How to Get File Character Encoding in Node.js ?
Last Updated :
05 Jul, 2024
Character encoding is essential when working with text files, as it determines how characters are represented in bytes. Different files may use different encodings, such as UTF-8, ASCII, or ISO-8859-1. Determining the character encoding of a file in Node.js can help ensure proper reading and processing of the file's content.
Why Is Character Encoding Important?
- Data Integrity: Incorrect character encoding can lead to garbled text and data corruption.
- Compatibility: Different systems may use different encodings, so detecting and converting encoding ensures compatibility.
- Internationalization: Supports multiple languages and special characters.
Syntax
languageEncoding(pathToFile).then(
fileInfo => // Do anything
);
Parameters:
pathToFile: (Relative or Absolute)Path of the actual file.
Return Value:
An Object having following values, { language: french, encoding: CP1252, confidence: 0.99 }
Installation Steps
Step 1: Make a folder structure for the project.
mkdir myapp
Step 2: Navigate to the project directory
cd myapp
Step 3: Initialize the NodeJs project inside the myapp folder.
npm init -y
Step 4: Install the required dependencies by the following command:
npm install detect-file-encoding-and-language
The updated dependencies in package.json file will look like:
"dependencies": {
"detect-file-encoding-and-language": "^2.4.0",
}
Step 5: Make Filename- a.txt and the below text inside that.
Geeks for Geeks
Example: Implementation to write the code to show how to get file character encoding in Node.js
JavaScript
// app.js
import languageEncoding from "detect-file-encoding-and-language"
const pathToFile = "./a.txt"
languageEncoding(pathToFile)
.then(fileInfo => console.log(fileInfo.encoding))
.catch(err => console.log(err));
Step to Run Application: Run the application using the following command from the root directory of the project
node app.js
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