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
|
require 'action_view/helpers' if defined?(Rails)
require 'action_view/context' if defined?(Rails)
module InlineSvg
module ActionView
module Helpers
def inline_svg_tag(filename, transform_params={})
with_asset_finder(InlineSvg.configuration.asset_finder) do
render_inline_svg(filename, transform_params)
end
end
def inline_svg_pack_tag(filename, transform_params={})
with_asset_finder(InlineSvg::WebpackAssetFinder) do
render_inline_svg(filename, transform_params)
end
end
def inline_svg(filename, transform_params={})
render_inline_svg(filename, transform_params)
end
private
def backwards_compatible_html_escape(filename)
# html_escape_once was introduced in newer versions of Rails.
if ERB::Util.respond_to?(:html_escape_once)
ERB::Util.html_escape_once(filename)
else
ERB::Util.html_escape(filename)
end
end
def render_inline_svg(filename, transform_params={})
begin
svg_file = read_svg(filename)
rescue InlineSvg::AssetFile::FileNotFound => error
raise error if InlineSvg.configuration.raise_on_file_not_found?
return placeholder(filename) unless transform_params[:fallback].present?
if transform_params[:fallback].present?
begin
svg_file = read_svg(transform_params[:fallback])
rescue InlineSvg::AssetFile::FileNotFound
placeholder(filename)
end
end
end
InlineSvg::TransformPipeline.generate_html_from(svg_file, transform_params).html_safe
end
def read_svg(filename)
if InlineSvg::IOResource === filename
InlineSvg::IOResource.read filename
else
configured_asset_file.named filename
end
end
def placeholder(filename)
css_class = InlineSvg.configuration.svg_not_found_css_class
not_found_message = "'#{backwards_compatible_html_escape(filename)}' #{extension_hint(filename)}"
if css_class.nil?
return "<svg><!-- SVG file not found: #{not_found_message}--></svg>".html_safe
else
return "<svg class='#{css_class}'><!-- SVG file not found: #{not_found_message}--></svg>".html_safe
end
end
def configured_asset_file
InlineSvg.configuration.asset_file
end
def with_asset_finder(asset_finder)
Thread.current[:inline_svg_asset_finder] = asset_finder
output = yield
Thread.current[:inline_svg_asset_finder] = nil
output
end
def extension_hint(filename)
filename.ends_with?(".svg") ? "" : "(Try adding .svg to your filename) "
end
end
end
end
|
