argument-vector/index.js

Split a string of command line options into and argv(argument vector) array

'use strict';

var debug = require('debug')('argument-vector');

function Parser(options) {
  if (!(this instanceof Parser)) return new Parser(options);
}

Parser.prototype.parse = function(line){
  debug('parse("%s")', line);
  var orig = line = line.replace(/\\\n/g, '').trim();
  var c, i = 0, len = line.length;
  var args = [], arg, quot, q;

  for (; i < len; i++) {
    c = line.charAt(i);
    switch (c) {
    case ' ':
      if (!quot) {
        if (arg) {
          args.push(arg.trim());
          arg = null;
        }
      } else {
        arg += c;
      }
      break;
    case '\'':
    case '\"':
      if (!quot) {
        if (i === 0 || line.charAt(i-1) !== '\\') {
          quot = c;
          if (arg) { 
            arg += c;
          } else {
            arg = c;
          }
        }
      } else {
        arg += c;
        if (quot === c && line.charAt(i-1) !== '\\') {
          quot = null;
        }
      }
      break;
    default:
      if (arg) { 
        arg += c;
      } else {
        arg = c;
      }
    }
  }

  if (arg) {
    args.push(arg.trim());
    arg = null;
  }

  return args;
};

Parser.prototype.stringify = function(array){
  return array.join(' ');
};

module.exports = Parser;