C/C++ plugin - notifications improvement

src/main/kotlin/org/gregorybednov/clsp/CTextMateBundleProvider.kt

@@ -1,18 +1,13 @@
 package org.gregorybednov.clsp
 
-import com.intellij.openapi.application.PluginPathManager
 import org.jetbrains.plugins.textmate.api.TextMateBundleProvider
 import org.jetbrains.plugins.textmate.api.TextMateBundleProvider.PluginBundle
 import kotlin.io.path.Path
-import kotlin.io.path.exists
 
 class CTextMateBundleProvider : TextMateBundleProvider {
     override fun getBundles(): List<PluginBundle> {
         return listOf(
             PluginBundle("c/c++", Path("/Users/gregorybednov/Downloads/better-cpp-syntax"))
         )
-        val textmateDir = PluginPathManager.getPluginResource(this::class.java, "textmate") ?: return emptyList()
-        val path = textmateDir.toPath()
-        return listOf(PluginBundle("better-cpp-syntax", path))
     }
 }

src/main/kotlin/org/gregorybednov/clsp/CppLanguage.kt

@@ -2,13 +2,21 @@ package org.gregorybednov.clsp
 
 import com.intellij.execution.configurations.GeneralCommandLine
 import com.intellij.lang.Language
+import com.intellij.notification.NotificationGroupManager
+import com.intellij.notification.NotificationType
 import com.intellij.openapi.fileTypes.LanguageFileType
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.util.IconLoader.getIcon
+import com.intellij.util.EnvironmentUtil
 import com.redhat.devtools.lsp4ij.LanguageServerFactory
+import com.redhat.devtools.lsp4ij.LanguageServerManager
 import com.redhat.devtools.lsp4ij.server.OSProcessStreamConnectionProvider
 import com.redhat.devtools.lsp4ij.server.StreamConnectionProvider
+import java.io.File
+import java.nio.file.Paths
 import javax.swing.Icon
+import kotlin.io.path.pathString
+
 
 object CppLanguage : Language("C++") {
     private fun readResolve(): Any = CppLanguage
@@ -29,10 +37,25 @@ class CppFileType private constructor() : LanguageFileType(CppLanguage.INSTANCE)
 }
 
 class CppLanguageServer(project: Project) : OSProcessStreamConnectionProvider() {
+    private fun findExecutableInPATH(executable: String) =
+        EnvironmentUtil.getEnvironmentMap().values.flatMap { it.split(File.pathSeparator) }
+            .map { File(Paths.get(it, executable).pathString) }.find { it.exists() && it.canExecute()  }?.path
+
     init {
+        val clangdPath = findExecutableInPATH("clangd")
+        if (clangdPath.isNullOrEmpty()) {
+            NotificationGroupManager.getInstance().getNotificationGroup("C/C++ notifications").createNotification(
+                "C++ LSP",
+                "LSP server clangd not found. Make sure it is installed properly (and is available in PATH)," +
+                        "and restart the IDE.",
+                NotificationType.ERROR).notify(project)
+            LanguageServerManager.getInstance(project).stop("CppLanguageServer")
+        } else {
             val commandLine = GeneralCommandLine("clangd")
+            commandLine.setWorkDirectory(project.basePath)
             super.setCommandLine(commandLine)
         }
+    }
 }
 
 class CppLanguageServerFactory : LanguageServerFactory {

src/main/resources/META-INF/plugin.xml

@@ -11,6 +11,8 @@
     <depends>org.jetbrains.plugins.textmate</depends>
 
     <extensions defaultExtensionNs="com.intellij">
+        <notificationGroup id="C/C++ notifications"
+                           displayType="BALLOON" />
         <fileType
                 name="C File"
                 extensions="c"
@@ -18,7 +20,7 @@
                 fieldName="INSTANCE"
                 implementationClass="org.gregorybednov.clsp.CFileType"/>
 
-        <!-- FUCKING $YourFileLanguage!!!!! -->
+        <!-- F*** $YourFileLanguage!!!!!  I spent f**ing week trying to understand what's wrong!!!-->
         <editorHighlighterProvider
                 filetype="C File"
                 implementationClass="org.jetbrains.plugins.textmate.language.syntax.highlighting.TextMateEditorHighlighterProvider" />

src/main/resources/icons/cpplogo.svg

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Generator: Adobe Illustrator 16.0.4, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px"
 	 width="16" height="16" viewBox="0 0 306 344.35" enable-background="new 0 0 306 344.35" xml:space="preserve">
 <path fill="#00599C" d="M302.107,258.262c2.401-4.159,3.893-8.845,3.893-13.053V99.14c0-4.208-1.49-8.893-3.892-13.052L153,172.175
 	L302.107,258.262z"/>
@@ -19,7 +18,7 @@
 		221,177.841 232.334,177.841 232.334,189.175 243.666,189.175 243.666,177.841 255,177.841 	"/>
 </g>
 <g>
-	<polygon fill="#FFFFFF" points="297.5,166.508 286.166,166.508 286.166,155.175 274.834,155.175 274.834,166.508 263.5,166.508 
-		263.5,177.841 274.834,177.841 274.834,189.175 286.166,189.175 286.166,177.841 297.5,177.841 	"/>
+	<polygon fill="#FFFFFF" points="297.5,166.508 274.834,166.508 263.5,166.508
+		263.5,177.841 286.166,177.841 297.5,177.841"/>
 </g>
 </svg>