ass-compiler/src/parser/drawing.js

Parses and compiles ASS subtitle format to easy-to-use data structure.

export function parseDrawing(text) {
  if (!text) return [];
  return text
    .toLowerCase()
    // numbers
    .replace(/([+-]?(?:\d+(?:\.\d*)?|\.\d+)(?:e[+-]?\d+)?)/g, ' $1 ')
    // commands
    .replace(/([mnlbspc])/g, ' $1 ')
    .trim()
    .replace(/\s+/g, ' ')
    .split(/\s(?=[mnlbspc])/)
    .map((cmd) => (
      cmd.split(' ')
        .filter((x, i) => !(i && Number.isNaN(x * 1)))
    ));
}