lpil / tom

A pure Gleam TOML parser!

tom

A Gleam TOML parser!

gleam add tom

import tom

const config = "
  [person]
  name = \"Lucy\"
  is_cool = true
"

pub fn main() {
  // Parse a string of TOML
  let assert Ok(parsed) = tom.parse(config)

  // Now you can work with the data directly, or you can use the `get_*`
  // functions to retrieve values.

  tom.get_string(parsed, ["person", "name"])
  // -> Ok("Lucy")

  let is_cool = tom.get_bool(parsed, ["person", "is_cool"])
  // -> Ok(True)
}

Further documentation can be found at https://hexdocs.pm/tom.

Status

The following string escape sequences are not supported yet:

• \xHH
• \uHHHH
• \UHHHHHHHH

tom's Issues

Error when parsing a toml file without trailing newline

When parsing a string without a trailing newline tom returns Unexpected("EOF", "\n")

Example:

  let assert Ok(toml) = tom.parse("lucy = \"cool\"")

This fails on the let assert, but if a trailing newline is added like this:

  let assert Ok(toml) = tom.parse("lucy = \"cool\"\n")

the result is Ok

I could not find anything in the toml specification about requiring a trailing newline.