1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
var _ = require('lodash');
var dom = require('./dom');
var SELECTOR_LIST = 'ol, ul';
var SELECTOR_LINK = '> a, p > a';
var SELECTOR_PART = 'h2, h3, h4';
var BL = '\n';
/**
Find a list
@param {cheerio.Node}
@return {cheerio.Node}
*/
function findList($parent) {
var $container = $parent.children('.olist');
if ($container.length > 0) $parent = $container.first();
return $parent.children(SELECTOR_LIST);
}
/**
Parse a ul list and return list of chapters recursvely
@param {cheerio.Node}
@param {cheerio.DOM}
@return {Array}
*/
function parseList($ul, $) {
var articles = [];
$ul.children('li').each(function() {
var article = {};
var $li = $(this);
// Get text for the entry
var $p = $li.children('p');
article.title = ($p.text() || dom.textNode($li.get(0))).trim();
// Parse link
var $a = $li.find(SELECTOR_LINK);
if ($a.length > 0) {
article.title = $a.first().text();
article.ref = $a.attr('href').replace(/\\/g, '/').replace(/^\/+/, '');
}
// Sub articles
var $sub = findList($li);
article.articles = parseList($sub, $);
if (!article.title) return;
articles.push(article);
});
return articles;
}
/**
Find all parts and their corresponding lists
@param {cheerio.Node}
@param {cheerio.DOM}
@return {Array<{title: String, list: cheerio.Node}>}
*/
function findParts($parent, $) {
// Find parts and lists
// TODO asciidoc compatibility
var partsAndLists = $parent.children(SELECTOR_LIST + ', ' + SELECTOR_PART);
// Group each part with the list after
var parts = [];
var previousPart = null;
partsAndLists.each(function (i, el) {
if (isPartNode(el)) {
if (previousPart !== null) {
// The previous part was empty
parts.push(previousPart);
}
previousPart = {
title: getPartTitle(el, $),
list: null
};
} else { // It is a list
if (previousPart !== null) {
previousPart.list = el;
} else {
previousPart = {
title: '',
list: el
};
}
parts.push(previousPart);
previousPart = null;
}
});
return parts;
}
/**
True if the element is a part
@param el
@return {Boolean}
*/
function isPartNode(el) {
return SELECTOR_PART.indexOf(el.name) !== -1;
}
/**
Parse the title of a part element
@param el
@param {cheerio.DOM} $
@return {String}
*/
function getPartTitle(el, $) {
return $(el).text().trim();
}
/**
Parse an HTML content into a tree of articles/parts
@param {String} html
@return {Object}
*/
function parseSummary(html) {
var $ = dom.parse(html);
var $root = dom.cleanup(dom.root($), $);
var parts = findParts($root, $);
// Parse each list
var parsedParts = [];
var part;
for (var i = 0; i < parts.length; ++i) {
part = parts[i];
parsedParts.push({
title: part.title,
articles: parseList($(part.list), $)
});
}
return {
parts: parsedParts
};
}
module.exports = parseSummary;
|
