linux 读取txt文件做为文件路径

在读取txt文件里的文件名时，用作后续文件的路径拼接字符时一定要注意，要把每个txt文件中一些影藏字符给去掉，比如第一个字符为' '，或者是有换行符，一定要去掉，否则就会读取文件失败，还找不到问题在哪。给个txt读取没问题的例子

void Crowdsourcing::Readfiletxt(std::string path, std::vector<std::string>& filemessage)
{
	char buffer[7000];
	std::ifstream in(path.c_str());
	std::vector<std::string> tempsave;
	tempsave.resize(7000);
	int index = 0;
	if (!in.is_open())
	{
		//std::cout << "no swc file" << std::endl;
		in.close();
		return ;
	}
	int nullline = 0;
	while (!in.eof())
	{
		in.getline(buffer, 7000);
		if (buffer[0] == '\0' || buffer == "")
		{
			nullline++;
			if (nullline > 10)
				break;
			continue;
		}
		else
		{
			nullline = 0;
		}
		std::string line = std::string(buffer);
		if (!line.empty())
		{
			int tmpindex = 0;
			int firstindex = -1;
			for (int li = 0; li < line.length(); li++)
			{
				if (line[li] == '\r' || line[li] == ' ')
				{

				}
				else
				{
					if (firstindex == -1)
						firstindex = li;
					tmpindex = li;
				}
			}
			if (firstindex != -1)
				line = line.substr(firstindex, tmpindex + 1);
			else
				continue;

			/*line.erase(0, line.find_first_not_of(" "));
			line.erase(line.find_last_not_of(" ") + 1);
			line.erase(line.find_last_not_of('\r') + 1);*/
		}
		tempsave[index] = line;
		index++;
		if (index >= 7000)
		{
			std::copy(tempsave.begin(), tempsave.end(), std::back_inserter(filemessage));
			tempsave.clear();
			tempsave.resize(7000);
			index = 0;
		}
		//filemessage.push_back(line);
	}
	std::copy(tempsave.begin(), tempsave.begin() + index, std::back_inserter(filemessage));
	in.close();
	return ;
}