Kevin Powell - Community•3y ago

File size string to number parser?

Hi everyone, I'm looking for a library that can parse a string such as "12.3Mb" or any other unit of measurement of information (b, kb, mb, gb, etc), and returns me the integer amount in bytes for that string. Does anyone know of something like that?

6 Replies

13eck•3y ago

Here's your lib!

const giveMeBytes = (str) => {
  const multiplier = {
    b: 1,
    kb: 1024,
    mb: 1024**2,
    gb: 1024**3,
    tb: 1024**4,
    pb: 1024**5
  }
  
  const num = Number(str.match(/\d/).toString())
  const type = str.match(/[a-zA-Z]+/).toString().toLowerCase()
  return `${str} is ${(num * multiplier[type]).toLocaleString()} bytes!`
 
}

console.log(giveMeBytes("5mb"));

console.log(giveMeBytes("10TB"));

const giveMeBytes = (str) => {
  const multiplier = {
    b: 1,
    kb: 1024,
    mb: 1024**2,
    gb: 1024**3,
    tb: 1024**4,
    pb: 1024**5
  }
  
  const num = Number(str.match(/\d/).toString())
  const type = str.match(/[a-zA-Z]+/).toString().toLowerCase()
  return `${str} is ${(num * multiplier[type]).toLocaleString()} bytes!`
 
}

console.log(giveMeBytes("5mb"));

console.log(giveMeBytes("10TB"));

Might have to finesse it a bit, but it's functional!

JoaoOP•3y ago

Hey, thanks 🙂 I'm actually looking for an actual npm package that's available and that I can install

13eck•3y ago

It's…5 lines of code (plus the multiplier object). Make a file and export giveMeBytes lol. Why the need for an NPM package?

JoaoOP•3y ago

Yeah I know, but I ended up writing my own code that accounts for both decimal and binary systems (kb and kib), and has checks to esnure the string is valid and whatnot. So I was wondering if there's another library I can compare it to

13eck•3y ago

Gotcha gotcha

JoaoOP•3y ago

Not like I don't appreciate the help btw 👍

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File size string to number parser?