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
|
module ApplicationHelper
def title(site_title)
content_for(:site_title, site_title.to_s.html_safe) # html_safe because it's escaped again later (yield?)
site_title
end
def site_headers(site_headers)
content_for(:site_headers, site_headers.to_s.html_safe)
site_headers
end
def ago(tm)
if tm && current_user.try(:utc_time) != true
content_tag :time, title: tm.strftime("%e %b %Y, %H:%M %Z"), datetime: tm.to_datetime.rfc3339 do
tm.strftime("%e %b %Y, %H:%M")
end
else
tm
end
end
def render_md(content)
renderer = Redcarpet::Render::HTML.new({
filter_html: true,
no_styles: true,
safe_links_only: true,
with_toc_data: true,
hard_wrap: true,
link_attributes: {rel: "nofollow"}
})
md = Redcarpet::Markdown.new(renderer, {
tables: true,
fenced_code_blocks: true,
autolink: true,
strikethrough: true,
lax_spacing: true,
disable_indented_code_blocks: false,
space_after_headers: false,
superscript: true,
underline: true,
highlight: true,
footnotes: true
})
render_youtube(md.render(content))
end
def render_trusted_md(content)
renderer = Redcarpet::Render::HTML.new({
filter_html: false,
no_styles: false,
safe_links_only: false,
with_toc_data: true,
hard_wrap: true,
})
md = Redcarpet::Markdown.new(renderer, {
tables: true,
fenced_code_blocks: true,
autolink: true,
strikethrough: true,
lax_spacing: true,
disable_indented_code_blocks: false,
space_after_headers: false,
superscript: true,
underline: true,
highlight: true,
footnotes: true
})
render_youtube(md.render(content))
end
# calculate the foreground color
# either +dark+ or +light+, based on the +bgcolor+
def fcolor(bgcolor = "#000", light = "#fff", dark = "#000")
bg = bgcolor.gsub(/[^0-9a-f]/i, "")
# convert 3 char to 6 char hex
bg.gsub!(/./, '\&\&') if bg.length == 3
sum = 0
[0, 2, 4].each do |i|
sum += bg[i..i+1].to_i(16)
end
return (sum/3 < 128) ? light : dark
end
private
def render_youtube(content)
# TODO: render only in text blocks, not in code/quotes/etc
return content.gsub(
/\[yt:([a-zA-Z0-9\-_]+)(:(\d+))?\]/,
"<iframe class='youtube' allowfullscreen src='
https://www.youtube-nocookie.com/embed/\\1?theme=light&vq=hd720&hd=1&iv_load_policy=3&showinfo=1&showsearch=0&rel=0&modestbranding&hd=1&autohide=1&html5=1&start=\\3'>
</iframe>")
end
end
|
