Cleanup (minor optimization; typos; formatting)

(cherry picked from commit 6b29ba37fb1a74af33bbbf78fb4d353bb1f76a60)


(cherry picked from commit 7e6df0a65da053bbc2aea9bdc08017565cfb5c8c)

IJ-CR-155171

GitOrigin-RevId: c4bc63da9d5e7d0457376bfaa4380cde59ab54d1

jupyter/src/com/intellij/notebooks/jupyter/core/jupyter/JupyterCorePluginListener.kt

@@ -1,3 +1,4 @@
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.notebooks.jupyter.core.jupyter
 
 import com.intellij.ide.plugins.DynamicPluginListener
@@ -31,4 +32,4 @@ class JupyterCorePluginListener : DynamicPluginListener {
 
     const val JUPYTER_PLUGIN_ID = "intellij.jupyter"
   }
-}
+}

jupyter/src/com/intellij/notebooks/jupyter/core/jupyter/preview/JupyterCefHttpHandlerBase.kt

@@ -1,12 +1,10 @@
 // Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.notebooks.jupyter.core.jupyter.preview
 
-
 import com.intellij.ide.plugins.cl.PluginAwareClassLoader
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.diagnostic.thisLogger
 import com.intellij.openapi.util.io.FileUtilRt
-import com.intellij.openapi.util.io.toCanonicalPath
 import com.intellij.util.PathUtil
 import io.netty.channel.ChannelHandlerContext
 import io.netty.handler.codec.http.EmptyHttpHeaders
@@ -15,22 +13,19 @@ import io.netty.handler.codec.http.QueryStringDecoder
 import org.apache.http.client.utils.URIBuilder
 import org.jetbrains.ide.HttpRequestHandler
 import java.io.File
-import java.net.URI
 import java.net.URL
-import java.nio.file.Path
 
 /**
  * "Web server" to serve Jupyter HTML
  */
-abstract class JupyterCefHttpHandlerBase(private val absolutePathFiles: Collection<String> = emptyList()) : HttpRequestHandler() {
-
+abstract class JupyterCefHttpHandlerBase(private val absolutePathFiles: Set<String>) : HttpRequestHandler() {
   companion object {
     private val allowedTypes = setOf("css", "js", "html", "svg", "woff", "woff2", "ttf")
     private const val JUPYTER_HTTP_URI = "jupyter"
-    private const val PATH_PREFIX = "/$JUPYTER_HTTP_URI"
+    private const val PATH_PREFIX = "/${JUPYTER_HTTP_URI}"
 
     /**
-     * Jupyter HTTP files can be accessed with this url
+     * Jupyter HTTP files can be accessed with this URL
      */
     fun getJupyterHttpUrl(): URIBuilder = getJupyterBaseUrl("http").addPathSegment(JUPYTER_HTTP_URI)
 
@@ -41,15 +36,15 @@ abstract class JupyterCefHttpHandlerBase(private val absolutePathFiles: Collecti
 
     /**
      * Resources are in different folders when launched locally versus installation.
-     * This method handles this difference. See .groovy build scripts
+     * This method handles this difference; see build scripts.
      */
     private fun getResource(javaClass: Class<*>, path: String): URL {
       // After optimizations in PluginClassLoader, classLoader.getResource return null in debug,
       // so we have additional logic with PluginClassLoader.pluginDescriptor. This is only for debugging purposes.
       var url = javaClass.classLoader.getResource(path)
-                ?: (javaClass.classLoader as? PluginAwareClassLoader)?.pluginDescriptor?.getPluginPath()?.let { Path.of(it.toCanonicalPath(), path) }?.toUri()?.toURL()
+                ?: (javaClass.classLoader as? PluginAwareClassLoader)?.pluginDescriptor?.getPluginPath()?.normalize()?.resolve(path)?.toUri()?.toURL()
 
