The zlib.createGunzip() method is an inbuilt application programming interface of the Zlib module which is used to create a new Gunzip object.
Syntax:
zlib.createGunzip( options )
Parameters: This method accepts single parameter options which is an optional parameter that holds the zlib options.
Return Value: It returns a new Gunzip object.
The below examples illustrate the use of zlib.createGunzip() method in Node.js:
Example 1:
javascript
// Node.js program to demonstrate the // createGunzip() method // Including zlib module const zlib = require( 'zlib' );
// Calling gzip function to compress data zlib.gzip( 'GeeksforGeeks' , function (err, data) {
if (err) {
return console.log( 'err' , err);
}
// Calling createGunzip method
// to decompress the data again
const gunzip = zlib.createGunzip();
gunzip.write(data);
gunzip.on( 'data' , function (data) {
console.log(data.toString());
});
}); |
Output:
GeeksforGeeks
Example 2:
javascript
// Node.js program to demonstrate the // createGunzip() method // Including zlib module const zlib = require( 'zlib' );
// Calling gzip function to compress data zlib.gzip( 'GfG' , function (err, data) {
if (err) {
return console.log( 'err' , err);
}
// Calling createGunzip method
// to decompress the data again
const gunzip = zlib.createGunzip();
gunzip.write(data);
gunzip.on( 'data' , function (data) {
// Encoding the data
console.log(data.toString( 'hex' ));
});
}); |
Output:
476647
Reference: https://nodejs.org/api/zlib.html#zlib_zlib_creategunzip_options