ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Working with the file system
var desktopNodes:Array = File.desktopDirectory.getDirectoryListing();
for (var i:uint = 0; i < desktopNodes.length; i++)
{
if (!desktopNodes[i].isSymbolicLink)
{
trace(desktopNodes[i].name);
}
}
The canonicalize() method changes the path of a symbolic link to point to the file or directory to which the link
refers. The following code iterates through the user’s desktop directory, and reports the paths referenced by files that
are symbolic links:
var desktopNodes:Array = File.desktopDirectory.getDirectoryListing();
for (var i:uint = 0; i < desktopNodes.length; i++)
{
if (desktopNodes[i].isSymbolicLink)
{
var linkNode:File = desktopNodes[i] as File;
linkNode.canonicalize();
trace(linkNode.nativePath);
}
}
Determining space available on a volume
Adobe AIR 1.0 and later
The spaceAvailable property of a File object is the space available for use at the File location, in bytes. For example,
the following code checks the space available in the application storage directory:
trace(File.applicationStorageDirectory.spaceAvailable);
If the File object references a directory, the spaceAvailable property indicates the space in the directory that files can
use. If the File object references a file, the spaceAvailable property indicates the space into which the file could grow.
If the file location does not exist, the spaceAvailable property is set to 0. If the File object references a symbolic link,
the spaceAvailable property is set to space available at the location the symbolic link points to.
Typically the space available for a directory or file is the same as the space available on the volume containing the
directory or file. However, space available can take into account quotas and per-directory limits.
Adding a file or directory to a volume generally requires more space than the actual size of the file or the size of the
contents of the directory. For example, the operating system may require more space to store index information. Or
the disk sectors required may use additional space. Also, available space changes dynamically. So, you cannot expect
to allocate all of the reported space for file storage. For information on writing to the file system, see “Reading and
writing files” on page 687.
The StorageVolumeInfo.getStorageVolumes() method provides more detailed information on mounted storage
volumes (see “Working with storage volumes” on page 686).
Last updated 6/6/2012
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