-      // In remote dev, when we running remote-front via 'split (dev-build) run config, we have:
+      // In remote dev, when we run remote-front via 'split (dev-build)' run config, we have:
       // (javaClass.classLoader as PluginClassLoader).getAllParents().mapNotNull{it as? PluginClassLoader}.map() { loader -> loader.pluginDescriptor.pluginPath }
       // = out/classes/production/intellij.jupyter.plugin.frontend or out/classes/production/intellij.notebooks.plugin
       // PathUtil.getJarPathForClass(javaClass) = out/classes/production/intellij.jupyter.core
@@ -70,18 +65,14 @@ abstract class JupyterCefHttpHandlerBase(private val absolutePathFiles: Collecti
     }
   }
 
-  override fun isSupported(request: FullHttpRequest): Boolean {
-    return super.isSupported(request) && request.uri().let { it.startsWith(PATH_PREFIX) || it in absolutePathFiles }
-  }
+  override fun isSupported(request: FullHttpRequest): Boolean =
+    super.isSupported(request) && request.uri().let { it.startsWith(PATH_PREFIX) || it in absolutePathFiles }
 
-  override fun process(urlDecoder: QueryStringDecoder,
-                       request: FullHttpRequest,
-                       context: ChannelHandlerContext): Boolean {
-    val str = request.uri()
-    val fullUri = URI(str).path
-    val uri = getFileFromUrl(fullUri) ?: return false
+  override fun process(urlDecoder: QueryStringDecoder, request: FullHttpRequest, context: ChannelHandlerContext): Boolean {
+    val fullPath = urlDecoder.path()
+    val uri = getFileFromUrl(fullPath) ?: return false
     val readBytes = processInternalLibs(uri) ?: return false
-    sendData(readBytes, "$appName/$uri", request, context.channel(), EmptyHttpHeaders.INSTANCE)
+    sendData(readBytes, "${appName}/${uri}", request, context.channel(), EmptyHttpHeaders.INSTANCE)
     return true
   }
 
@@ -93,7 +84,7 @@ abstract class JupyterCefHttpHandlerBase(private val absolutePathFiles: Collecti
         return readFile(uri)
       }
       else {
-        thisLogger().info("Extension not allowed: $extension")
+        thisLogger().info("Extension not allowed: ${extension}")
       }
       return null
     }
@@ -123,7 +114,7 @@ abstract class JupyterCefHttpHandlerBase(private val absolutePathFiles: Collecti
     if (file.contains("BASE_EXTENSION_PATH"))
       return null
     val appName = appName
-    val resource = getResource(this::class.java, "$appName/$file")
+    val resource = getResource(this::class.java, "${appName}/${file}")
     return resource.readBytes()
   }
 }

jupyter/src/com/intellij/notebooks/jupyter/core/lang/NotebookLanguage.kt

@@ -1,3 +1,4 @@
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.notebooks.jupyter.core.lang
 
 import com.intellij.lang.Language
@@ -6,4 +7,4 @@ import com.intellij.lang.Language
  * General language for notebooks.
  * To share some of the common features for the notebooks, their language should use [NotebookLanguage] as base one.
  */
-object NotebookLanguage: Language("Notebook")
+object NotebookLanguage: Language("Notebook")

jupyter/viewOnly/src/com/intellij/jupyter/viewOnly/JupyterViewOnlyHandler.kt

@@ -1,11 +1,10 @@
-// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.jupyter.viewOnly
 
 import com.intellij.notebooks.jupyter.core.jupyter.preview.JupyterCefHttpHandlerBase
 
-class JupyterViewOnlyHandler : JupyterCefHttpHandlerBase(absolutePathFiles = listOf(
-  "/ipywidgets.html",
-  "/ipywidgets.css",
-  "/ipywidgets.js")) {
+class JupyterViewOnlyHandler : JupyterCefHttpHandlerBase(
+  absolutePathFiles = hashSetOf("/ipywidgets.html", "/ipywidgets.css", "/ipywidgets.js")
+) {
   override val appName: String = "jupyter-view-only"
 }