read json file from zip with adm-zip

Question

Im trying to read a zip file and then parse a json file at the root of the zip.

The json file is called manifest.json and will be called this in every zip file i read.

Currently i have the following function

function getFileContents(directory){
    // reading archives
    var zip = new AdmZip(directory);
    var zipEntries = zip.getEntries(); // an array of ZipEntry records

    zipEntries.forEach(function (zipEntry) {
        if (zipEntry.entryName == "manifest.json") {
            console.log('getData', zipEntry.getData());
            console.log('data',zipEntry.data.toString('utf8')); 
        }
    });
}

However i get the following exception in the console

getData <Buffer ff fe 7b 00 0a 00 20 00 20 00 22 00 62 00 75 00 69 00 6c 00 64 0
0 22 00 3a 00 20 00 22 00 34 00 2e 00 38 00 2e 00 37 00 32 00 31 00 39 00 22 00
2c 00 0a ...>

TypeError: Cannot call method 'toString' of undefined
    at c:\direc\Custom_Modules\readZipFileModule\readZipFileModule.js:18:46
    at Array.forEach (native)

Of the back of this ive tried:

function getFileContents(directory){
    // reading archives
    var zip = new AdmZip(directory);
    var zipEntries = zip.getEntries(); // an array of ZipEntry records

    zipEntries.forEach(function (zipEntry) {
        if (zipEntry.entryName == "manifest.json") { 
            var decompressedData = zip.readFile(zipEntry);
            var data = zip.readAsText(zipEntry)
            console.log(JSON.parse(data));
        }
    });
}

if i console.log data i get:

??{
     " b u i l d " :   " 4 . 8 . 7 2 1 9 " ,
     " b r a n c h " :   " s t e p h e n " ,
     " t i m e s t a m p " :   " 1 5 - 0 1 - 2 0 1 4   0 9 : 0 6 : 2 7 "
 }

That is the correct data from the file however there are not spaces inbetween every character. But when i try and parse it it obviously throws an error about '??' Where are the question marks coming from? I don't fully understand how to use adm-zip correctly what exactly am i doing wrong to read a json file from a zip in nodejs? It doesn't need to save the file just parse its data into an object.

Thanks for any and all assistance with this.

Answer 1

Solved the problem.

It was the way a power shell script was making the json file and then writing it to a script.

Im afraid i don't have any more information than that as i didn't write the original power shell script nor the modified version.

Answer 2

Maybe this is too late... but I was having the same problem. You can use zipEntry.getData().toString('utf8')