escape invalid keyword chars in include file paths and package name (#1384)

Interop/StubGenerator/src/main/kotlin/org/jetbrains/kotlin/native/interop/gen/SimpleBridgeGeneratorImpl.kt

@@ -107,7 +107,7 @@ class SimpleBridgeGeneratorImpl(
                 "JNIEXPORT $cReturnType JNICALL $functionName ($joinedCParameters)"
             }
             KotlinPlatform.NATIVE -> {
-                val functionName = pkgName.replace('.', '_') + "_$kotlinFunctionName"
+                val functionName = pkgName.replace(INVALID_CLANG_IDENTIFIER_REGEX, "_") + "_$kotlinFunctionName"
                 kotlinLines.add("@SymbolName(${functionName.quoteAsKotlinLiteral()})")
                 "$cReturnType $functionName ($joinedCParameters)"
             }
@@ -167,7 +167,7 @@ class SimpleBridgeGeneratorImpl(
         val joinedCParameters = cFunctionParameters.joinToString { (name, type) -> "$type $name" }
         val cReturnType = returnType.nativeType
 
-        val symbolName = pkgName.replace('.', '_') + "_$kotlinFunctionName"
+        val symbolName = pkgName.replace(INVALID_CLANG_IDENTIFIER_REGEX, "_") + "_$kotlinFunctionName"
         kotlinLines.add("@konan.internal.ExportForCppRuntime(${symbolName.quoteAsKotlinLiteral()})")
         val cFunctionHeader = "$cReturnType $symbolName($joinedCParameters)"
 
@@ -237,4 +237,8 @@ class SimpleBridgeGeneratorImpl(
                     nativeBacked !in excludedClients
         }
     }
-}
+
+    companion object {
+        private val INVALID_CLANG_IDENTIFIER_REGEX = "[^a-zA-Z1-9_]".toRegex()
+    }
+}

Interop/StubGenerator/src/main/kotlin/org/jetbrains/kotlin/native/interop/gen/jvm/StubGenerator.kt

@@ -891,7 +891,14 @@ class StubGenerator(
 
         out("@file:Suppress(${suppress.joinToString { it.quoteAsKotlinLiteral() }})")
         if (pkgName != "") {
-            out("package $pkgName")
+            val packageName = pkgName.split(".").joinToString("."){
+                if(it.matches(VALID_PACKAGE_NAME_REGEX)){
+                    it
+                }else{
+                    "`$it`"
+                }
+            }
+            out("package $packageName")
             out("")
         }
         if (platform == KotlinPlatform.NATIVE) {
@@ -1012,4 +1019,8 @@ class StubGenerator(
 
     val mappingBridgeGenerator: MappingBridgeGenerator =
             MappingBridgeGeneratorImpl(declarationMapper, simpleBridgeGenerator)
+
+    companion object {
+        private val VALID_PACKAGE_NAME_REGEX = "[a-zA-Z1-9_.]".toRegex()
+    }
 }