FileOpen
From Multi Theft Auto: Wiki
Opens an existing file for reading and writing.
| Note: To prevent memory leaks, ensure each successful call to fileOpen has a matching call to fileClose. |
| Tip: The file functions should not be used to implement configuration files. It is encouraged to use the XML functions for this instead. |
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Warning: As of 1.5.4 r10413, this function will fail when trying to access a script file of another resource, even with general.ModifyOtherObjects rights granted, which uses a mysql connection through dbConnect when database_credentials_protection is enabled in the server configuration. Additionally, meta.xml will be un-writable and will always open in read-only mode. |
Syntax
file fileOpen ( string filePath [, bool readOnly = false ])
OOP Syntax Help! I don't understand this!
- Note: The function will only attempt to open the file, it won't create it.
- Method: File(...)
FROM VERSION 1.5.6 r11865 ONWARDS
OOP Syntax Help! I don't understand this!
- Note: This is a static function underneath the File class. Using File(...) to open a file will attempt to create the file, if it doesn't exist
- Method: File.open(...)
Required Arguments
- filePath: The filepath of the file in the following format: ":resourceName/path". 'resourceName' is the name of the resource the file is in, and 'path' is the path from the root directory of the resource to the file.
- For example, if there is a file named 'coolObjects.txt' in the resource 'objectSearch', it can be opened from another resource this way: fileOpen(":objectSearch/coolObjects.txt").
- If the file is in the current resource, only the file path is necessary, e.g. fileOpen("coolObjects.txt").
Optional Arguments
- readOnly: By default, the file is opened with reading and writing access. You can specify true for this parameter if you only need reading access.
Returns
If successful, returns a file handle for the file. Otherwise returns false (f.e. if the file doesn't exist).
Example
This example opens the file test.txt that is in the root of the current resource, and outputs its contents to the console.
local hFile = fileOpen("test.txt", true) -- attempt to open the file (read only)
if hFile then -- check if it was successfully opened
local buffer
while not fileIsEOF(hFile) do -- as long as we're not at the end of the file...
buffer = fileRead(hFile, 500) -- ... read the next 500 bytes...
outputConsole(buffer) -- ... and output them to the console
end
fileClose(hFile) -- close the file once we're done with it
else
outputConsole("Unable to open test.txt")
end
This example show how to append data to an existing file:
local hFile = fileOpen("test.txt") -- attempt to open the file (read and write mode)
if hFile then -- check if it was successfully opened
fileSetPos( hFile, fileGetSize( hFile ) ) -- move position to the end of the file
fileWrite(hFile, "hello" ) -- append data
fileFlush(hFile) -- Flush the appended data into the file.
fileClose(hFile) -- close the file once we're done with it
else
outputConsole("Unable to open test.txt")
end
