String encoding - problem with special characters about web-ifc

[kovacsv]

Quick and dirty solution on the JavaScript side:

function DecodeIFCString (ifcString)
{
    const ifcUnicodeRegEx = /\\X2\\(.*?)\\X0\\/uig;
    let resultString = ifcString;
    let match = ifcUnicodeRegEx.exec (ifcString);
    while (match) {
        const unicodeChar = String.fromCharCode (parseInt (match[1], 16));
        resultString = resultString.replace (match[0], unicodeChar);
        match = ifcUnicodeRegEx.exec (ifcString);
    }
    return resultString;
}

[yakovlevkll]

Thank you for your reply @agviegas! I found the problem with the version of web-ifc used in hello-world repo (0.0.35 instead of 0.0.36 with the problem fixed)

[agviegas]

Hm, that's strange. Have you asked them? If it's a different encoding, maybe we should make a flexible system that accepts all possible encodings when reading strings.

[eng-luciano-julien]

Thank you @kovacsv! It solves the problem.

[agviegas]

This issue is now a bounty. Whoever solves this will get $100. More information here.

[hikitan1]

Hello @agviegas, is this issue already integrated in the web-ifc-viewer?
If not, will it ever be integrated there?

[agviegas]

Hi @hikitan1 we are setting up the bounties for the rest of the year, and this is one of them, so yes.

[yakovlevkll]

Hello everyone,

Is it any possible way to use decoder from @deadman2000 with provided javascript API?

[agviegas]

Hi @yakovlevkll what do you mean? This was already merged.

[Tamu]

Hi everyone,
I have a new issue with the export of Revit 2022.1+ which integrates the ODA SDK exporter (ODA IFC SDK 22.8)

1. EXPRESS Data Manager : \X2\00E9\X0\
2. ODA IFC SDK : \X\E9

I confirm that with v1 the characters are ok, but not translated with v2.

I don't know for what obscure reason the Express Data was replaced by ODA !?
update Revit 2022.3

[Tamu]

Thanks @agviegas for your answer !
I found an interesting link: Revit-IFC
This is apparently a change planned by Autodesk since 2022.1+

[agviegas]

@Tamu awesome. If you find any problems with that, don't hesitate to create a new issue in this repo so that we can help you out. Cheers!