// Copyright 2014 PDFium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com #include "fpdfsdk/javascript/JS_Value.h" #include <time.h> #include <algorithm> #include <cmath> #include <limits> #include <vector> #include "fpdfsdk/javascript/Document.h" #include "fpdfsdk/javascript/JS_Define.h" #include "fpdfsdk/javascript/JS_Object.h" namespace { const uint32_t g_nan[2] = {0, 0x7FF80000}; double GetNan() { return *(double*)g_nan; } double MakeDate(int year, int mon, int day, int hour, int min, int sec, int ms) { return JS_MakeDate(JS_MakeDay(year, mon, day), JS_MakeTime(hour, min, sec, ms)); } } // namespace CJS_Value::CJS_Value(CJS_Runtime* pRuntime) {} CJS_Value::CJS_Value(CJS_Runtime* pRuntime, v8::Local<v8::Value> pValue) : m_pValue(pValue) {} CJS_Value::CJS_Value(CJS_Runtime* pRuntime, const int& iValue) : m_pValue(pRuntime->NewNumber(iValue)) {} CJS_Value::CJS_Value(CJS_Runtime* pRuntime, const bool& bValue) : m_pValue(pRuntime->NewBoolean(bValue)) {} CJS_Value::CJS_Value(CJS_Runtime* pRuntime, const float& fValue) : m_pValue(pRuntime->NewNumber(fValue)) {} CJS_Value::CJS_Value(CJS_Runtime* pRuntime, const double& dValue) : m_pValue(pRuntime->NewNumber(dValue)) {} CJS_Value::CJS_Value(CJS_Runtime* pRuntime, CJS_Object* pObj) { if (pObj) m_pValue = pObj->ToV8Object(); } CJS_Value::CJS_Value(CJS_Runtime* pRuntime, const FX_WCHAR* pWstr) : m_pValue(pRuntime->NewString(pWstr)) {} CJS_Value::CJS_Value(CJS_Runtime* pRuntime, const FX_CHAR* pStr) : m_pValue(pRuntime->NewString(CFX_WideString::FromLocal(pStr).c_str())) {} CJS_Value::CJS_Value(CJS_Runtime* pRuntime, const CJS_Array& array) : m_pValue(array.ToV8Array(pRuntime)) {} CJS_Value::CJS_Value(CJS_Runtime* pRuntime, const CJS_Date& date) : m_pValue(date.ToV8Date(pRuntime)) {} CJS_Value::~CJS_Value() {} CJS_Value::CJS_Value(const CJS_Value& other) = default; void CJS_Value::Attach(v8::Local<v8::Value> pValue) { m_pValue = pValue; } void CJS_Value::Detach() { m_pValue = v8::Local<v8::Value>(); } int CJS_Value::ToInt(CJS_Runtime* pRuntime) const { return pRuntime->ToInt32(m_pValue); } bool CJS_Value::ToBool(CJS_Runtime* pRuntime) const { return pRuntime->ToBoolean(m_pValue); } double CJS_Value::ToDouble(CJS_Runtime* pRuntime) const { return pRuntime->ToNumber(m_pValue); } float CJS_Value::ToFloat(CJS_Runtime* pRuntime) const { return (float)ToDouble(pRuntime); } CJS_Object* CJS_Value::ToCJSObject(CJS_Runtime* pRuntime) const { v8::Local<v8::Object> pObj = pRuntime->ToObject(m_pValue); return static_cast<CJS_Object*>(pRuntime->GetObjectPrivate(pObj)); } v8::Local<v8::Object> CJS_Value::ToV8Object(CJS_Runtime* pRuntime) const { return pRuntime->ToObject(m_pValue); } CFX_WideString CJS_Value::ToCFXWideString(CJS_Runtime* pRuntime) const { return pRuntime->ToString(m_pValue); } CFX_ByteString CJS_Value::ToCFXByteString(CJS_Runtime* pRuntime) const { return CFX_ByteString::FromUnicode(ToCFXWideString(pRuntime)); } v8::Local<v8::Value> CJS_Value::ToV8Value(CJS_Runtime* pRuntime) const { return m_pValue; } v8::Local<v8::Array> CJS_Value::ToV8Array(CJS_Runtime* pRuntime) const { if (IsArrayObject()) return v8::Local<v8::Array>::Cast(pRuntime->ToObject(m_pValue)); return v8::Local<v8::Array>(); } void CJS_Value::SetNull(CJS_Runtime* pRuntime) { m_pValue = pRuntime->NewNull(); } void CJS_Value::MaybeCoerceToNumber(CJS_Runtime* pRuntime) { bool bAllowNaN = false; if (GetType() == VT_string) { CFX_ByteString bstr = ToCFXByteString(pRuntime); if (bstr.GetLength() == 0) return; if (bstr == "NaN") bAllowNaN = true; } v8::Isolate* pIsolate = pRuntime->GetIsolate(); v8::TryCatch try_catch(pIsolate); v8::MaybeLocal<v8::Number> maybeNum = m_pValue->ToNumber(pIsolate->GetCurrentContext()); if (maybeNum.IsEmpty()) return; v8::Local<v8::Number> num = maybeNum.ToLocalChecked(); if (std::isnan(num->Value()) && !bAllowNaN) return; m_pValue = num; } // static CJS_Value::Type CJS_Value::GetValueType(v8::Local<v8::Value> value) { if (value.IsEmpty()) return VT_unknown; if (value->IsString()) return VT_string; if (value->IsNumber()) return VT_number; if (value->IsBoolean()) return VT_boolean; if (value->IsDate()) return VT_date; if (value->IsObject()) return VT_object; if (value->IsNull()) return VT_null; if (value->IsUndefined()) return VT_undefined; return VT_unknown; } bool CJS_Value::IsArrayObject() const { return !m_pValue.IsEmpty() && m_pValue->IsArray(); } bool CJS_Value::IsDateObject() const { return !m_pValue.IsEmpty() && m_pValue->IsDate(); } bool CJS_Value::ConvertToArray(CJS_Runtime* pRuntime, CJS_Array& array) const { if (!IsArrayObject()) return false; array.Attach(pRuntime->ToArray(m_pValue)); return true; } bool CJS_Value::ConvertToDate(CJS_Runtime* pRuntime, CJS_Date& date) const { if (!IsDateObject()) return false; v8::Local<v8::Value> mutable_value = m_pValue; date.Attach(mutable_value.As<v8::Date>()); return true; } CJS_PropValue::CJS_PropValue(CJS_Runtime* pRuntime) : m_bIsSetting(0), m_Value(pRuntime), m_pJSRuntime(pRuntime) {} CJS_PropValue::CJS_PropValue(CJS_Runtime* pRuntime, const CJS_Value& value) : m_bIsSetting(0), m_Value(value), m_pJSRuntime(pRuntime) {} CJS_PropValue::~CJS_PropValue() {} void CJS_PropValue::operator<<(int iValue) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, iValue); } void CJS_PropValue::operator>>(int& iValue) const { ASSERT(m_bIsSetting); iValue = m_Value.ToInt(m_pJSRuntime); } void CJS_PropValue::operator<<(bool bValue) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, bValue); } void CJS_PropValue::operator>>(bool& bValue) const { ASSERT(m_bIsSetting); bValue = m_Value.ToBool(m_pJSRuntime); } void CJS_PropValue::operator<<(double dValue) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, dValue); } void CJS_PropValue::operator>>(double& dValue) const { ASSERT(m_bIsSetting); dValue = m_Value.ToDouble(m_pJSRuntime); } void CJS_PropValue::operator<<(CJS_Object* pObj) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, pObj); } void CJS_PropValue::operator>>(CJS_Object*& ppObj) const { ASSERT(m_bIsSetting); ppObj = m_Value.ToCJSObject(m_pJSRuntime); } void CJS_PropValue::operator<<(CJS_Document* pJsDoc) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, pJsDoc); } void CJS_PropValue::operator>>(CJS_Document*& ppJsDoc) const { ASSERT(m_bIsSetting); ppJsDoc = static_cast<CJS_Document*>(m_Value.ToCJSObject(m_pJSRuntime)); } void CJS_PropValue::operator<<(v8::Local<v8::Object> pObj) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, pObj); } void