Method readFile

astyle/src/astyle_main.cpp:689–731

FileEncoding ASConsole::readFile(const string &fileName_, stringstream &in) const
{
	const int blockSize = 65536;	// 64 KB
	ifstream fin(fileName_.c_str(), ios::binary);
	if (!fin)
		error("Cannot open input file", fileName_.c_str());
	char* data = new(nothrow) char[blockSize];
	if (!data)
		error("Cannot allocate memory for input file", fileName_.c_str());
	fin.read(data, sizeof(data));
	if (fin.bad())
		error("Cannot read input file", fileName_.c_str());
	size_t dataSize = static_cast<size_t>(fin.gcount());
	FileEncoding encoding = detectEncoding(data, dataSize);
	if (encoding ==  UTF_32BE || encoding ==  UTF_32LE)
		error(_("Cannot process UTF-32 encoding"), fileName_.c_str());
	bool firstBlock = true;
	while (dataSize)
	{
		if (encoding == UTF_16LE || encoding == UTF_16BE)
		{
			// convert utf-16 to utf-8
			size_t utf8Size = Utf8LengthFromUtf16(data, dataSize, encoding);
			char* utf8Out = new(nothrow) char[utf8Size];
			if (!utf8Out)
				error("Cannot allocate memory for utf-8 conversion", fileName_.c_str());
			size_t utf8Len = Utf16ToUtf8(data, dataSize, encoding, firstBlock, utf8Out);
			assert(utf8Len == utf8Size);
			in << string(utf8Out, utf8Len);
			delete []utf8Out;
		}
		else
			in << string(data, dataSize);
		fin.read(data, sizeof(data));
		if (fin.bad())
			error("Cannot read input file", fileName_.c_str());
		dataSize = static_cast<size_t>(fin.gcount());
		firstBlock = false;
	}
	fin.close();
	delete [] data;
	return encoding;
}

void ASConsole::setIgnoreExcludeErrors(bool state)
{ ignoreExcludeErrors = state; }