From d4af5e35af40a44080a0eab7a3a80336d5196df3 Mon Sep 17 00:00:00 2001
From: Ilia Permiashkin <ilia.permiashkin@jetbrains.com>
Date: Thu, 24 Jul 2025 15:38:18 +0000
Subject: [PATCH] IJPL-197699 Restrict Hunspell plugin to the Hungarian
 language

Merge-request: IJ-MR-170160
Merged-by: Ilia Permiashkin <ilia.permiashkin@jetbrains.com>

GitOrigin-RevId: c4b7b82889ec9aa4f2ab0a5a95a2a50922ae8830
---
 .../engine/SpellCheckerEngine.java            |  4 ++
 .../grazie/GrazieSpellCheckerEngine.kt        |  4 +-
 .../hunspell/HunspellDictionaryProvider.kt    | 39 ++++++++++++-------
 3 files changed, 33 insertions(+), 14 deletions(-)

diff --git a/spellchecker/src/com/intellij/spellchecker/engine/SpellCheckerEngine.java b/spellchecker/src/com/intellij/spellchecker/engine/SpellCheckerEngine.java
index 7505dcc28666..cbdecb0d73dc 100644
--- a/spellchecker/src/com/intellij/spellchecker/engine/SpellCheckerEngine.java
+++ b/spellchecker/src/com/intellij/spellchecker/engine/SpellCheckerEngine.java
@@ -18,9 +18,11 @@ package com.intellij.spellchecker.engine;
 import com.intellij.spellchecker.dictionary.Dictionary;
 import com.intellij.spellchecker.dictionary.EditableDictionary;
 import com.intellij.spellchecker.dictionary.Loader;
+import kotlin.text.Regex;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
+import java.util.Set;
 
 public interface SpellCheckerEngine {
   void loadDictionary(@NotNull Loader loader);
@@ -43,6 +45,8 @@ public interface SpellCheckerEngine {
 
   boolean isDictionaryLoad(@NotNull String name);
 
+  Set<String> getDictionaryNames();
+
   void removeDictionary(@NotNull String name);
 
   void removeDictionariesRecursively(@NotNull String directory);
diff --git a/spellchecker/src/com/intellij/spellchecker/grazie/GrazieSpellCheckerEngine.kt b/spellchecker/src/com/intellij/spellchecker/grazie/GrazieSpellCheckerEngine.kt
index 7b3346394cd1..7416eb7924e2 100644
--- a/spellchecker/src/com/intellij/spellchecker/grazie/GrazieSpellCheckerEngine.kt
+++ b/spellchecker/src/com/intellij/spellchecker/grazie/GrazieSpellCheckerEngine.kt
@@ -144,7 +144,9 @@ class GrazieSpellCheckerEngine(
     )
   }
 
-  override fun isDictionaryLoad(name: String) = adapter.containsSource(name)
+  override fun isDictionaryLoad(name: String): Boolean = adapter.containsSource(name)
+
+  override fun getDictionaryNames(): Set<String> = adapter.names
 
   override fun loadDictionary(loader: Loader) {
     this.loader.loadWordList(loader, adapter::addList)
diff --git a/spellchecker/src/com/intellij/spellchecker/hunspell/HunspellDictionaryProvider.kt b/spellchecker/src/com/intellij/spellchecker/hunspell/HunspellDictionaryProvider.kt
index 1345afa410b6..9d1d32463862 100644
--- a/spellchecker/src/com/intellij/spellchecker/hunspell/HunspellDictionaryProvider.kt
+++ b/spellchecker/src/com/intellij/spellchecker/hunspell/HunspellDictionaryProvider.kt
@@ -8,12 +8,11 @@ import com.intellij.spellchecker.dictionary.CustomDictionaryProvider
 import com.intellij.spellchecker.dictionary.Dictionary
 import com.intellij.spellchecker.ui.SpellCheckingNotifier
 import com.intellij.spellchecker.util.SpellCheckerBundle
+import java.io.File
 import java.io.FileNotFoundException
 import java.text.ParseException
 
 internal class HunspellDictionaryProvider : CustomDictionaryProvider {
-  private val UNSUPPORTED_LANGUAGES = setOf("hu_HU")
-
   private fun isHunspellPluginInstalled(): Boolean {
     val hunspellId = PluginId.getId("hunspell")
     val ideaPluginDescriptor = PluginManagerCore.getPlugin(hunspellId)
@@ -30,18 +29,12 @@ internal class HunspellDictionaryProvider : CustomDictionaryProvider {
         )
         return null
       }
-      val dict = HunspellDictionary(dicPath)
-
-      if (dict.language() in UNSUPPORTED_LANGUAGES) {
-        if (!isHunspellPluginInstalled()) {
-          SpellCheckingNotifier.showWarningNotificationBalloon(SpellCheckerBundle.message("dictionary.unsupported.language.title"),
-                                                               SpellCheckerBundle.message("dictionary.unsupported.language", dicPath))
-        }
-
+      if (isHungarian(dicPath)) {
+        SpellCheckingNotifier.showWarningNotificationBalloon(SpellCheckerBundle.message("dictionary.unsupported.language.title"),
+                                                             SpellCheckerBundle.message("dictionary.unsupported.language", dicPath))
         return null
       }
-
-      return dict
+      return HunspellDictionary(dicPath)
     }
     catch (_: FileNotFoundException) {
       SpellCheckingNotifier.showWarningNotificationBalloon(SpellCheckerBundle.message("dictionary.not.found.title"),
@@ -56,11 +49,31 @@ internal class HunspellDictionaryProvider : CustomDictionaryProvider {
   }
 
   override fun isApplicable(path: String): Boolean {
-    return !isHunspellPluginInstalled() && (HunspellDictionary.isHunspell(path) || isIncompleteHunspell(path))
+    return (HunspellDictionary.isHunspell(path) || isIncompleteHunspell(path))
+           && !(isHunspellPluginInstalled() && isHungarian(path))
   }
 
   override fun getDictionaryType() = SpellCheckerBundle.message("hunspell.dictionary")
 
+  private fun isHungarian(path: String): Boolean {
+    if (FileUtilRt.getExtension(path) != "dic") return false
+    val (_, aff) = HunspellDictionary.getHunspellPaths(path)
+    if (!aff.exists()) return false
+
+    try {
+      for (line in aff.readLines()) {
+        val args = line.split("\\s+".toRegex())
+        if (args.size == 2 && args[0] == "LANG") {
+          return args[1] in setOf("hu", "HU", "hu_HU")
+        }
+      }
+    }
+    catch (_: Exception) {
+    }
+
+    return false
+  }
+
   private fun isIncompleteHunspell(path: String): Boolean {
     if (FileUtilRt.getExtension(path) != "dic") return false
     val (dic, aff) = HunspellDictionary.getHunspellPaths(path)