CJS_PropValue::operator>>(v8::Local<v8::Object>& ppObj) const { ASSERT(m_bIsSetting); ppObj = m_Value.ToV8Object(m_pJSRuntime); } void CJS_PropValue::operator<<(CFX_ByteString str) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, str.c_str()); } void CJS_PropValue::operator>>(CFX_ByteString& str) const { ASSERT(m_bIsSetting); str = m_Value.ToCFXByteString(m_pJSRuntime); } void CJS_PropValue::operator<<(const FX_WCHAR* str) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, str); } void CJS_PropValue::operator>>(CFX_WideString& wide_string) const { ASSERT(m_bIsSetting); wide_string = m_Value.ToCFXWideString(m_pJSRuntime); } void CJS_PropValue::operator<<(CFX_WideString wide_string) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, wide_string.c_str()); } void CJS_PropValue::operator>>(CJS_Array& array) const { ASSERT(m_bIsSetting); m_Value.ConvertToArray(m_pJSRuntime, array); } void CJS_PropValue::operator<<(CJS_Array& array) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, array.ToV8Array(m_pJSRuntime)); } void CJS_PropValue::operator>>(CJS_Date& date) const { ASSERT(m_bIsSetting); m_Value.ConvertToDate(m_pJSRuntime, date); } void CJS_PropValue::operator<<(CJS_Date& date) { ASSERT(!m_bIsSetting); m_Value = CJS_Value(m_pJSRuntime, date); } CJS_Array::CJS_Array() {} CJS_Array::CJS_Array(const CJS_Array& other) = default; CJS_Array::~CJS_Array() {} void CJS_Array::Attach(v8::Local<v8::Array> pArray) { m_pArray = pArray; } void CJS_Array::GetElement(CJS_Runtime* pRuntime, unsigned index, CJS_Value& value) const { if (!m_pArray.IsEmpty()) value.Attach(pRuntime->GetArrayElement(m_pArray, index)); } void CJS_Array::SetElement(CJS_Runtime* pRuntime, unsigned index, const CJS_Value& value) { if (m_pArray.IsEmpty()) m_pArray = pRuntime->NewArray(); pRuntime->PutArrayElement(m_pArray, index, value.ToV8Value(pRuntime)); } int CJS_Array::GetLength(CJS_Runtime* pRuntime) const { if (m_pArray.IsEmpty()) return 0; return pRuntime->GetArrayLength(m_pArray); } v8::Local<v8::Array> CJS_Array::ToV8Array(CJS_Runtime* pRuntime) const { if (m_pArray.IsEmpty()) m_pArray = pRuntime->NewArray(); return m_pArray; } CJS_Date::CJS_Date() {} CJS_Date::CJS_Date(CJS_Runtime* pRuntime, double dMsecTime) : m_pDate(pRuntime->NewDate(dMsecTime)) {} CJS_Date::CJS_Date(CJS_Runtime* pRuntime, int year, int mon, int day, int hour, int min, int sec) : m_pDate(pRuntime->NewDate(MakeDate(year, mon, day, hour, min, sec, 0))) {} CJS_Date::~CJS_Date() {} bool CJS_Date::IsValidDate(CJS_Runtime* pRuntime) const { return !m_pDate.IsEmpty() && !JS_PortIsNan(pRuntime->ToNumber(m_pDate)); } void CJS_Date::Attach(v8::Local<v8::Date> pDate) { m_pDate = pDate; } int CJS_Date::GetYear(CJS_Runtime* pRuntime) const { if (!IsValidDate(pRuntime)) return 0; return JS_GetYearFromTime(JS_LocalTime(pRuntime->ToNumber(m_pDate))); } void CJS_Date::SetYear(CJS_Runtime* pRuntime, int iYear) { m_pDate = pRuntime->NewDate( MakeDate(iYear, GetMonth(pRuntime), GetDay(pRuntime), GetHours(pRuntime), GetMinutes(pRuntime), GetSeconds(pRuntime), 0)); } int CJS_Date::GetMonth(CJS_Runtime* pRuntime) const { if (!IsValidDate(pRuntime)) return 0; return JS_GetMonthFromTime(JS_LocalTime(pRuntime->ToNumber(m_pDate))); } void