[EcmaScript JSC] Encoding UTF-8 test is failed with AccessViolation on Windows codepage 1251

[alexzhornyak]

This issue is mostly duplicated with #144 but because of no rights to reopen I decided to post a new one to warn other users using non-latin codepages with JavaScriptCore datamodel

Steps to reproduce:

Conditions:

Windows any version, codepage 1251

Actions:

1. Execute test-enc-UTF8.scxml

Results:

1. We are getting Var14 from the data element

char* tmp = XERCESC_NS::XMLString::transcode(toTranscode);
_localForm = std::string(tmp);

After conversion we have
std::string Var14 ="''В чащах юга жил бы цитрус? Да, но фальшивый экземпляр!''"
It is ANSI 1251 string because method transcode transcodes a string to native code-page

Later we perform

JSStringRef scriptJS = JSStringCreateWithUTF8CString(expr.c_str());
JSValueRef exception = NULL;
JSValueRef result = JSEvaluateScript(_ctx, scriptJS, NULL, NULL, 0, &exception);

And we are getting hard exception here because we have different size.
JSString expect UTF8 string which must be
std::string Var14="'В чащах юга жил бы цитрус? Да, но фальшивый экземпляр!'

Possible Solutions

1. Change everything to unicode std::wstring
2. Modify X(const XMLCh* const toTranscode) to force convert to UTF8 string
3. Convert from native code-page in datamodels