utils.js
3.85 KB
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
var client = new (require("mysql").Client)()
, util = require("util")
var Utils = module.exports = {
_: (function() {
var _ = require("underscore")
, _s = require('underscore.string')
_.mixin(_s.exports())
_.mixin({
includes: _s.include,
camelizeIf: function(string, condition) {
var result = string
if(condition) result = _.camelize(string)
return result
},
underscoredIf: function(string, condition) {
var result = string
if(condition) result = _.underscored(string)
return result
}
})
return _
})(),
inherit: function(klass, _super) {
util.inherits(klass, _super)
},
addEventEmitter: function(_class) {
Utils.inherit(_class, require('events').EventEmitter)
},
addTicks: function(s) {
return '`' + Utils.removeTicks(s) + '`'
},
removeTicks: function(s) {
return s.replace("`", "")
},
escape: function(s) {
return client.escape(s)
},
format: function(arr) {
var query = arr[0]
, replacements = Utils._.compact(arr.map(function(obj) { return obj != query ? obj : null}))
return client.format.apply(client, [query, replacements])
},
isHash: function(obj) {
return (typeof obj == 'object') && !obj.hasOwnProperty('length')
},
getDataTypeForValue: function(value) {
var DataTypes = require("./data-types")
switch(typeof value) {
case 'number':
return (value.toString().indexOf('.') > -1) ? DataTypes.FLOAT : DataTypes.INTEGER
break
case 'boolean':
return DataTypes.BOOLEAN
break
case 'object':
return (value.getMilliseconds) ? DataTypes.DATE : "WTF!"
break
default:
return DataTypes.TEXT
break
}
},
transformValueByDataType: function(value, dataType) {
dataType = dataType || Utils.getDataTypeForValue(value)
var DataTypes = require("./data-types")
if((value == null)||(typeof value == 'undefined')||((dataType.indexOf(DataTypes.INTEGER) > -1) && isNaN(value)))
return "NULL"
if(dataType.indexOf(DataTypes.FLOAT) > -1)
return (typeof value == 'number') ? value : parseFloat(value.replace(",", "."))
if(dataType.indexOf(DataTypes.BOOLEAN) > -1)
return (value === true ? 1 : 0)
if(dataType.indexOf(DataTypes.INTEGER) > -1)
return value
if(dataType.indexOf(DataTypes.DATE) > -1)
return ("'" + Utils.asSqlDate(value) + "'")
return ("'" + value + "'")
},
toSqlDate: function(date) {
return [
[
date.getFullYear(),
((date.getMonth() < 9 ? '0' : '') + (date.getMonth()+1)),
((date.getDate() < 10 ? '0' : '') + date.getDate())
].join("-"),
date.toLocaleTimeString()
].join(" ")
},
argsArePrimaryKeys: function(args, primaryKeys) {
var result = (args.length == Utils._.keys(primaryKeys).length)
Utils._.each(args, function(arg) {
if(result) {
if(['number', 'string'].indexOf(typeof arg) > -1)
result = true
else
result = (arg instanceof Date)
}
})
return result
},
combineTableNames: function(tableName1, tableName2) {
return (tableName1.toLowerCase() < tableName2.toLowerCase()) ? (tableName1 + tableName2) : (tableName2 + tableName1)
},
singularize: function(s) {
return Utils.Lingo.en.isSingular(s) ? s : Utils.Lingo.en.singularize(s)
},
pluralize: function(s) {
return Utils.Lingo.en.isPlural(s) ? s : Utils.Lingo.en.pluralize(s)
},
merge: function(a, b){
for(var key in b) {
a[key] = b[key]
}
return a
},
removeCommentsFromFunctionString: function(s) {
s = s.replace(/\s*(\/\/.*)/g, '')
s = s.replace(/(\/\*[\n\r\s\S]*?\*\/)/mg, '')
return s
}
}
Utils.CustomEventEmitter = require("./emitters/custom-event-emitter")
Utils.QueryChainer = require("./query-chainer")
Utils.Lingo = require("lingo")