/**
 * @license
 * Copyright (c) 2016, Contributors
 * SPDX-License-Identifier: ISC
 */
// take an un-split argv string and tokenize it.
export function tokenizeArgString(argString) {
  if (Array.isArray(argString)) {
    return argString.map((e) => (typeof e !== 'string' ? e + '' : e));
  }
  argString = argString.trim();
  let i = 0;
  let prevC = null;
  let c = null;
  let opening = null;
  const args = [];
  for (let ii = 0; ii < argString.length; ii++) {
    prevC = c;
    c = argString.charAt(ii);
    // split on spaces unless we're in quotes.
    if (c === ' ' && !opening) {
      if (!(prevC === ' ')) {
        i++;
      }
      continue;
    }
    // don't split the string if we're in matching
    // opening or closing single and double quotes.
    if (c === opening) {
      opening = null;
    } else if ((c === "'" || c === '"') && !opening) {
      opening = c;
    }
    if (!args[i]) args[i] = '';
    args[i] += c;
  }
  return args;
}