CJS_Date::SetMonth(CJS_Runtime* pRuntime, int iMonth) { m_pDate = pRuntime->NewDate( MakeDate(GetYear(pRuntime), iMonth, GetDay(pRuntime), GetHours(pRuntime), GetMinutes(pRuntime), GetSeconds(pRuntime), 0)); } int CJS_Date::GetDay(CJS_Runtime* pRuntime) const { if (!IsValidDate(pRuntime)) return 0; return JS_GetDayFromTime(JS_LocalTime(pRuntime->ToNumber(m_pDate))); } void CJS_Date::SetDay(CJS_Runtime* pRuntime, int iDay) { m_pDate = pRuntime->NewDate( MakeDate(GetYear(pRuntime), GetMonth(pRuntime), iDay, GetHours(pRuntime), GetMinutes(pRuntime), GetSeconds(pRuntime), 0)); } int CJS_Date::GetHours(CJS_Runtime* pRuntime) const { if (!IsValidDate(pRuntime)) return 0; return JS_GetHourFromTime(JS_LocalTime(pRuntime->ToNumber(m_pDate))); } void CJS_Date::SetHours(CJS_Runtime* pRuntime, int iHours) { m_pDate = pRuntime->NewDate( MakeDate(GetYear(pRuntime), GetMonth(pRuntime), GetDay(pRuntime), iHours, GetMinutes(pRuntime), GetSeconds(pRuntime), 0)); } int CJS_Date::GetMinutes(CJS_Runtime* pRuntime) const { if (!IsValidDate(pRuntime)) return 0; return JS_GetMinFromTime(JS_LocalTime(pRuntime->ToNumber(m_pDate))); } void CJS_Date::SetMinutes(CJS_Runtime* pRuntime, int minutes) { m_pDate = pRuntime->NewDate(MakeDate(GetYear(pRuntime), GetMonth(pRuntime), GetDay(pRuntime), GetHours(pRuntime), minutes, GetSeconds(pRuntime), 0)); } int CJS_Date::GetSeconds(CJS_Runtime* pRuntime) const { if (!IsValidDate(pRuntime)) return 0; return JS_GetSecFromTime(JS_LocalTime(pRuntime->ToNumber(m_pDate))); } void CJS_Date::SetSeconds(CJS_Runtime* pRuntime, int seconds) { m_pDate = pRuntime->NewDate(MakeDate(GetYear(pRuntime), GetMonth(pRuntime), GetDay(pRuntime), GetHours(pRuntime), GetMinutes(pRuntime), seconds, 0)); } double CJS_Date::ToDouble(CJS_Runtime* pRuntime) const { return !m_pDate.IsEmpty() ? pRuntime->ToNumber(m_pDate) : 0.0; } CFX_WideString CJS_Date::ToString(CJS_Runtime* pRuntime) const { return !m_pDate.IsEmpty() ? pRuntime->ToString(m_pDate) : CFX_WideString(); } v8::Local<v8::Date> CJS_Date::ToV8Date(CJS_Runtime* pRuntime) const { return m_pDate; } double _getLocalTZA() { if (!FSDK_IsSandBoxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS)) return 0; time_t t = 0; time(&t); localtime(&t); #if _MSC_VER >= 1900 // In gcc and in Visual Studio prior to VS 2015 'timezone' is a global // variable declared in time.h. That variable was deprecated and in VS 2015 // is removed, with _get_timezone replacing it. long timezone = 0; _get_timezone(&timezone); #endif return (double)(-(timezone * 1000)); } int _getDaylightSavingTA(double d) { if (!FSDK_IsSandBoxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS)) return 0; time_t t = (time_t)(d / 1000); struct tm* tmp = localtime(&t); if (!tmp) return 0; if (tmp->tm_isdst > 0) // One hour. return (int)60 * 60 * 1000; return 0; } double _Mod(double x, double y) { double r = fmod(x, y); if (r < 0) r += y; return r; } int _isfinite(double v) { #if _MSC_VER return ::_finite(v); #else return std::fabs(v) < std::numeric_limits<double>::max(); #endif } double _toInteger(double n) { return (n >= 0) ? FXSYS_floor(n) : -FXSYS_floor(-n); } bool _isLeapYear(int year) { return (year % 4 == 0) && ((year % 100 != 0) || (year % 400 != 0)); } int _DayFromYear(int y) { return (int)(365 * (y - 1970.0) + FXSYS_floor((y - 1969.0) / 4) - FXSYS_floor((y - 1901.0) / 100) + FXSYS_floor((y - 1601.0) / 400)); } double _TimeFromYear(int y) { return 86400000.0 * _DayFromYear(y); } static const uint16_t daysMonth[12] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334}; static const uint16_t leapDaysMonth[12] = {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335}; double _TimeFromYearMonth(int y, int m) { const uint16_t* pMonth = _isLeapYear(y) ? leapDaysMonth : daysMonth; return _TimeFromYear(y) + ((double)pMonth[m]) * 86400000; } int _Day(double t) { return (int)FXSYS_floor(t / 86400000); } int _YearFromTime(double t) { // estimate the time. int y = 1970 + static_cast<int>(t / (365.2425 * 86400000)); if (_TimeFromYear(y) <= t) { while (_TimeFromYear(y + 1) <= t) y++; } else { while (_TimeFromYear(y) > t) y--; } return y; } int _DayWithinYear(double t) { int year = _YearFromTime(t); int day = _Day(t); return day - _DayFromYear(year); } int _MonthFromTime(double t) { int day = _DayWithinYear(t); int year = _YearFromTime(t); if (0 <= day && day < 31) return 0; if (31 <= day && day < 59 + _isLeapYear(year)) return 1; if ((59 + _isLeapYear(year)) <= day && day < (90 + _isLeapYear(year))) return 2; if ((90 + _isLeapYear(year)) <= day && day < (120 + _isLeapYear(year))) return 3; if ((120 + _isLeapYear(year)) <= day && day < (151 + _isLeapYear(year))) return 4; if ((151 + _isLeapYear(year)) <= day && day < (181 + _isLeapYear(year))) return 5; if ((181 + _isLeapYear(year)) <= day && day < (212 + _isLeapYear(year))) return 6; if ((212 + _isLeapYear(year)) <= day && day < (243 + _isLeapYear(year))) return 7; if ((243 + _isLeapYear(year)) <= day && day < (273 + _isLeapYear(year))) return 8; if ((273 + _isLeapYear(year)) <= day && day < (304 + _isLeapYear(year))) return 9; if ((304 + _isLeapYear(year)) <= day && day < (334 + _isLeapYear(year))) return 10; if ((334 + _isLeapYear(year)) <= day && day < (365 + _isLeapYear(year))) return 11; return -1; } int _DateFromTime(double t) { int day = _DayWithinYear(t); int year = _YearFromTime(t); int leap = _isLeapYear(year); int month = _MonthFromTime(t); switch (month) { case 0: return day + 1; case 1: return day - 30; case 2: return day - 58 - leap; case 3: return day - 89 - leap; case 4: return day - 119 - leap; case 5: return day - 150 - leap; case 6: return day - 180 - leap; case 7: return day - 211 - leap; case 8: return day - 242 - leap; case 9: return day - 272 - leap; case 10: return day - 303 - leap; case 11: return day - 333 - leap; default: return 0; } } double JS_GetDateTime() { if (!FSDK_IsSandBoxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS)) return 0; time_t t = time(nullptr); struct tm* pTm = localtime(&t); int year = pTm->tm_year + 1900; double t1 = _TimeFromYear(year); return t1 + pTm->tm_yday * 86400000.0 + pTm->tm_hour * 3600000.0 + pTm->tm_min * 60000.0 + pTm->tm_sec * 1000.0; } int JS_GetYearFromTime(double dt) { return _YearFromTime(dt); } int JS_GetMonthFromTime(double dt) { return _MonthFromTime(dt); } int JS_GetDayFromTime(double dt) { return _DateFromTime(dt); } int JS_GetHourFromTime(double dt) { return (int)_Mod(floor(dt / (60 * 60 * 1000)), 24); } int JS_GetMinFromTime(double