file, /* strict = */ false)
 
     @TaskAction
     fun compile() {

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinGradleBuildServices.kt

@@ -20,9 +20,6 @@ import org.gradle.BuildAdapter
 import org.gradle.BuildResult
 import org.gradle.api.invocation.Gradle
 import org.gradle.api.logging.Logging
-import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
-import com.intellij.openapi.vfs.impl.ZipHandler
-import com.intellij.openapi.vfs.impl.jar.CoreJarFileSystem
 import org.jetbrains.kotlin.compilerRunner.DELETED_SESSION_FILE_PREFIX
 import org.jetbrains.kotlin.compilerRunner.GradleCompilerRunner
 import org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompile
@@ -149,13 +146,10 @@ internal class CompilerServicesCleanup() {
         if (isWindows) {
             cleanJarCache()
         }
-
-        (KotlinCoreEnvironment.applicationEnvironment?.jarFileSystem as? CoreJarFileSystem)?.clearHandlersCache()
     }
 
     private fun cleanJarCache() {
         log.kotlinDebug("Clean JAR cache")
-        ZipHandler.clearFileAccessorCache()
         log.kotlinDebug("JAR cache cleared")
     }
 }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinPlugin.kt

@@ -3,9 +3,6 @@ package org.jetbrains.kotlin.gradle.plugin
 import com.android.build.gradle.BaseExtension
 import com.android.build.gradle.BasePlugin
 import com.android.builder.model.SourceProvider
-import com.intellij.openapi.util.io.FileUtil
-import com.intellij.openapi.util.text.StringUtil.compareVersionNumbers
-import com.intellij.util.ReflectionUtil
 import groovy.lang.Closure
 import org.gradle.api.*
 import org.gradle.api.artifacts.Configuration
@@ -218,10 +215,8 @@ internal class Kotlin2JvmSourceSetProcessor(
 internal fun SourceSetOutput.tryAddClassesDir(
         classesDirProvider: () -> FileCollection
 ): Boolean {
-    val getClassesDirs = ReflectionUtil.findMethod(
+    val getClassesDirs = javaClass.methods.firstOrNull { it.name == "getClassesDirs" && it.parameterCount == 0 }
-            javaClass.methods.asList(),
+            ?: return false
-            "getClassesDirs"
-    ) ?: return false
 
     val classesDirs = getClassesDirs(this) as? ConfigurableFileCollection
             ?: return false
@@ -262,7 +257,7 @@ internal class Kotlin2JsSourceSetProcessor(
             kotlinTask.kotlinOptions.outputFile = kotlinTask.outputFile.absolutePath
             val outputDir = kotlinTask.outputFile.parentFile
 
-            if (FileUtil.isAncestor(outputDir, project.rootDir, false))
+            if (outputDir.isParentOf(project.rootDir))
                 throw InvalidUserDataException(
                         "The output directory '$outputDir' (defined by outputFile of $kotlinTask) contains or " +
                         "matches the project root directory '${project.rootDir}'.\n" +

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/SourceRoots.kt

@@ -3,10 +3,10 @@ package org.jetbrains.kotlin.gradle.tasks
 import org.gradle.api.file.FileTree
 import org.gradle.api.file.SourceDirectorySet
 import org.gradle.api.logging.Logger
-import com.intellij.openapi.util.io.FileUtil
 import org.jetbrains.kotlin.gradle.plugin.kotlinDebug
 import org.jetbrains.kotlin.gradle.utils.isJavaFile
 import org.jetbrains.kotlin.gradle.utils.isKotlinFile
+import org.jetbrains.kotlin.gradle.utils.isParentOf
 import java.io.File
 import java.util.*
 
@@ -35,7 +35,7 @@ internal sealed class SourceRoots(val kotlinSourceFiles: List<File>) {
 
                 for (sourceDir in sourceDirs) {
                     for (sourceRoot in allSourceRoots) {
-                        if (FileUtil.isAncestor(sourceRoot, sourceDir, /* strict = */false)) {
+                        if (sourceRoot.isParentOf(sourceDir)) {
                             resultRoots.add(sourceRoot)
                         }
                     }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/SyncOutputTask.kt

@@ -20,8 +20,8 @@ import org.gradle.api.DefaultTask
 import org.gradle.api.tasks.*
 import org.gradle.api.tasks.incremental.IncrementalTaskInputs
 import org.gradle.api.tasks.incremental.InputFileDetails
-import com.intellij.openapi.util.io.FileUtil.isAncestor
 import org.jetbrains.kotlin.gradle.plugin.kotlinDebug
+import org.jetbrains.kotlin.gradle.utils.isParentOf
 import java.io.File
 import java.io.ObjectInputStream
 import java.io.ObjectOutputStream
@@ -175,7 +175,7 @@ internal open class SyncOutputTask : DefaultTask() {
     }
 
     private fun File.siblingInJavaDir(baseDir: File? = null): File {
-        val base = baseDir ?: classesDirs.find { isAncestor(it, this, true) }!!
+        val base = baseDir ?: classesDirs.find { it.isParentOf(this, strict = true) }!!
         return File(javaOutputDir, this.relativeTo(base).path)
     }
 }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/Tasks.kt

@@ -5,7 +5,6 @@
 
 package org.jetbrains.kotlin.gradle.tasks
 
-import com.intellij.openapi.util.io.FileUtil
 import org.gradle.api.Project
 import org.gradle.api.Task
 import org.gradle.api.file.FileCollection
@@ -35,6 +34,7 @@ import org.jetbrains.kotlin.gradle.internal.prepareCompilerArguments
 import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.utils.ParsedGradleVersion
 import org.jetbrains.kotlin.gradle.utils.toSortedPathsArray
+import org.jetbrains.kotlin.gradle.utils.isParentOf
 import org.jetbrains.kotlin.incremental.*
 import org.jetbrains.kotlin.utils.LibraryUtils
 import java.io.File
@@ -416,7 +416,7 @@ open class KotlinCompile : AbstractKotlinCompile<K2JVMCompilerArguments>(), Kotl
             it is AbstractCompile &&
                     it !is JavaCompile &&
                     it !is AbstractKotlinCompile<*> &&
-                    FileUtil.isAncestor(javaOutputDir!!, it.destinationDir, /* strict = */ false)
+                    javaOutputDir!!.isParentOf(it.destinationDir)
         } as? AbstractCompile
 
         if (illegalTask != null) {

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/utils/fileUtils.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.gradle.utils
 
 import org.gradle.api.Project
 import java.io.File
+import java.nio.file.Paths
 import java.util.*
 
 internal fun File.isJavaFile() =
@@ -32,3 +33,19 @@ internal fun File.relativeToRoot(project: Project): String =
 
 internal fun Iterable<File>.toSortedPathsArray(): Array<String> =
     map { it.canonicalPath }.toTypedArray().also { Arrays.sort(it) }
+
+internal fun newTmpFile(prefix: String, suffix: String? = null, directory: File? = null, deleteOnExit: Boolean = true) =
+    File.createTempFile(prefix, suffix, directory).apply {
+        if (deleteOnExit) deleteOnExit()
+    }
+
+internal fun File.isParentOf(childCandidate: File, strict: Boolean = false): Boolean {
+    val parentPath = Paths.get(this.absolutePath).normalize()
+    val childCandidatePath = Paths.get(childCandidate.absolutePath).normalize()
+
+    return if (strict) {
+        childCandidatePath.startsWith(parentPath) && parentPath != childCandidate
+    } else {
+        childCandidatePath.startsWith(parentPath)
+    }
+}