56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
#ifndef ADDON_UTILITIES_H
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#define ADDON_UTILITIES_H
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#include <v8.h>
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using namespace v8;
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class NativeString {
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char *data;
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size_t length;
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char utf8ValueMemory[sizeof(String::Utf8Value)];
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String::Utf8Value *utf8Value = nullptr;
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bool invalid = false;
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public:
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NativeString(Isolate *isolate, const Local<Value> &value) {
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if (value->IsUndefined()) {
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data = nullptr;
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length = 0;
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} else if (value->IsString()) {
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utf8Value = new (utf8ValueMemory) String::Utf8Value(isolate, value);
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data = (**utf8Value);
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length = utf8Value->length();
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} else if (value->IsTypedArray()) {
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Local<ArrayBufferView> arrayBufferView = Local<ArrayBufferView>::Cast(value);
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ArrayBuffer::Contents contents = arrayBufferView->Buffer()->GetContents();
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length = contents.ByteLength();
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data = (char *) contents.Data();
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} else if (value->IsArrayBuffer()) {
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Local<ArrayBuffer> arrayBuffer = Local<ArrayBuffer>::Cast(value);
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ArrayBuffer::Contents contents = arrayBuffer->GetContents();
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length = contents.ByteLength();
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data = (char *) contents.Data();
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} else {
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invalid = true;
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}
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}
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bool isInvalid(const FunctionCallbackInfo<Value> &args) {
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if (invalid) {
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args.GetReturnValue().Set(isolate->ThrowException(String::NewFromUtf8(isolate, "Text and data can only be passed by String, ArrayBuffer or TypedArray.")));
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}
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return invalid;
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}
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std::string_view getString() {
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return {data, length};
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}
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~NativeString() {
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if (utf8Value) {
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utf8Value->~Utf8Value();
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}
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}
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};
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#endif
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