lua-filesize

lua-filesize, Lua library to generate a human readable string describing the file size

Inspired by https://github.com/avoidwork/filesize.js

## Reference

This library installs a single module called `filesize`.
It is represented with a function of the same name.
Principally it takes an integer (filesize) and returns
a human readable string describing the file size.

`filesize()` accepts an optional second argument `options`
of type `table`, so you can customize the output.

* `base` (number)
Number base, default is 2

* `bits` (boolean)
Enables bit sizes, default is false

* `exponent` (number)
Specifies the SI suffix via exponent,
e.g. 2 is MB for bytes, default is -1

* `output` (string)
Output of function (array, exponent, object, or string),
default is string

* `round` (number)
Decimal place, default is 2

* `spacer` (string)
Character between the result and suffix, default is " "

* `suffixes` (table)
Dictionary of SI suffixes to replace for localization,
defaults to english if no match is found

* `unix` (boolean)
Enables unix style human readable output, e.g. `ls -lh`,
default is false

## Examples

> filesize = require 'filesize'
> filesize(500)
"500 B"
> filesize(500, {bits = true})
"3.91 Kb"
> filesize(265318)
"259.1 KB"
> filesize(265318, {base = 10})
"265.32 kB"
> filesize(265318, {round = 0})
"259 KB"
> filesize(265318, {output = "array"})
{ 259.1, "KB" }
> filesize(265318, {output = "object"})
{
value = 259.1,
suffix = "KB",
}
> filesize(1, {suffixes = {B = "Б"}})
"1 Б"
> filesize(1024)
"1 KB"
> filesize(1024, {exponent = 0})
"1024 B"
> filesize(1024, {output = "exponent"})
1