lua读写文件

读写文件的模式

r - 读取模式w - 写入模式(覆盖现有内容)

a - 附加模式(附加在现有内容之后)

b - 二进制模式

r+ - 读取更新模式(现有数据保留)

w+ - 写入更新模式(现有数据擦除)

a+ - 附加更新模式(现有数据保留，只在文件末尾附加)

do
	--read data from file

	function readFile()
		local fileHandle = assert(io.open("test.txt", "r"), "not the file");
		if fileHandle then
			local outData = fileHandle:read("*all");
			print(outData);
		else
			print("false");
		end
			fileHandle:close(errorInfo);
	end

	--write data to the file
	function writeFile(dataBuffer)
		local writeHandle = assert(io.open("write.txt", "a+"), "not the file");

		if writeHandle then
			writeHandle:write(dataBuffer);
			print("true");
		else
			print("false");
		end

		writeHandle:close();
	end


	local inputData = 0;

	repeat
		inputData = io.read(); --write the data from io
		writeFile(inputData);
	until inputData == '#'


end