cfn-create-or-update/lib/map.js

Create or update CloudFormation stack also if no updates are to be performed.

'use strict';

function parseParameter(val) {
  const ret = [];
  let current = '';
  let quoted = false;
  for (let i = 0; i < val.length; i++) {
    if (val[i] === '"') {
      quoted = !quoted;
    } else if (val[i] === ',' && quoted === false) {
      ret.push(current);
      current = '';
    } else {
      current += val[i];
    }
  }
  if (quoted === true) {
    throw new Error('quote was never closed');
  }
  if (current.length > 0) {
    ret.push(current);
  }
  return ret;
}

// ParameterKey=string,ParameterValue=string,UsePreviousValue=boolean
exports.parameter = (val) => {
  const ret = {};
  const pairs = parseParameter(val).map((pair) => pair.split(/=(.*)/));
  pairs.forEach((pair) => {
    if (pair[0] === 'ParameterKey') {
      ret.ParameterKey = pair[1];
    } else if (pair[0] === 'ParameterValue') {
      ret.ParameterValue = pair[1];
    } else if (pair[0] === 'UsePreviousValue') {
      ret.UsePreviousValue = pair[1] === 'true';
    } else {
      throw new Error('ParameterKey, ParameterValue or UsePreviousValue expected');
    }
  });
  return ret;
};

exports.string = (val) => {
  if (val.length === 0) {
    throw new Error('needs to be a string');
  }
  return val;
};

// Key=string,Value=string
exports.tag = (val) => {
  const ret = {};
  const pairs = val.split(',').map((pair) => pair.split(/=(.+)/));
  pairs.forEach((pair) => {
    if (pair[0] === 'Key') {
      ret.key = pair[1];
    } else if (pair[0] === 'Value') {
      ret.value = pair[1];
    } else {
      throw new Error('Key or Value expected');
    }
  });
  return ret;
};