C++ (Cpp) wistream::bad Beispiele

Beispiel #1

Datei: regex_merge_example.cpp Projekt: KnowNo/test-code-backup

void load_file2(std::wstring& wstrOut, std::wistream& wistreamIn)
{
	wstrOut.erase();
	//bad() 如果出现错误则返回true 
	if(wistreamIn.bad()) 
		return;
	wstrOut.reserve(wistreamIn.rdbuf()->in_avail());
	wchar_t c;
	//get() 读取字符 
	while(wistreamIn.get(c))
	{
		if(wstrOut.capacity() == wstrOut.size())
			wstrOut.reserve(wstrOut.capacity() * 3);
		wstrOut.append(1, c);
	}
}