SizeRange

This is a Node.js module for parsing and working with file size ranges.

Installation

npm install size-range

Usage

Using this function :

const sizerange = require('size-parser');

const range = sizerange('10KB-1MB');

By instantiating a class :

const {SizeRange} = require('size-parser');

const range = new SizeRange('10KB-1MB');

You can now check if a given size is within the specified range:

const size = 500000; // 500 KB

console.log(range.check(size)); // true

Working on files

Check a file size :

range.checkFile('/path/to/file.txt')
  .then(result => {
    console.log(result); // true or false
  })
  .catch(error => {
    console.error(error);
  });

...or synchronously :

console.log(
  range.checkFileSync(filePath)
);

Size Range Format

• Units are case insensitive.
• Unnecessary spaces are taken into account.

Examples of range :

  sizerange('100kb'); // or '=100kb', 'equal 100kb', no unit means equal
  sizerange('100'); // or '100B', no unit means byte

  sizerange('> 10 MB'); // or ' >10mb '
  sizerange('<=50kb');
  sizerange('max 1mb');

  sizerange('10kb-1mb');
  sizerange('between 10kb and 1mb');

Available Units

The following units are supported:

• Byte (b)
• Kilobyte (KB)
• Megabyte (MB)
• Gigabyte (GB)
• Terabyte (TB)
• Petabyte (PB)
• Exabyte (EB)
• Zettabyte (ZB)
• Yottabyte (YB)

Translations

All words or regex are configurable :

const {SizeRange, units, regexes} = require('size-range');

units.megabyte.text = 'mo';

regexes.between = /^entre\s+(?<min>.+?)\s+et\s+(?<max>.+?)$/i;

const range = new SizeRange('entre 1mo et 2mo');

Functions

You can separately parse size or range ;

const {parseSize, parseRange} = require('size-range');

console.log(parseSize('100kb')); // 102400

console.log(parseRange('1mb-2mb')); // { min: 1048576, max: 2097152 }

License

This project is licensed under the MIT License. See the LICENSE file for more information.