UZIP.js: Range Error on freshly generated and valid PDF

Hey!

First of all thanks for your amazing gits! Love using theme.

Today i encountered a problem with freshly generated and valid PDFs (InDesign / Affinity Publisher, Adobe Acrobat or even self generated with qpdf).

Scenario:

Read the File with FileReader as BinaryString -> handover to a PDF Stream Extraction Function (Regex the FlateDecode Part) -> UZIP.inflate -> Put together the PDF File

FileReader:

var request = new XMLHttpRequest();
request.open('GET', file, true);
request.responseType = 'blob';
request.onload = function() {
    var reader = new FileReader();
    reader.readAsBinaryString(request.response);
    reader.onload =  function(e){
        console.log(e.target.result);
        stripPDFStream(e.target.result);
    };
};
request.send();

Stream Extraction:

function stripPDFStream(input) {
    var regex = /.*?FlateDecode.*?stream(.*?)endstream/gms;
    function replaceDeflate() {
        var result;
        while ((result = regex.exec(input)) !== null) {
            console.log(result[0]);
            console.log(result[1]); // <---- Stream Data
            var stripped = result[1].replace(/^\s+|\s+$/g, '');
            var inflate = inflatePDF(stripped);
            var output = input.replace(result[0], inflate);
        }
    }
    replaceDeflate();
}

Inflate:

function inflatePDF(input) {
    var enc = new TextEncoder(); // always utf-8
    var uint8array = enc.encode(input);
    var data = UZIP.inflateRaw(uint8array);
    console.log(data);
}

UZip throws the error: Uncaught RangeError: Invalid type array lenght: length.

You said something over at pako.js git, that your uzip repository is capable of inflating a pdf flatedecode stream and in another issue here, that array lenght doesnt matter cause you copy over to a bigger array, if it will not fit into the output array.

Would be awesome, if you could help. I’m at a loss. 😦

Greetings, Dennis test.pdf