How to filter array of file-names?

Question

Hi everybody,
I'm trying to populate a list with files of a specific file type and then import the selection from my list into my current AE project. I've got a folder with many subfolders. So far I only managed to check through all the folders by using David Tornos solution form here:
Working with system folders and files
Now I have an array with all files in the subfolders. How can I filter that array to only show files with specific filename extensions, e.g. .jpg?
The folderObj.getFiles function has a convenient mask with which this is possible. Is there anything similar for an array?
Regards, Michael

Answer 1

You can check that the file is a jpeg exactly as my previous post, using a regexp.
The code below should work (i didnt test it):
function scoutFolder(folder, f, recursive){
    // executes the function f (handler) on every file of "folder" and if recursive evaluates to true, recurses through subfolders until bottom is reached
    var files=folder.getFiles();
    var n, N=files.length;
    for (n=0; n<N; n++){
        f(files[n]);
        if (recursive && files[n] instanceof Folder) scoutFolder(files[n], f, recursive);
    return;
var myFolder = Folder(/*your input*/);
var recursive = true;
var jpgImages = [];
var reg = /\.(jpeg|jpg)$/;
scoutFolder(myFolder, function(file){if (reg.test(file)) jpgImages.push(file);}, recursive);
// at this stage, the "jpgImages" array should contain all jpg files in the folder
Xavier.