FileCreate: Difference between revisions
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| It is important to close a file after you've finished all your operations on it, especially if you've been writing to the file. If you don't close a file and your resource crashes, all changes to the file may be lost. | |||
| Notice that you can't simply do ''fileWrite("test.txt", "File content")''. Instead, file functions operate on a '''file handle''', which is a special object representing an open file. ''fileCreate'' creates a file, opens it, and returns the resulting handle. | |||
| It is also important to remember to close a file after you've finished all your operations on it, especially if you've been writing to the file. If you don't close a file and your resource crashes, all changes to the file may be lost. | |||
Revision as of 10:17, 24 November 2007
Creates a new file in a directory of a resource. If there already exists a file with the specified name, it is overwritten with an empty file.
Note: The file functions should not be used to implement configuration files. It is encouraged to use the XML functions for this instead.
Syntax
file fileCreate ( string filename, resource root = getThisResource () )
Required arguments
- filename: the name of the file you wish to create.
Optional arguments
- root: the resource in which the file should be created. Defaults to the resource calling the function.
Returns
If successful, returns a file handle which can be used with other file functions (fileWrite, fileClose...). Returns false if an error occured.
Example
This example creates a text file and writes a string to it.
local newFile = fileCreate("test.txt")                -- attempt to create a new file
if newFile then                                       -- check if the creation succeeded
    fileWrite(newFile, "This is a test file!")        -- write a text line
    fileClose(newFile)                                -- close the file once you're done with it
end
Notice that you can't simply do fileWrite("test.txt", "File content"). Instead, file functions operate on a file handle, which is a special object representing an open file. fileCreate creates a file, opens it, and returns the resulting handle.
It is also important to remember to close a file after you've finished all your operations on it, especially if you've been writing to the file. If you don't close a file and your resource crashes, all changes to the file may be lost.