| 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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190 | 1×
1×
1×
1×
1×
1×
1×
1×
1×
1×
1×
1×
1×
1×
1×
1×
1×
1×
1×
132×
2×
132×
132×
132×
132×
132×
132×
132×
132×
394×
387×
331×
331×
331×
304×
304×
275×
59×
59×
52×
41×
41×
5557×
2015×
75×
75×
88×
81×
2×
2×
92×
75×
18×
75×
73×
2×
2×
1×
1×
1×
1×
71×
17×
17×
1×
16×
1×
16×
17×
2×
2×
1×
16×
16×
16×
15×
14×
14×
1×
14×
1×
16×
1×
16×
16×
7×
7×
7×
6×
6×
6×
5×
1×
1×
132×
132×
132×
132×
132×
1×
132×
92×
1×
1×
1×
1×
1×
1×
1×
1×
| const Scope = require('./src/scope')
const _ = require('./src/util/underscore.js')
const assert = require('./src/util/assert.js')
const tokenizer = require('./src/tokenizer.js')
const statFileAsync = require('./src/util/fs.js').statFileAsync
const readFileAsync = require('./src/util/fs.js').readFileAsync
const path = require('path')
const url = require('./src/util/url.js')
const Render = require('./src/render.js')
const lexical = require('./src/lexical.js')
const Tag = require('./src/tag.js')
const Filter = require('./src/filter.js')
const Parser = require('./src/parser')
const Syntax = require('./src/syntax.js')
const tags = require('./tags')
const filters = require('./filters')
const anySeries = require('./src/util/promise.js').anySeries
const Errors = require('./src/util/error.js')
var _engine = {
init: function (tag, filter, options) {
if (options.cache) {
this.cache = {}
}
this.options = options
this.tag = tag
this.filter = filter
this.parser = Parser(tag, filter)
this.renderer = Render()
tags(this)
filters(this)
return this
},
parse: function (html, filepath) {
var tokens = tokenizer.parse(html, filepath, this.options)
return this.parser.parse(tokens)
},
render: function (tpl, ctx, opts) {
opts = _.assign({}, this.options, opts)
var scope = Scope.factory(ctx, opts)
return this.renderer.renderTemplates(tpl, scope)
},
parseAndRender: function (html, ctx, opts) {
return Promise.resolve()
.then(() => this.parse(html))
.then(tpl => this.render(tpl, ctx, opts))
},
renderFile: function (filepath, ctx, opts) {
opts = _.assign({}, opts)
return this.getTemplate(filepath, opts.root)
.then(templates => this.render(templates, ctx, opts))
},
evalValue: function (str, scope) {
var tpl = this.parser.parseValue(str.trim())
return this.renderer.evalValue(tpl, scope)
},
registerFilter: function (name, filter) {
return this.filter.register(name, filter)
},
registerTag: function (name, tag) {
return this.tag.register(name, tag)
},
lookup: function (filepath, root) {
root = this.options.root.concat(root || [])
root = _.uniq(root)
var paths = root.map(root => path.resolve(root, filepath))
return anySeries(paths, path => statFileAsync(path).then(() => path))
.catch((e) => {
e.message = `${e.code}: Failed to lookup ${filepath} in: ${root}`
throw e
})
},
getTemplate: function (filepath, root) {
return typeof XMLHttpRequest === 'undefined'
? this.getTemplateFromFile(filepath, root)
: this.getTemplateFromUrl(filepath, root)
},
getTemplateFromFile: function (filepath, root) {
if (!path.extname(filepath)) {
filepath += this.options.extname
}
return this
.lookup(filepath, root)
.then(filepath => {
if (this.options.cache) {
var tpl = this.cache[filepath]
if (tpl) {
return Promise.resolve(tpl)
}
return readFileAsync(filepath)
.then(str => this.parse(str))
.then(tpl => (this.cache[filepath] = tpl))
} else {
return readFileAsync(filepath).then(str => this.parse(str, filepath))
}
})
},
getTemplateFromUrl: function (filepath, root) {
var fullUrl
if (url.valid(filepath)) {
fullUrl = filepath
} else {
if (!url.extname(filepath)) {
filepath += this.options.extname
}
fullUrl = url.resolve(root || this.options.root, filepath)
}
if (this.options.cache) {
var tpl = this.cache[filepath]
if (tpl) {
return Promise.resolve(tpl)
}
}
return new Promise((resolve, reject) => {
var xhr = new XMLHttpRequest()
xhr.onload = () => {
if (xhr.status >= 200 && xhr.status < 300) {
var tpl = this.parse(xhr.responseText)
if (this.options.cache) {
this.cache[filepath] = tpl
}
resolve(tpl)
} else {
reject(new Error(xhr.statusText))
}
}
xhr.onerror = () => {
reject(new Error('An error occurred whilst sending the response.'))
}
xhr.open('GET', fullUrl)
xhr.send()
})
},
express: function (opts) {
opts = opts || {}
var self = this
return function (filePath, ctx, callback) {
assert(Array.isArray(this.root) || _.isString(this.root),
'illegal views root, are you using express.js?')
opts.root = this.root
self.renderFile(filePath, ctx, opts)
.then(html => callback(null, html))
.catch(e => callback(e))
}
}
}
function factory (options) {
options = _.assign({
root: ['.'],
cache: false,
extname: '',
dynamicPartials: true,
trim_tag_right: false,
trim_tag_left: false,
trim_value_right: false,
trim_value_left: false,
greedy: true,
strict_filters: false,
strict_variables: false
}, options)
options.root = normalizeStringArray(options.root)
var engine = Object.create(_engine)
engine.init(Tag(), Filter(options), options)
return engine
}
function normalizeStringArray (value) {
if (Array.isArray(value)) return value
if (_.isString(value)) return [value]
return []
}
factory.lexical = lexical
factory.isTruthy = Syntax.isTruthy
factory.isFalsy = Syntax.isFalsy
factory.evalExp = Syntax.evalExp
factory.evalValue = Syntax.evalValue
factory.Types = {
ParseError: Errors.ParseError,
TokenizationEroor: Errors.TokenizationError,
RenderBreakError: Errors.RenderBreakError,
AssertionError: Errors.AssertionError
}
module.exports = factory
|