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.

"??" seems that the expected request was a **jsonp** and the real response is a simple **JSON** (before `JSON.parse(data)` seems there has been already a parsing) — Frogmouth, Jan 20 '14 at 13:23

score 3 · Answer 1 · answered Apr 04 '16 at 15:22

3

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

answered Apr 04 '16 at 15:22

borgespires

170
1
2
11

score 0 · Answer 2 · answered Jan 21 '14 at 08:27

0

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.

answered Jan 21 '14 at 08:27

ste2425

4,656
2
22
37

read json file from zip with adm-zip

2 Answers2

Linked