使用readfile, getline的实现

syflyhua

于 2013-06-06 16:14:28 发布

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分类专栏：开发细节记录

本文链接：https://blog.youkuaiyun.com/syflyhua/article/details/9040101

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BOOL GetLine(HANDLE hFile, LPTSTR lpstr, DWORD size)
{
	DWORD numRead;
	DWORD index = 0;
	DWORD newline = 0;

	TCHAR tc;
	while(index < size - 1)
	{
		if(!ReadFile(hFile, &tc, 1, &numRead, NULL) || numRead == 0)
		{
			lpstr[index] = _T('\0');
			return (index != 0);
		}
		else
		{
			if (tc == _T('\r') || tc == _T('\n'))
			{
				if(newline == 0) continue;
				lpstr[index] = _T('\0');
				return TRUE;
			}
			else
			{
				newline = 1;
				lpstr[index++] = tc;
			}
		}
	}
	lpstr[index] = _T('\0');
	return TRUE;
}