io.input
Summary
Opens filename for input in text mode
Prototype
f = io.input (filename)Description
Opens filename for input in text mode. Raises an error if it cannot.
If opened OK returns a handle to the opened file, and makes it the default input file.
If called with no argument, returns the handle to the default input file.
If called with a file handle, sets the default input file to that handle.
prev = io.input () -- save current input file
f = io.input ("test.txt") --> handle to new file
f:close () -- close that file now
io.input (prev) -- restore previous input file
See Also ...
Topics
Lua base functions
Lua bc (big number) functions
Lua bit manipulation functions
Lua coroutine functions
Lua debug functions
Lua io functions
Lua math functions
Lua os functions
Lua package functions
Lua PCRE regular expression functions
Lua script extensions
Lua string functions
Lua table functions
Lua utilities
ScriptingLua functions
f:close (Closes a file)
f:flush (Flushes outstanding data to disk)
f:lines (Returns an iterator function for reading the file line-by-line)
f:read (Reads the file according to the specified formats)
f:seek (Sets and gets the current file position)
f:setvbuf (Sets the buffering mode for an output file)
f:write (Writes to a file)
io.close (Closes a file)
io.flush (Flushes outstanding data to disk for the default output file)
io.lines (Returns an iterator function for reading a named file line-by-line)
io.open (Opens a file)
io.output (Opens a file for output)
io.popen (Creates a pipe and executes a command)
io.read (Reads from the default input file)
io.stderr (File handle for standard error file)
io.stdin (File handle for standard input file)
io.stdout (File handle for standard output file)
io.tmpfile (Returns a handle to a temporary file)
io.type (Returns type of file handle)
io.write (Writes to the default output file)(Help topic: lua=io.input)
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