git ssb

1
var path = require('path')
2
var url = require('url')
3
var marked = require('ssb-marked')
4
var ref = require('ssb-ref')
5
var u = require('./util')
6
7
// render links to git objects and ssb objects
8
var blockRenderer = new marked.Renderer()
9
blockRenderer.urltransform = function (href) {
10
  if (ref.isLink(href))
11
    return u.encodeLink(href)
12
  if (/^[0-9a-f]{40}$/.test(href) && this.options.repo)
13
    return u.encodeLink([this.options.repo.id, 'commit', href])
14
  if (this.options.repo && this.options.rev && this.options.path
15
   && !url.parse(href).host && href[0] !== '#')
16
    return path.join('/', encodeURIComponent(this.options.repo.id),
17
      'blob', this.options.rev, this.options.path.join('/'), href)
18
  return href
19
}
20
21
blockRenderer.image = function (href, title, text) {
22
  href = href.replace(/^&/, '&')
23
  var url
24
  if (ref.isBlobId(href))
25
    url = u.encodeLink(href)
26
  else if (/^https?:\/\//.test(href))
27
    url = href
28
  else if (this.options.repo && this.options.rev && this.options.path)
29
    url = path.join('/', encodeURIComponent(this.options.repo.id),
30
      'raw', this.options.rev, this.options.path.join('/'), href)
31
  else
32
    return text
33
  return '<img src="' + u.escape(url) + '" alt="' + text + '"' +
34
    (title ? ' title="' + title + '"' : '') + '/>'
35
}
36
37
blockRenderer.mention = function (preceding, id) {
38
  // prevent broken name mention
39
  if (id[0] == '@' && !ref.isFeed(id))
40
    return (preceding||'') + u.escape(id)
41
42
  return marked.Renderer.prototype.mention.call(this, preceding, id)
43
}
44
45
blockRenderer.listitem = function (text, checked) {
46
  return '<li>' +
47
    (checked === undefined ? '' : '<i>' + (checked ? '☑' : '☐') + '</i> ') +
48
    text + '</li>\n'
49
}
50
51
marked.setOptions({
52
  gfm: true,
53
  mentions: true,
54
  tables: true,
55
  breaks: true,
56
  pedantic: false,
57
  sanitize: true,
58
  smartLists: true,
59
  smartypants: false,
60
  highlight: u.highlight,
61
  renderer: blockRenderer
62
})
63
64
// hack to make git link mentions work
65
var mdRules = new marked.InlineLexer(1, marked.defaults).rules
66
mdRules.mention =
67
  /^(\s)?([@%&][A-Za-z0-9\._\-+=\/]*[A-Za-z0-9_\-+=\/]|[0-9a-f]{40})/
68
mdRules.text = /^[\s\S]+?(?=[\\<!\[_*`:~]|https?:\/\/| {2,}\n| [@%&]|[0-9a-f]{40}|$)/
69
70
module.exports = function (text, options, cb) {
71
  if (!text) return ''
72
  if (typeof text != 'string') text = String(text)
73
  if (!options) options = {}
74
  else if (options.id) options = {repo: options}
75
  if (!options.rev) options.rev = 'HEAD'
76
  if (!options.path) options.path = []
77
78
  return marked(text, options, cb)
79
}
80