How to Extract Zip file in Angular to a Relative path?

In many cases, we need to extract a zip file in an Angular application. This can be for various reasons, such as extracting resources or configuration files. In this blog post, we will discuss how to extract a zip file in an Angular application to a relative path. We will cover the technical details in detail and will be divided into sections for better understanding.

 

Prerequisites

Before we get started, make sure you have the following installed on your development machine:

  • Node.js and npm
  • Angular CLI

We will also be using the following npm packages:

  • jszip: A library for creating, reading and editing .zip files.
  • file-saver: A library for saving files on the client-side.

 

Installing the Required Libraries

First, let’s install the required libraries by running the following command in your terminal:

npm install jszip file-saver

 

Extracting the Zip File

To extract a zip file in an Angular application, we need to import the jszip library and use its loadAsync() method to read the contents of the zip file. Then, we can use the file() method to access the files inside the zip and the async() method to extract them. We will also be using fileSaver library to save the files in the desired location.

Here is an example of how to extract a zip file in an Angular component:

import { Component } from '@angular/core';
import * as JSZip from 'jszip';
import { saveAs } from 'file-saver';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {

  async extractZip(file: File) {
    const zip = new JSZip();
    const extractedFiles = await zip.loadAsync(file);
    extractedFiles.forEach(async (relativePath, file) => {
      const content = await file.async("string");
      saveAs(content, relativePath);
    });
  }
}

 

In the above example, we first imported the JSZip and saveAs from the file-saver library. Then, we created an extractZip method that takes a File object as a parameter. Inside the method, we created a new instance of the JSZip class and used the loadAsync() method to read the contents of the zip file. Next, we used the forEach method to iterate over the files inside the zip and the async() method to extract them. Finally, we used the saveAs() method to save the files in the desired location.

 

Conclusion

In this blog post, we discussed how to extract a zip file in an Angular application to a relative path. We covered the technical details of how to install the required libraries, how to read the contents of the zip file and how to extract and save the files in the desired location. With this knowledge, you can now easily extract zip files in your Angular application.

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