-
Notifications
You must be signed in to change notification settings - Fork 76
/
asset_with_dependencies.rb
134 lines (110 loc) · 4.21 KB
/
asset_with_dependencies.rb
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
require 'sprockets/asset'
require 'sprockets/utils'
module Sprockets
# `AssetWithDependencies` is the base class for `ProcessedAsset` and `UnprocessedAsset`.
class AssetWithDependencies < Asset
# :dependency_digest is used internally to check equality
attr_reader :dependency_digest, :source
# Initialize asset from serialized hash
def init_with(environment, coder, asset_options = {})
asset_options[:bundle] = false
super(environment, coder)
@source = coder['source']
@dependency_digest = coder['dependency_digest']
@required_assets = coder['required_paths'].map { |p|
p = expand_root_path(p)
unless environment.paths.detect { |path| p[path] }
raise UnserializeError, "#{p} isn't in paths"
end
p == pathname.to_s ? self : environment.find_asset(p, asset_options)
}
@dependency_paths = coder['dependency_paths'].map { |h|
DependencyFile.new(expand_root_path(h['path']), h['mtime'], h['digest'])
}
end
# Serialize custom attributes.
def encode_with(coder)
super
coder['source'] = source
coder['dependency_digest'] = dependency_digest
coder['required_paths'] = required_assets.map { |a|
relativize_root_path(a.pathname).to_s
}
coder['dependency_paths'] = dependency_paths.map { |d|
{ 'path' => relativize_root_path(d.pathname).to_s,
'mtime' => d.mtime.iso8601,
'digest' => d.digest }
}
end
# Checks if Asset is stale by comparing the actual mtime and
# digest to the inmemory model.
def fresh?(environment)
# Check freshness of all declared dependencies
@dependency_paths.all? { |dep| dependency_fresh?(environment, dep) }
end
protected
class DependencyFile < Struct.new(:pathname, :mtime, :digest)
def initialize(pathname, mtime, digest)
pathname = Pathname.new(pathname) unless pathname.is_a?(Pathname)
mtime = Time.parse(mtime) if mtime.is_a?(String)
super
end
def eql?(other)
other.is_a?(DependencyFile) &&
pathname.eql?(other.pathname) &&
mtime.eql?(other.mtime) &&
digest.eql?(other.digest)
end
def hash
pathname.to_s.hash
end
end
private
def build_required_assets(environment, context, asset_options = {})
asset_options[:bundle] = false
@required_assets = []
required_assets_cache = {}
(context._required_paths + [pathname.to_s]).each do |path|
if path == self.pathname.to_s
unless required_assets_cache[self]
required_assets_cache[self] = true
@required_assets << self
end
elsif asset = environment.find_asset(path, asset_options)
asset.required_assets.each do |asset_dependency|
unless required_assets_cache[asset_dependency]
required_assets_cache[asset_dependency] = true
@required_assets << asset_dependency
end
end
end
end
required_assets_cache.clear
required_assets_cache = nil
end
def build_dependency_paths(environment, context, asset_options = {})
asset_options[:bundle] = false
dependency_paths = {}
context._dependency_paths.each do |path|
dep = DependencyFile.new(path, environment.stat(path).mtime, environment.file_digest(path).hexdigest)
dependency_paths[dep] = true
end
context._dependency_assets.each do |path|
if path == self.pathname.to_s
dep = DependencyFile.new(pathname, environment.stat(path).mtime, environment.file_digest(path).hexdigest)
dependency_paths[dep] = true
elsif asset = environment.find_asset(path, asset_options)
asset.dependency_paths.each do |d|
dependency_paths[d] = true
end
end
end
@dependency_paths = dependency_paths.keys
end
def compute_dependency_digest(environment)
required_assets.inject(environment.digest) { |digest, asset|
digest.update asset.digest
}.hexdigest
end
end
end