f:seek
Sets and gets the current file position
Prototype
n = f:seek (whence, offset)Description
Sets and gets the current file position.
f:seek () --> returns the current file position
When setting a position you can supply a string which is one of:
f:seek () --> returns the current file position
When setting a position you can supply a string which is one of:
-
"set" - from beginning of file
"cur" - from current position
"end" - from end of file
f:seek ("set", 0) -- go to start of file
f:seek ("end", -100) -- go to 100 bytes from end of file
f:seek ("cur", 50) -- go forwards 50 bytes
Lua 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: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.input - Opens filename for input in text mode
- 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
Topics
- Lua PCRE regular expression functions
- 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 script extensions
- Lua string functions
- Lua syntax
- Lua table functions
- Lua utilities
- Scripting callbacks - plugins
- Scripting