Difference between revisions of "Manual:File System Functions"
Jump to navigation
Jump to search
(Imcreasing headline levels for visibility) |
|||
Line 1: | Line 1: | ||
{{TOC right}} | {{TOC right}} | ||
− | + | = File System Functions = | |
A collection of functions for interacting with the file system. | A collection of functions for interacting with the file system. | ||
− | + | ==io.exists== | |
; io.exists() | ; io.exists() | ||
: Checks to see if a given file or folder exists. | : Checks to see if a given file or folder exists. | ||
Line 26: | Line 26: | ||
</syntaxhighlight> | </syntaxhighlight> | ||
− | + | ==lfs.attributes== | |
; lfs.attributes(path) | ; lfs.attributes(path) | ||
: Returns a table with detailed information regarding a file or directory, or nil if path is invalid / file or folder does not exist. | : Returns a table with detailed information regarding a file or directory, or nil if path is invalid / file or folder does not exist. |
Revision as of 23:28, 29 June 2017
File System Functions
A collection of functions for interacting with the file system.
io.exists
- io.exists()
- Checks to see if a given file or folder exists.
- If it exists, it’ll return the Lua true boolean value, otherwise false.
- See lfs.attributes() for a cross-platform solution.
- Example
-- This example works on Linux only
if io.exists("/home/vadi/Desktop") then
echo("This folder exists!")
else
echo("This folder doesn't exist.")
end
-- This example will work on both Windows and Linux.
if io.exists("/home/vadi/Desktop/file.tx") then
echo("This file exists!")
else
echo("This file doesn't exist.")
end
lfs.attributes
- lfs.attributes(path)
- Returns a table with detailed information regarding a file or directory, or nil if path is invalid / file or folder does not exist.
- Example
fileInfo = lfs.attributes("/path/to/file_or_directory")
if fileInfo then
if fileInfo.mode == "directory" then
echo("Path points to a directory.")
elseif fileInfo.mode == "file" then
echo("Path points to a file.")
else
echo("Path points to: "..fileInfo.mode)
end
display(fileInfo) -- to see the detailed information
else
echo("The path is invalid (file/directory doesn't exist)")
end