dt) { return (int)_Mod(floor(dt / (60 * 1000)), 60); } int JS_GetSecFromTime(double dt) { return (int)_Mod(floor(dt / 1000), 60); } double JS_DateParse(const CFX_WideString& str) { v8::Isolate* pIsolate = v8::Isolate::GetCurrent(); v8::Isolate::Scope isolate_scope(pIsolate); v8::HandleScope scope(pIsolate); v8::Local<v8::Context> context = pIsolate->GetCurrentContext(); // Use the built-in object method. v8::Local<v8::Value> v = context->Global() ->Get(context, v8::String::NewFromUtf8(pIsolate, "Date", v8::NewStringType::kNormal) .ToLocalChecked()) .ToLocalChecked(); if (v->IsObject()) { v8::Local<v8::Object> o = v->ToObject(context).ToLocalChecked(); v = o->Get(context, v8::String::NewFromUtf8(pIsolate, "parse", v8::NewStringType::kNormal) .ToLocalChecked()) .ToLocalChecked(); if (v->IsFunction()) { v8::Local<v8::Function> funC = v8::Local<v8::Function>::Cast(v); const int argc = 1; v8::Local<v8::String> timeStr = CJS_Runtime::CurrentRuntimeFromIsolate(pIsolate)->WSToJSString(str); v8::Local<v8::Value> argv[argc] = {timeStr}; v = funC->Call(context, context->Global(), argc, argv).ToLocalChecked(); if (v->IsNumber()) { double date = v->ToNumber(context).ToLocalChecked()->Value(); if (!_isfinite(date)) return date; return JS_LocalTime(date); } } } return 0; } double JS_MakeDay(int nYear, int nMonth, int nDate) { if (!_isfinite(nYear) || !_isfinite(nMonth) || !_isfinite(nDate)) return GetNan(); double y = _toInteger(nYear); double m = _toInteger(nMonth); double dt = _toInteger(nDate); double ym = y + FXSYS_floor((double)m / 12); double mn = _Mod(m, 12); double t = _TimeFromYearMonth((int)ym, (int)mn); if (_YearFromTime(t) != ym || _MonthFromTime(t) != mn || _DateFromTime(t) != 1) return GetNan(); return _Day(t) + dt - 1; } double JS_MakeTime(int nHour, int nMin, int nSec, int nMs) { if (!_isfinite(nHour) || !_isfinite(nMin) || !_isfinite(nSec) || !_isfinite(nMs)) return GetNan(); double h = _toInteger(nHour); double m = _toInteger(nMin); double s = _toInteger(nSec); double milli = _toInteger(nMs); return h * 3600000 + m * 60000 + s * 1000 + milli; } double JS_MakeDate(double day, double time) { if (!_isfinite(day) || !_isfinite(time)) return GetNan(); return day * 86400000 + time; } bool JS_PortIsNan(double d) { return d != d; } double JS_LocalTime(double d) { return d + _getLocalTZA() + _getDaylightSavingTA(d); } std::vector<CJS_Value> JS_ExpandKeywordParams( CJS_Runtime* pRuntime, const std::vector<CJS_Value>& originals, size_t nKeywords, ...) { ASSERT(nKeywords); std::vector<CJS_Value> result(nKeywords, CJS_Value(pRuntime)); size_t size = std::min(originals.size(), nKeywords); for (size_t i = 0; i < size; ++i) result[i] = originals[i]; if (originals.size() != 1 || originals[0].GetType() != CJS_Value::VT_object || originals[0].IsArrayObject()) { return result; } v8::Local<v8::Object> pObj = originals[0].ToV8Object(pRuntime); result[0] = CJS_Value(pRuntime); // Make unknown. va_list ap; va_start(ap, nKeywords); for (size_t i = 0; i < nKeywords; ++i) { const wchar_t* property = va_arg(ap, const wchar_t*); v8::Local<v8::Value> v8Value = pRuntime->GetObjectProperty(pObj, property); if (!v8Value->IsUndefined()) result[i] = CJS_Value(pRuntime, v8Value); } va_end(ap); return result; }