src: move decodeUtf8 to node_encoding

Author: anonrig

lib/internal/encoding.js

@@ -51,10 +51,7 @@ const {
 } = require('internal/validators');
 
 const {
-  decodeUTF8,
-} = internalBinding('buffer');
-
-const {
+  decodeUtf8,
   encodeUtf8,
   encodeIntoUtf8,
 } = internalBinding('encoding_methods');
@@ -440,7 +437,7 @@ function makeTextDecoderICU() {
       this[kUTF8FastPath] &&= !(options?.stream);
 
       if (this[kUTF8FastPath]) {
-        return decodeUTF8(input, this[kIgnoreBOM]);
+        return decodeUtf8(input, this[kIgnoreBOM]);
       }
 
       this.#prepareConverter();

src/node_buffer.cc

@@ -566,50 +566,6 @@ void StringSlice(const FunctionCallbackInfo<Value>& args) {
   args.GetReturnValue().Set(ret);
 }
 
-// Convert the input into an encoded string
-void DecodeUTF8(const FunctionCallbackInfo<Value>& args) {
-  Environment* env = Environment::GetCurrent(args);  // list, flags
-
-  CHECK_GE(args.Length(), 1);
-
-  if (!(args[0]->IsArrayBuffer() || args[0]->IsSharedArrayBuffer() ||
-        args[0]->IsArrayBufferView())) {
-    return node::THROW_ERR_INVALID_ARG_TYPE(
-        env->isolate(),
-        "The \"list\" argument must be an instance of SharedArrayBuffer, "
-        "ArrayBuffer or ArrayBufferView.");
-  }
-
-  ArrayBufferViewContents<char> buffer(args[0]);
-
-  bool ignore_bom = args[1]->IsTrue();
-
-  const char* data = buffer.data();
-  size_t length = buffer.length();
-
-  if (!ignore_bom && length >= 3) {
-    if (memcmp(data, "\xEF\xBB\xBF", 3) == 0) {
-      data += 3;
-      length -= 3;
-    }
-  }
-
-  if (length == 0) return args.GetReturnValue().SetEmptyString();
-
-  Local<Value> error;
-  MaybeLocal<Value> maybe_ret =
-      StringBytes::Encode(env->isolate(), data, length, UTF8, &error);
-  Local<Value> ret;
-
-  if (!maybe_ret.ToLocal(&ret)) {
-    CHECK(!error.IsEmpty());
-    env->isolate()->ThrowException(error);
-    return;
-  }
-
-  args.GetReturnValue().Set(ret);
-}
-
 // bytesCopied = copy(buffer, target[, targetStart][, sourceStart][, sourceEnd])
 void Copy(const FunctionCallbackInfo<Value> &args) {
   Environment* env = Environment::GetCurrent(args);
@@ -1259,7 +1215,6 @@ void Initialize(Local<Object> target,
 
   SetMethod(context, target, "setBufferPrototype", SetBufferPrototype);
   SetMethodNoSideEffect(context, target, "createFromString", CreateFromString);
-  SetMethodNoSideEffect(context, target, "decodeUTF8", DecodeUTF8);
 
   SetMethodNoSideEffect(context, target, "byteLengthUtf8", ByteLengthUtf8);
   SetMethod(context, target, "copy", Copy);
@@ -1314,7 +1269,6 @@ void Initialize(Local<Object> target,
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
   registry->Register(SetBufferPrototype);
   registry->Register(CreateFromString);
-  registry->Register(DecodeUTF8);
 
   registry->Register(ByteLengthUtf8);
   registry->Register(Copy);

src/node_encoding.cc

@@ -1,7 +1,9 @@
 #include "env-inl.h"
 #include "node.h"
+#include "node_errors.h"
 #include "node_external_reference.h"
 #include "node_internals.h"
+#include "string_bytes.h"
 #include "util-inl.h"
 #include "v8-fast-api-calls.h"
 #include "v8.h"
@@ -22,6 +24,7 @@ using v8::FastOneByteString;
 using v8::FunctionCallbackInfo;
 using v8::Isolate;
 using v8::Local;
+using v8::MaybeLocal;
 using v8::Object;
 using v8::String;
 using v8::Uint32Array;
@@ -116,6 +119,49 @@ static void FastEncodeIntoUtf8(
 #endif  // NODE_HAVE_I18N_SUPPORT
 }
 
+void DecodeUtf8(const FunctionCallbackInfo<Value>& args) {
+  Environment* env = Environment::GetCurrent(args);  // list, flags
+
+  CHECK_GE(args.Length(), 1);
+
+  if (!(args[0]->IsArrayBuffer() || args[0]->IsSharedArrayBuffer() ||
+        args[0]->IsArrayBufferView())) {
+    return node::THROW_ERR_INVALID_ARG_TYPE(
+        env->isolate(),
+        "The \"list\" argument must be an instance of SharedArrayBuffer, "
+        "ArrayBuffer or ArrayBufferView.");
+  }
+
+  ArrayBufferViewContents<char> buffer(args[0]);
+
+  bool ignore_bom = args[1]->IsTrue();
+
+  const char* data = buffer.data();
+  size_t length = buffer.length();
+
+  if (!ignore_bom && length >= 3) {
+    if (memcmp(data, "\xEF\xBB\xBF", 3) == 0) {
+      data += 3;
+      length -= 3;
+    }
+  }
+
+  if (length == 0) return args.GetReturnValue().SetEmptyString();
+
+  Local<Value> error;
+  MaybeLocal<Value> maybe_ret =
+      StringBytes::Encode(env->isolate(), data, length, UTF8, &error);
+  Local<Value> ret;
+
+  if (!maybe_ret.ToLocal(&ret)) {
+    CHECK(!error.IsEmpty());
+    env->isolate()->ThrowException(error);
+    return;
+  }
+
+  args.GetReturnValue().Set(ret);
+}
+
 CFunction fast_encode_into_utf8_(CFunction::Make(FastEncodeIntoUtf8));
 
 static void Initialize(Local<Object> target,
@@ -128,6 +174,7 @@ static void Initialize(Local<Object> target,
                 "encodeIntoUtf8",
                 EncodeIntoUtf8,
                 &fast_encode_into_utf8_);
+  SetMethodNoSideEffect(context, target, "decodeUtf8", DecodeUtf8);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
@@ -136,6 +183,8 @@ void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
   registry->Register(EncodeIntoUtf8);
   registry->Register(FastEncodeIntoUtf8);
   registry->Register(fast_encode_into_utf8_.GetTypeInfo());
+
+  registry->Register(DecodeUtf8);
 }
 
 }  // namespace encoding_methods