[FLEX-19623] File path length limit in AIR when creating directories

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Adobe Flex SDK 3.3 (Release)
• Component/s: mx: WindowedApplication
• Environment: Affected OS(s): Windows; Affected OS(s): Windows XP; Browser: Firefox 3.x; Language Found: English
• Assignee: Unassigned
• Reporter: Adobe JIRA
• Created: 04/Jun/09 11:16
• Updated: 05/Jun/09 07:10

Description

Steps to reproduce:

Create an AIR application with just this code:

var name:String = "abcdefghijkl1/abcdefghijkl2/abcdefghijkl3/abcdefghijkl4/abcdefghijkl5/abcdefghijkl6/abcdefghijkl7/abcdefghijkl8/abcdefghijkl9/abcdefghijkl0";
var file:File = File.applicationStorageDirectory.resolvePath(name);
file.createDirectory();

Actual Results:

When run from Flex Builder in debug mode, the correct file path is created (all the way to abcdefghijkl0).

When you build the AIR application and install it and run it, then it only creates directories up to abcdefghijkl7. It also gives an error #3003 in flashlog.txt.

It appears to be that there is a length limit on the path that can be passed to createDirectory.

The same error appears if you try to open a FileStream to write to that path. It's not just a problem with createDirectory, but anytime the AIR runtime is asked to create a file with a long path.

Expected Results:

Debug version should behave the same as AIR runtime. If there is a length limit, it should be documented.

Workaround (if any):

THERE IS NONE! I thought I had a workaround but I don't. See below:

var name:String = "abcdefghijklm";
var file:File = File.applicationStorageDirectory.resolvePath(name);
for (var i=0; i<10; i++)

{ trace('Creating ' + file.url); file.createDirectory(); file = file.resolvePath(name); }

... in this case only 7 levels of directories are being created (in AIR runtime on my system). In other words, there appears to be some kind of file path length limit which is strictly enforced in the AIR runtime (and which sucks).