1 | path = require 'path'
|
2 | fs = require 'fs'
|
3 |
|
4 | existsSync = fs.existsSync ? path.existsSync
|
5 |
|
6 |
|
7 | exports.container = ->
|
8 |
|
9 | factories = {}
|
10 | modules = {}
|
11 |
|
12 |
|
13 |
|
14 |
|
15 |
|
16 | register = (name, func) ->
|
17 | if name == Object name
|
18 | hash = name
|
19 | for name, func of hash
|
20 | registerOne name, func
|
21 | else
|
22 | registerOne name, func
|
23 |
|
24 | registerOne = (name, func) ->
|
25 | if not func? then throw new Error "cannot register null function"
|
26 | factories[name] = toFactory func
|
27 |
|
28 | list = -> factories
|
29 |
|
30 | load = (file) ->
|
31 | exists = existsSync file
|
32 | if exists
|
33 | stats = fs.statSync file
|
34 | if stats.isDirectory() then return loaddir file
|
35 | loadfile file
|
36 |
|
37 | loadfile = (file) ->
|
38 | module = file.replace(/\.\w+$/, "")
|
39 |
|
40 |
|
41 | name = path.basename(module).replace(/\-(\w)/g, (match, letter) -> letter.toUpperCase())
|
42 |
|
43 | modules[name] = module
|
44 |
|
45 | loaddir = (dir) ->
|
46 | filenames = fs.readdirSync dir
|
47 | files = filenames.map (file) -> path.join dir, file
|
48 | for file in files
|
49 | continue unless file.match /\.(js|coffee)$/
|
50 | stats = fs.statSync file
|
51 | if stats.isFile() then loadfile file
|
52 |
|
53 | toFactory = (func) ->
|
54 | if typeof func is "function"
|
55 | func: func
|
56 | required: argList func
|
57 | else
|
58 | func: -> func
|
59 | required: []
|
60 |
|
61 | argList = (func) ->
|
62 |
|
63 | match = func.toString().match /function.*?\(([\s\S]*?)\)/
|
64 | if not match? then throw new Error "could not parse function arguments: #{func?.toString()}"
|
65 | required = match[1].split(",").filter(notEmpty).map((str) -> str.trim())
|
66 | return required
|
67 |
|
68 | notEmpty = (a) -> a
|
69 |
|
70 |
|
71 |
|
72 |
|
73 |
|
74 |
|
75 | get = (name, overrides, visited = []) ->
|
76 |
|
77 | isOverridden = overrides?
|
78 |
|
79 |
|
80 | if haveVisited visited, name
|
81 | throw new Error "circular dependency with '#{name}'"
|
82 | visited = visited.concat(name)
|
83 |
|
84 | factory = factories[name]
|
85 | if not factory?
|
86 | module = modules[name]
|
87 | if module?
|
88 | register name, require(module)
|
89 | factory = factories[name]
|
90 | else
|
91 | throw new Error "dependency '#{name}' was not registered"
|
92 |
|
93 |
|
94 | if factory.instance? and not isOverridden
|
95 | return factory.instance
|
96 |
|
97 |
|
98 | dependencies = factory.required.map (name) ->
|
99 | if overrides?[name]?
|
100 | overrides?[name]
|
101 | else
|
102 | get name, overrides, visited
|
103 |
|
104 | instance = factory.func dependencies...
|
105 |
|
106 | if not isOverridden
|
107 | factory.instance = instance
|
108 |
|
109 | return instance
|
110 |
|
111 | getSandboxed = (name, overrides) ->
|
112 | mockContainer = exports.container()
|
113 | mockContainer.register(name, factories[name].func)
|
114 |
|
115 | return mockContainer.get(name, overrides)
|
116 |
|
117 | haveVisited = (visited, name) ->
|
118 | isName = (n) -> n is name
|
119 | visited.filter(isName).length
|
120 |
|
121 |
|
122 |
|
123 | resolve = (overrides, func) ->
|
124 | if not func
|
125 | func = overrides
|
126 | overrides = null
|
127 | register "__temp", func
|
128 | get "__temp", overrides
|
129 |
|
130 | container =
|
131 | get: get
|
132 | getSandboxed: getSandboxed
|
133 | resolve: resolve
|
134 | register: register
|
135 | load: load
|
136 | list: list
|
137 |
|
138 |
|
139 | container.register "_container", container
|
140 |
|
141 | return container
|