HELP: PHOTOSHOP SCRIPT : how I retrive the 3DLUT Path from the colorlookup layer properties ?

[IvanoTls]

Hello,
I'd like to name the color lookup adjustment layer after the name of the 3dlut I have applied.
The script logic is quite simple: if the active layer is a color lookup adjustement layer, then retrive the full path from its properties, extract the base name, and rename the active layer using it.

#target Photoshop

if (app.activeDocument.activeLayer.kind == LayerKind.COLORLOOKUP) {

    var id = app.activeDocument.activeLayer.id;
    
    // how I retrive the 3DLUT Path from the colorlookup layer properties ?
    var lutPath = 'D:\\MyLUTs/Film Emulation\\kodak ektar 100.cube';

    lutPath = lutPath.replace(/\\/g, '/');

    var lutName = lutPath.substring(lutPath.lastIndexOf('/')+1, lutPath.lastIndexOf('.'));

    app.activeDocument.activeLayer.name = lutName;
} 
else {
    alert("Please select a Color Lookup layer!")
}

Can someone to explains me how to retrive the path properties of a color lookup adjustement layer ?

Thank you very much.

[IvanoTls · Accepted solution]

I found a solution.. probably not the best one but does the job for me...

#target Photoshop

// COLORLOOKUP(legacyContentData) - DUMP of rawData.bin
// ------------------------------------------------------------------------------
// 00000000  00 01 00 00 00 10 00 00  00 01 00 00 00 00 00 00  |................|
// 00000010  6e 75 6c 6c 00 00 00 09  00 00 00 0a 6c 6f 6f 6b  |null........look|
// 00000020  75 70 54 79 70 65 65 6e  75 6d 00 00 00 0f 63 6f  |upTypeenum....co|
// 00000030  6c 6f 72 4c 6f 6f 6b 75  70 54 79 70 65 00 00 00  |lorLookupType...|
// 00000040  05 33 44 4c 55 54 00 00  00 00 4e 6d 20 20 54 45  |.3DLUT....Nm  TE|
// 00000050  58 54 00 00 00 5a 00 43  00 3a 00 5c 00 55 00 73  |XT...Z.C.:.\.U.s|
// 00000060  00 65 00 72 00 73 00 5c  00 49 00 76 00 61 00 6e  |.e.r.s.\.I.v.a.n|
// 00000070  00 6f 00 5c 00 41 00 70  00 70 00 44 00 61 00 74  |.o.\.A.p.p.D.a.t|
// 00000080  00 61 00 5c 00 52 00 6f  00 61 00 6d 00 69 00 6e  |.a.\.R.o.a.m.i.n|
// 00000090  00 67 00 5c 00 41 00 64  00 6f 00 62 00 65 00 5c  |.g.\.A.d.o.b.e.\|
// 000000a0  00 41 00 64 00 6f 00 62  00 65 00 20 00 50 00 68  |.A.d.o.b.e. .P.h|
// 000000b0  00 6f 00 74 00 6f 00 73  00 68 00 6f 00 70 00 20  |.o.t.o.s.h.o.p. |
// 000000c0  00 32 00 30 00 32 00 32  00 5c 00 50 00 72 00 65  |.2.0.2.2.\.P.r.e|
// 000000d0  00 73 00 65 00 74 00 73  00 5c 00 33 00 44 00 4c  |.s.e.t.s.\.3.D.L|
// 000000e0  00 55 00 54 00 73 00 5c  00 69 00 63 00 2d 00 42  |.U.T.s.\.i.c.-.B|
// 000000f0  00 26 00 57 00 20 00 2d  00 20 00 30 00 31 00 2e  |.&.W. .-. .0.1..|
// 00000100  00 63 00 75 00 62 00 65  00 00 00 00 00 00 44 74  |.c.u.b.e......Dt|
// ------------------------------------------------------------------------------

function readUShort(rawData, ndx) 
{
    var byte1 = rawData.charCodeAt(ndx);
    var byte2 = rawData.charCodeAt(ndx + 1);

    var uShort = (byte1 <<8) + byte2;

    return uShort;
}

function readString(rawdata, from, len)
{
    var to = from + (len * 2) + 1;

    var str = "";

    for (var i = from + 1; i < to; i += 2) 
    {
        var val = rawData.charCodeAt(i);
        str += String.fromCharCode(val);
    }

    return str;
}

function readLutPath(rawData)
{
    var pathLen = readUShort(rawData, 0x54);
    var pathURI = readString(rawData, 0x56, pathLen);
    
    return pathURI;
}

if (app.activeDocument.activeLayer.kind == LayerKind.COLORLOOKUP) {

    var id = app.activeDocument.activeLayer.id;

    var ref = new ActionReference();

    ref.putIdentifier(stringIDToTypeID("layer"), id);

    var rawData = executeActionGet(ref).getList(stringIDToTypeID("adjustment")).getObjectValue(0).getData(stringIDToTypeID("legacyContentData"));

    // var dataFile = new File('C:/Users/Ivano/Downloads/rawdata.bin');
    // dataFile.encoding = 'BINARY';
    // dataFile.open('w');
    // dataFile.write(rawData);
    // dataFile.close();
 
    var lutPath = readLutPath(rawData);

    lutPath = lutPath.replace(/\\/g, '/');

    var lutName = lutPath.substring(lutPath.lastIndexOf('/')+1, lutPath.lastIndexOf('.'));

    app.activeDocument.activeLayer.name = lutName;
} 
else {
    alert("Please select a Color Lookup layer!")
}

[Signfeld]

Was just going to ask for this.

Yours works fine. Thanks a bunch! 🙂