将文本转换为对象数组

I need to convert this...

我需要转换这个…

# 4.0.0 - 2016-01-01
- some text without category

# 3.12.0 - 2016-02-01
- Category: some text

# 3.11.4 - 2016-03-01
- Category: some multiple text
- Something: some text
- Anything: more text

...into an (object)array. I don't know how to keep all elements connected to its version.

…(对象)数组。我不知道如何将所有的元素连接到它的版本。

The result should be look like this (example for last block)

结果应该如下所示(最后一个块的示例)

[
    { 
        major: 3,
        minor: 11,
        patch = 4,
        date = '2016-03-01',
        entries = [
            { category: 'Category', 'some multiple text' },
            { category: 'Something', 'some text' },
            { category: 'Anything', 'more text' }
        ]
    }
]

As you can see in the first block, in entries the field category is optional.

正如您在第一个块中看到的，在条目中，字段类别是可选的。

This is how I try do it:

我就是这样做的:

var lines = text.split('\n');
for(var i = 0;i < lines.length;i++){
    var meta = lines[i].split(' ');
    var version = meta[1].split('.');
    result['major'] = version[0];
    result['minor'] = version[1];
    result['patch'] = version[2];
    result['date'] = meta[3]
}

But this only works for the first line of each block.

但这只适用于每个块的第一行。

2 个解决方案

#1

This proposal split the string into chunks and test the chunks for # or -. These line are evaluated and added to the result.

这个建议将字符串分割成块，并测试#或-的块。这些行被求值并添加到结果中。

var text = '# 4.0.0 - 2016-01-01\n- some text without category\n- Just a text: with double point\n\n# 3.12.0 - 2016-02-01\n- Category: some text\n\n# 3.11.4 - 2016-03-01\n- Category: some multiple text\n- Something: some text\n- Anything: more text',
    result = function (text) {
        var array = text.split('\n'),
            o, r = [];
        array.forEach(function (a) {
            var p, v;
            if (a[0] === '#') {
                o = {};
                p = a.match(/^# ((.*) - )?(.*)$/);
                v = p[2].split('.');
                o.major = v[0];
                o.minor = v[1];
                o.patch = v[2];
                o.date = p[3];
                r.push(o);
            }
            if (a[0] === '-') {
                if (!o.entries) {
                    o.entries = [];
                }
                p = a.match(/^- ((\w*): )?(.*)$/);
                o.entries.push({ category: p[2], value: p[3] });
            }
        });
        return r;
    }(text);

document.write('<pre>' + JSON.stringify(result, 0, 4) + '</pre>');

#2

This can be solved with writing different functions for the different types of lines and some regular expressions:

这可以通过为不同类型的行编写不同的函数和一些正则表达式来解决:

var text = `# 4.0.0 - 2016-01-01
- some text without category

# 3.12.0 - 2016-02-01
- Category: some text

# 3.11.4 - 2016-03-01
- Category: some multiple text
- Something: some text
- Anything: more text`;

var lines = text.split('\n');
var all = [];
for(var i = 0;i < lines.length;i++){
  var firstChar = lines[i].substr(0, 1);
  if (firstChar === '#'){
    all.push(extractVersionInfo(lines[i]));
  }
  else if (firstChar === "-"){
    all[all.length-1].entries.push(extractNote(lines[i]));
  }
}
console.log(all);

function extractNote(text){
  var withoutDash = text.substr(2);
  if (withoutDash.indexOf(":") !== -1){
    var parts = withoutDash.split(":");
    return {category: parts[0],
        value: parts[1]
       };
  }
  else {
    return {value: withoutDash};
  }
}

function extractVersionInfo(text){
  var pattern = /# ([0-9]+)\.([0-9]+)\.([0-9]+) - ([0-9]{4}-[0-9]{2}-[0-9]{2})/;
  var match = text.match(pattern);
  result = {};
  result.major = match[1];
  result.minor = match[2];
  result.patch = match[3];
  result.date = match[4];
  result.entries = [];
  return result;
}

Output:

输出:

[ { major: '4',
    minor: '0',
    patch: '0',
    date: '2016-01-01',
    entries: [ { value: 'some text without category' } ] },
  { major: '3',
    minor: '12',
    patch: '0',
    date: '2016-02-01',
    entries: [ { category: 'Category', value: ' some text' } ] },
  { major: '3',
    minor: '11',
    patch: '4',
    date: '2016-03-01',
    entries: 
     [ { category: 'Category', value: ' some multiple text' },
       { category: 'Something', value: ' some text' },
       { category: 'Anything', value: ' more text' } ] } ]