[feat] nodejs bindings

Signed-off-by: Anton Nesterov <anton@demiurg.io>

binding.gyp

@@ -3,10 +3,10 @@
     {
       'target_name': 'dal',
       'sources': [
-        'cgo/dal.h',
+        'binding/dal.h',
-        'cgo/dal.cc'
+        'binding/dal.cc'
       ],
-      'libraries': [ '../cgo/dal.a' ],
+      'libraries': [ '../binding/dal.a' ],
       'defines': [ 'NAPI_DISABLE_CPP_EXCEPTIONS' ],
       "include_dirs": [
         "<!@(node -p \"require('node-addon-api').include\")"

binding/dal.cc

@@ -1,17 +1,16 @@
 #include <napi.h>
-#include <stdio.h>
 #include "dal.h"
 
 static void _InitSQLite(const Napi::CallbackInfo& args) {
   Napi::Buffer<uint8_t> buf = args[0].As<Napi::Buffer<uint8_t>>();
-  char * charstr = reinterpret_cast<char *>(buf.Data());
+  GoString charstr = {reinterpret_cast<char *>(buf.Data()), long(buf.Length())};
   InitSQLite(charstr);
 }
 
 static Napi::Value Handle(const Napi::CallbackInfo& args) {
   Napi::Buffer<uint8_t> buf = args[0].As<Napi::Buffer<uint8_t>>();
-  char * charstr = reinterpret_cast<char *>(buf.Data());
+  GoSlice input = {reinterpret_cast<void *>(buf.Data()), long(buf.Length()), long(buf.Length())};
-  GoSlice result = HandleQuery(charstr);
+  GoSlice result = HandleQuery(input);
   return Napi::Buffer<char>::Copy(args.Env(), reinterpret_cast<char *>(result.data), result.len);
 }
 

binding/dal.go

@@ -0,0 +1,24 @@
+package main
+
+import "C"
+import (
+	"strings"
+
+	_ "github.com/mattn/go-sqlite3"
+	"l12.xyz/dal/facade"
+)
+
+//export InitSQLite
+func InitSQLite(pragmas string) {
+	pragmasArray := strings.Split(pragmas, ";")
+	facade.InitSQLite(pragmasArray)
+}
+
+//export HandleQuery
+func HandleQuery(input []byte) []byte {
+	var out []byte
+	facade.HandleQuery(&input, &out)
+	return out
+}
+
+func main() {}

binding/dal.h

@@ -19,10 +19,6 @@ typedef struct { const char *p; ptrdiff_t n; } _GoString_;
 /* Start of preamble from import "C" comments.  */
 
 
-#line 3 "dal.go"
- #include <stdlib.h>
-
-#line 1 "cgo-generated-wrapper"
 
 
 /* End of preamble from import "C" comments.  */
@@ -78,8 +74,8 @@ typedef struct { void *data; GoInt len; GoInt cap; } GoSlice;
 extern "C" {
 #endif
 
-extern void InitSQLite(char* pragmas);
+extern void InitSQLite(GoString pragmas);
-extern GoSlice HandleQuery(char* input);
+extern GoSlice HandleQuery(GoSlice input);
 
 #ifdef __cplusplus
 }

binding/go.mod

@@ -1,4 +1,4 @@
-module srv
+module binding
 
 go 1.22.6
 

cgo/dal.go

@@ -1,27 +0,0 @@
-package main
-
-// #include <stdlib.h>
-import "C"
-import (
-	"strings"
-
-	_ "github.com/mattn/go-sqlite3"
-	"l12.xyz/dal/facade"
-)
-
-//export InitSQLite
-func InitSQLite(pragmas *C.char) {
-	str := C.GoString(pragmas)
-	pragmasArray := strings.Split(str, ";")
-	facade.InitSQLite(pragmasArray)
-}
-
-//export HandleQuery
-func HandleQuery(input *C.char) []byte {
-	var in, out []byte
-	in = []byte(C.GoString(input))
-	facade.HandleQuery(&in, &out)
-	return out
-}
-
-func main() {}

package.json

@@ -19,7 +19,7 @@
     "test:dal": "bun test dal/__test__",
     "test:serve": "cd dal/__test__/srv && go run main.go",
     "fmt": "prettier --write .",
-    "cgo:prepare":"cd cgo && go build -buildmode=c-archive -o dal.a ./dal.go", 
+    "preinstall":"cd binding && go build -buildmode=c-archive -o dal.a ./dal.go", 
     "cgo:build": "node-gyp configure build"
   }
 }