javascript - 正则表达式 - 收集强制前缀和可选组之间的字符

Question

我正在 JavaScript 中创建正则表达式来查找所有出现的组，所有这些都是可选的。

我现在已经收集了可选组(感谢 @wiktor-stribiżew )。缺少的事情是在 new- 前缀和第一个出现的组之间收集字符。

输入:

new-rooms-3-area-50
new-poland-warsaw-rooms-3-area-50-bar
new-some-important-location-rooms-3-asdads-anything-area-50-uiop
new-another-location-area-50-else

请求的输出:

["rooms-3", "area-50"]
["poland-warsaw", "rooms-3", "area-50"]
["some-important-location", "rooms-3", "area-50"]
["another-location", "area-50"]

我现在有了

new-(?:.*?(rooms-\d+))?.*?(area-\d+)

正则表达式。我认为在 new- 和 rooms|area 之间收集 .* 可能是愚蠢的解决方案。

在线演示:https://regex101.com/r/QvmYN0/5

注意:我创建了两个单独的问题，因为它指的是两个单独的问题。我希望将来有人遇到类似的问题。

Answer 1

我认为最好按如下步骤进行拆分:

// Split by \n to work with each line
getArrays = input => input.split`\n`.map(x => {

  // Split by your desired delimiters:
  // -dashes which has "area" or "rooms" in front
  return x.split(/-(?=area-|rooms-)/g).map(y => {

    // remove the "new-" from start or anything in front the numbers
    return y.replace(/^new-|\D+$/, '');

  // make sure you don't have empty cases
  }).filter(y => y);

});

var txt = `new-rooms-3-area-50
new-poland-warsaw-rooms-3-area-50-bar
new-some-important-location-rooms-3-asdads-anything-area-50-uiop
new-another-location-area-50-else`;

console.log(getArrays(txt));

编辑:上面的代码返回请求的输出。但是，我认为您应该需要一组模型:

// initial state of your model
getModel = () => ({
  new: '',
  area: 0,
  rooms: 0,
});

// the function that will return the array of models:
getModels = input => input.split`\n`.map(line => {
  var model = getModel();
  
  // set delimiters:
  var delimiters = new RegExp(
    '-(?=(?:' + Object.keys(model).join`|` + ')-)', 'g');
  
  // set the properties of your model:
  line.split(delimiters).forEach(item => {
    
    // remove non-digits after the last digit:
    item.replace(/(\d)\D+$/, '$1')
    
      // set each matched property:
      .replace(/^([^-]+)-(.*)/, 
        (whole_match, key, val) => model[key] = val);
  });
  
  return model;
});

var txt = `new-rooms-3-area-50
new-poland-warsaw-rooms-3-area-50-bar
new-some-important-location-rooms-3-asdads-anything-area-50-uiop
new-another-location-area-50-else`;

console.log(getModels(txt));