Method setupCollationAttributes

src/jrd/IntlManager.cpp:703–765

bool IntlManager::setupCollationAttributes(
	const string& collationName, const string& charSetName,
	const string& specificAttributes, string& newSpecificAttributes)
{
	ExternalInfo charSetExternalInfo;
	ExternalInfo collationExternalInfo;

	newSpecificAttributes = specificAttributes;

	if (charSetCollations->get(charSetName + ":" + charSetName, charSetExternalInfo) &&
		charSetCollations->get(charSetName + ":" + collationName, collationExternalInfo))
	{
		pfn_INTL_setup_attributes attributesFunction = NULL;

		if (collationExternalInfo.moduleName.isEmpty())
			attributesFunction = INTL_builtin_setup_attributes;
		else
		{
			ModuleLoader::Module* module;

			if (modules->get(collationExternalInfo.moduleName, module) && module)
				module->findSymbol(NULL, STRINGIZE(INTL_SETUP_ATTRIBUTES_ENTRYPOINT), attributesFunction);
		}

		if (attributesFunction)
		{
			HalfStaticArray<UCHAR, BUFFER_MEDIUM> buffer;

			// first try with the static buffer
			ULONG len = (*attributesFunction)(collationExternalInfo.name.c_str(),
				charSetExternalInfo.name.c_str(), collationExternalInfo.configInfo.c_str(),
				specificAttributes.length(), (const UCHAR*) specificAttributes.begin(),
				buffer.getCapacity(), buffer.begin());

			if (len == INTL_BAD_STR_LENGTH)
			{
				// ask the right buffer size
				len = (*attributesFunction)(collationExternalInfo.name.c_str(),
					charSetExternalInfo.name.c_str(), collationExternalInfo.configInfo.c_str(),
					specificAttributes.length(), (const UCHAR*) specificAttributes.begin(),
					0, NULL);

				if (len != INTL_BAD_STR_LENGTH)
				{
					// try again
					len = (*attributesFunction)(collationExternalInfo.name.c_str(),
						charSetExternalInfo.name.c_str(), collationExternalInfo.configInfo.c_str(),
						specificAttributes.length(), (const UCHAR*) specificAttributes.begin(),
						len, buffer.getBuffer(len));
				}
			}

			if (len != INTL_BAD_STR_LENGTH)
				newSpecificAttributes.assign((const char*) buffer.begin(), len);
			else
				return false;
		}