Io

Supported platforms: android, ios, mac, pc
Available since: Gideros 2011.6

Description

Manages main input/output operations

Examples

Copy a file

local function copy(src, dst)
	local srcf = io.open(src, "rb")
	local dstf = io.open(dst, "wb")
	local size = 2^13      -- good buffer size (8K)
	while true do
		local block = srcf:read(size)
		if not block then break end
		dstf:write(block)
	end
	srcf:close()
	dstf:close()
end

Methods io.close Template:Closes file, or the default output file io.flush Template:Flushes the default output file io.input Template:Opens file in text mode, sets as default input file, or returns current default input file io.lines Template:Open file in read mode, returns iterator function to return lines, nil ends io.open {{opens file in specified mode "[rawb ]", returns handle or nil}} io.output Template:Opens file in text mode, sets as default output file, or returns current default output file io.read Template:Reads file according to given formats, returns read values or nil io.tmpfile Template:Returns a handle for a temporary file, opened in update mode io.type Template:Returns "file" if obj is an open file handle, "close file" if closed, or nil if not a file handle io.write Template:Writes strings or numbers to file

Events Constants