Copy sort order between folder

That's what I have ended up with. Maybe it can be helpful for somebody - although I know there's a lot room for improvements

function BridgeCopySortOrder() {
#target bridge
var sUsageDescription = "Kopiert die Sortierfolge aus einem auszuwählenden Quellverzeichnis in ein Zielverzeichnis.\rDie Soritierung berücksichtigt alle in der Quellsortierung vorkommenden Dateiname mit bliebigen Dateitypen und Namenserweiterungen (<Dateiname>*.*)\r" +
                                        "bei gleichen Dateinamen (inkl. Dateinamenserweiterung) erfolgt die Sortierung anhand des Erstellungsdatums\rDateien, deren Namen nicht in der Quellsortierung erhalten sind, werden an das Ende gestellt";
                                       
var sSortFileHeader = "<?xml version='1.0' encoding='UTF-8' standalone='yes' ?>\n<dirinfo>\n<files>\n";
var sSortFileFooter = "</files>\n</dirinfo>";
var sSortLineStart = "<item key='";
var sSortLineEnd = "' />";
if (ExternalObject.AdobeXMPScript == undefined) {
    ExternalObject.AdobeXMPScript = new ExternalObject('lib:AdobeXMPScript');
}
app.bringToFront();
app.synchronousMode = true;
alert(sUsageDescription);
var fldrSortFile = new Folder();
var fldrDestination = new Folder();
f  = fldrSortFile.selectDlg("Ordner mit manueller Sortierfolge");
if (f != null) {
    var arrFileSortOrder = f.getFiles(".BridgeSort");
    if (arrFileSortOrder.length>0) {
        f =  fldrDestination.selectDlg("Ordner mit zu sortierenden Elementen");
        if (f != null) {
            arrFileSortOrder[0].open ('r');
            sSort = arrFileSortOrder[0].read ();
            arrFileSortOrder[0].close();
            var arrSortFileLines = sSort.split('\n');
            var sNewSortFile = "";
            for  (var nCount1 = 0; nCount1 < arrSortFileLines.length; ++nCount1)  {
                if (arrSortFileLines[nCount1].substr(0, sSortLineStart.length)==sSortLineStart) {
                    var sFileName = arrSortFileLines[nCount1].slice(sSortLineStart.length, arrSortFileLines[nCount1].lastIndexOf ("."));
                    var arrFilesWithSameName = f.getFiles(sFileName + "*.*");
                    if (arrFilesWithSameName.length>0) {
                        arrFilesWithSameName.sort(function(a, b) {return a.created- b.created;})
                        for  (var nCount2 = 0; nCount2 < arrFilesWithSameName.length; ++nCount2)  {
                            sTimestampFileCreated = new XMPDateTime(arrFilesWithSameName[nCount2].created).toString().replace(/-|T|:|Z/g,"");
                            if (sTimestampFileCreated.indexOf("+") >= 0) {
                                sTimestampFileCreated = sTimestampFileCreated.substring(0, sTimestampFileCreated.indexOf("+"));
                                }
                            sSortLine = sSortLineStart + decodeURI(arrFilesWithSameName[nCount2].name) + sTimestampFileCreated + sSortLineEnd + '\n';
                            sNewSortFile = sNewSortFile + sSortLine;
                            }
                        }
                    }
                }
            if (sNewSortFile != "") {
                sNewSortFile = sSortFileHeader + sNewSortFile + sSortFileFooter;
                var arrFileSortOrder = f.getFiles(".BridgeSort");
                if (arrFileSortOrder.length>0) {
                    arrFileSortOrder[0].remove();
                    }
                var fNewSortFile = new File(f.fullName + "/.BridgeSort");
                fNewSortFile.open('a');
                fNewSortFile.write(sNewSortFile);
                fNewSortFile.close();
                fNewSortFile.hidden = true;
                }
            }
        }
    else {
        alert("Gewählter Ornder enthält keine Datei .BridgeSort");
        } 
    }
app.synchronousMode = false;
}

Thanks for all your suggestions.

@SuperMerlin:

That's exactly the way I'd like to do it, but it's still not the date that is in key of the .BridgeSort file,

As an example, my -BridgeSort shows the following lines:

<?xml version='1.0' encoding='UTF-8' standalone='yes' ?>

<dirinfo>

<files>

<item key='5D_L0218.CR220180923184225' />

<item key='5D_L0561.CR220180923183949' />

<item key='5D_L0562.CR220180923183949' />

<item key='5D_L0565.CR220180923183948' />

And that is excatly the sort order of the Bridge UI. So for the first file I would assume to find a date like 2018-09-23 somewhere. Your script with the created timestamp returns

That seems to be the creation date of the file as it is given by the file system (folder is copied, that's why all dates are nearly equal):

When I open the XMP file into an editor an do a search for 2018-09-23 (or even only 2018) I can't find a single reference for that date. The closest match is the "date modified" of the RAW file. But that date is off 21h 43m - so that's not a timezone difference.

Yet Bridge is able to put the files in the right order.

Rainer

The sorts that are available are:-

app.document.sorts = [{ type:"string",name:"name", reverse:false }]; //Sort by FileName

app.document.sorts = [{ type:"string",name:"document-kind", reverse:false }]; //Sort by Type

app.document.sorts = [{ type:"date",name:"date-created", reverse:false }]; //Sort by Date Created

app.document.sorts = [{ type:"date",name:"date-modified", reverse:false }]; //Sort by Date Modified

app.document.sorts = [{ type:"number",name:"file-size", reverse:false }]; //Sort by Size

app.document.sorts = [{ type:"dimensions",name:"dimensions", reverse:false }]; //Sort by Dimensions

app.document.sorts = [{ type:"resolution",name:"resolution", reverse:false }]; //Sort by Resolution

app.document.sorts = [{ type:"colorProfile",name:"color-profile", reverse:false }]; //Sort by Color Profile

app.document.sorts = [{ type:"string",name:"label", reverse:false }]; //Sort by Label

app.document.sorts = [{ type:"number",name:"rating", reverse:false }]; //Sort by Rating

app.document.sorts = [{ type:"string",name:"keywords", reverse:false }]; //Sort by Keywords

app.document.sorts = [{ type:"date",name:"user", reverse:false }]; //Sort Manually

ScriptUI has operators for sort order. I have been playing with them and have only gotten them to partially work but that would be your best bet.